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[PATCH OLK-6.6] xsched: move xsched types to user-accessible headers
by Liu Kai 18 Dec '25

18 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID9IFI ----------------------------------------- Fix xsched syscall compilation by resolving declaration conflicts and ensuring user-space access to parameter types. - Move include/linux/xsched_types.h -> include/uapi/linux/xsched for user-space visibility - Move include/uapi/linux/xcu_vstream.h -> include/uapi/linux/xsched - Fixes errors: "conflicting types" and "struct not visible" Fixes: 832cfa264d7c ("xsched: add xsched_{set,get}attr syscall") Signed-off-by: Liu Kai <liukai284(a)huawei.com> --- include/linux/sched.h | 2 +- include/linux/vstream.h | 2 +- include/linux/xcu_group.h | 2 +- include/linux/xsched.h | 4 ++-- .../xsched_types.h => uapi/linux/xsched/types.h} | 14 ++++++++------ include/uapi/linux/{ => xsched}/xcu_vstream.h | 6 +++--- init/init_task.c | 2 +- 7 files changed, 17 insertions(+), 15 deletions(-) rename include/{linux/xsched_types.h => uapi/linux/xsched/types.h} (59%) rename include/uapi/linux/{ => xsched}/xcu_vstream.h (92%) diff --git a/include/linux/sched.h b/include/linux/sched.h index bb23790fd2d3..321abdc384da 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -42,7 +42,7 @@ #include <linux/kabi.h> #ifdef CONFIG_XCU_SCHEDULER -#include <linux/xsched_types.h> +#include <uapi/linux/xsched/types.h> #endif /* task_struct member predeclarations (sorted alphabetically): */ diff --git a/include/linux/vstream.h b/include/linux/vstream.h index 7d99e416624f..227bbf77085e 100644 --- a/include/linux/vstream.h +++ b/include/linux/vstream.h @@ -2,7 +2,7 @@ #ifndef _LINUX_VSTREAM_H #define _LINUX_VSTREAM_H -#include <uapi/linux/xcu_vstream.h> +#include <uapi/linux/xsched/xcu_vstream.h> #include <linux/ktime.h> #define MAX_VSTREAM_SIZE 2048 diff --git a/include/linux/xcu_group.h b/include/linux/xcu_group.h index c129dca32c51..d7d6972e7f5c 100644 --- a/include/linux/xcu_group.h +++ b/include/linux/xcu_group.h @@ -3,7 +3,7 @@ #define __XSCHED_XCU_GROUP_H__ #include <linux/idr.h> -#include <uapi/linux/xcu_vstream.h> +#include <uapi/linux/xsched/xcu_vstream.h> #ifndef CONFIG_XSCHED_NR_CUS #define CONFIG_XSCHED_NR_CUS 128 diff --git a/include/linux/xsched.h b/include/linux/xsched.h index 46fe6ae2bc77..86b248a18f97 100644 --- a/include/linux/xsched.h +++ b/include/linux/xsched.h @@ -4,10 +4,10 @@ #include <linux/cgroup.h> #include <linux/kref.h> +#include <linux/math64.h> #include <linux/vstream.h> #include <linux/xcu_group.h> -#include <linux/xsched_types.h> -#include <linux/math64.h> +#include <uapi/linux/xsched/types.h> #define XSCHED_LOG_PREFIX "XSched" #define XSCHED_INFO(fmt, ...) \ diff --git a/include/linux/xsched_types.h b/include/uapi/linux/xsched/types.h similarity index 59% rename from include/linux/xsched_types.h rename to include/uapi/linux/xsched/types.h index f52fe32d5198..e5f11a2973e8 100644 --- a/include/linux/xsched_types.h +++ b/include/uapi/linux/xsched/types.h @@ -1,13 +1,15 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _XSCHED_TYPE_H -#define _XSCHED_TYPE_H +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_LINUX_XSCHED_TYPES_H +#define _UAPI_LINUX_XSCHED_TYPES_H + +#include <linux/types.h> struct xsched_attr { /* Scheduling class type, from enum xcu_sched_class */ - unsigned int xsched_class; + __u32 xsched_class; /* RT scheduling priority, from enum xse_prio */ - unsigned int xsched_priority; + __u32 xsched_priority; }; enum xcu_sched_class { @@ -24,4 +26,4 @@ enum xse_prio { XSE_PRIO_DFLT = XSE_PRIO_LOW }; -#endif /* ! _XSCHED_TYPE_H */ +#endif /* _UAPI_LINUX_XSCHED_TYPES_H */ diff --git a/include/uapi/linux/xcu_vstream.h b/include/uapi/linux/xsched/xcu_vstream.h similarity index 92% rename from include/uapi/linux/xcu_vstream.h rename to include/uapi/linux/xsched/xcu_vstream.h index b60c0e0e15f5..4b3abf386a1c 100644 --- a/include/uapi/linux/xcu_vstream.h +++ b/include/uapi/linux/xsched/xcu_vstream.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -#ifndef _UAPI_XCU_VSTREAM_H -#define _UAPI_XCU_VSTREAM_H +#ifndef _UAPI_LINUX_XSCHED_XCU_VSTREAM_H +#define _UAPI_LINUX_XSCHED_XCU_VSTREAM_H #include <linux/types.h> @@ -74,4 +74,4 @@ typedef struct vstream_args { KABI_RESERVE_BYTES(2, 8); } vstream_args_t; -#endif /* _UAPI_LINUX_SCHED_H */ +#endif /* _UAPI_LINUX_XSCHED_XCU_VSTREAM_H */ diff --git a/init/init_task.c b/init/init_task.c index 61a6345708c8..9fd44251b8b7 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -15,7 +15,7 @@ #include <linux/uaccess.h> #ifdef CONFIG_XCU_SCHEDULER -#include <linux/xsched_types.h> +#include <uapi/linux/xsched/types.h> #endif static struct signal_struct init_signals = { -- 2.34.1

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[PATCH OLK-5.10] locking/rwsem: Optimize down_read_trylock() under highly contended case
by Tengda Wu 18 Dec '25

18 Dec '25

From: Muchun Song <songmuchun(a)bytedance.com> mainline inclusion from mainline-v5.16-rc3 commit 14c24048841151548a3f4d9e218510c844c1b737 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDE51T Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- We found that a process with 10 thousnads threads has been encountered a regression problem from Linux-v4.14 to Linux-v5.4. It is a kind of workload which will concurrently allocate lots of memory in different threads sometimes. In this case, we will see the down_read_trylock() with a high hotspot. Therefore, we suppose that rwsem has a regression at least since Linux-v5.4. In order to easily debug this problem, we write a simply benchmark to create the similar situation lile the following. ```c++ #include <sys/mman.h> #include <sys/time.h> #include <sys/resource.h> #include <sched.h> #include <cstdio> #include <cassert> #include <thread> #include <vector> #include <chrono> volatile int mutex; void trigger(int cpu, char* ptr, std::size_t sz) { cpu_set_t set; CPU_ZERO(&set); CPU_SET(cpu, &set); assert(pthread_setaffinity_np(pthread_self(), sizeof(set), &set) == 0); while (mutex); for (std::size_t i = 0; i < sz; i += 4096) { *ptr = '\0'; ptr += 4096; } } int main(int argc, char* argv[]) { std::size_t sz = 100; if (argc > 1) sz = atoi(argv[1]); auto nproc = std::thread::hardware_concurrency(); std::vector<std::thread> thr; sz <<= 30; auto* ptr = mmap(nullptr, sz, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); assert(ptr != MAP_FAILED); char* cptr = static_cast<char*>(ptr); auto run = sz / nproc; run = (run >> 12) << 12; mutex = 1; for (auto i = 0U; i < nproc; ++i) { thr.emplace_back(std::thread([i, cptr, run]() { trigger(i, cptr, run); })); cptr += run; } rusage usage_start; getrusage(RUSAGE_SELF, &usage_start); auto start = std::chrono::system_clock::now(); mutex = 0; for (auto& t : thr) t.join(); rusage usage_end; getrusage(RUSAGE_SELF, &usage_end); auto end = std::chrono::system_clock::now(); timeval utime; timeval stime; timersub(&usage_end.ru_utime, &usage_start.ru_utime, &utime); timersub(&usage_end.ru_stime, &usage_start.ru_stime, &stime); printf("usr: %ld.%06ld\n", utime.tv_sec, utime.tv_usec); printf("sys: %ld.%06ld\n", stime.tv_sec, stime.tv_usec); printf("real: %lu\n", std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count()); return 0; } ``` The functionality of above program is simply which creates `nproc` threads and each of them are trying to touch memory (trigger page fault) on different CPU. Then we will see the similar profile by `perf top`. 25.55% [kernel] [k] down_read_trylock 14.78% [kernel] [k] handle_mm_fault 13.45% [kernel] [k] up_read 8.61% [kernel] [k] clear_page_erms 3.89% [kernel] [k] __do_page_fault The highest hot instruction, which accounts for about 92%, in down_read_trylock() is cmpxchg like the following. 91.89 │ lock cmpxchg %rdx,(%rdi) Sice the problem is found by migrating from Linux-v4.14 to Linux-v5.4, so we easily found that the commit ddb20d1d3aed ("locking/rwsem: Optimize down_read_trylock()") caused the regression. The reason is that the commit assumes the rwsem is not contended at all. But it is not always true for mmap lock which could be contended with thousands threads. So most threads almost need to run at least 2 times of "cmpxchg" to acquire the lock. The overhead of atomic operation is higher than non-atomic instructions, which caused the regression. By using the above benchmark, the real executing time on a x86-64 system before and after the patch were: Before Patch After Patch # of Threads real real reduced by ------------ ------ ------ ---------- 1 65,373 65,206 ~0.0% 4 15,467 15,378 ~0.5% 40 6,214 5,528 ~11.0% For the uncontended case, the new down_read_trylock() is the same as before. For the contended cases, the new down_read_trylock() is faster than before. The more contended, the more fast. Signed-off-by: Muchun Song <songmuchun(a)bytedance.com> Signed-off-by: Peter Zijlstra (Intel) <peterz(a)infradead.org> Acked-by: Waiman Long <longman(a)redhat.com> Link: https://lore.kernel.org/r/20211118094455.9068-1-songmuchun@bytedance.com Signed-off-by: Tengda Wu <wutengda2(a)huawei.com> --- kernel/locking/rwsem.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c index cc5cc889b5b7..e32587c141a1 100644 --- a/kernel/locking/rwsem.c +++ b/kernel/locking/rwsem.c @@ -1375,17 +1375,14 @@ static inline int __down_read_trylock(struct rw_semaphore *sem) DEBUG_RWSEMS_WARN_ON(sem->magic != sem, sem); - /* - * Optimize for the case when the rwsem is not locked at all. - */ - tmp = RWSEM_UNLOCKED_VALUE; - do { + tmp = atomic_long_read(&sem->count); + while (!(tmp & RWSEM_READ_FAILED_MASK)) { if (atomic_long_try_cmpxchg_acquire(&sem->count, &tmp, - tmp + RWSEM_READER_BIAS)) { + tmp + RWSEM_READER_BIAS)) { rwsem_set_reader_owned(sem); return 1; } - } while (!(tmp & RWSEM_READ_FAILED_MASK)); + } return 0; } -- 2.34.1

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[openeuler:openEuler-1.0-LTS] BUILD SUCCESS 4e9c55920995d70b3e88b60c69753df54b03fdf4
by kernel test robot 18 Dec '25

18 Dec '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 4e9c55920995d70b3e88b60c69753df54b03fdf4 !19703 ppp: associate skb with a device at tx elapsed time: 1467m configs tested: 36 configs skipped: 10 The following configs have been built successfully. More configs may be tested in the coming days. tested configs: arm64 allmodconfig gcc-15.1.0 arm64 allnoconfig gcc-15.1.0 arm64 defconfig gcc-15.1.0 arm64 randconfig-001-20251218 gcc-5.5.0 arm64 randconfig-002-20251218 gcc-10.5.0 arm64 randconfig-003-20251218 gcc-14.3.0 arm64 randconfig-004-20251218 gcc-5.5.0 x86_64 allmodconfig clang-22 x86_64 allnoconfig clang-22 x86_64 allyesconfig clang-22 x86_64 buildonly-randconfig-001-20251218 gcc-14 x86_64 buildonly-randconfig-002-20251218 gcc-14 x86_64 buildonly-randconfig-003-20251218 clang-22 x86_64 buildonly-randconfig-004-20251218 gcc-14 x86_64 buildonly-randconfig-005-20251218 gcc-14 x86_64 buildonly-randconfig-006-20251218 gcc-14 x86_64 defconfig gcc-14 x86_64 randconfig-001-20251218 clang-22 x86_64 randconfig-002-20251218 clang-22 x86_64 randconfig-003-20251218 clang-22 x86_64 randconfig-004-20251218 clang-22 x86_64 randconfig-005-20251218 clang-22 x86_64 randconfig-006-20251218 clang-22 x86_64 randconfig-011-20251218 gcc-14 x86_64 randconfig-012-20251218 gcc-14 x86_64 randconfig-013-20251218 clang-22 x86_64 randconfig-014-20251218 gcc-12 x86_64 randconfig-015-20251218 gcc-14 x86_64 randconfig-016-20251218 gcc-14 x86_64 randconfig-071-20251218 gcc-14 x86_64 randconfig-072-20251218 gcc-14 x86_64 randconfig-073-20251218 gcc-12 x86_64 randconfig-074-20251218 clang-22 x86_64 randconfig-075-20251218 gcc-12 x86_64 randconfig-076-20251218 clang-22 x86_64 rhel-9.4-rust clang-22 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6] timers: Fix NULL function pointer race in timer_shutdown_sync()
by Jinjie Ruan 18 Dec '25

18 Dec '25

From: Yipeng Zou <zouyipeng(a)huawei.com> stable inclusion from stable-v6.6.118 commit 6665fbd7730b26d770c232b20d1b907e6a67a914 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEZ3 CVE: CVE-2025-68214 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 20739af07383e6eb1ec59dcd70b72ebfa9ac362c upstream. There is a race condition between timer_shutdown_sync() and timer expiration that can lead to hitting a WARN_ON in expire_timers(). The issue occurs when timer_shutdown_sync() clears the timer function to NULL while the timer is still running on another CPU. The race scenario looks like this: CPU0 CPU1 <SOFTIRQ> lock_timer_base() expire_timers() base->running_timer = timer; unlock_timer_base() [call_timer_fn enter] mod_timer() ... timer_shutdown_sync() lock_timer_base() // For now, will not detach the timer but only clear its function to NULL if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() [call_timer_fn exit] lock_timer_base() base->running_timer = NULL; unlock_timer_base() ... // Now timer is pending while its function set to NULL. // next timer trigger <SOFTIRQ> expire_timers() WARN_ON_ONCE(!fn) // hit ... lock_timer_base() // Now timer will detach if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() The problem is that timer_shutdown_sync() clears the timer function regardless of whether the timer is currently running. This can leave a pending timer with a NULL function pointer, which triggers the WARN_ON_ONCE(!fn) check in expire_timers(). Fix this by only clearing the timer function when actually detaching the timer. If the timer is running, leave the function pointer intact, which is safe because the timer will be properly detached when it finishes running. Fixes: 0cc04e80458a ("timers: Add shutdown mechanism to the internal functions") Signed-off-by: Yipeng Zou <zouyipeng(a)huawei.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20251122093942.301559-1-zouyipeng@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- kernel/time/timer.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 63a8ce7177dd..4a2aeaa85af3 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1413,10 +1413,11 @@ static int __try_to_del_timer_sync(struct timer_list *timer, bool shutdown) base = lock_timer_base(timer, &flags); - if (base->running_timer != timer) + if (base->running_timer != timer) { ret = detach_if_pending(timer, base, true); - if (shutdown) - timer->function = NULL; + if (shutdown) + timer->function = NULL; + } raw_spin_unlock_irqrestore(&base->lock, flags); -- 2.34.1

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[PATCH OLK-5.10] timers: Fix NULL function pointer race in timer_shutdown_sync()
by Jinjie Ruan 18 Dec '25

18 Dec '25

From: Yipeng Zou <zouyipeng(a)huawei.com> stable inclusion from stable-v6.6.118 commit 6665fbd7730b26d770c232b20d1b907e6a67a914 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEZ3 CVE: CVE-2025-68214 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 20739af07383e6eb1ec59dcd70b72ebfa9ac362c upstream. There is a race condition between timer_shutdown_sync() and timer expiration that can lead to hitting a WARN_ON in expire_timers(). The issue occurs when timer_shutdown_sync() clears the timer function to NULL while the timer is still running on another CPU. The race scenario looks like this: CPU0 CPU1 <SOFTIRQ> lock_timer_base() expire_timers() base->running_timer = timer; unlock_timer_base() [call_timer_fn enter] mod_timer() ... timer_shutdown_sync() lock_timer_base() // For now, will not detach the timer but only clear its function to NULL if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() [call_timer_fn exit] lock_timer_base() base->running_timer = NULL; unlock_timer_base() ... // Now timer is pending while its function set to NULL. // next timer trigger <SOFTIRQ> expire_timers() WARN_ON_ONCE(!fn) // hit ... lock_timer_base() // Now timer will detach if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() The problem is that timer_shutdown_sync() clears the timer function regardless of whether the timer is currently running. This can leave a pending timer with a NULL function pointer, which triggers the WARN_ON_ONCE(!fn) check in expire_timers(). Fix this by only clearing the timer function when actually detaching the timer. If the timer is running, leave the function pointer intact, which is safe because the timer will be properly detached when it finishes running. Fixes: 0cc04e80458a ("timers: Add shutdown mechanism to the internal functions") Signed-off-by: Yipeng Zou <zouyipeng(a)huawei.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20251122093942.301559-1-zouyipeng@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- kernel/time/timer.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index c1b52dab3951..472c97733b2b 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1374,10 +1374,11 @@ static int __try_to_del_timer_sync(struct timer_list *timer, bool shutdown) base = lock_timer_base(timer, &flags); - if (base->running_timer != timer) + if (base->running_timer != timer) { ret = detach_if_pending(timer, base, true); - if (shutdown) - timer->function = NULL; + if (shutdown) + timer->function = NULL; + } raw_spin_unlock_irqrestore(&base->lock, flags); -- 2.34.1

