January 2024 - Kernel - mailweb.openeuler.org

[PATCH OLK-6.6 V2 00/12] infrastructure for scheduler bpf
by Guan Jing 08 Jan '24

08 Jan '24

infrastructure for scheduler bpf Guan Jing (12): sched: programmable: Introduce bpf sched sched: programmable: Add a tag for the task sched: programmable: Add a tag for the task group sched: programmable: Add user interface of task group tag sched: programmable: Add user interface of task tag sched: basic infrastructure for scheduler bpf sched: introduce bpf_sched_enable() libbpf: add support for scheduler bpf programs bpftool: recognize scheduler programs sched: Add helper functions to get cpu statistics sched: programmable: Add hook in select_task_rq_fair() sched: programmable: Add hook in can_migrate_task() arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/proc/base.c | 64 ++++++++++++++ include/linux/bpf_sched.h | 50 +++++++++++ include/linux/bpf_types.h | 4 + include/linux/sched.h | 39 +++++++++ include/linux/sched_hook_defs.h | 4 + include/uapi/linux/bpf.h | 9 ++ init/init_task.c | 3 + kernel/bpf/Kconfig | 12 +++ kernel/bpf/btf.c | 1 + kernel/bpf/syscall.c | 27 ++++++ kernel/bpf/trampoline.c | 1 + kernel/bpf/verifier.c | 11 ++- kernel/sched/bpf_sched.c | 102 +++++++++++++++++++++ kernel/sched/build_utility.c | 4 + kernel/sched/core.c | 117 +++++++++++++++++++++++++ kernel/sched/fair.c | 46 ++++++++++ kernel/sched/sched.h | 10 +++ scripts/bpf_doc.py | 4 + tools/include/uapi/linux/bpf.h | 9 ++ tools/lib/bpf/bpf.c | 1 + tools/lib/bpf/libbpf.c | 23 ++++- tools/lib/bpf/libbpf.h | 2 + tools/lib/bpf/libbpf.map | 1 + 25 files changed, 544 insertions(+), 2 deletions(-) create mode 100644 include/linux/bpf_sched.h create mode 100644 include/linux/sched_hook_defs.h create mode 100644 kernel/sched/bpf_sched.c -- 2.34.1

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[PATH OLK-6.6 v2 0/2] kabi reserve for memcg and cgroup_bpf
by Lu Jialin 08 Jan '24

08 Jan '24

v2->v1: 1)change the kabi reserve number for struct cgroup_bpf. 2)delete the reserve for memcg_vmstats{percpu} Lu Jialin (2): memcg/kabi: reserve space for memcg related structures cgroup_bpf/kabi: reserve space for cgroup_bpf releated structure include/linux/bpf-cgroup-defs.h | 20 ++++++++++++++++++++ include/linux/bpf.h | 11 +++++++++++ include/linux/memcontrol.h | 25 +++++++++++++++++++++++++ 3 files changed, 56 insertions(+) -- 2.34.1

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[PATCH OLK-6.6 V2 00/12] infrastructure for scheduler bpf
by Guan Jing 08 Jan '24

08 Jan '24

infrastructure for scheduler bpf Guan Jing (12): sched: programmable: Introduce bpf sched sched: programmable: Add a tag for the task sched: programmable: Add a tag for the task group sched: programmable: Add user interface of task group tag sched: programmable: Add user interface of task tag sched: basic infrastructure for scheduler bpf sched: introduce bpf_sched_enable() libbpf: add support for scheduler bpf programs bpftool: recognize scheduler programs sched: Add helper functions to get cpu statistics sched: programmable: Add hook in select_task_rq_fair() sched: programmable: Add hook in can_migrate_task() arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/proc/base.c | 64 ++++++++++++++ include/linux/bpf_sched.h | 50 +++++++++++ include/linux/bpf_types.h | 4 + include/linux/sched.h | 39 +++++++++ include/linux/sched_hook_defs.h | 4 + include/uapi/linux/bpf.h | 9 ++ init/init_task.c | 3 + kernel/bpf/Kconfig | 12 +++ kernel/bpf/btf.c | 1 + kernel/bpf/syscall.c | 27 ++++++ kernel/bpf/trampoline.c | 1 + kernel/bpf/verifier.c | 11 ++- kernel/sched/bpf_sched.c | 102 +++++++++++++++++++++ kernel/sched/build_utility.c | 4 + kernel/sched/core.c | 117 +++++++++++++++++++++++++ kernel/sched/fair.c | 46 ++++++++++ kernel/sched/sched.h | 10 +++ scripts/bpf_doc.py | 4 + tools/include/uapi/linux/bpf.h | 9 ++ tools/lib/bpf/bpf.c | 1 + tools/lib/bpf/libbpf.c | 23 ++++- tools/lib/bpf/libbpf.h | 2 + tools/lib/bpf/libbpf.map | 1 + 25 files changed, 544 insertions(+), 2 deletions(-) create mode 100644 include/linux/bpf_sched.h create mode 100644 include/linux/sched_hook_defs.h create mode 100644 kernel/sched/bpf_sched.c -- 2.34.1

