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[PATCH OLK-6.6 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

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[PATCH OLK-6.6 0/3] backport OLK-5.10 pci sub-system patches to OLK-6.6
by Jiangtian Feng 10 Jan '24

10 Jan '24

*** BLURB HERE *** Jiangtian Feng (3): Author: geruijun <geruijun(a)huawei.com> Date: Mon Dec 27 19:43:22 2021 +0800 Author: Bo Wu <wubo40(a)huawei.com> Date: Mon Dec 27 19:43:24 2021 +0800 Author: Ruijun Ge <geruijun(a)huawei.com> Date: Mon Dec 27 19:43:25 2021 +0800 drivers/pci/quirks.c | 27 +++++++++++++++++++++++++++ include/linux/pci_ids.h | 3 +++ 2 files changed, 30 insertions(+) -- 2.33.0

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[PATCH OLK-6.6 00/31] SMMU HTTU sync from 5.10
by jiaqingtong 10 Jan '24

10 Jan '24

SMMU HTTU sync from 5.10 Jean-Philippe Brucker (1): iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Keqian Zhu (3): iommu: Introduce dirty log tracking framework vfio/iommu_type1: Fix the logic of updating num_non_hwdbm_domains iommu: Stop tracking the dirty log status of iommu_domain Kunkun Jiang (18): iommu/io-pgtable-arm: Add quirk ARM_HD and ARM_BBMLx iommu/io-pgtable-arm: Fix attach device failed when smmuv3 supports HTTU iommu/io-pgtable-arm: Add and realize split_block ops iommu/io-pgtable-arm: Add and realize merge_page ops iommu/io-pgtable-arm: Add and realize sync_dirty_log ops iommu/io-pgtable-arm: Add and realize clear_dirty_log ops iommu/arm-smmu-v3: Add feature detection for BBML iommu/arm-smmu-v3: Realize switch_dirty_log iommu ops iommu/arm-smmu-v3: Realize sync_dirty_log iommu ops iommu/arm-smmu-v3: Realize clear_dirty_log iommu ops iommu/arm-smmu-v3: Realize support_dirty_log iommu ops vfio/iommu_type1: Add HWDBM status maintenance vfio/iommu_type1: Optimize dirty bitmap population based on iommu HWDBM vfio/iommu_type1: Add support for manual dirty log clear vfio/iommu_type1: replace kvmalloc with kvzalloc and kfree with kvfree iommu/arm-smmu-v3: Enable HTTU for stage1 with io-pgtable mapping iommu: Fix compliation failure caused by iommu_device_register vfio/iommu: Fix uncorrect type parameters which used in bitmap operations jiaqingtong (9): fix conflit with 41e1eb2546e9c8200d32f11e4b47d86d156a5a97("iommu/io-pgtable-arm: Prepare PTE methods for handling multiple entries") fix conflit with 41e1eb2546e9c8200d32f11e4b47d86d156a5a97("iommu/io-pgtable-arm: Prepare PTE methods for handling multiple entries") previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") fix d86d9f910d53 ,change iommu_pgsize's para previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") vfio_domain delete port member. Fixes: 71cfafda9c9b ("vfio: Move the Intel no-snoop control off of IOMMU_CACHE") iommu:Introduce dirty log tracking framework: conflit with 9abe2ac834851a7d0b0756e295cf7a292c45ca53 change to arm_lpae_install_table to accept arm_lpae_iopte previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") conflit with 9a630a4b,need move to iommu_domain_ops conflit with ec288a2c, change func .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 2 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 268 +++++++++++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 17 +- drivers/iommu/io-pgtable-arm.c | 411 +++++++++++++++++- drivers/iommu/iommu.c | 188 +++++++- drivers/vfio/vfio_iommu_type1.c | 314 ++++++++++++- include/linux/io-pgtable.h | 23 + include/linux/iommu.h | 67 +++ include/trace/events/iommu.h | 63 +++ include/uapi/linux/vfio.h | 36 +- 10 files changed, 1365 insertions(+), 24 deletions(-) base-commit: f898c7c8c095242ad10bfff5c1f8c52c64488f96 -- 2.43.GIT