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[PATCH OLK-6.6] usb: storage: Fix memory leak in USB bulk transport
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Desnes Nunes <desnesn(a)redhat.com> stable inclusion from stable-v6.6.119 commit cb1401b5bcc2feb5b038fc4b512e5968b016e05e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDF46 CVE: CVE-2025-68288 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 41e99fe2005182139b1058db71f0d241f8f0078c upstream. A kernel memory leak was identified by the 'ioctl_sg01' test from Linux Test Project (LTP). The following bytes were mainly observed: 0x53425355. When USB storage devices incorrectly skip the data phase with status data, the code extracts/validates the CSW from the sg buffer, but fails to clear it afterwards. This leaves status protocol data in srb's transfer buffer, such as the US_BULK_CS_SIGN 'USBS' signature observed here. Thus, this can lead to USB protocols leaks to user space through SCSI generic (/dev/sg*) interfaces, such as the one seen here when the LTP test requested 512 KiB. Fix the leak by zeroing the CSW data in srb's transfer buffer immediately after the validation of devices that skip data phase. Note: Differently from CVE-2018-1000204, which fixed a big leak by zero- ing pages at allocation time, this leak occurs after allocation, when USB protocol data is written to already-allocated sg pages. Fixes: a45b599ad808 ("scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()") Cc: stable <stable(a)kernel.org> Signed-off-by: Desnes Nunes <desnesn(a)redhat.com> Reviewed-by: Alan Stern <stern(a)rowland.harvard.edu> Link: https://patch.msgid.link/20251031043436.55929-1-desnesn@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/usb/storage/transport.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index 7449e379077a..f79b449d0f11 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -1204,7 +1204,23 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) US_BULK_CS_WRAP_LEN && bcs->Signature == cpu_to_le32(US_BULK_CS_SIGN)) { + unsigned char buf[US_BULK_CS_WRAP_LEN]; + usb_stor_dbg(us, "Device skipped data phase\n"); + + /* + * Devices skipping data phase might leave CSW data in srb's + * transfer buffer. Zero it to prevent USB protocol leakage. + */ + sg = NULL; + offset = 0; + memset(buf, 0, sizeof(buf)); + if (usb_stor_access_xfer_buf(buf, + US_BULK_CS_WRAP_LEN, srb, &sg, + &offset, TO_XFER_BUF) != + US_BULK_CS_WRAP_LEN) + usb_stor_dbg(us, "Failed to clear CSW data\n"); + scsi_set_resid(srb, transfer_length); goto skipped_data_phase; } -- 2.52.0

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[PATCH OLK-5.10] usb: storage: Fix memory leak in USB bulk transport
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Desnes Nunes <desnesn(a)redhat.com> stable inclusion from stable-v5.10.247 commit 83f0241959831586d9b6d47f6bd5d3dec8f43bf0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDF46 CVE: CVE-2025-68288 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 41e99fe2005182139b1058db71f0d241f8f0078c upstream. A kernel memory leak was identified by the 'ioctl_sg01' test from Linux Test Project (LTP). The following bytes were mainly observed: 0x53425355. When USB storage devices incorrectly skip the data phase with status data, the code extracts/validates the CSW from the sg buffer, but fails to clear it afterwards. This leaves status protocol data in srb's transfer buffer, such as the US_BULK_CS_SIGN 'USBS' signature observed here. Thus, this can lead to USB protocols leaks to user space through SCSI generic (/dev/sg*) interfaces, such as the one seen here when the LTP test requested 512 KiB. Fix the leak by zeroing the CSW data in srb's transfer buffer immediately after the validation of devices that skip data phase. Note: Differently from CVE-2018-1000204, which fixed a big leak by zero- ing pages at allocation time, this leak occurs after allocation, when USB protocol data is written to already-allocated sg pages. Fixes: a45b599ad808 ("scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()") Cc: stable <stable(a)kernel.org> Signed-off-by: Desnes Nunes <desnesn(a)redhat.com> Reviewed-by: Alan Stern <stern(a)rowland.harvard.edu> Link: https://patch.msgid.link/20251031043436.55929-1-desnesn@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/usb/storage/transport.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index 7cc8813f5d8c..9e24d51c3297 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -1199,7 +1199,23 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) US_BULK_CS_WRAP_LEN && bcs->Signature == cpu_to_le32(US_BULK_CS_SIGN)) { + unsigned char buf[US_BULK_CS_WRAP_LEN]; + usb_stor_dbg(us, "Device skipped data phase\n"); + + /* + * Devices skipping data phase might leave CSW data in srb's + * transfer buffer. Zero it to prevent USB protocol leakage. + */ + sg = NULL; + offset = 0; + memset(buf, 0, sizeof(buf)); + if (usb_stor_access_xfer_buf(buf, + US_BULK_CS_WRAP_LEN, srb, &sg, + &offset, TO_XFER_BUF) != + US_BULK_CS_WRAP_LEN) + usb_stor_dbg(us, "Failed to clear CSW data\n"); + scsi_set_resid(srb, transfer_length); goto skipped_data_phase; } -- 2.52.0

2 1

[PATCH openEuler-1.0-LTS] scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> mainline inclusion from mainline-v6.18-rc7 commit e6965188f84a7883e6a0d3448e86b0cf29b24dfc category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEZL CVE: CVE-2025-68229 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ... Cc: stable(a)vger.kernel.org Fixes: 2628b352c3d4 ("tcm_loop: Show address of tpg in configfs") Signed-off-by: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> Reviewed-by: Chaitanya Kulkarni <kch(a)nvidia.com> Reviewed-by: Allen Pais <apais(a)linux.microsoft.com> Link: https://patch.msgid.link/1762370746-6304-1-git-send-email-hamzamahfooz@linu… Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/target/loopback/tcm_loop.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index bc8918f382e4..f7c611a1a530 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -963,6 +963,9 @@ static ssize_t tcm_loop_tpg_address_show(struct config_item *item, struct tcm_loop_tpg, tl_se_tpg); struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; + if (!tl_hba->sh) + return -ENODEV; + return snprintf(page, PAGE_SIZE, "%d:0:%d\n", tl_hba->sh->host_no, tl_tpg->tl_tpgt); } -- 2.52.0

2 1

[PATCH OLK-6.6] scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> stable inclusion from stable-v6.6.118 commit a6ef60898ddaf1414592ce3e5b0d94276d631663 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEZL CVE: CVE-2025-68229 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e6965188f84a7883e6a0d3448e86b0cf29b24dfc upstream. If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ... Cc: stable(a)vger.kernel.org Fixes: 2628b352c3d4 ("tcm_loop: Show address of tpg in configfs") Signed-off-by: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> Reviewed-by: Chaitanya Kulkarni <kch(a)nvidia.com> Reviewed-by: Allen Pais <apais(a)linux.microsoft.com> Link: https://patch.msgid.link/1762370746-6304-1-git-send-email-hamzamahfooz@linu… Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/target/loopback/tcm_loop.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 4ec99a55ac30..db13c6a379d8 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -893,6 +893,9 @@ static ssize_t tcm_loop_tpg_address_show(struct config_item *item, struct tcm_loop_tpg, tl_se_tpg); struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; + if (!tl_hba->sh) + return -ENODEV; + return snprintf(page, PAGE_SIZE, "%d:0:%d\n", tl_hba->sh->host_no, tl_tpg->tl_tpgt); } -- 2.52.0

2 1

[PATCH OLK-5.10] scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> stable inclusion from stable-v5.10.247 commit 3d8c517f6eb27e47b1a198e05f8023038329b40b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEZL CVE: CVE-2025-68229 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit e6965188f84a7883e6a0d3448e86b0cf29b24dfc upstream. If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ... Cc: stable(a)vger.kernel.org Fixes: 2628b352c3d4 ("tcm_loop: Show address of tpg in configfs") Signed-off-by: Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> Reviewed-by: Chaitanya Kulkarni <kch(a)nvidia.com> Reviewed-by: Allen Pais <apais(a)linux.microsoft.com> Link: https://patch.msgid.link/1762370746-6304-1-git-send-email-hamzamahfooz@linu… Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- drivers/target/loopback/tcm_loop.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 5ae5d94c5b93..9360148e1f4e 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -933,6 +933,9 @@ static ssize_t tcm_loop_tpg_address_show(struct config_item *item, struct tcm_loop_tpg, tl_se_tpg); struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; + if (!tl_hba->sh) + return -ENODEV; + return snprintf(page, PAGE_SIZE, "%d:0:%d\n", tl_hba->sh->host_no, tl_tpg->tl_tpgt); } -- 2.52.0

2 1

[PATCH OLK-6.6] [Huawei] mm/mem_reliable: use percise count during limit check
by Wupeng Ma 18 Dec '25

18 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8USBA -------------------------------- If the fallback for memory reliable is enabled, direct reclaim will be used if the task's reliable memory limit is reached and pages need to be released. However, percpu_counter_read_positive() provides a fast but imprecise counter reading. During limit enforcement, this inaccuracy may cause the observed usage to appear significantly larger than the actual value. As a result, even repeated constrained reclaim attempts may fail to bring memory usage below the limit, eventually leading to OOM. To avoid this issue, use an accurate counter check when determining whether the reliable memory limit has been exceeded. Fixes: 200321e8a69e ("mm: mem_reliable: Add limiting the usage of reliable memory") Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> --- include/linux/mem_reliable.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/include/linux/mem_reliable.h b/include/linux/mem_reliable.h index 1e928ff69d99..9047918e1331 100644 --- a/include/linux/mem_reliable.h +++ b/include/linux/mem_reliable.h @@ -169,11 +169,15 @@ static inline void shmem_reliable_folio_add(struct folio *folio, int nr_page) percpu_counter_add(&shmem_reliable_pages, nr_page); } - static inline bool reliable_mem_limit_check(unsigned long nr_page) { - return (task_reliable_used_pages() + nr_page) <= - (task_reliable_limit >> PAGE_SHIFT); + s64 nr_task_pages; + + /* limit check need precise counter, use sum rather than read */ + nr_task_pages = percpu_counter_sum_positive(&pagecache_reliable_pages); + nr_task_pages += percpu_counter_sum_positive(&anon_reliable_pages); + + return (nr_task_pages + nr_page) <= (task_reliable_limit >> PAGE_SHIFT); } static inline bool mem_reliable_should_reclaim(void) -- 2.43.0

2 1

[PATCH OLK-6.6] mm: mem_reliable: fix task reliable counter during fork
by Wupeng Ma 18 Dec '25

18 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8USBA -------------------------------- Commit 8fc2546f8508 ("proc: mem_reliable: Count reliable memory usage of reliable tasks") introduce counting reliable memory allocated by the reliable user tasks which need to update reliable counter after rss. However during commit 1741ac635805 ("mm/memory: optimize fork() with PTE-mapped THP") which introduce PTE batching when consecutive present PTEs map consecutive pages of the same large folio and share identical bits aside from PFNs. This patch introuce rss modification without updating memory reliale's counter which lead to memory relabies's counter inbalanced during fork with thp disabled. Fix this by updating memory reliable's counter after rss updates. Fixes: 1741ac635805 ("mm/memory: optimize fork() with PTE-mapped THP") Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> --- mm/memory.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index d5932b924e08..75900321740f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -937,6 +937,7 @@ copy_present_page(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma folio_add_new_anon_rmap(new_folio, dst_vma, addr, RMAP_EXCLUSIVE); folio_add_lru_vma(new_folio, dst_vma); rss[MM_ANONPAGES]++; + add_reliable_folio_counter(new_folio, dst_vma->vm_mm, 1); /* All done, just insert the new page copy in the child */ pte = mk_pte(&new_folio->page, dst_vma->vm_page_prot); @@ -1021,6 +1022,7 @@ copy_present_ptes(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma folio_dup_file_rmap_ptes(folio, page, nr); rss[mm_counter_file(folio)] += nr; } + add_reliable_folio_counter(folio, dst_vma->vm_mm, nr); if (any_writable) pte = pte_mkwrite(pte, src_vma); __copy_present_ptes(dst_vma, src_vma, dst_pte, src_pte, pte, @@ -1048,8 +1050,8 @@ copy_present_ptes(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma } else { folio_dup_file_rmap_pte(folio, page); rss[mm_counter_file(folio)]++; - add_reliable_folio_counter(folio, dst_vma->vm_mm, 1); } + add_reliable_folio_counter(folio, dst_vma->vm_mm, 1); copy_pte: __copy_present_ptes(dst_vma, src_vma, dst_pte, src_pte, pte, addr, 1); -- 2.43.0

2 1

[openeuler:openEuler-1.0-LTS 1946/1946] kernel/time/hrtimer.o: warning: objtool: hrtimer_start_range_ns()+0x91b: unreachable instruction
by kernel test robot 18 Dec '25

18 Dec '25

Hi Phil, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 4e9c55920995d70b3e88b60c69753df54b03fdf4 commit: 40ecfb28732cefd0c5658f7c10543bbc4cd41cb8 [1946/1946] hrtimer: Prevent queuing of hrtimer without a function callback config: x86_64-randconfig-002-20251218 (https://download.01.org/0day-ci/archive/20251218/202512181230.mRJPKu3s-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251218/202512181230.mRJPKu3s-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512181230.mRJPKu3s-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:2: In file included from include/linux/compiler_types.h:59: include/linux/compiler-clang.h:20:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 20 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:354:9: note: previous definition is here 354 | #define __SANITIZE_ADDRESS__ 1 | ^ kernel/time/hrtimer.c:130:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 130 | [CLOCK_REALTIME] = HRTIMER_BASE_REALTIME, | ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:128:27: note: previous initialization is here 128 | [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:131:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 131 | [CLOCK_MONOTONIC] = HRTIMER_BASE_MONOTONIC, | ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:128:27: note: previous initialization is here 128 | [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:132:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 132 | [CLOCK_BOOTTIME] = HRTIMER_BASE_BOOTTIME, | ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:128:27: note: previous initialization is here 128 | [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:133:17: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 133 | [CLOCK_TAI] = HRTIMER_BASE_TAI, | ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:128:27: note: previous initialization is here 128 | [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, | ^~~~~~~~~~~~~~~~~~~~~~~ 5 warnings generated. >> kernel/time/hrtimer.o: warning: objtool: hrtimer_start_range_ns()+0x91b: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6] mm: mem_reliable: fix task reliable counter during fork
by Wupeng Ma 18 Dec '25

18 Dec '25

Offering: HULK hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8USBA -------------------------------- Commit 8fc2546f8508 ("proc: mem_reliable: Count reliable memory usage of reliable tasks") introduce counting reliable memory allocated by the reliable user tasks which need to update reliable counter after rss. However during commit 1741ac635805 ("mm/memory: optimize fork() with PTE-mapped THP") which introduce PTE batching when consecutive present PTEs map consecutive pages of the same large folio and share identical bits aside from PFNs. This patch introuce rss modification without updating memory reliale's counter which lead to memory relabies's counter inbalanced during fork with thp disabled. Fix this by updating memory reliable's counter after rss updates. Fixes: 1741ac635805 ("mm/memory: optimize fork() with PTE-mapped THP") Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> --- mm/memory.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index d5932b924e08..75900321740f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -937,6 +937,7 @@ copy_present_page(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma folio_add_new_anon_rmap(new_folio, dst_vma, addr, RMAP_EXCLUSIVE); folio_add_lru_vma(new_folio, dst_vma); rss[MM_ANONPAGES]++; + add_reliable_folio_counter(new_folio, dst_vma->vm_mm, 1); /* All done, just insert the new page copy in the child */ pte = mk_pte(&new_folio->page, dst_vma->vm_page_prot); @@ -1021,6 +1022,7 @@ copy_present_ptes(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma folio_dup_file_rmap_ptes(folio, page, nr); rss[mm_counter_file(folio)] += nr; } + add_reliable_folio_counter(folio, dst_vma->vm_mm, nr); if (any_writable) pte = pte_mkwrite(pte, src_vma); __copy_present_ptes(dst_vma, src_vma, dst_pte, src_pte, pte, @@ -1048,8 +1050,8 @@ copy_present_ptes(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma } else { folio_dup_file_rmap_pte(folio, page); rss[mm_counter_file(folio)]++; - add_reliable_folio_counter(folio, dst_vma->vm_mm, 1); } + add_reliable_folio_counter(folio, dst_vma->vm_mm, 1); copy_pte: __copy_present_ptes(dst_vma, src_vma, dst_pte, src_pte, pte, addr, 1); -- 2.43.0