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[PATCH OLK-5.10 0/4] ext4: fix some ext4_lblk_t overflow issues
by Baokun Li 08 Jan '24

08 Jan '24

Baokun Li (4): ext4: add two helper functions extent_logical_end() and pa_logical_end() ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow ext4: avoid overlapping preallocations due to overflow ext4: prevent the normalized size from exceeding EXT_MAX_BLOCKS fs/ext4/mballoc.c | 55 ++++++++++++++++++++++------------------------- fs/ext4/mballoc.h | 14 ++++++++++++ 2 files changed, 40 insertions(+), 29 deletions(-) -- 2.31.1

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[PATCH OLK-6.6 v2 0/2] ext4: fix slab-out-of-bounds in ext4_find_extent()
by Baokun Li 08 Jan '24

08 Jan '24

yangerkun (2): ext4: avoid recheck extent for EXT4_EX_FORCE_CACHE ext4: check magic even the extent block bh is verified fs/ext4/extents.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) -- 2.31.1

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[PATCH OLK-6.6 v2] aio: add timeout validity check for io_[p]getevents
by Baokun Li 08 Jan '24

08 Jan '24

From: "zhangyi (F)" <yi.zhang(a)huawei.com> maillist inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8U48M CVE: NA Reference: https://lore.kernel.org/lkml/1564451504-27906-1-git-send-email-yi.zhang@hua… --------------------------- io_[p]getevents syscall should return -EINVAL if timeout is out of range, add this validity check. Signed-off-by: zhangyi (F) <yi.zhang(a)huawei.com> Reviewed-by: Jeff Moyer <jmoyer(a)redhat.com> Cc: Jeff Moyer <jmoyer(a)redhat.com> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: Deepa Dinamani <deepa.kernel(a)gmail.com> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/aio.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index f8589caef9c1..73555729bc36 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -2170,10 +2170,17 @@ static long do_io_getevents(aio_context_t ctx_id, struct io_event __user *events, struct timespec64 *ts) { - ktime_t until = ts ? timespec64_to_ktime(*ts) : KTIME_MAX; - struct kioctx *ioctx = lookup_ioctx(ctx_id); + ktime_t until = KTIME_MAX; + struct kioctx *ioctx = NULL; long ret = -EINVAL; + if (ts) { + if (!timespec64_valid(ts)) + return ret; + until = timespec64_to_ktime(*ts); + } + + ioctx = lookup_ioctx(ctx_id); if (likely(ioctx)) { if (likely(min_nr <= nr && min_nr >= 0)) ret = read_events(ioctx, min_nr, nr, events, until); -- 2.31.1

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[PATCH OLK-6.6 00/10] Backport etmem feature to OLK 6.6
by Yuchen Tang 08 Jan '24

08 Jan '24

v2 -> v3 - fix git message style - fix etmem scan and swap config v1 -> v2 - make independent patches to export symbols we need - make independent patches for etmem scan and swap config - fix indentation and code style problems Yuchen Tang (10): etmem: a tiered memory manager etmem: etmem scan, the page hotness tracker mm: Export symbol __pud_trans_huge_lock mm: Export symbol walk_page_range etmem: add etmem scan feature to openEuler mm: Export symbol reclaim_pages etmem: add etmem swap feature to openEuler etmem: add original kernel swap enabled options etmem: add swapcache reclaim to etmem etmem: enable etmem configurations arch/arm64/configs/openeuler_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 3 + fs/proc/Makefile | 3 + fs/proc/base.c | 8 + fs/proc/etmem_proc.c | 216 ++++ fs/proc/etmem_scan.c | 1383 ++++++++++++++++++++++++ fs/proc/etmem_scan.h | 149 +++ fs/proc/etmem_swap.c | 283 +++++ fs/proc/internal.h | 4 + include/linux/etmem.h | 75 ++ include/linux/mm.h | 4 + include/linux/mm_types.h | 5 + include/linux/swap.h | 1 + include/uapi/asm-generic/mman-common.h | 4 + mm/Kconfig | 33 + mm/Makefile | 1 + mm/etmem.c | 384 +++++++ mm/huge_memory.c | 1 + mm/internal.h | 1 - mm/madvise.c | 16 + mm/pagewalk.c | 1 + mm/swap_state.c | 4 + mm/vmscan.c | 16 + virt/kvm/kvm_main.c | 8 + 24 files changed, 2605 insertions(+), 1 deletion(-) create mode 100644 fs/proc/etmem_proc.c create mode 100644 fs/proc/etmem_scan.c create mode 100644 fs/proc/etmem_scan.h create mode 100644 fs/proc/etmem_swap.c create mode 100644 include/linux/etmem.h create mode 100644 mm/etmem.c -- 2.33.0