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[PATCH OLK-6.6 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

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[PATCH OLK-6.6 v8 0/6] block: Add config to show info about opening a mounted device for write
by Li Lingfeng 10 Jan '24

10 Jan '24

v1->v2: 1) Replace BLK_DEV_DUMPINFO with BLK_DEV_WRITE_MOUNTED_QUIET, which is logically opposite; 2) Make BLK_DEV_WRITE_MOUNTED_QUIET dependent on BLK_DEV_WRITE_MOUNTED, and decide whether to set bd_writers by BLK_DEV_WRITE_MOUNTED_QUIET; 3) Move bdev_dump_info() into bdev_may_open(); 4) Add the cmdline interface to control whether to show info; 5) Pass the state of "writes blocked" to part0 when mounting a partition. v2->v3: Add restriction for modifying bd_writers. v3->v4: 1) Count bd_writers regardless of whether bdev_allow_write_mounted is set; 2) Expand the meaning of bdev_allow_write_mounted; 3) Add config option to detect writing to part0 while partitions mounted; 4) Add bd_mounters to record the number of times that part0 or partition is mounted; 5) Show info about opening a lower device for write while upper-layers mounted. v4->v5: Move introduction of bd_mounters to patch1. v5->v6: Delete redundant conflict judgment. v6->v7: 1) Replace BLK_DEV_WRITE_MOUNTED_QUIET with BLK_DEV_WRITE_MOUNTED_DUMP; 2) Remove restriction for setting bdev_allow_write_mounted by cmdline. v7->v8: 1) Add detection of mounting part0 while partitions write opened; 2) Add detection of writing partitions while part0 mounted; 3) Add config in openeuler_defconfig. Li Lingfeng (6): block: Count writers and mounters regardless of whether bdev_allow_write_mounted is set block: Expand the meaning of bdev_allow_write_mounted block: Add config option to detect writing to part0 while partitions mounted block: Add config option to show info about opening a mounted device for write block: Show info about opening a lower device for write while upper-layers mounted add config about writing mounted devices in openeuler_defconfig arch/arm64/configs/openeuler_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 3 + block/Kconfig | 17 ++++ block/bdev.c | 122 +++++++++++++++++++++---- include/linux/blk_types.h | 1 + 5 files changed, 129 insertions(+), 17 deletions(-) -- 2.31.1

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[PATCH OLK-6.6] pid_ns: Make pid_max per namespace
by Yi Yang 10 Jan '24