2 1

[PATCH OLK-5.10] mm/mem_reliable: use percise count during limit check
by Wupeng Ma 18 Dec '25

18 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8USBA -------------------------------- If the fallback for memory reliable is enabled, direct reclaim will be used if the task's reliable memory limit is reached and pages need to be released. However, percpu_counter_read_positive() provides a fast but imprecise counter reading. During limit enforcement, this inaccuracy may cause the observed usage to appear significantly larger than the actual value. As a result, even repeated constrained reclaim attempts may fail to bring memory usage below the limit, eventually leading to OOM. To avoid this issue, use an accurate counter check when determining whether the reliable memory limit has been exceeded. Fixes: 8968270eb5fb ("mm: Add reliable memory use limit for user tasks") Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> --- include/linux/mem_reliable.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/mem_reliable.h b/include/linux/mem_reliable.h index dc1344b843b0..3b8964c1041b 100644 --- a/include/linux/mem_reliable.h +++ b/include/linux/mem_reliable.h @@ -111,8 +111,13 @@ static inline u64 task_reliable_used_pages(void) static inline bool reliable_mem_limit_check(unsigned long nr_page) { - return (task_reliable_used_pages() + nr_page) <= - (task_reliable_limit >> PAGE_SHIFT); + s64 nr_task_pages; + + /* limit check need precise counter, use sum rather than read */ + nr_task_pages = percpu_counter_sum_positive(&pagecache_reliable_pages); + nr_task_pages += percpu_counter_sum_positive(&anon_reliable_pages); + + return (nr_task_pages + nr_page) <= (task_reliable_limit >> PAGE_SHIFT); } static inline bool mem_reliable_should_reclaim(void) -- 2.43.0

2 1

[PATCH openEuler-1.0-LTS] mm/mem_reliable: use percise count during limit check
by Wupeng Ma 18 Dec '25

18 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8USBA -------------------------------- If the fallback for memory reliable is enabled, direct reclaim will be used if the task's reliable memory limit is reached and pages need to be released. However, percpu_counter_read_positive() provides a fast but imprecise counter reading. During limit enforcement, this inaccuracy may cause the observed usage to appear significantly larger than the actual value. As a result, even repeated constrained reclaim attempts may fail to bring memory usage below the limit, eventually leading to OOM. To avoid this issue, use an accurate counter check when determining whether the reliable memory limit has been exceeded. Fixes: 875ffd41499e ("mm: Do limit checking after memory allocation for memory reliable") Signed-off-by: Wupeng Ma <mawupeng1(a)huawei.com> --- include/linux/mem_reliable.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/mem_reliable.h b/include/linux/mem_reliable.h index c0eff851bbe7..d70146a59a3e 100644 --- a/include/linux/mem_reliable.h +++ b/include/linux/mem_reliable.h @@ -84,8 +84,9 @@ static inline bool reliable_mem_limit_check(unsigned long nr_page) { s64 num; - num = percpu_counter_read_positive(&pagecache_reliable_pages); - num += percpu_counter_read_positive(&anon_reliable_pages); + /* limit check need precise counter, use sum rather than read */ + num = percpu_counter_sum_positive(&pagecache_reliable_pages); + num += percpu_counter_sum_positive(&anon_reliable_pages); return num + nr_page <= task_reliable_limit / PAGE_SIZE; } -- 2.43.0

2 1

[PATCH OLK-5.10] drm/amdgpu/atom: Check kcalloc() for WS buffer in amdgpu_atom_execute_table_locked()
by Xinyu Zheng 18 Dec '25

18 Dec '25

From: Guangshuo Li <lgs201920130244(a)gmail.com> stable inclusion from stable-v6.12.58 commit 35f3fb86bb0158a298d6834e7e110dcaf07f490c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDDEV5 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ---------------------------------------------------------------------- [ Upstream commit cc9a8e238e42c1f43b98c097995137d644b69245 ] kcalloc() may fail. When WS is non-zero and allocation fails, ectx.ws remains NULL while ectx.ws_size is set, leading to a potential NULL pointer dereference in atom_get_src_int() when accessing WS entries. Return -ENOMEM on allocation failure to avoid the NULL dereference. Signed-off-by: Guangshuo Li <lgs201920130244(a)gmail.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: drivers/gpu/drm/amd/amdgpu/atom.c [context conflict] Signed-off-by: Xinyu Zheng <zhengxinyu6(a)huawei.com> --- drivers/gpu/drm/amd/amdgpu/atom.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 4cfc786699c7..11181ad13f31 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -1227,6 +1227,10 @@ static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, ectx.last_jump = 0; if (ws) ectx.ws = kcalloc(4, ws, GFP_KERNEL); + if (!ectx.ws) { + ret = -ENOMEM; + goto free; + } else ectx.ws = NULL; -- 2.34.1

2 1

[PATCH openEuler-1.0-LTS] nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Al Viro <viro(a)zeniv.linux.org.uk> mainline inclusion from mainline-v6.18-rc1 commit a890a2e339b929dbd843328f9a92a1625404fe63 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEWK CVE: CVE-2025-68185 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack. Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that. Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk> Signed-off-by: Anna Schumaker <anna.schumaker(a)oracle.com> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfs/nfs4proc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 29cb861ae449..83cb9f013fe0 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -352,7 +352,9 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent *p++ = htonl(attrs); /* bitmap */ *p++ = htonl(12); /* attribute buffer length */ *p++ = htonl(NF4DIR); + spin_lock(&dentry->d_lock); p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); + spin_unlock(&dentry->d_lock); readdir->pgbase = (char *)p - (char *)start; readdir->count -= readdir->pgbase; -- 2.52.0

2 1

[PATCH OLK-6.6] nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Al Viro <viro(a)zeniv.linux.org.uk> stable inclusion from stable-v6.6.117 commit eacfd08b26a062f1095b18719715bc82ad35312e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEWK CVE: CVE-2025-68185 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a890a2e339b929dbd843328f9a92a1625404fe63 ] Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack. Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that. Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk> Signed-off-by: Anna Schumaker <anna.schumaker(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfs/nfs4proc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e197bea6c6a9..5be8f1aceab8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -362,7 +362,9 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent *p++ = htonl(attrs); /* bitmap */ *p++ = htonl(12); /* attribute buffer length */ *p++ = htonl(NF4DIR); + spin_lock(&dentry->d_lock); p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); + spin_unlock(&dentry->d_lock); readdir->pgbase = (char *)p - (char *)start; readdir->count -= readdir->pgbase; -- 2.52.0

2 1

[PATCH OLK-5.10] nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
by Li Lingfeng 18 Dec '25

18 Dec '25

From: Al Viro <viro(a)zeniv.linux.org.uk> stable inclusion from stable-v5.10.247 commit e6cafe71eb3b5579b245ba1bd528a181e77f3df1 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDDEWK CVE: CVE-2025-68185 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a890a2e339b929dbd843328f9a92a1625404fe63 ] Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack. Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that. Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk> Signed-off-by: Anna Schumaker <anna.schumaker(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> --- fs/nfs/nfs4proc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 35c15d20a84e..39a337c00c5a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -368,7 +368,9 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent *p++ = htonl(attrs); /* bitmap */ *p++ = htonl(12); /* attribute buffer length */ *p++ = htonl(NF4DIR); + spin_lock(&dentry->d_lock); p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); + spin_unlock(&dentry->d_lock); readdir->pgbase = (char *)p - (char *)start; readdir->count -= readdir->pgbase; -- 2.52.0

2 1

[openeuler:openEuler-1.0-LTS 1945/1945] drivers/ssb/main.o: warning: objtool: missing symbol for section .exit.text
by kernel test robot 18 Dec '25

18 Dec '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 4e9c55920995d70b3e88b60c69753df54b03fdf4 commit: b8b6069cf2087545fe53ec920e8353133e9a70bf [1945/1945] ssb: Remove home-grown printk wrappers config: x86_64-buildonly-randconfig-001-20251217 (https://download.01.org/0day-ci/archive/20251218/202512180405.asM9sTF4-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251218/202512180405.asM9sTF4-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512180405.asM9sTF4-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/ssb/main.o: warning: objtool: missing symbol for section .exit.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 000/408] sched_ext
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (33): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl() Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Cheng-Yang Chou (1): sched_ext: Always use SMP versions in kernel/sched/ext.c Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Christophe Leroy (1): bpf: Remove arch_unprotect_bpf_trampoline() Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (2): sched_ext: create_dsq: Return -EEXIST on duplicate request sched_ext: Drop kfuncs marked for removal in 6.15 Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (4): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function bpf: Remove unnecessary err < 0 check in bpf_struct_ops_map_update_elem Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (151): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() sched_ext: Mark scx_bpf_dsq_move_set_[slice|vtime]() with KF_RCU sched_ext: Don't kick CPUs running higher classes sched_ext: Use SCX_TASK_READY test instead of tryget_task_struct() during class switch Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable and disable sched_ext configs Zqiang (1): sched_ext: Fix unsafe locking in the scx_dump_state() guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 3 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/configs/openeuler_defconfig | 2 + arch/x86/net/bpf_jit_comp.c | 126 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 100 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- 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41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 225 files changed, 24660 insertions(+), 3361 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

2 409

[PATCH OLK-5.10] nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl()
by Wang Tao 17 Dec '25

17 Dec '25

From: "Ewan D. Milne" <emilne(a)redhat.com> stable inclusion from stable-v5.10.247 commit 3d78e8e01251da032a5f7cbc9728e4ab1a5a5464 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDATPF CVE: CVE-2025-40261 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 0a2c5495b6d1ecb0fa18ef6631450f391a888256 upstream. nvme_fc_delete_assocation() waits for pending I/O to complete before returning, and an error can cause ->ioerr_work to be queued after cancel_work_sync() had been called. Move the call to cancel_work_sync() to be after nvme_fc_delete_association() to ensure ->ioerr_work is not running when the nvme_fc_ctrl object is freed. Otherwise the following can occur: [ 1135.911754] list_del corruption, ff2d24c8093f31f8->next is NULL [ 1135.917705] ------------[ cut here ]------------ [ 1135.922336] kernel BUG at lib/list_debug.c:52! [ 1135.926784] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 1135.931851] CPU: 48 UID: 0 PID: 726 Comm: kworker/u449:23 Kdump: loaded Not tainted 6.12.0 #1 PREEMPT(voluntary) [ 1135.943490] Hardware name: Dell Inc. PowerEdge R660/0HGTK9, BIOS 2.5.4 01/16/2025 [ 1135.950969] Workqueue: 0x0 (nvme-wq) [ 1135.954673] RIP: 0010:__list_del_entry_valid_or_report.cold+0xf/0x6f [ 1135.961041] Code: c7 c7 98 68 72 94 e8 26 45 fe ff 0f 0b 48 c7 c7 70 68 72 94 e8 18 45 fe ff 0f 0b 48 89 fe 48 c7 c7 80 69 72 94 e8 07 45 fe ff <0f> 0b 48 89 d1 48 c7 c7 a0 6a 72 94 48 89 c2 e8 f3 44 fe ff 0f 0b [ 1135.979788] RSP: 0018:ff579b19482d3e50 EFLAGS: 00010046 [ 1135.985015] RAX: 0000000000000033 RBX: ff2d24c8093f31f0 RCX: 0000000000000000 [ 1135.992148] RDX: 0000000000000000 RSI: ff2d24d6bfa1d0c0 RDI: ff2d24d6bfa1d0c0 [ 1135.999278] RBP: ff2d24c8093f31f8 R08: 0000000000000000 R09: ffffffff951e2b08 [ 1136.006413] R10: ffffffff95122ac8 R11: 0000000000000003 R12: ff2d24c78697c100 [ 1136.013546] R13: fffffffffffffff8 R14: 0000000000000000 R15: ff2d24c78697c0c0 [ 1136.020677] FS: 0000000000000000(0000) GS:ff2d24d6bfa00000(0000) knlGS:0000000000000000 [ 1136.028765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1136.034510] CR2: 00007fd207f90b80 CR3: 000000163ea22003 CR4: 0000000000f73ef0 [ 1136.041641] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1136.048776] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 1136.055910] PKRU: 55555554 [ 1136.058623] Call Trace: [ 1136.061074] <TASK> [ 1136.063179] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.067540] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.071898] ? move_linked_works+0x4a/0xa0 [ 1136.075998] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.081744] ? __die_body.cold+0x8/0x12 [ 1136.085584] ? die+0x2e/0x50 [ 1136.088469] ? do_trap+0xca/0x110 [ 1136.091789] ? do_error_trap+0x65/0x80 [ 1136.095543] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.101289] ? exc_invalid_op+0x50/0x70 [ 1136.105127] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.110874] ? asm_exc_invalid_op+0x1a/0x20 [ 1136.115059] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.120806] move_linked_works+0x4a/0xa0 [ 1136.124733] worker_thread+0x216/0x3a0 [ 1136.128485] ? __pfx_worker_thread+0x10/0x10 [ 1136.132758] kthread+0xfa/0x240 [ 1136.135904] ? __pfx_kthread+0x10/0x10 [ 1136.139657] ret_from_fork+0x31/0x50 [ 1136.143236] ? __pfx_kthread+0x10/0x10 [ 1136.146988] ret_from_fork_asm+0x1a/0x30 [ 1136.150915] </TASK> Fixes: 19fce0470f05 ("nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context") Cc: stable(a)vger.kernel.org Tested-by: Marco Patalano <mpatalan(a)redhat.com> Reviewed-by: Justin Tee <justin.tee(a)broadcom.com> Signed-off-by: Ewan D. Milne <emilne(a)redhat.com> Signed-off-by: Keith Busch <kbusch(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Tao <wangtao554(a)huawei.com> --- drivers/nvme/host/fc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 92db88ceb96f..55a329f20148 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -3251,7 +3251,6 @@ nvme_fc_delete_ctrl(struct nvme_ctrl *nctrl) { struct nvme_fc_ctrl *ctrl = to_fc_ctrl(nctrl); - cancel_work_sync(&ctrl->ioerr_work); cancel_delayed_work_sync(&ctrl->connect_work); /* * kill the association on the link side. this will block @@ -3315,6 +3314,7 @@ nvme_fc_reset_ctrl_work(struct work_struct *work) /* will block will waiting for io to terminate */ nvme_fc_delete_association(ctrl); + cancel_work_sync(&ctrl->ioerr_work); if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) dev_err(ctrl->ctrl.device, -- 2.34.1

2 1

[PATCH OLK-6.6] nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl()
by Wang Tao 17 Dec '25

17 Dec '25

From: "Ewan D. Milne" <emilne(a)redhat.com> stable inclusion from stable-v6.6.118 commit 33f64600a12055219bda38b55320c62cdeda9167 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDATPF CVE: CVE-2025-40261 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 0a2c5495b6d1ecb0fa18ef6631450f391a888256 upstream. nvme_fc_delete_assocation() waits for pending I/O to complete before returning, and an error can cause ->ioerr_work to be queued after cancel_work_sync() had been called. Move the call to cancel_work_sync() to be after nvme_fc_delete_association() to ensure ->ioerr_work is not running when the nvme_fc_ctrl object is freed. Otherwise the following can occur: [ 1135.911754] list_del corruption, ff2d24c8093f31f8->next is NULL [ 1135.917705] ------------[ cut here ]------------ [ 1135.922336] kernel BUG at lib/list_debug.c:52! [ 1135.926784] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 1135.931851] CPU: 48 UID: 0 PID: 726 Comm: kworker/u449:23 Kdump: loaded Not tainted 6.12.0 #1 PREEMPT(voluntary) [ 1135.943490] Hardware name: Dell Inc. PowerEdge R660/0HGTK9, BIOS 2.5.4 01/16/2025 [ 1135.950969] Workqueue: 0x0 (nvme-wq) [ 1135.954673] RIP: 0010:__list_del_entry_valid_or_report.cold+0xf/0x6f [ 1135.961041] Code: c7 c7 98 68 72 94 e8 26 45 fe ff 0f 0b 48 c7 c7 70 68 72 94 e8 18 45 fe ff 0f 0b 48 89 fe 48 c7 c7 80 69 72 94 e8 07 45 fe ff <0f> 0b 48 89 d1 48 c7 c7 a0 6a 72 94 48 89 c2 e8 f3 44 fe ff 0f 0b [ 1135.979788] RSP: 0018:ff579b19482d3e50 EFLAGS: 00010046 [ 1135.985015] RAX: 0000000000000033 RBX: ff2d24c8093f31f0 RCX: 0000000000000000 [ 1135.992148] RDX: 0000000000000000 RSI: ff2d24d6bfa1d0c0 RDI: ff2d24d6bfa1d0c0 [ 1135.999278] RBP: ff2d24c8093f31f8 R08: 0000000000000000 R09: ffffffff951e2b08 [ 1136.006413] R10: ffffffff95122ac8 R11: 0000000000000003 R12: ff2d24c78697c100 [ 1136.013546] R13: fffffffffffffff8 R14: 0000000000000000 R15: ff2d24c78697c0c0 [ 1136.020677] FS: 0000000000000000(0000) GS:ff2d24d6bfa00000(0000) knlGS:0000000000000000 [ 1136.028765] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1136.034510] CR2: 00007fd207f90b80 CR3: 000000163ea22003 CR4: 0000000000f73ef0 [ 1136.041641] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1136.048776] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 1136.055910] PKRU: 55555554 [ 1136.058623] Call Trace: [ 1136.061074] <TASK> [ 1136.063179] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.067540] ? show_trace_log_lvl+0x1b0/0x2f0 [ 1136.071898] ? move_linked_works+0x4a/0xa0 [ 1136.075998] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.081744] ? __die_body.cold+0x8/0x12 [ 1136.085584] ? die+0x2e/0x50 [ 1136.088469] ? do_trap+0xca/0x110 [ 1136.091789] ? do_error_trap+0x65/0x80 [ 1136.095543] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.101289] ? exc_invalid_op+0x50/0x70 [ 1136.105127] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.110874] ? asm_exc_invalid_op+0x1a/0x20 [ 1136.115059] ? __list_del_entry_valid_or_report.cold+0xf/0x6f [ 1136.120806] move_linked_works+0x4a/0xa0 [ 1136.124733] worker_thread+0x216/0x3a0 [ 1136.128485] ? __pfx_worker_thread+0x10/0x10 [ 1136.132758] kthread+0xfa/0x240 [ 1136.135904] ? __pfx_kthread+0x10/0x10 [ 1136.139657] ret_from_fork+0x31/0x50 [ 1136.143236] ? __pfx_kthread+0x10/0x10 [ 1136.146988] ret_from_fork_asm+0x1a/0x30 [ 1136.150915] </TASK> Fixes: 19fce0470f05 ("nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context") Cc: stable(a)vger.kernel.org Tested-by: Marco Patalano <mpatalan(a)redhat.com> Reviewed-by: Justin Tee <justin.tee(a)broadcom.com> Signed-off-by: Ewan D. Milne <emilne(a)redhat.com> Signed-off-by: Keith Busch <kbusch(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: drivers/nvme/host/fc.c [Context conflicts.] Signed-off-by: Wang Tao <wangtao554(a)huawei.com> --- drivers/nvme/host/fc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 3e0da2422b33..3be93c49d23e 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -3242,13 +3242,13 @@ nvme_fc_delete_ctrl(struct nvme_ctrl *nctrl) { struct nvme_fc_ctrl *ctrl = to_fc_ctrl(nctrl); - cancel_work_sync(&ctrl->ioerr_work); cancel_delayed_work_sync(&ctrl->connect_work); /* * kill the association on the link side. this will block * waiting for io to terminate */ nvme_fc_delete_association(ctrl); + cancel_work_sync(&ctrl->ioerr_work); } static void -- 2.34.1