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[PATCH OLK-6.6 v2] pipe: Fix endless sleep problem due to the out-of-order
by Baokun Li 08 Jan '24

08 Jan '24

From: yangerkun <yangerkun(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8U3TT --------------------------- Thers is a out-of-order access problem which would cause endless sleep when we use pipe with epoll. The story is following, we assume the ring size is 2, the ring head is 1, the ring tail is 0, task0 is write task, task1 is read task, task2 is write task. Task0 Task1 Task2 epoll_ctl(fd, EPOLL_CTL_ADD, ...) pipe_poll() poll_wait() tail = READ_ONCE(pipe->tail); // Re-order and get tail=0 pipe_read tail++ //tail=1 pipe_write head++ //head=2 head = READ_ONCE(pipe->head); // head = 2 check ring is full by head - tail Task0 get head = 2 and tail = 0, so it mistake that the pipe ring is full, then task0 is not add into ready list. If the ring is not full anymore, task0 would not be woken up forever. The reason of this problem is that we got inconsistent head/tail value of the pipe ring, so we fix the problem by getting them protected. Signed-off-by: yangerkun <yangerkun(a)huawei.com> Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/pipe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/pipe.c b/fs/pipe.c index 139190165a1c..34752ba942ab 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -672,8 +672,10 @@ pipe_poll(struct file *filp, poll_table *wait) * if something changes and you got it wrong, the poll * table entry will wake you up and fix it. */ + spin_lock_irq(&pipe->rd_wait.lock); head = READ_ONCE(pipe->head); tail = READ_ONCE(pipe->tail); + spin_unlock_irq(&pipe->rd_wait.lock); mask = 0; if (filp->f_mode & FMODE_READ) { -- 2.31.1

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[PATCH openEuler-1.0-LTS] nvmet: nul-terminate the NQNs passed in the connect command
by Cheng Yu 08 Jan '24

08 Jan '24

From: Christoph Hellwig <hch(a)lst.de> mainline inclusion from mainline-v6.7-rc3 commit 1c22e0295a5eb571c27b53c7371f95699ef705ff category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8H4UJ CVE: CVE-2023-6121 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The host and subsystem NQNs are passed in the connect command payload and interpreted as nul-terminated strings. Ensure they actually are nul-terminated before using them. Fixes: a07b4970f464 "nvmet: add a generic NVMe target") Reported-by: Alon Zahavi <zahavi.alon(a)gmail.com> Reviewed-by: Chaitanya Kulkarni <kch(a)nvidia.com> Signed-off-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Keith Busch <kbusch(a)kernel.org> Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- drivers/nvme/target/fabrics-cmd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/nvme/target/fabrics-cmd.c b/drivers/nvme/target/fabrics-cmd.c index d84ae004cb85..637160deb3ac 100644 --- a/drivers/nvme/target/fabrics-cmd.c +++ b/drivers/nvme/target/fabrics-cmd.c @@ -153,6 +153,8 @@ static void nvmet_execute_admin_connect(struct nvmet_req *req) goto out; } + d->subsysnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; + d->hostnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; status = nvmet_alloc_ctrl(d->subsysnqn, d->hostnqn, req, le32_to_cpu(c->kato), &ctrl); if (status) @@ -203,6 +205,8 @@ static void nvmet_execute_io_connect(struct nvmet_req *req) goto out; } + d->subsysnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; + d->hostnqn[NVMF_NQN_FIELD_LEN - 1] = '\0'; status = nvmet_ctrl_find_get(d->subsysnqn, d->hostnqn, le16_to_cpu(d->cntlid), req, &ctrl); -- 2.25.1

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[PATCH OLK-6.6 0/2] ext4: fix slab-out-of-bounds in ext4_find_extent()
by Baokun Li 08 Jan '24

08 Jan '24

yangerkun (2): ext4: avoid recheck extent for EXT4_EX_FORCE_CACHE ext4: check magic even the extent block bh is verified fs/ext4/extents.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) -- 2.31.1

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