10 Jan '24

From: Li Zefan <lizefan(a)huawei.com> euler inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8TCPY ------------------------------------------------- The adjusted pid_max on the host also takes effect in the container. Move pid_max to pid_namespace to fix this problem. Signed-off-by: Li Zefan <lizefan(a)huawei.com> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + include/linux/pid.h | 2 + include/linux/pid_namespace.h | 3 ++ init/Kconfig | 6 +++ kernel/pid.c | 54 +++++++++++++++++++++++++- kernel/pid_namespace.c | 13 +++++++ kernel/sysctl.c | 2 + kernel/trace/pid_list.c | 4 ++ kernel/trace/trace.c | 4 ++ kernel/trace/trace.h | 2 + 11 files changed, 90 insertions(+), 2 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9a053bc885dd..a040a64a8350 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -999,6 +999,7 @@ CONFIG_ARCH_USE_QUEUED_RWLOCKS=y CONFIG_QUEUED_RWLOCKS=y CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y +CONFIG_PID_MAX_PER_NAMESPACE=y CONFIG_FREEZER=y # diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 4bf011ed6307..e5dd6035346e 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -1015,6 +1015,7 @@ CONFIG_QUEUED_RWLOCKS=y CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y +CONFIG_PID_MAX_PER_NAMESPACE=y CONFIG_FREEZER=y # diff --git a/include/linux/pid.h b/include/linux/pid.h index 653a527574c4..b90bc447d2a2 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -113,8 +113,10 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new, struct pid_namespace; extern struct pid_namespace init_pid_ns; +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; extern int pid_max_min, pid_max_max; +#endif /* * look up a PID in the hash table. Must be called with the tasklist_lock diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index f9f9931e02d6..0a7c6dab0b7b 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -36,6 +36,9 @@ struct pid_namespace { #endif struct user_namespace *user_ns; struct ucounts *ucounts; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + int pid_max; +#endif int reboot; /* group exit code if this pidns was rebooted */ struct ns_common ns; #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) diff --git a/init/Kconfig b/init/Kconfig index 869eea4108d0..d52550d35427 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -2104,3 +2104,9 @@ config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE # <asm/syscall_wrapper.h>. config ARCH_HAS_SYSCALL_WRAPPER def_bool n + +config PID_MAX_PER_NAMESPACE + bool "Make pid_max per namespace" + default n + help + Say Y here to enable make pid_max per namespace. diff --git a/kernel/pid.c b/kernel/pid.c index 383abde0c208..db99713600fc 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -59,12 +59,16 @@ struct pid init_struct_pid = { }, } }; -int pid_max = PID_MAX_DEFAULT; - #define RESERVED_PIDS 300 +#ifndef CONFIG_PID_MAX_PER_NAMESPACE +int pid_max = PID_MAX_DEFAULT; int pid_max_min = RESERVED_PIDS + 1; int pid_max_max = PID_MAX_LIMIT; +#else +static int pid_max_min = RESERVED_PIDS + 1; +static int pid_max_max = PID_MAX_LIMIT; +#endif /* * PID-map pages start out as NULL, they get allocated upon @@ -80,6 +84,9 @@ struct pid_namespace init_pid_ns = { .child_reaper = &init_task, .user_ns = &init_user_ns, .ns.inum = PROC_PID_INIT_INO, +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + .pid_max = PID_MAX_DEFAULT, +#endif #ifdef CONFIG_PID_NS .ns.ops = &pidns_operations, #endif @@ -194,7 +201,11 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, tid = set_tid[ns->level - i]; retval = -EINVAL; +#ifndef CONFIG_PID_MAX_PER_NAMESPACE if (tid < 1 || tid >= pid_max) +#else + if (tid < 1 || tid >= task_active_pid_ns(current)->pid_max) +#endif goto out_free; /* * Also fail if a PID != 1 is requested and @@ -234,7 +245,11 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, * a partially initialized PID (see below). */ nr = idr_alloc_cyclic(&tmp->idr, NULL, pid_min, +#ifndef CONFIG_PID_MAX_PER_NAMESPACE pid_max, GFP_ATOMIC); +#else + tmp->pid_max, GFP_ATOMIC); +#endif } spin_unlock_irq(&pidmap_lock); idr_preload_end(); @@ -646,8 +661,37 @@ SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags) return fd; } +#ifdef CONFIG_PID_MAX_PER_NAMESPACE +static int proc_dointvec_pidmax(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + struct ctl_table tmp; + + tmp = *table; + tmp.data = &task_active_pid_ns(current)->pid_max; + + return proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); +} + +static struct ctl_table pid_ctl_table[] = { + { + .procname = "pid_max", + .data = &init_pid_ns.pid_max, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_pidmax, + .extra1 = &pid_max_min, + .extra2 = &pid_max_max, + }, + {} +}; +#endif + void __init pid_idr_init(void) { +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + int pid_max = init_pid_ns.pid_max; +#endif /* Verify no one has done anything silly: */ BUILD_BUG_ON(PID_MAX_LIMIT >= PIDNS_ADDING); @@ -658,6 +702,9 @@ void __init pid_idr_init(void) PIDS_PER_CPU_MIN * num_possible_cpus()); pr_info("pid_max: default: %u minimum: %u\n", pid_max, pid_max_min); +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + init_pid_ns.pid_max = pid_max; +#endif idr_init(&init_pid_ns.idr); init_pid_ns.pid_cachep = kmem_cache_create("pid", @@ -665,6 +712,9 @@ void __init pid_idr_init(void) __alignof__(struct pid), SLAB_HWCACHE_ALIGN | SLAB_PANIC | SLAB_ACCOUNT, NULL); +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + register_sysctl_init("kernel", pid_ctl_table); +#endif } static struct file *__pidfd_fget(struct task_struct *task, int fd) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 619972c78774..c837b1096dcb 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -110,6 +110,9 @@ static struct pid_namespace *create_pid_namespace(struct user_namespace *user_ns ns->user_ns = get_user_ns(user_ns); ns->ucounts = ucounts; ns->pid_allocated = PIDNS_ADDING; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + ns->pid_max = parent_pid_ns->pid_max; +#endif #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) ns->memfd_noexec_scope = pidns_memfd_noexec_scope(parent_pid_ns); #endif @@ -295,6 +298,10 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, next = idr_get_cursor(&pid_ns->idr) - 1; tmp.data = &next; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + tmp.extra2 = &pid_ns->pid_max; +#endif + ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); if (!ret && write) idr_set_cursor(&pid_ns->idr, next + 1); @@ -302,7 +309,9 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, return ret; } +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; +#endif static struct ctl_table pid_ns_ctl_table[] = { { .procname = "ns_last_pid", @@ -310,7 +319,11 @@ static struct ctl_table pid_ns_ctl_table[] = { .mode = 0666, /* permissions are checked in the handler */ .proc_handler = pid_ns_ctl_handler, .extra1 = SYSCTL_ZERO, +#ifndef CONFIG_PID_MAX_PER_NAMESPACE .extra2 = &pid_max, +#else + .extra2 = &init_pid_ns.pid_max, +#endif }, { } }; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 354a2d294f52..e84df0818517 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1809,6 +1809,7 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif +#ifndef CONFIG_PID_MAX_PER_NAMESPACE { .procname = "pid_max", .data = &pid_max, @@ -1818,6 +1819,7 @@ static struct ctl_table kern_table[] = { .extra1 = &pid_max_min, .extra2 = &pid_max_max, }, +#endif { .procname = "panic_on_oops", .data = &panic_on_oops, diff --git a/kernel/trace/pid_list.c b/kernel/trace/pid_list.c index 95106d02b32d..8056d7441d05 100644 --- a/kernel/trace/pid_list.c +++ b/kernel/trace/pid_list.c @@ -414,7 +414,11 @@ struct trace_pid_list *trace_pid_list_alloc(void) int i; /* According to linux/thread.h, pids can be no bigger that 30 bits */ +#ifndef CONFIG_PID_MAX_PER_NAMESPACE WARN_ON_ONCE(pid_max > (1 << 30)); +#else + WARN_ON_ONCE(task_active_pid_ns(current)->pid_max > (1 << 30)); +#endif pid_list = kzalloc(sizeof(*pid_list), GFP_KERNEL); if (!pid_list) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b656cab67f67..5afa58302b06 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5423,7 +5423,11 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled) if (mask == TRACE_ITER_RECORD_TGID) { if (!tgid_map) { +#ifndef CONFIG_PID_MAX_PER_NAMESPACE tgid_map_max = pid_max; +#else + tgid_map_max = init_pid_ns.pid_max; +#endif map = kvcalloc(tgid_map_max + 1, sizeof(*tgid_map), GFP_KERNEL); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index d608f6128704..52123df262b2 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -695,7 +695,9 @@ extern unsigned long tracing_thresh; /* PID filtering */ +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; +#endif bool trace_find_filtered_pid(struct trace_pid_list *filtered_pids, pid_t search_pid); -- 2.25.1