2 1

[PATCH OLK-6.6] usb: storage: sddr55: Reject out-of-bound new_pba
by Luo Gengkun 17 Dec '25

17 Dec '25

From: Tianchu Chen <flynnnchen(a)tencent.com> stable inclusion from stable-v6.6.119 commit 04a8a6393f3f2f471e05eacca33282dd30b01432 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDCQJA CVE: CVE-2025-40345 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ---------------------------------------------------------------------- commit b59d4fda7e7d0aff1043a7f742487cb829f5aac1 upstream. Discovered by Atuin - Automated Vulnerability Discovery Engine. new_pba comes from the status packet returned after each write. A bogus device could report values beyond the block count derived from info->capacity, letting the driver walk off the end of pba_to_lba[] and corrupt heap memory. Reject PBAs that exceed the computed block count and fail the transfer so we avoid touching out-of-range mapping entries. Signed-off-by: Tianchu Chen <flynnnchen(a)tencent.com> Cc: stable <stable(a)kernel.org> Link: https://patch.msgid.link/B2DC73A3EE1E3A1D+202511161322001664687@tencent.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Luo Gengkun <luogengkun2(a)huawei.com> --- drivers/usb/storage/sddr55.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c index 15dc25801cdc..f53b2471a21c 100644 --- a/drivers/usb/storage/sddr55.c +++ b/drivers/usb/storage/sddr55.c @@ -469,6 +469,12 @@ static int sddr55_write_data(struct us_data *us, new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) >> info->blockshift; + /* check if device-reported new_pba is out of range */ + if (new_pba >= (info->capacity >> (info->blockshift + info->pageshift))) { + result = USB_STOR_TRANSPORT_FAILED; + goto leave; + } + /* check status for error */ if (status[0] == 0xff && status[1] == 0x4) { info->pba_to_lba[new_pba] = BAD_BLOCK; -- 2.34.1

2 1

[PATCH OLK-6.6] mm: try skipping pinned page before unmapping in migration
by Nanyong Sun 17 Dec '25

17 Dec '25

hulk inclusion category: performance bugzilla: https://gitee.com/openeuler/kernel/issues/IDDIIR ----------------------------------------- Racy check if the page is pinned before unmapping to avoid page talbe unmaping and restoring, eventually migration will fail if page is pinned, so skip it at the beginning as much as possible, no lock here but the racy window is short. Signed-off-by: Nanyong Sun <sunnanyong(a)huawei.com> --- mm/migrate.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/mm/migrate.c b/mm/migrate.c index 4edd29d9a041..148e55fab012 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1290,6 +1290,14 @@ static int migrate_folio_unmap(new_folio_t get_new_folio, /* Establish migration ptes */ VM_BUG_ON_FOLIO(folio_test_anon(src) && !folio_test_ksm(src) && !anon_vma, src); + + /* + * Racy check here to avoid page table walking and modifications + * as much as possible. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto out; + try_to_migrate(src, mode == MIGRATE_ASYNC ? TTU_BATCH_FLUSH : 0); old_page_state |= PAGE_WAS_MAPPED; } @@ -1464,6 +1472,14 @@ static int unmap_and_move_huge_page(new_folio_t get_new_folio, if (folio_mapped(src)) { enum ttu_flags ttu = 0; + /* + * Racy check folio is pinned, try to avoid unnecessary page + * table unmapping and restoring, because the subsequent + * move_to_new_folio will eventually check the reference count. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto unlock_put_anon; + if (!folio_test_anon(src)) { /* * In shared mappings, try_to_unmap could potentially -- 2.34.1

2 1

[PATCH openEuler-26.09 000/399] sched_ext
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable and disable sched_ext configs guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 3 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/configs/openeuler_defconfig | 2 + arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 225 files changed, 24757 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

2 400

[PATCH OLK-6.6] mm: try skipping pinned page before unmapping in migration
by Nanyong Sun 17 Dec '25

17 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDDIIR ----------------------------------------- Racy check if the page is pinned before unmapping to avoid page talbe unmaping and restoring, eventually migration will fail if page is pinned, so skip it at the begining as much as possible, no lock here but the racy window is short. Signed-off-by: Nanyong Sun <sunnanyong(a)huawei.com> --- mm/migrate.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/mm/migrate.c b/mm/migrate.c index 4edd29d9a041..148e55fab012 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1290,6 +1290,14 @@ static int migrate_folio_unmap(new_folio_t get_new_folio, /* Establish migration ptes */ VM_BUG_ON_FOLIO(folio_test_anon(src) && !folio_test_ksm(src) && !anon_vma, src); + + /* + * Racy check here to avoid page table walking and modifications + * as much as possible. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto out; + try_to_migrate(src, mode == MIGRATE_ASYNC ? TTU_BATCH_FLUSH : 0); old_page_state |= PAGE_WAS_MAPPED; } @@ -1464,6 +1472,14 @@ static int unmap_and_move_huge_page(new_folio_t get_new_folio, if (folio_mapped(src)) { enum ttu_flags ttu = 0; + /* + * Racy check folio is pinned, try to avoid unnecessary page + * table unmapping and restoring, because the subsequent + * move_to_new_folio will eventually check the reference count. + */ + if (unlikely(folio_maybe_dma_pinned(src))) + goto unlock_put_anon; + if (!folio_test_anon(src)) { /* * In shared mappings, try_to_unmap could potentially -- 2.34.1

2 1

[PATCH openEuler-26.09 000/399] sched_ext
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable and disable sched_ext configs guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 3 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/configs/openeuler_defconfig | 2 + arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 225 files changed, 24757 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[PATCH OLK-6.6] arm64/mpam: Synchronize MPAM Partid to kernel mode
by Zeng Heng 17 Dec '25

17 Dec '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IDD55N -------------------------------- Currently, the MPAM implementation on Linux only applies isolation control to tasks' user-space, while resource allocation for execution in kernel mode is according to the root group's (Partid=0) policy. With MPAM adding L2 cache support, and given small L2 capacity, frequently switching partition policies between kernel and user space would cause L2 thrashing and degrade performance. Moreover, to support MPAM isolation for kernel-space processes, kernel space should adopt the same partition policy as user space. Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- arch/arm64/include/asm/mpam.h | 1 + arch/arm64/kernel/cpufeature.c | 2 +- arch/arm64/kernel/mpam.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/mpam.h b/arch/arm64/include/asm/mpam.h index 8caac70e22ed..db4d559e8936 100644 --- a/arch/arm64/include/asm/mpam.h +++ b/arch/arm64/include/asm/mpam.h @@ -161,6 +161,7 @@ static inline void mpam_thread_switch(struct task_struct *tsk) return; /* Synchronising this write is left until the ERET to EL0 */ + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); WRITE_ONCE(per_cpu(arm64_mpam_current, cpu), regval); } diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 414b9d28ecd1..4cc8691dc7d8 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2425,7 +2425,7 @@ cpu_enable_mpam(const struct arm64_cpu_capabilities *entry) * where latency sensitive tasks have to wait for a task that has * been throttled to release the lock. */ - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); } diff --git a/arch/arm64/kernel/mpam.c b/arch/arm64/kernel/mpam.c index 3f070cbab420..19d89beaad01 100644 --- a/arch/arm64/kernel/mpam.c +++ b/arch/arm64/kernel/mpam.c @@ -40,7 +40,7 @@ static int mpam_pm_notifier(struct notifier_block *self, * value has changed under our feet. */ regval = READ_ONCE(per_cpu(arm64_mpam_current, cpu)); - write_sysreg_s(0, SYS_MPAM1_EL1); + write_sysreg_s(regval, SYS_MPAM1_EL1); write_sysreg_s(regval, SYS_MPAM0_EL1); return NOTIFY_OK; -- 2.25.1

2 1

[PATCH openEuler-1.0-LTS] ppp: associate skb with a device at tx
by Wang Liang 17 Dec '25

17 Dec '25

From: Stanislav Fomichev <sdf(a)google.com> stable inclusion from stable-v4.19.270 commit c2a698ff156974908308f42cf5991ab5c0c4b8cd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBMV8 CVE: CVE-2022-50655 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 9f225444467b98579cf28d94f4ad053460dfdb84 ] Syzkaller triggered flow dissector warning with the following: r0 = openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0xc0802, 0x0) ioctl$PPPIOCNEWUNIT(r0, 0xc004743e, &(0x7f00000000c0)) ioctl$PPPIOCSACTIVE(r0, 0x40107446, &(0x7f0000000240)={0x2, &(0x7f0000000180)=[{0x20, 0x0, 0x0, 0xfffff034}, {0x6}]}) pwritev(r0, &(0x7f0000000040)=[{&(0x7f0000000140)='\x00!', 0x2}], 0x1, 0x0, 0x0) [ 9.485814] WARNING: CPU: 3 PID: 329 at net/core/flow_dissector.c:1016 __skb_flow_dissect+0x1ee0/0x1fa0 [ 9.485929] skb_get_poff+0x53/0xa0 [ 9.485937] bpf_skb_get_pay_offset+0xe/0x20 [ 9.485944] ? ppp_send_frame+0xc2/0x5b0 [ 9.485949] ? _raw_spin_unlock_irqrestore+0x40/0x60 [ 9.485958] ? __ppp_xmit_process+0x7a/0xe0 [ 9.485968] ? ppp_xmit_process+0x5b/0xb0 [ 9.485974] ? ppp_write+0x12a/0x190 [ 9.485981] ? do_iter_write+0x18e/0x2d0 [ 9.485987] ? __import_iovec+0x30/0x130 [ 9.485997] ? do_pwritev+0x1b6/0x240 [ 9.486016] ? trace_hardirqs_on+0x47/0x50 [ 9.486023] ? __x64_sys_pwritev+0x24/0x30 [ 9.486026] ? do_syscall_64+0x3d/0x80 [ 9.486031] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd Flow dissector tries to find skb net namespace either via device or via socket. Neigher is set in ppp_send_frame, so let's manually use ppp->dev. Cc: Paul Mackerras <paulus(a)samba.org> Cc: linux-ppp(a)vger.kernel.org Reported-by: syzbot+41cab52ab62ee99ed24a(a)syzkaller.appspotmail.com Signed-off-by: Stanislav Fomichev <sdf(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- drivers/net/ppp/ppp_generic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index 5cd81bdf6d89..98a84d2c71bb 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -1532,6 +1532,8 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) int len; unsigned char *cp; + skb->dev = ppp->dev; + if (proto < 0x8000) { #ifdef CONFIG_PPP_FILTER /* check if we should pass this packet */ -- 2.34.1

2 1

[openeuler:openEuler-1.0-LTS 1944/1944] lib/prime_numbers.c:8: warning: "bitmap_size" redefined
by kernel test robot 17 Dec '25

17 Dec '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 9e8111c56a2515c7634662d19c29fde636758a02 [1944/1944] bitmap: introduce generic optimized bitmap_size() config: arm64-randconfig-r052-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170947.gjTMu0Jt-lkp@…) compiler: aarch64-linux-gcc (GCC) 9.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170947.gjTMu0Jt-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170947.gjTMu0Jt-lkp@intel.com/ All warnings (new ones prefixed by >>): >> lib/prime_numbers.c:8: warning: "bitmap_size" redefined 8 | #define bitmap_size(nbits) (BITS_TO_LONGS(nbits) * sizeof(unsigned long)) | In file included from include/linux/cpumask.h:12, from include/linux/rcupdate.h:44, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from arch/arm64/include/asm/compat.h:25, from arch/arm64/include/asm/stat.h:24, from include/linux/stat.h:6, from include/linux/module.h:11, from lib/prime_numbers.c:3: include/linux/bitmap.h:215: note: this is the location of the previous definition 215 | #define bitmap_size(nbits) (ALIGN(nbits, BITS_PER_LONG) / BITS_PER_BYTE) | vim +/bitmap_size +8 lib/prime_numbers.c cf4a7207b1cb4a Chris Wilson 2016-12-22 7 cf4a7207b1cb4a Chris Wilson 2016-12-22 @8 #define bitmap_size(nbits) (BITS_TO_LONGS(nbits) * sizeof(unsigned long)) cf4a7207b1cb4a Chris Wilson 2016-12-22 9 :::::: The code at line 8 was first introduced by commit :::::: cf4a7207b1cb4a3c3fe3aa11a83c9d673722a7f5 lib: Add a simple prime number generator :::::: TO: Chris Wilson <chris(a)chris-wilson.co.uk> :::::: CC: Daniel Vetter <daniel.vetter(a)ffwll.ch> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/2] XSched: List Corruption
by Liu Kai 17 Dec '25

17 Dec '25

XSched: List Corruption Liu Kai (2): xsched: protect group member list with xcu_lock to prevent corruption xsched/cgroup: move list_del from css_free to css_offline to prevent corruption kernel/xsched/cgroup.c | 30 +++++++++++++++--------------- kernel/xsched/core.c | 7 +++---- kernel/xsched/vstream.c | 1 + 3 files changed, 19 insertions(+), 19 deletions(-) -- 2.34.1

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[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 17 Dec '25

17 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

2 400

[openeuler:openEuler-1.0-LTS 1944/1944] drivers/gpio/gpio-phytium-platform.c:111:2-3: Unneeded semicolon
by kernel test robot 17 Dec '25

17 Dec '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 00711bad7e372a30c4975ba43811ffa666aff0e1 [1944/1944] gpio: add phytium gpio driver config: arm64-randconfig-r052-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170821.DRlMQdsB-lkp@…) compiler: aarch64-linux-gcc (GCC) 9.5.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170821.DRlMQdsB-lkp@intel.com/ cocci warnings: (new ones prefixed by >>) >> drivers/gpio/gpio-phytium-platform.c:111:2-3: Unneeded semicolon vim +111 drivers/gpio/gpio-phytium-platform.c 35 36 static int phytium_gpio_probe(struct platform_device *pdev) 37 { 38 struct device *dev = &pdev->dev; 39 struct resource *res; 40 struct phytium_gpio *gpio; 41 struct gpio_irq_chip *girq; 42 struct fwnode_handle *fwnode; 43 int err, irq_count; 44 45 gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); 46 if (!gpio) 47 return -ENOMEM; 48 49 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 50 gpio->regs = devm_ioremap_resource(&pdev->dev, res); 51 if (IS_ERR(gpio->regs)) 52 return PTR_ERR(gpio->regs); 53 54 if (!device_get_child_node_count(dev)) 55 return -ENODEV; 56 57 device_for_each_child_node(dev, fwnode) { 58 int idx; 59 60 if (fwnode_property_read_u32(fwnode, "reg", &idx) || 61 idx >= MAX_NPORTS) { 62 dev_err(dev, "missing/invalid port index\n"); 63 fwnode_handle_put(fwnode); 64 return -EINVAL; 65 } 66 67 if (fwnode_property_read_u32(fwnode, "nr-gpios", 68 &gpio->ngpio[idx])) { 69 dev_info(dev, 70 "failed to get number of gpios for Port%c\n", 71 idx ? 'B' : 'A'); 72 gpio->ngpio[idx] = NGPIO_DEFAULT; 73 } 74 } 75 76 /* irq_chip support */ 77 gpio->irq_chip.name = dev_name(dev); 78 gpio->irq_chip.irq_ack = phytium_gpio_irq_ack; 79 gpio->irq_chip.irq_mask = phytium_gpio_irq_mask; 80 gpio->irq_chip.irq_unmask = phytium_gpio_irq_unmask; 81 gpio->irq_chip.irq_set_type = phytium_gpio_irq_set_type; 82 gpio->irq_chip.irq_enable = phytium_gpio_irq_enable; 83 gpio->irq_chip.irq_disable = phytium_gpio_irq_disable; 84 #ifdef CONFIG_SMP 85 gpio->irq_chip.irq_set_affinity = phytium_gpio_irq_set_affinity; 86 #endif 87 raw_spin_lock_init(&gpio->lock); 88 89 gpio->gc.base = -1; 90 gpio->gc.get_direction = phytium_gpio_get_direction; 91 gpio->gc.direction_input = phytium_gpio_direction_input; 92 gpio->gc.direction_output = phytium_gpio_direction_output; 93 gpio->gc.get = phytium_gpio_get; 94 gpio->gc.set = phytium_gpio_set; 95 gpio->gc.ngpio = gpio->ngpio[0] + gpio->ngpio[1]; 96 gpio->gc.label = dev_name(dev); 97 gpio->gc.parent = dev; 98 gpio->gc.owner = THIS_MODULE; 99 100 girq = &gpio->gc.irq; 101 girq->handler = handle_bad_irq; 102 girq->default_type = IRQ_TYPE_NONE; 103 104 for (irq_count = 0; irq_count < gpio->ngpio[0]; irq_count++) { 105 gpio->irq[irq_count] = -ENXIO; 106 gpio->irq[irq_count] = platform_get_irq(pdev, irq_count); 107 if (gpio->irq[irq_count] < 0) { 108 dev_warn(dev, "no irq is found.\n"); 109 break; 110 } > 111 }; 112 113 girq->num_parents = irq_count; 114 girq->parents = gpio->irq; 115 girq->parent_handler = phytium_gpio_irq_handler; 116 117 girq->chip = &gpio->irq_chip; 118 119 err = devm_gpiochip_add_data(dev, &gpio->gc, gpio); 120 if (err) 121 return err; 122 123 platform_set_drvdata(pdev, gpio); 124 dev_info(dev, "Phytium GPIO controller @%pa registered\n", 125 &res->start); 126 127 return 0; 128 } 129 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1944/1944] include/uapi/../../drivers/scsi/isci/isci.h:531:1: error: attempted to randomize userland API struct sci_base_state
by kernel test robot 17 Dec '25

17 Dec '25

Hi Jason, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 28617d9631dc65be773b8a28718e8614558caa5f [1944/1944] scsi: libsas: Abort all in-flight requests when device is gone config: arm64-randconfig-001-20251217 (https://download.01.org/0day-ci/archive/20251217/202512170724.x8psWT4W-lkp@…) compiler: aarch64-linux-gcc (GCC) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170724.x8psWT4W-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170724.x8psWT4W-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/uapi/../../drivers/scsi/isci/remote_node_context.h:67:0, from include/uapi/../../drivers/scsi/isci/remote_device.h:61, from drivers/scsi/libsas/sas_discover.c:36: >> include/uapi/../../drivers/scsi/isci/isci.h:531:1: error: attempted to randomize userland API struct sci_base_state }; ^ vim +531 include/uapi/../../drivers/scsi/isci/isci.h 12ef65444de9d3 Edmund Nadolski 2011-06-02 527 12ef65444de9d3 Edmund Nadolski 2011-06-02 528 struct sci_base_state { 12ef65444de9d3 Edmund Nadolski 2011-06-02 529 sci_state_transition_t enter_state; /* Called on state entry */ 12ef65444de9d3 Edmund Nadolski 2011-06-02 530 sci_state_transition_t exit_state; /* Called on state exit */ 12ef65444de9d3 Edmund Nadolski 2011-06-02 @531 }; 12ef65444de9d3 Edmund Nadolski 2011-06-02 532 :::::: The code at line 531 was first introduced by commit :::::: 12ef65444de9d387a383b9991960848bed5bbe74 isci: additional state machine cleanup :::::: TO: Edmund Nadolski <edmund.nadolski(a)intel.com> :::::: CC: Dan Williams <dan.j.williams(a)intel.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1943/1943] lib/idr.o: warning: objtool: missing symbol for section .text
by kernel test robot 17 Dec '25

17 Dec '25

Hi Xia, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: eaab6483a9cc9c59427c23d4b45c9990d2888f78 [1943/1943] ida: don't use BUG_ON() for debugging config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251217/202512170545.AQrGseNI-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170545.AQrGseNI-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170545.AQrGseNI-lkp@intel.com/ All warnings (new ones prefixed by >>): >> lib/idr.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:openEuler-1.0-LTS 1943/1943] arch/x86/mm/maccess.o: warning: objtool: missing symbol for section .text
by kernel test robot 17 Dec '25

17 Dec '25

Hi Daniel, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 22058d2bdaf6b0526395ceec2736c72c3b5f435a [1943/1943] uaccess: Add strict non-pagefault kernel-space read function config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251217/202512170330.xeDXc5AM-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512170330.xeDXc5AM-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512170330.xeDXc5AM-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/mm/maccess.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 0/4] test
by Zicheng Qu 16 Dec '25

16 Dec '25

Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Zicheng Qu (2): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info include/linux/trace_events.h | 6 ++++-- include/uapi/linux/bpf.h | 15 +++++++++++++++ kernel/bpf/syscall.c | 18 ++++++++++++------ kernel/trace/bpf_trace.c | 5 +++-- kernel/trace/trace_kprobe.c | 14 +++++++++++--- tools/include/uapi/linux/bpf.h | 7 +++++++ 6 files changed, 52 insertions(+), 13 deletions(-) -- 2.34.1

2 5

[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 16 Dec '25

16 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- 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.../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + 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.../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[openeuler:openEuler-1.0-LTS 1943/1943] arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition
by kernel test robot 16 Dec '25

16 Dec '25

Hi LeoLiu-oc, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 49bc452fdcb1e9ec3f9bb20cd3e15b865a2933fd commit: 0ce7c3b6e8a986ee9ef92a07ae18964835446c07 [1943/1943] x86/perf: Add hardware performance events support for Zhaoxin CPU. config: x86_64-randconfig-005-20251216 (https://download.01.org/0day-ci/archive/20251216/202512161945.q1Ihd2Pk-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251216/202512161945.q1Ihd2Pk-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512161945.q1Ihd2Pk-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:2: In file included from include/linux/compiler_types.h:59: include/linux/compiler-clang.h:20:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 20 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:354:9: note: previous definition is here 354 | #define __SANITIZE_ADDRESS__ 1 | ^ >> arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition [-Wignored-attributes] 505 | __init int zhaoxin_pmu_init(void) | ^ include/linux/init.h:50:17: note: expanded from macro '__init' 50 | #define __init __section(.init.text) __cold __latent_entropy __noinitretpoline | ^ include/linux/compiler_types.h:222:38: note: expanded from macro '__section' 222 | #define __section(S) __attribute__((__section__(#S))) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ >> arch/x86/events/zhaoxin/core.c:505:1: warning: attribute declaration must precede definition [-Wignored-attributes] 505 | __init int zhaoxin_pmu_init(void) | ^ include/linux/init.h:50:39: note: expanded from macro '__init' 50 | #define __init __section(.init.text) __cold __latent_entropy __noinitretpoline | ^ include/linux/compiler_types.h:221:33: note: expanded from macro '__cold' 221 | #define __cold __attribute__((cold)) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ arch/x86/events/zhaoxin/core.c:505:12: error: redefinition of 'zhaoxin_pmu_init' 505 | __init int zhaoxin_pmu_init(void) | ^ arch/x86/events/zhaoxin/../perf_event.h:1054:19: note: previous definition is here 1054 | static inline int zhaoxin_pmu_init(void) | ^ 3 warnings and 1 error generated. vim +505 arch/x86/events/zhaoxin/core.c 504 > 505 __init int zhaoxin_pmu_init(void) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 0/4] test
by Zicheng Qu 16 Dec '25

16 Dec '25

Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Zicheng Qu (2): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info include/linux/trace_events.h | 6 ++++-- include/uapi/linux/bpf.h | 15 +++++++++++++++ kernel/bpf/syscall.c | 18 ++++++++++++------ kernel/trace/bpf_trace.c | 5 +++-- kernel/trace/trace_kprobe.c | 14 +++++++++++--- tools/include/uapi/linux/bpf.h | 7 +++++++ 6 files changed, 52 insertions(+), 13 deletions(-) -- 2.34.1

1 4

[PATCH openEuler-1.0-LTS] ip6_vti: fix slab-use-after-free in decode_session6
by Wang Liang 16 Dec '25

16 Dec '25

From: Zhengchao Shao <shaozhengchao(a)huawei.com> stable inclusion from stable-v4.19.293 commit fa6c6c04f6c9b21b315023f487e5a07ae7fcf647 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBOS5 CVE: CVE-2023-53821 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 9fd41f1ba638938c9a1195d09bc6fa3be2712f25 ] When ipv6_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ipv6_vti device sends IPv6 packets. The stack information is as follows: BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890 Read of size 1 at addr ffff88802e08edc2 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-next-20230707-00001-g84e2cad7f979 #410 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: <IRQ> dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11d/0x130 decode_session6+0x103f/0x1890 __xfrm_decode_session+0x54/0xb0 vti6_tnl_xmit+0x3e6/0x1ee0 dev_hard_start_xmit+0x187/0x700 sch_direct_xmit+0x1a3/0xc30 __qdisc_run+0x510/0x17a0 __dev_queue_xmit+0x2215/0x3b10 neigh_connected_output+0x3c2/0x550 ip6_finish_output2+0x55a/0x1550 ip6_finish_output+0x6b9/0x1270 ip6_output+0x1f1/0x540 ndisc_send_skb+0xa63/0x1890 ndisc_send_rs+0x132/0x6f0 addrconf_rs_timer+0x3f1/0x870 call_timer_fn+0x1a0/0x580 expire_timers+0x29b/0x4b0 run_timer_softirq+0x326/0x910 __do_softirq+0x1d4/0x905 irq_exit_rcu+0xb7/0x120 sysvec_apic_timer_interrupt+0x97/0xc0 </IRQ> Allocated by task 9176: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x7f/0x90 kmem_cache_alloc_node+0x1cd/0x410 kmalloc_reserve+0x165/0x270 __alloc_skb+0x129/0x330 netlink_sendmsg+0x9b1/0xe30 sock_sendmsg+0xde/0x190 ____sys_sendmsg+0x739/0x920 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1c0 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 9176: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x40 ____kasan_slab_free+0x160/0x1c0 slab_free_freelist_hook+0x11b/0x220 kmem_cache_free+0xf0/0x490 skb_free_head+0x17f/0x1b0 skb_release_data+0x59c/0x850 consume_skb+0xd2/0x170 netlink_unicast+0x54f/0x7f0 netlink_sendmsg+0x926/0xe30 sock_sendmsg+0xde/0x190 ____sys_sendmsg+0x739/0x920 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1c0 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88802e08ed00 which belongs to the cache skbuff_small_head of size 640 The buggy address is located 194 bytes inside of freed 640-byte region [ffff88802e08ed00, ffff88802e08ef80) As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets. Fixes: f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> Signed-off-by: Steffen Klassert <steffen.klassert(a)secunet.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- net/ipv6/ip6_vti.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 866ce815625e..a64050e77588 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -562,12 +562,12 @@ vti6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) vti6_addr_conflict(t, ipv6_hdr(skb))) goto tx_err; - xfrm_decode_session(skb, &fl, AF_INET6); memset(IP6CB(skb), 0, sizeof(*IP6CB(skb))); + xfrm_decode_session(skb, &fl, AF_INET6); break; case htons(ETH_P_IP): - xfrm_decode_session(skb, &fl, AF_INET); memset(IPCB(skb), 0, sizeof(*IPCB(skb))); + xfrm_decode_session(skb, &fl, AF_INET); break; default: goto tx_err; -- 2.34.1

2 1

[openeuler:openEuler-1.0-LTS 1941/1941] sound/soc/codecs/simple-amplifier.o: warning: objtool: missing symbol for section .init.text
by kernel test robot 16 Dec '25

16 Dec '25

Hi Mark, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 05226913813ed71f46a7f726a6c73813d8d0b0d7 commit: 4aa5db22d35588e1a5d2ee88472348ea73d9fb23 [1941/1941] Merge branch 'asoc-4.19' into asoc-next config: x86_64-buildonly-randconfig-006-20251212 (https://download.01.org/0day-ci/archive/20251216/202512161723.lgbkIZyg-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251216/202512161723.lgbkIZyg-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512161723.lgbkIZyg-lkp@intel.com/ All warnings (new ones prefixed by >>): >> sound/soc/codecs/simple-amplifier.o: warning: objtool: missing symbol for section .init.text -- sound/soc/codecs/es7241.c:206:33: warning: unused variable 'es7241_chip' [-Wunused-const-variable] 206 | static const struct es7241_chip es7241_chip = { | ^~~~~~~~~~~ 1 warning generated. >> sound/soc/codecs/es7241.o: warning: objtool: missing symbol for section .init.text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-26.09 000/399] sched_ext patch
by Zicheng Qu 16 Dec '25

16 Dec '25

Aboorva Devarajan (2): sched_ext: Documentation: Remove mentions of scx_bpf_switch_all sched: Pass correct scheduling policy to __setscheduler_class Alexander Lobakin (1): bitops: make BYTES_TO_BITS() treewide-available Alexei Starovoitov (1): selftests/bpf: modify test_loader that didn't support running bpf_prog_type_syscall programs Andrea Righi (32): sched_ext: fix typo in set_weight() description sched_ext: add CONFIG_DEBUG_INFO_BTF dependency sched_ext: Provide a sysfs enable_seq counter sched_ext: improve WAKE_SYNC behavior for default idle CPU selection sched_ext: Clarify ops.select_cpu() for single-CPU tasks sched_ext: Introduce LLC awareness to the default idle selection policy sched_ext: Introduce NUMA awareness to the default idle selection policy sched_ext: Do not enable LLC/NUMA optimizations when domains overlap sched_ext: Fix incorrect use of bitwise AND MAINTAINERS: add self as reviewer for sched_ext sched_ext: idle: Refresh idle masks during idle-to-idle transitions sched_ext: Use the NUMA scheduling domain for NUMA optimizations sched_ext: idle: use assign_cpu() to update the idle cpumask sched_ext: idle: clarify comments sched_ext: idle: introduce check_builtin_idle_enabled() helper sched_ext: idle: small CPU iteration refactoring sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON sched_ext: Include remaining task time slice in error state dump sched_ext: Include task weight in the error state dump selftests/sched_ext: Fix enum resolution tools/sched_ext: Add helper to check task migration state sched_ext: selftests/dsp_local_on: Fix selftest on UP systems sched_ext: Fix lock imbalance in dispatch_to_local_dsq() selftests/sched_ext: Fix exit selftest hang on UP sched_ext: Move built-in idle CPU selection policy to a separate file sched_ext: Track currently locked rq sched_ext: Make scx_locked_rq() inline sched_ext: Fix missing rq lock in scx_bpf_cpuperf_set() sched/ext: Fix invalid task state transitions on class switch sched_ext: Make scx_kf_allowed_if_unlocked() available outside ext.c sched_ext: Remove duplicate BTF_ID_FLAGS definitions sched_ext: Fix rq lock state in hotplug ops Andrii Nakryiko (7): bpf: extract iterator argument type and name validation logic bpf: allow passing struct bpf_iter_<type> as kfunc arguments selftests/bpf: test passing iterator to a kfunc bpf: Emit global subprog name in verifier logs bpf: Validate global subprogs lazily selftests/bpf: Add lazy global subprog validation tests selftests/bpf: validate eliminated global subprog is not freplaceable Arnaldo Carvalho de Melo (1): tools include UAPI: Sync linux/sched.h copy with the kernel sources Atul Kumar Pant (1): sched_ext: Fixes typos in comments Benjamin Tissoires (1): bpf: introduce in_sleepable() helper Bitao Hu (4): genirq: Convert kstat_irqs to a struct genirq: Provide a snapshot mechanism for interrupt statistics watchdog/softlockup: Low-overhead detection of interrupt storm watchdog/softlockup: Report the most frequent interrupts Björn Töpel (1): selftests: sched_ext: Add sched_ext as proper selftest target Breno Leitao (3): rhashtable: Fix potential deadlock by moving schedule_work outside lock sched_ext: Use kvzalloc for large exit_dump allocation sched/ext: Prevent update_locked_rq() calls with NULL rq Changwoo Min (11): sched_ext: Clarify sched_ext_ops table for userland scheduler sched_ext: add a missing rcu_read_lock/unlock pair at scx_select_cpu_dfl() MAINTAINERS: add me as reviewer for sched_ext sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() sched_ext: Relocate scx_enabled() related code sched_ext: Implement scx_bpf_now() sched_ext: Add scx_bpf_now() for BPF scheduler sched_ext: Add time helpers for BPF schedulers sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now() sched_ext: Use time helpers in BPF schedulers sched_ext: Fix incorrect time delta calculation in time_delta() Christian Brauner (1): file: add take_fd() cleanup helper Christian Loehle (1): sched/fair: Remove stale FREQUENCY_UTIL comment Chuyi Zhou (15): cgroup: Prepare for using css_task_iter_*() in BPF bpf: Introduce css_task open-coded iterator kfuncs bpf: Introduce task open coded iterator kfuncs bpf: Introduce css open-coded iterator kfuncs bpf: teach the verifier to enforce css_iter and task_iter in RCU CS bpf: Let bpf_iter_task_new accept null task ptr selftests/bpf: rename bpf_iter_task.c to bpf_iter_tasks.c selftests/bpf: Add tests for open-coded task and css iter bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg bpf: Relax allowlist for css_task iter selftests/bpf: Add tests for css_task iter combining with cgroup iter selftests/bpf: Add test for using css_task iter in sleepable progs selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly sched_ext: Fix the incorrect bpf_list kfunc API in common.bpf.h. sched_ext: Use SCX_CALL_OP_TASK in task_tick_scx Colin Ian King (1): sched_ext: Fix spelling mistake: "intead" -> "instead" Daniel Xu (3): bpf: btf: Support flags for BTF_SET8 sets bpf: btf: Add BTF_KFUNCS_START/END macro pair bpf: treewide: Annotate BPF kfuncs in BTF Dave Marchevsky (5): bpf: Don't explicitly emit BTF for struct btf_iter_num selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Add tests for open-coded task_vma iter bpf: Add __bpf_kfunc_{start,end}_defs macros David Vernet (15): bpf: Add ability to pin bpf timer to calling CPU selftests/bpf: Test pinning bpf timer to a core sched_ext: Implement runnable task stall watchdog sched_ext: Print sched_ext info when dumping stack sched_ext: Implement SCX_KICK_WAIT sched_ext: Implement sched_ext_ops.cpu_acquire/release() sched_ext: Add selftests bpf: Load vmlinux btf for any struct_ops map sched_ext: Make scx_bpf_cpuperf_set() @cpu arg signed scx: Allow calling sleepable kfuncs from BPF_PROG_TYPE_SYSCALL scx/selftests: Verify we can call create_dsq from prog_run sched_ext: Remove unnecessary cpu_relax() scx: Fix exit selftest to use custom DSQ scx: Fix raciness in scx_ops_bypass() scx: Fix maximal BPF selftest prog Dawei Li (1): genirq: Deduplicate interrupt descriptor initialization Devaansh Kumar (1): sched_ext: selftests: Fix grammar in tests description Devaansh-Kumar (1): sched_ext: Documentation: Update instructions for running example schedulers Geliang Tang (1): bpf, btf: Check btf for register_bpf_struct_ops Henry Huang (2): sched_ext: initialize kit->cursor.flags sched_ext: keep running prev when prev->scx.slice != 0 Herbert Xu (1): rhashtable: Fix rhashtable_try_insert test Honglei Wang (3): sched_ext: use correct function name in pick_task_scx() warning message sched_ext: Add __weak to fix the build errors sched_ext: switch class when preempted by higher priority scheduler Hongyan Xia (1): sched/ext: Add BPF function to fetch rq Hou Tao (7): bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: Add bpf_mem_alloc_check_size() helper bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Use __u64 to save the bits in bits iterator selftests/bpf: Add three test cases for bits_iter selftests/bpf: Use -4095 as the bad address for bits iterator selftests/bpf: Export map_update_retriable() Ihor Solodrai (2): selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ selftests/sched_ext: fix build after renames in sched_ext API Ilpo Järvinen (1): <linux/cleanup.h>: Allow the passing of both iomem and non-iomem pointers to no_free_ptr() Ingo Molnar (3): sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c sched/fair: Rename check_preempt_wakeup() to check_preempt_wakeup_fair() sched/fair: Rename check_preempt_curr() to wakeup_preempt() Jake Hillion (1): sched_ext: create_dsq: Return -EEXIST on duplicate request Jiapeng Chong (1): sched_ext: Fixes incorrect type in bpf_scx_init() Jiayuan Chen (1): selftests/bpf: Fixes for test_maps test Jiri Olsa (2): bpf: Add missed value to kprobe perf link info bpf: Add cookie to perf_event bpf_link_info records Kui-Feng Lee (28): bpf: refactory struct_ops type initialization to a function. bpf: get type information with BTF_ID_LIST bpf, net: introduce bpf_struct_ops_desc. bpf: add struct_ops_tab to btf. bpf: make struct_ops_map support btfs other than btf_vmlinux. bpf: pass btf object id in bpf_map_info. bpf: lookup struct_ops types from a given module BTF. bpf: pass attached BTF to the bpf_struct_ops subsystem bpf: hold module refcnt in bpf_struct_ops map creation and prog verification. bpf: validate value_type bpf, net: switch to dynamic registration libbpf: Find correct module BTFs for struct_ops maps and progs. bpf: export btf_ctx_access to modules. selftests/bpf: test case for register_bpf_struct_ops(). bpf: Fix error checks against bpf_get_btf_vmlinux(). bpf: Move __kfunc_param_match_suffix() to btf.c. bpf: Remove an unnecessary check. bpf: add btf pointer to struct bpf_ctx_arg_aux. bpf: Create argument information for nullable arguments. selftests/bpf: Suppress warning message of an unused variable. selftests/bpf: Test PTR_MAYBE_NULL arguments of struct_ops operators. libbpf: Set btf_value_type_id of struct bpf_map for struct_ops. libbpf: Convert st_ops->data to shadow type. bpftool: Generated shadow variables for struct_ops maps. bpftool: Add an example for struct_ops map and shadow type. selftests/bpf: Test if shadow types work correctly. bpf, net: validate struct_ops when updating value. bpf: struct_ops supports more than one page for trampolines. Kumar Kartikeya Dwivedi (4): bpf: Allow calling static subprogs while holding a bpf_spin_lock selftests/bpf: Add test for static subprog call in lock cs bpf: Transfer RCU lock state between subprog calls selftests/bpf: Add tests for RCU lock transfer between subprogs Liang Jie (1): sched_ext: Use sizeof_field for key_len in dsq_hash_params Manu Bretelle (1): sched_ext: define missing cfi stubs for sched_ext Martin KaFai Lau (3): libbpf: Ensure undefined bpf_attr field stays 0 bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing bpf: Use kallsyms to find the function name of a struct_ops's stub function Matthieu Baerts (1): bpf: fix compilation error without CGROUPS Peter Zijlstra (20): cleanup: Make no_free_ptr() __must_check sched: Simplify set_user_nice() sched: Simplify syscalls sched: Simplify sched_{set,get}affinity() sched: Simplify yield_to() sched: Simplify sched_rr_get_interval() sched: Simplify sched_move_task() sched: Misc cleanups sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity sched: Allow sched_class::dequeue_task() to fail sched: Unify runtime accounting across classes sched: Use set_next_task(.first) where required sched/fair: Cleanup pick_task_fair() vs throttle sched/fair: Cleanup pick_task_fair()'s curr sched/fair: Unify pick_{,next_}_task_fair() sched: Fixup set_next_task() implementations sched: Split up put_prev_task_balance() sched: Rework pick_next_task() sched: Combine the last put_prev_task() and the first set_next_task() sched: Add put_prev_task(.next) Pu Lehui (1): riscv, bpf: Fix out-of-bounds issue when preparing trampoline image Randy Dunlap (1): sched_ext: fix kernel-doc warnings Shizhao Chen (1): sched_ext: Add option -l in selftest runner to list all available tests Song Liu (8): bpf: Charge modmem for struct_ops trampoline bpf: Let bpf_prog_pack_free handle any pointer bpf: Adjust argument names of arch_prepare_bpf_trampoline() bpf: Add helpers for trampoline image management bpf, x86: Adjust arch_prepare_bpf_trampoline return value bpf: Add arch_bpf_trampoline_size() bpf: Use arch_bpf_trampoline_size x86, bpf: Use bpf_prog_pack for bpf trampoline T.J. Mercier (1): bpf, docs: Fix broken link to renamed bpf_iter_task_vmas.c Tejun Heo (148): sched: Restructure sched_class order sanity checks in sched_init() sched: Allow sched_cgroup_fork() to fail and introduce sched_cancel_fork() sched: Add sched_class->reweight_task() sched: Add sched_class->switching_to() and expose check_class_changing/changed() sched: Factor out cgroup weight conversion functions sched: Factor out update_other_load_avgs() from __update_blocked_others() sched: Add normal_policy() sched_ext: Add boilerplate for extensible scheduler class sched_ext: Implement BPF extensible scheduler class sched_ext: Add scx_simple and scx_example_qmap example schedulers sched_ext: Add sysrq-S which disables the BPF scheduler sched_ext: Allow BPF schedulers to disallow specific tasks from joining SCHED_EXT sched_ext: Print debug dump after an error exit tools/sched_ext: Add scx_show_state.py sched_ext: Implement scx_bpf_kick_cpu() and task preemption support sched_ext: Add a central scheduler which makes all scheduling decisions on one CPU sched_ext: Make watchdog handle ops.dispatch() looping stall sched_ext: Add task state tracking operations sched_ext: Implement tickless support sched_ext: Track tasks that are subjects of the in-flight SCX operation sched_ext: Implement sched_ext_ops.cpu_online/offline() sched_ext: Bypass BPF scheduler while PM events are in progress sched_ext: Implement core-sched support sched_ext: Add vtime-ordered priority queue to dispatch_q's sched_ext: Documentation: scheduler: Document extensible scheduler class sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch_class() cpufreq_schedutil: Refactor sugov_cpu_is_busy() sched_ext: Add cpuperf support sched_ext: Drop tools_clean target from the top-level Makefile sched_ext: Swap argument positions in kcalloc() call to avoid compiler warning sched, sched_ext: Simplify dl_prio() case handling in sched_fork() sched_ext: Account for idle policy when setting p->scx.weight in scx_ops_enable_task() sched_ext: Disallow loading BPF scheduler if isolcpus= domain isolation is in effect sched_ext: Minor cleanups in kernel/sched/ext.h sched, sched_ext: Open code for_balance_class_range() sched, sched_ext: Move some declarations from kernel/sched/ext.h to sched.h sched_ext: Take out ->priq and ->flags from scx_dsq_node sched_ext: Implement DSQ iterator sched_ext/scx_qmap: Add an example usage of DSQ iterator sched_ext: Reimplement scx_bpf_reenqueue_local() sched_ext: Make scx_bpf_reenqueue_local() skip tasks that are being migrated sched: Move struct balance_callback definition upward sched_ext: Unpin and repin rq lock from balance_scx() sched_ext: s/SCX_RQ_BALANCING/SCX_RQ_IN_BALANCE/ and add SCX_RQ_IN_WAKEUP sched_ext: Allow SCX_DSQ_LOCAL_ON for direct dispatches sched_ext/scx_qmap: Pick idle CPU for direct dispatch on !wakeup enqueues sched_ext: Build fix on !CONFIG_STACKTRACE[_SUPPORT] sched_ext: Allow p->scx.disallow only while loading sched_ext: Simplify scx_can_stop_tick() invocation in sched_can_stop_tick() sched_ext: Add scx_enabled() test to @start_class promotion in put_prev_task_balance() sched_ext: Use update_curr_common() in update_curr_scx() sched_ext: Simplify UP support by enabling sched_class->balance() in UP sched_ext: Improve comment on idle_sched_class exception in scx_task_iter_next_locked() sched_ext: Make task_can_run_on_remote_rq() use common task_allowed_on_cpu() sched_ext: Fix unsafe list iteration in process_ddsp_deferred_locals() sched_ext: Make scx_rq_online() also test cpu_active() in addition to SCX_RQ_ONLINE sched_ext: Improve logging around enable/disable sched_ext: Don't use double locking to migrate tasks across CPUs scx_central: Fix smatch checker warning sched_ext: Add missing cfi stub for ops.tick sched_ext: Use task_can_run_on_remote_rq() test in dispatch_to_local_dsq() sched_ext: Use sched_clock_cpu() instead of rq_clock_task() in touch_core_sched() sched_ext: Don't call put_prev_task_scx() before picking the next task sched_ext: Replace SCX_TASK_BAL_KEEP with SCX_RQ_BAL_KEEP sched_ext: Unify regular and core-sched pick task paths sched_ext: Relocate functions in kernel/sched/ext.c sched_ext: Remove switch_class_scx() sched_ext: Remove sched_class->switch_class() sched_ext: TASK_DEAD tasks must be switched out of SCX on ops_disable sched_ext: TASK_DEAD tasks must be switched into SCX on ops_enable sched: Expose css_tg() sched: Make cpu_shares_read_u64() use tg_weight() sched: Introduce CONFIG_GROUP_SCHED_WEIGHT sched_ext: Add cgroup support sched_ext: Add a cgroup scheduler which uses flattened hierarchy sched_ext: Temporarily work around pick_task_scx() being called without balance_scx() sched_ext: Add missing static to scx_has_op[] sched_ext: Add missing static to scx_dump_data sched_ext: Rename scx_kfunc_set_sleepable to unlocked and relocate sched_ext: Refactor consume_remote_task() sched_ext: Make find_dsq_for_dispatch() handle SCX_DSQ_LOCAL_ON sched_ext: Fix processs_ddsp_deferred_locals() by unifying DTL_INVALID handling sched_ext: Restructure dispatch_to_local_dsq() sched_ext: Reorder args for consume_local/remote_task() sched_ext: Move sanity check and dsq_mod_nr() into task_unlink_from_dsq() sched_ext: Move consume_local_task() upward sched_ext: Replace consume_local_task() with move_local_task_to_local_dsq() sched_ext: Compact struct bpf_iter_scx_dsq_kern sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq() scx_qmap: Implement highpri boosting sched_ext: Synchronize bypass state changes with rq lock sched_ext: Don't trigger ops.quiescent/runnable() on migrations sched_ext: Fix build when !CONFIG_STACKTRACE sched_ext: Build fix for !CONFIG_SMP sched_ext: Add __COMPAT helpers for features added during v6.12 devel cycle tools/sched_ext: Receive misc updates from SCX repo scx_flatcg: Use a user DSQ for fallback instead of SCX_DSQ_GLOBAL sched_ext: Allow only user DSQs for scx_bpf_consume(), scx_bpf_dsq_nr_queued() and bpf_iter_scx_dsq_new() sched_ext: Relocate find_user_dsq() sched_ext: Split the global DSQ per NUMA node sched_ext: Use shorter slice while bypassing sched_ext: Relocate check_hotplug_seq() call in scx_ops_enable() sched_ext: Remove SCX_OPS_PREPPING sched_ext: Initialize in bypass mode sched_ext: Fix SCX_TASK_INIT -> SCX_TASK_READY transitions in scx_ops_enable() sched_ext: Enable scx_ops_init_task() separately sched_ext: Add scx_cgroup_enabled to gate cgroup operations and fix scx_tg_online() sched_ext: Decouple locks in scx_ops_disable_workfn() sched_ext: Decouple locks in scx_ops_enable() sched_ext: Improve error reporting during loading sched_ext: scx_cgroup_exit() may be called without successful scx_cgroup_init() sched/core: Make select_task_rq() take the pointer to wake_flags instead of value sched/core: Add ENQUEUE_RQ_SELECTED to indicate whether ->select_task_rq() was called sched_ext, scx_qmap: Add and use SCX_ENQ_CPU_SELECTED Revert "sched_ext: Use shorter slice while bypassing" sched_ext: Start schedulers with consistent p->scx.slice values sched_ext: Move scx_buildin_idle_enabled check to scx_bpf_select_cpu_dfl() sched_ext: bypass mode shouldn't depend on ops.select_cpu() sched_ext: Move scx_tasks_lock handling into scx_task_iter helpers sched_ext: Don't hold scx_tasks_lock for too long sched_ext: Make cast_mask() inline sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Add a missing newline at the end of an error message sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx() sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST sched_ext: Factor out move_task_between_dsqs() from scx_dispatch_from_dsq() sched_ext: Rename CFI stubs to names that are recognized by BPF sched_ext: Replace set_arg_maybe_null() with __nullable CFI stub tags sched_ext: Avoid live-locking bypass mode switching sched_ext: Enable the ops breather and eject BPF scheduler on softlockup sched_ext: scx_bpf_dispatch_from_dsq_set_*() are allowed from unlocked context sched_ext: Rename scx_bpf_dispatch[_vtime]() to scx_bpf_dsq_insert[_vtime]() sched_ext: Rename scx_bpf_consume() to scx_bpf_dsq_move_to_local() sched_ext: Rename scx_bpf_dispatch[_vtime]_from_dsq*() -> scx_bpf_dsq_move[_vtime]*() sched_ext: Fix invalid irq restore in scx_ops_bypass() sched_ext: Fix dsq_local_on selftest tools/sched_ext: Receive updates from SCX repo sched_ext: selftests/dsp_local_on: Fix sporadic failures sched_ext: Fix incorrect autogroup migration detection sched_ext: Implement auto local dispatching of migration disabled tasks sched_ext: Fix migration disabled handling in targeted dispatches sched_ext: Fix incorrect assumption about migration disabled tasks in task_can_run_on_remote_rq() sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance() sched_ext: Implement SCX_OPS_ALLOW_QUEUED_WAKEUP sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator sched_ext: Make scx_group_set_weight() always update tg->scx.weight sched_ext, sched/core: Don't call scx_group_set_weight() prematurely from sched_create_group() Thomas Gleixner (1): sched/ext: Remove sched_fork() hack Thorsten Blum (1): sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology() Tianchen Ding (1): sched_ext: Use btf_ids to resolve task_struct Vincent Guittot (3): sched/cpufreq: Rework schedutil governor performance estimation sched/fair: Fix frequency selection for non-invariant case sched/fair: Fix sched_can_stop_tick() for fair tasks Vishal Chourasia (2): sched_ext: Add __weak markers to BPF helper function decalarations sched_ext: Fix function pointer type mismatches in BPF selftests Wenyu Huang (1): sched/doc: Update documentation after renames and synchronize Chinese version Yafang Shao (2): bpf: Add bits iterator selftests/bpf: Add selftest for bits iter Yipeng Zou (1): sched_ext: Allow dequeue_task_scx to fail Yiwei Lin (1): sched/fair: Remove unused 'curr' argument from pick_next_entity() Yu Liao (2): sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT sched: Add dummy version of sched_group_set_idle() Yury Norov (1): cpumask: introduce assign_cpu() macro Zhang Qiao (3): sched_ext: Remove redundant p->nr_cpus_allowed checker sched/ext: Fix unmatch trailing comment of CONFIG_EXT_GROUP_SCHED sched/ext: Use tg_cgroup() to elieminate duplicate code Zhao Mengmeng (1): sched_ext: Replace scx_next_task_picked() with switch_class() in comment Zicheng Qu (25): bpf: Fix kabi for missed in bpf_link_info bpf: Fix kabi for cookie in bpf_link_info bpf: Fix kabi for value_type_btf_obj_fd in union bpf_attr bpf: Fix kabi for struct bpf_verifier_env selftest/bpf: Fix task_vma iter verification error bpf: Fix kabi for btf in struct bpf_ctx_arg_aux bpf: Fix kabi for called and verified in struct bpf_func_info_aux sched: Fix kabi for reweight_task in struct sched_class sched/syscalls: Fix kabi for EXPORT_SYMBOL moved from core.c to syscalls.c sched: Fix kabi for switching_to in struct sched_class sched/fair: Fix kabi for check_preempt_curr and wakeup_preempt in struct sched_class sched: Fix kabi for dequeue_task in struct sched_class sched_ext: Fix kabi for scx in struct task_struct sched_ext: Fix kabi for switch_class in struct sched_class sched: Fix kabi for exec_max in struct sched_statistics sched_ext: Fix kabi for balance in struct sched_class sched_ext: Fix kabi for header in kernel/sched/sched.h sched: Fix kabi pick_task in struct sched_class sched: Fix kabi for put_prev_task in struct sched_class sched_ext: Fix kabi for scx_flags and scx_weight in struct task_group sched: Fix kabi for int idle in struct task_group sched: Add __setscheduler_class() for sched_ext genirq: Fix kabi for kstat_irqs in struct irq_desc bpf: Fix kabi for size in struct bpf_tramp_image sched_ext: Enable sched_ext configs on arm64 guanjing (1): sched_ext: fix application of sizeof to pointer Documentation/bpf/bpf_iterators.rst | 2 +- Documentation/bpf/kfuncs.rst | 14 +- Documentation/scheduler/index.rst | 1 + Documentation/scheduler/sched-design-CFS.rst | 8 +- Documentation/scheduler/sched-ext.rst | 325 + .../zh_CN/scheduler/sched-design-CFS.rst | 8 +- MAINTAINERS | 14 + arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/net/bpf_jit_comp.c | 55 +- arch/mips/dec/setup.c | 2 +- arch/parisc/kernel/smp.c | 2 +- arch/powerpc/kvm/book3s_hv_rm_xics.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 43 +- arch/s390/net/bpf_jit_comp.c | 56 +- arch/x86/net/bpf_jit_comp.c | 130 +- drivers/hid/bpf/hid_bpf_dispatch.c | 8 +- drivers/tty/sysrq.c | 1 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/bitops.h | 2 + include/linux/bpf.h | 101 +- include/linux/bpf_mem_alloc.h | 3 + include/linux/bpf_verifier.h | 22 +- include/linux/btf.h | 39 + include/linux/btf_ids.h | 21 +- include/linux/cgroup.h | 14 +- include/linux/cleanup.h | 42 +- include/linux/cpumask.h | 41 +- include/linux/energy_model.h | 1 - include/linux/file.h | 20 + include/linux/filter.h | 2 +- include/linux/irqdesc.h | 17 +- include/linux/kernel_stat.h | 8 + include/linux/sched.h | 8 +- include/linux/sched/ext.h | 216 + include/linux/sched/task.h | 8 +- include/linux/trace_events.h | 6 +- include/trace/events/sched_ext.h | 32 + include/uapi/linux/bpf.h | 32 +- include/uapi/linux/sched.h | 1 + init/Kconfig | 10 + init/init_task.c | 12 + kernel/Kconfig.preempt | 27 +- kernel/bpf/bpf_iter.c | 8 +- kernel/bpf/bpf_struct_ops.c | 730 +- kernel/bpf/bpf_struct_ops_types.h | 12 - kernel/bpf/btf.c | 254 +- kernel/bpf/cgroup_iter.c | 65 +- kernel/bpf/core.c | 21 +- kernel/bpf/cpumask.c | 10 +- kernel/bpf/dispatcher.c | 7 +- kernel/bpf/helpers.c | 186 +- kernel/bpf/map_iter.c | 10 +- kernel/bpf/memalloc.c | 14 +- kernel/bpf/syscall.c | 22 +- kernel/bpf/task_iter.c | 242 +- kernel/bpf/trampoline.c | 101 +- kernel/bpf/verifier.c | 309 +- kernel/cgroup/cgroup.c | 18 +- kernel/cgroup/rstat.c | 4 +- kernel/fork.c | 17 +- kernel/irq/Kconfig | 4 + kernel/irq/internals.h | 2 +- kernel/irq/irqdesc.c | 144 +- kernel/irq/proc.c | 5 +- kernel/sched/autogroup.c | 4 +- kernel/sched/build_policy.c | 13 + kernel/sched/core.c | 2492 +----- kernel/sched/cpufreq_schedutil.c | 89 +- kernel/sched/deadline.c | 175 +- kernel/sched/debug.c | 3 + kernel/sched/ext.c | 7242 +++++++++++++++++ kernel/sched/ext.h | 119 + kernel/sched/ext_idle.c | 752 ++ kernel/sched/ext_idle.h | 39 + kernel/sched/fair.c | 306 +- kernel/sched/idle.c | 31 +- kernel/sched/rt.c | 40 +- kernel/sched/sched.h | 473 +- kernel/sched/stop_task.c | 35 +- kernel/sched/syscalls.c | 1713 ++++ kernel/trace/bpf_trace.c | 15 +- kernel/trace/trace_kprobe.c | 14 +- kernel/trace/trace_probe.c | 2 - kernel/watchdog.c | 223 +- lib/Kconfig.debug | 14 + lib/dump_stack.c | 1 + lib/rhashtable.c | 12 +- net/bpf/bpf_dummy_struct_ops.c | 60 +- net/bpf/test_run.c | 15 +- net/core/filter.c | 29 +- net/core/xdp.c | 10 +- net/ipv4/bpf_tcp_ca.c | 93 +- net/ipv4/fou_bpf.c | 10 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/tcp_cong.c | 6 +- net/ipv4/tcp_cubic.c | 4 +- net/ipv4/tcp_dctcp.c | 4 +- net/netfilter/nf_conntrack_bpf.c | 10 +- net/netfilter/nf_nat_bpf.c | 10 +- net/xfrm/xfrm_interface_bpf.c | 10 +- scripts/gdb/linux/interrupts.py | 6 +- tools/Makefile | 10 +- .../bpf/bpftool/Documentation/bpftool-gen.rst | 58 +- tools/bpf/bpftool/gen.c | 237 +- tools/include/linux/bitops.h | 2 + tools/include/uapi/linux/bpf.h | 21 +- tools/include/uapi/linux/sched.h | 1 + tools/lib/bpf/bpf.c | 4 +- tools/lib/bpf/bpf.h | 4 +- tools/lib/bpf/libbpf.c | 97 +- tools/lib/bpf/libbpf_probes.c | 1 + tools/perf/util/probe-finder.c | 4 +- tools/sched_ext/.gitignore | 2 + tools/sched_ext/Makefile | 246 + tools/sched_ext/README.md | 270 + .../sched_ext/include/bpf-compat/gnu/stubs.h | 11 + tools/sched_ext/include/scx/common.bpf.h | 620 ++ tools/sched_ext/include/scx/common.h | 81 + tools/sched_ext/include/scx/compat.bpf.h | 143 + tools/sched_ext/include/scx/compat.h | 187 + .../sched_ext/include/scx/enums.autogen.bpf.h | 105 + tools/sched_ext/include/scx/enums.autogen.h | 41 + tools/sched_ext/include/scx/enums.bpf.h | 12 + tools/sched_ext/include/scx/enums.h | 27 + tools/sched_ext/include/scx/user_exit_info.h | 118 + tools/sched_ext/scx_central.bpf.c | 356 + tools/sched_ext/scx_central.c | 136 + tools/sched_ext/scx_flatcg.bpf.c | 954 +++ tools/sched_ext/scx_flatcg.c | 234 + tools/sched_ext/scx_flatcg.h | 51 + tools/sched_ext/scx_qmap.bpf.c | 827 ++ tools/sched_ext/scx_qmap.c | 155 + tools/sched_ext/scx_show_state.py | 42 + tools/sched_ext/scx_simple.bpf.c | 151 + tools/sched_ext/scx_simple.c | 107 + tools/testing/selftests/Makefile | 9 +- .../testing/selftests/bpf/bpf_experimental.h | 27 + .../selftests/bpf/bpf_testmod/bpf_testmod.c | 108 +- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 17 + .../selftests/bpf/prog_tests/bpf_iter.c | 44 +- .../selftests/bpf/prog_tests/cgroup_iter.c | 33 + .../bpf/prog_tests/global_func_dead_code.c | 60 + .../testing/selftests/bpf/prog_tests/iters.c | 209 + .../selftests/bpf/prog_tests/rcu_read_lock.c | 6 + .../selftests/bpf/prog_tests/spin_lock.c | 2 + .../prog_tests/test_struct_ops_maybe_null.c | 46 + .../bpf/prog_tests/test_struct_ops_module.c | 86 + .../testing/selftests/bpf/prog_tests/timer.c | 4 + .../selftests/bpf/prog_tests/verifier.c | 4 + ...f_iter_task_vma.c => bpf_iter_task_vmas.c} | 0 .../{bpf_iter_task.c => bpf_iter_tasks.c} | 0 .../bpf/progs/freplace_dead_global_func.c | 11 + tools/testing/selftests/bpf/progs/iters_css.c | 72 + .../selftests/bpf/progs/iters_css_task.c | 102 + .../testing/selftests/bpf/progs/iters_task.c | 41 + .../selftests/bpf/progs/iters_task_failure.c | 105 + .../selftests/bpf/progs/iters_task_vma.c | 54 + .../selftests/bpf/progs/iters_testmod_seq.c | 50 + .../selftests/bpf/progs/rcu_read_lock.c | 120 + .../bpf/progs/struct_ops_maybe_null.c | 29 + .../bpf/progs/struct_ops_maybe_null_fail.c | 24 + .../selftests/bpf/progs/struct_ops_module.c | 37 + .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_spin_lock.c | 65 + .../selftests/bpf/progs/test_spin_lock_fail.c | 44 + tools/testing/selftests/bpf/progs/timer.c | 63 +- .../selftests/bpf/progs/verifier_bits_iter.c | 232 + .../bpf/progs/verifier_global_subprogs.c | 101 + .../selftests/bpf/progs/verifier_spin_lock.c | 2 +- .../bpf/progs/verifier_subprog_precision.c | 4 +- tools/testing/selftests/bpf/test_loader.c | 9 +- tools/testing/selftests/bpf/test_maps.c | 18 +- tools/testing/selftests/bpf/test_maps.h | 5 + tools/testing/selftests/sched_ext/.gitignore | 6 + tools/testing/selftests/sched_ext/Makefile | 211 + tools/testing/selftests/sched_ext/config | 9 + .../selftests/sched_ext/create_dsq.bpf.c | 58 + .../testing/selftests/sched_ext/create_dsq.c | 57 + .../sched_ext/ddsp_bogus_dsq_fail.bpf.c | 42 + .../selftests/sched_ext/ddsp_bogus_dsq_fail.c | 60 + .../sched_ext/ddsp_vtimelocal_fail.bpf.c | 39 + .../sched_ext/ddsp_vtimelocal_fail.c | 59 + .../selftests/sched_ext/dsp_local_on.bpf.c | 68 + .../selftests/sched_ext/dsp_local_on.c | 60 + .../sched_ext/enq_last_no_enq_fails.bpf.c | 29 + .../sched_ext/enq_last_no_enq_fails.c | 64 + .../sched_ext/enq_select_cpu_fails.bpf.c | 43 + .../sched_ext/enq_select_cpu_fails.c | 61 + tools/testing/selftests/sched_ext/exit.bpf.c | 86 + tools/testing/selftests/sched_ext/exit.c | 64 + tools/testing/selftests/sched_ext/exit_test.h | 20 + .../testing/selftests/sched_ext/hotplug.bpf.c | 61 + tools/testing/selftests/sched_ext/hotplug.c | 170 + .../selftests/sched_ext/hotplug_test.h | 15 + .../sched_ext/init_enable_count.bpf.c | 53 + .../selftests/sched_ext/init_enable_count.c | 157 + .../testing/selftests/sched_ext/maximal.bpf.c | 166 + tools/testing/selftests/sched_ext/maximal.c | 54 + .../selftests/sched_ext/maybe_null.bpf.c | 36 + .../testing/selftests/sched_ext/maybe_null.c | 49 + .../sched_ext/maybe_null_fail_dsp.bpf.c | 25 + .../sched_ext/maybe_null_fail_yld.bpf.c | 28 + .../testing/selftests/sched_ext/minimal.bpf.c | 21 + tools/testing/selftests/sched_ext/minimal.c | 58 + .../selftests/sched_ext/prog_run.bpf.c | 33 + tools/testing/selftests/sched_ext/prog_run.c | 78 + .../testing/selftests/sched_ext/reload_loop.c | 74 + tools/testing/selftests/sched_ext/runner.c | 212 + tools/testing/selftests/sched_ext/scx_test.h | 131 + .../selftests/sched_ext/select_cpu_dfl.bpf.c | 40 + .../selftests/sched_ext/select_cpu_dfl.c | 75 + .../sched_ext/select_cpu_dfl_nodispatch.bpf.c | 89 + .../sched_ext/select_cpu_dfl_nodispatch.c | 75 + .../sched_ext/select_cpu_dispatch.bpf.c | 41 + .../selftests/sched_ext/select_cpu_dispatch.c | 73 + .../select_cpu_dispatch_bad_dsq.bpf.c | 37 + .../sched_ext/select_cpu_dispatch_bad_dsq.c | 59 + .../select_cpu_dispatch_dbl_dsp.bpf.c | 38 + .../sched_ext/select_cpu_dispatch_dbl_dsp.c | 59 + .../sched_ext/select_cpu_vtime.bpf.c | 92 + .../selftests/sched_ext/select_cpu_vtime.c | 62 + .../selftests/sched_ext/test_example.c | 49 + tools/testing/selftests/sched_ext/util.c | 71 + tools/testing/selftests/sched_ext/util.h | 13 + 224 files changed, 24754 insertions(+), 3360 deletions(-) create mode 100644 Documentation/scheduler/sched-ext.rst create mode 100644 include/linux/sched/ext.h create mode 100644 include/trace/events/sched_ext.h delete mode 100644 kernel/bpf/bpf_struct_ops_types.h create mode 100644 kernel/sched/ext.c create mode 100644 kernel/sched/ext.h create mode 100644 kernel/sched/ext_idle.c create mode 100644 kernel/sched/ext_idle.h create mode 100644 kernel/sched/syscalls.c create mode 100644 tools/sched_ext/.gitignore create mode 100644 tools/sched_ext/Makefile create mode 100644 tools/sched_ext/README.md create mode 100644 tools/sched_ext/include/bpf-compat/gnu/stubs.h create mode 100644 tools/sched_ext/include/scx/common.bpf.h create mode 100644 tools/sched_ext/include/scx/common.h create mode 100644 tools/sched_ext/include/scx/compat.bpf.h create mode 100644 tools/sched_ext/include/scx/compat.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.autogen.h create mode 100644 tools/sched_ext/include/scx/enums.bpf.h create mode 100644 tools/sched_ext/include/scx/enums.h create mode 100644 tools/sched_ext/include/scx/user_exit_info.h create mode 100644 tools/sched_ext/scx_central.bpf.c create mode 100644 tools/sched_ext/scx_central.c create mode 100644 tools/sched_ext/scx_flatcg.bpf.c create mode 100644 tools/sched_ext/scx_flatcg.c create mode 100644 tools/sched_ext/scx_flatcg.h create mode 100644 tools/sched_ext/scx_qmap.bpf.c create mode 100644 tools/sched_ext/scx_qmap.c create mode 100644 tools/sched_ext/scx_show_state.py create mode 100644 tools/sched_ext/scx_simple.bpf.c create mode 100644 tools/sched_ext/scx_simple.c create mode 100644 tools/testing/selftests/bpf/prog_tests/global_func_dead_code.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/prog_tests/test_struct_ops_module.c rename tools/testing/selftests/bpf/progs/{bpf_iter_task_vma.c => bpf_iter_task_vmas.c} (100%) rename tools/testing/selftests/bpf/progs/{bpf_iter_task.c => bpf_iter_tasks.c} (100%) create mode 100644 tools/testing/selftests/bpf/progs/freplace_dead_global_func.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css.c create mode 100644 tools/testing/selftests/bpf/progs/iters_css_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_failure.c create mode 100644 tools/testing/selftests/bpf/progs/iters_task_vma.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_maybe_null_fail.c create mode 100644 tools/testing/selftests/bpf/progs/struct_ops_module.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_bits_iter.c create mode 100644 tools/testing/selftests/bpf/progs/verifier_global_subprogs.c create mode 100644 tools/testing/selftests/sched_ext/.gitignore create mode 100644 tools/testing/selftests/sched_ext/Makefile create mode 100644 tools/testing/selftests/sched_ext/config create mode 100644 tools/testing/selftests/sched_ext/create_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/create_dsq.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_bogus_dsq_fail.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.bpf.c create mode 100644 tools/testing/selftests/sched_ext/ddsp_vtimelocal_fail.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.bpf.c create mode 100644 tools/testing/selftests/sched_ext/dsp_local_on.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_last_no_enq_fails.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.bpf.c create mode 100644 tools/testing/selftests/sched_ext/enq_select_cpu_fails.c create mode 100644 tools/testing/selftests/sched_ext/exit.bpf.c create mode 100644 tools/testing/selftests/sched_ext/exit.c create mode 100644 tools/testing/selftests/sched_ext/exit_test.h create mode 100644 tools/testing/selftests/sched_ext/hotplug.bpf.c create mode 100644 tools/testing/selftests/sched_ext/hotplug.c create mode 100644 tools/testing/selftests/sched_ext/hotplug_test.h create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.bpf.c create mode 100644 tools/testing/selftests/sched_ext/init_enable_count.c create mode 100644 tools/testing/selftests/sched_ext/maximal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maximal.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/maybe_null_fail_yld.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.bpf.c create mode 100644 tools/testing/selftests/sched_ext/minimal.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.bpf.c create mode 100644 tools/testing/selftests/sched_ext/prog_run.c create mode 100644 tools/testing/selftests/sched_ext/reload_loop.c create mode 100644 tools/testing/selftests/sched_ext/runner.c create mode 100644 tools/testing/selftests/sched_ext/scx_test.h create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dfl_nodispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_dispatch_dbl_dsp.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.bpf.c create mode 100644 tools/testing/selftests/sched_ext/select_cpu_vtime.c create mode 100644 tools/testing/selftests/sched_ext/test_example.c create mode 100644 tools/testing/selftests/sched_ext/util.c create mode 100644 tools/testing/selftests/sched_ext/util.h -- 2.34.1

1 399

[PATCH openEuler-1.0-LTS v2 0/2] xfs: fix stale imap reuse during page writeback
by Long Li 16 Dec '25

16 Dec '25

During page write-back operations, a copy of the imap is stored in wpc->imap. Even if the file's imap mapping changes during this process, the subsequent operations continue to reuse wpc->imap, causing data to be written to incorrect blocks that are not mapped to that file. Brian Foster (2): xfs: update fork seq counter on data fork changes xfs: remove superfluous writeback mapping eof trimming fs/xfs/libxfs/xfs_bmap.c | 11 ----------- fs/xfs/libxfs/xfs_bmap.h | 1 - fs/xfs/libxfs/xfs_iext_tree.c | 13 ++++++------- fs/xfs/libxfs/xfs_inode_fork.h | 2 +- fs/xfs/xfs_aops.c | 15 --------------- 5 files changed, 7 insertions(+), 35 deletions(-) -- 2.39.2

2 3

[PATCH OLK-6.6] iomap: fix dirty range tracking in iomap_folio_mkwrite_iter
by Long Li 16 Dec '25

16 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IDCSJV ----------------------------------------- When I test xfs with fsstress, got the following assert message: XFS (sda): ino 1a0b0a data fork has delalloc extent at [0x186:0x1] XFS: Assertion failed: 0, file: fs/xfs/xfs_icache.c, line: 1819 ------------[ cut here ]------------ kernel BUG at fs/xfs/xfs_message.c:102! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 3 PID: 940 Comm: kworker/3:1 Not tainted 6.6.0-g3697dae9bfac #192 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Workqueue: xfs-inodegc/sda xfs_inodegc_worker RIP: 0010:assfail+0x54/0x60 RSP: 0018:ffffc90003113e08 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8880651dd800 RCX: 000000007fffffff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82a12e0c RBP: ffffffffffffff20 R08: 00000000000025c2 R09: 0000000000000000 R10: 000000000000000a R11: 000000000000000a R12: 0000000000000000 R13: ffffffffffffff20 R14: ffff888077948000 R15: 0000000004208060 FS: 0000000000000000(0000) GS:ffff8880bcb80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561be0e1cf30 CR3: 0000000075fa4000 CR4: 00000000000006e0 Call Trace: <TASK> xfs_inodegc_set_reclaimable+0x1f1/0x220 xfs_inodegc_worker+0x10b/0x2e0 process_scheduled_works+0x1a5/0x5e0 worker_thread+0x1d1/0x4f0 ? apply_workqueue_attrs+0x70/0x70 kthread+0x149/0x1c0 ? kthread_exit+0x50/0x50 ret_from_fork+0x52/0x70 ? kthread_exit+0x50/0x50 ret_from_fork_asm+0x11/0x20 </TASK> Fix the incorrect dirty range tracking in iomap_folio_mkwrite_iter() which could lead to blocks being missed during writeback. Previously, iomap_set_range_dirty() was called with a wrong offset (0), which may cause some modified blocks not being marked as dirty and thus skip writeback. Calculate the correct offset within the folio from the iterator position to ensure all modified blocks are properly marked dirty and written back. Fixes: 0b4d2d8fba90 ("iomap: correct the dirty length in page mkwrite") Signed-off-by: Long Li <leo.lilong(a)huawei.com> --- fs/iomap/buffered-io.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 7a417bd8a9f3..33fbb3f8d45f 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1562,10 +1562,12 @@ static loff_t iomap_folio_mkwrite_iter(struct iomap_iter *iter, return ret; block_commit_write(&folio->page, 0, length); } else { + size_t poff = offset_in_folio(folio, iter->pos); + WARN_ON_ONCE(!folio_test_uptodate(folio)); ifs_alloc(iter->inode, folio, 0); - iomap_set_range_dirty(folio, 0, length); + iomap_set_range_dirty(folio, poff, length); } return length; -- 2.39.2

2 1

[PATCH OLK-6.6] i40e: remove read access to debugfs files
by Wang Liang 16 Dec '25

16 Dec '25

From: Jacob Keller <jacob.e.keller(a)intel.com> mainline inclusion from mainline-v6.17-rc5 commit 9fcdb1c3c4ba134434694c001dbff343f1ffa319 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ID0R34 CVE: CVE-2025-39901 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The 'command' and 'netdev_ops' debugfs files are a legacy debugging interface supported by the i40e driver since its early days by commit 02e9c290814c ("i40e: debugfs interface"). Both of these debugfs files provide a read handler which is mostly useless, and which is implemented with questionable logic. They both use a static 256 byte buffer which is initialized to the empty string. In the case of the 'command' file this buffer is literally never used and simply wastes space. In the case of the 'netdev_ops' file, the last command written is saved here. On read, the files contents are presented as the name of the device followed by a colon and then the contents of their respective static buffer. For 'command' this will always be "<device>: ". For 'netdev_ops', this will be "<device>: <last command written>". But note the buffer is shared between all devices operated by this module. At best, it is mostly meaningless information, and at worse it could be accessed simultaneously as there doesn't appear to be any locking mechanism. We have also recently received multiple reports for both read functions about their use of snprintf and potential overflow that could result in reading arbitrary kernel memory. For the 'command' file, this is definitely impossible, since the static buffer is always zero and never written to. For the 'netdev_ops' file, it does appear to be possible, if the user carefully crafts the command input, it will be copied into the buffer, which could be large enough to cause snprintf to truncate, which then causes the copy_to_user to read beyond the length of the buffer allocated by kzalloc. A minimal fix would be to replace snprintf() with scnprintf() which would cap the return to the number of bytes written, preventing an overflow. A more involved fix would be to drop the mostly useless static buffers, saving 512 bytes and modifying the read functions to stop needing those as input. Instead, lets just completely drop the read access to these files. These are debug interfaces exposed as part of debugfs, and I don't believe that dropping read access will break any script, as the provided output is pretty useless. You can find the netdev name through other more standard interfaces, and the 'netdev_ops' interface can easily result in garbage if you issue simultaneous writes to multiple devices at once. In order to properly remove the i40e_dbg_netdev_ops_buf, we need to refactor its write function to avoid using the static buffer. Instead, use the same logic as the i40e_dbg_command_write, with an allocated buffer. Update the code to use this instead of the static buffer, and ensure we free the buffer on exit. This fixes simultaneous writes to 'netdev_ops' on multiple devices, and allows us to remove the now unused static buffer along with removing the read access. Fixes: 02e9c290814c ("i40e: debugfs interface") Reported-by: Kunwu Chan <chentao(a)kylinos.cn> Closes: https://lore.kernel.org/intel-wired-lan/20231208031950.47410-1-chentao@kyli… Reported-by: Wang Haoran <haoranwangsec(a)gmail.com> Closes: https://lore.kernel.org/all/CANZ3JQRRiOdtfQJoP9QM=6LS1Jto8PGBGw6y7-TL=BcnzH… Reported-by: Amir Mohammad Jahangirzad <a.jahangirzad(a)gmail.com> Closes: https://lore.kernel.org/all/20250722115017.206969-1-a.jahangirzad@gmail.com/ Signed-off-by: Jacob Keller <jacob.e.keller(a)intel.com> Reviewed-by: Dawid Osuchowski <dawid.osuchowski(a)linux.intel.com> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov(a)intel.com> Reviewed-by: Simon Horman <horms(a)kernel.org> Reviewed-by: Kunwu Chan <kunwu.chan(a)linux.dev> Tested-by: Rinitha S <sx.rinitha(a)intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen(a)intel.com> Conflicts: drivers/net/ethernet/intel/i40e/i40e_debugfs.c [conflicts due to not merge 43f4466ca91d ("i40e: Add helper to access main VSI")] Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- .../net/ethernet/intel/i40e/i40e_debugfs.c | 121 +++--------------- 1 file changed, 19 insertions(+), 102 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c index a2fca58a91c3..35ce578dd6f3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -58,47 +58,6 @@ static struct i40e_veb *i40e_dbg_find_veb(struct i40e_pf *pf, int seid) * setup, adding or removing filters, or other things. Many of * these will be useful for some forms of unit testing. **************************************************************/ -static char i40e_dbg_command_buf[256] = ""; - -/** - * i40e_dbg_command_read - read for command datum - * @filp: the opened file - * @buffer: where to write the data for the user to read - * @count: the size of the user's buffer - * @ppos: file position offset - **/ -static ssize_t i40e_dbg_command_read(struct file *filp, char __user *buffer, - size_t count, loff_t *ppos) -{ - struct i40e_pf *pf = filp->private_data; - int bytes_not_copied; - int buf_size = 256; - char *buf; - int len; - - /* don't allow partial reads */ - if (*ppos != 0) - return 0; - if (count < buf_size) - return -ENOSPC; - - buf = kzalloc(buf_size, GFP_KERNEL); - if (!buf) - return -ENOSPC; - - len = snprintf(buf, buf_size, "%s: %s\n", - pf->vsi[pf->lan_vsi]->netdev->name, - i40e_dbg_command_buf); - - bytes_not_copied = copy_to_user(buffer, buf, len); - kfree(buf); - - if (bytes_not_copied) - return -EFAULT; - - *ppos = len; - return len; -} static char *i40e_filter_state_string[] = { "INVALID", @@ -1637,7 +1596,6 @@ static ssize_t i40e_dbg_command_write(struct file *filp, static const struct file_operations i40e_dbg_command_fops = { .owner = THIS_MODULE, .open = simple_open, - .read = i40e_dbg_command_read, .write = i40e_dbg_command_write, }; @@ -1646,47 +1604,6 @@ static const struct file_operations i40e_dbg_command_fops = { * The netdev_ops entry in debugfs is for giving the driver commands * to be executed from the netdev operations. **************************************************************/ -static char i40e_dbg_netdev_ops_buf[256] = ""; - -/** - * i40e_dbg_netdev_ops_read - read for netdev_ops datum - * @filp: the opened file - * @buffer: where to write the data for the user to read - * @count: the size of the user's buffer - * @ppos: file position offset - **/ -static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer, - size_t count, loff_t *ppos) -{ - struct i40e_pf *pf = filp->private_data; - int bytes_not_copied; - int buf_size = 256; - char *buf; - int len; - - /* don't allow partal reads */ - if (*ppos != 0) - return 0; - if (count < buf_size) - return -ENOSPC; - - buf = kzalloc(buf_size, GFP_KERNEL); - if (!buf) - return -ENOSPC; - - len = snprintf(buf, buf_size, "%s: %s\n", - pf->vsi[pf->lan_vsi]->netdev->name, - i40e_dbg_netdev_ops_buf); - - bytes_not_copied = copy_to_user(buffer, buf, len); - kfree(buf); - - if (bytes_not_copied) - return -EFAULT; - - *ppos = len; - return len; -} /** * i40e_dbg_netdev_ops_write - write into netdev_ops datum @@ -1700,35 +1617,36 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; + char *cmd_buf, *buf_tmp; int bytes_not_copied; struct i40e_vsi *vsi; - char *buf_tmp; int vsi_seid; int i, cnt; /* don't allow partial writes */ if (*ppos != 0) return 0; - if (count >= sizeof(i40e_dbg_netdev_ops_buf)) - return -ENOSPC; - memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf)); - bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf, - buffer, count); - if (bytes_not_copied) + cmd_buf = kzalloc(count + 1, GFP_KERNEL); + if (!cmd_buf) + return count; + bytes_not_copied = copy_from_user(cmd_buf, buffer, count); + if (bytes_not_copied) { + kfree(cmd_buf); return -EFAULT; - i40e_dbg_netdev_ops_buf[count] = '\0'; + } + cmd_buf[count] = '\0'; - buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n'); + buf_tmp = strchr(cmd_buf, '\n'); if (buf_tmp) { *buf_tmp = '\0'; - count = buf_tmp - i40e_dbg_netdev_ops_buf + 1; + count = buf_tmp - cmd_buf + 1; } - if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) { + if (strncmp(cmd_buf, "change_mtu", 10) == 0) { int mtu; - cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i", + cnt = sscanf(&cmd_buf[11], "%i %i", &vsi_seid, &mtu); if (cnt != 2) { dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n"); @@ -1750,8 +1668,8 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } - } else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) { - cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid); + } else if (strncmp(cmd_buf, "set_rx_mode", 11) == 0) { + cnt = sscanf(&cmd_buf[11], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n"); goto netdev_ops_write_done; @@ -1771,8 +1689,8 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } - } else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) { - cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid); + } else if (strncmp(cmd_buf, "napi", 4) == 0) { + cnt = sscanf(&cmd_buf[4], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "napi <vsi_seid>\n"); goto netdev_ops_write_done; @@ -1790,21 +1708,20 @@ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, dev_info(&pf->pdev->dev, "napi called\n"); } } else { - dev_info(&pf->pdev->dev, "unknown command '%s'\n", - i40e_dbg_netdev_ops_buf); + dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf); dev_info(&pf->pdev->dev, "available commands\n"); dev_info(&pf->pdev->dev, " change_mtu <vsi_seid> <mtu>\n"); dev_info(&pf->pdev->dev, " set_rx_mode <vsi_seid>\n"); dev_info(&pf->pdev->dev, " napi <vsi_seid>\n"); } netdev_ops_write_done: + kfree(cmd_buf); return count; } static const struct file_operations i40e_dbg_netdev_ops_fops = { .owner = THIS_MODULE, .open = simple_open, - .read = i40e_dbg_netdev_ops_read, .write = i40e_dbg_netdev_ops_write, }; -- 2.34.1

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[PATCH OLK-6.6 0/2] ARM: fix hash_name() issue
by Zizhi Wo 16 Dec '25

16 Dec '25

Fix hash_name() issue. Russell King (Oracle) (2): ARM: allow __do_kernel_fault() to report execution of memory faults ARM: fix hash_name() fault arch/arm/mm/fault.c | 57 +++++++++++++++++++++++++++++++++++++-------- 1 file changed, 47 insertions(+), 10 deletions(-) -- 2.39.2

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[PATCH OLK-5.10 0/2] ARM: fix hash_name() issue
by Zizhi Wo 16 Dec '25

16 Dec '25

Fix hash_name() issue. Russell King (Oracle) (2): ARM: allow __do_kernel_fault() to report execution of memory faults ARM: fix hash_name() fault arch/arm/mm/fault.c | 63 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 50 insertions(+), 13 deletions(-) -- 2.39.2

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