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[PATCH openEuler-22.03-LTS] livepatch/core: Disable support for replacing
by Zheng Yejian 10 Jan '24

10 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8ORHJ -------------------------------- Replacing is an optimization for livepatching based on ftrace, the wo_ftrace solution do not support it. Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> --- kernel/livepatch/core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 40259a2988e9..cc7e140088df 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -1155,6 +1155,9 @@ static void klp_init_func_early(struct klp_object *obj, kobject_init(&func->kobj, &klp_ktype_func); list_add_tail(&func->node, &obj->func_list); func->func_node = NULL; +#ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY + func->nop = false; +#endif } static void klp_init_object_early(struct klp_patch *patch, @@ -1165,6 +1168,7 @@ static void klp_init_object_early(struct klp_patch *patch, list_add_tail(&obj->node, &patch->obj_list); #ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY obj->mod = NULL; + obj->dynamic = false; #endif } @@ -1199,6 +1203,12 @@ static int klp_init_patch(struct klp_patch *patch) if (ret) return ret; +#ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY + if (patch->replace) { + pr_err("Replacing is not supported\n"); + return -EINVAL; + } +#endif if (patch->replace) { ret = klp_add_nops(patch); if (ret) -- 2.25.1

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[PATCH openEuler-1.0-LTS v2] net: bridge: multicast: fix UAF of net_bridge
by Ziyang Xuan 10 Jan '24

10 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8UZTK CVE: NA -------------------------------- Get a UAF problem as following: ======================================================== BUG: KASAN: use-after-free in run_timer_softirq+0x526/0x750 ... Call Trace: <IRQ> dump_stack+0x8b/0xbb print_address_description+0x6a/0x270 kasan_report+0x179/0x2c0 ? run_timer_softirq+0x526/0x750 run_timer_softirq+0x526/0x750 ? pvclock_clocksource_read+0xd1/0x180 ? init_timer_key+0xc0/0xc0 ? kvm_sched_clock_read+0xd/0x20 ? sched_clock+0x5/0x10 ? sched_clock_cpu+0x18/0x100 __do_softirq+0x119/0x3a2 irq_exit+0x153/0x160 smp_apic_timer_interrupt+0x92/0x1a0 apic_timer_interrupt+0xf/0x20 ... Allocated by task 11277: kasan_kmalloc+0xa0/0xd0 __kmalloc_node+0x190/0x2b0 kvmalloc_node+0x43/0x70 alloc_netdev_mqs+0x6a/0x660 rtnl_create_link+0x12a/0x420 rtnl_newlink+0x832/0xab0 rtnetlink_rcv_msg+0x424/0x500 netlink_rcv_skb+0xcd/0x200 netlink_unicast+0x2e9/0x3a0 netlink_sendmsg+0x4d7/0x670 sock_sendmsg+0x6d/0x80 ____sys_sendmsg+0x36a/0x3d0 ___sys_sendmsg+0x10a/0x190 __sys_sendmsg+0xd2/0x150 do_syscall_64+0x77/0x2c0 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Freed by task 11313: __kasan_slab_free+0x130/0x180 kfree+0x90/0x1a0 device_release+0x47/0xe0 kobject_release+0x98/0x200 netdev_run_todo+0x36d/0x490 rtnetlink_rcv_msg+0x42c/0x500 netlink_rcv_skb+0xcd/0x200 netlink_unicast+0x2e9/0x3a0 netlink_sendmsg+0x4d7/0x670 sock_sendmsg+0x6d/0x80 ____sys_sendmsg+0x36a/0x3d0 ___sys_sendmsg+0x10a/0x190 __sys_sendmsg+0xd2/0x150 do_syscall_64+0x77/0x2c0 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Under closed state of bridge netdev, try to activate ip6_own_query.timer of bridge netdev by br_multicast_set_querier(), and delete bridge netdev immediately afterwards. Because the timer will not be deleted during bridge netdev deleting process. When the timer is not activated before bridge netdev is released, UAF will be triggered to access the timer in run_timer_softirq(). Add br_multicast_stop() in br_multicast_dev_del() to delete the timer during bridge netdev deleting process as done in commit 613d61dbef8e ("net: bridge: vlan: add global and per-port multicast context"). Fixes: cc0fdd802859 ("bridge: separate querier and query timer into IGMP/IPv4 and MLD/IPv6 ones") Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> -- v2: - Remove "Offering" item. --- net/bridge/br_multicast.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 1dc32cbd20bb..d84abee1d24c 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -2068,6 +2068,7 @@ void br_multicast_dev_del(struct net_bridge *br) out: spin_unlock_bh(&br->multicast_lock); + br_multicast_stop(br); } int br_multicast_set_router(struct net_bridge *br, unsigned long val) -- 2.25.1

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[PATCH OLK-6.6 v2 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

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[PATCH OLK-6.6] pid_ns: Make pid_max per namespace
by Yi Yang 10 Jan '24

10 Jan '24

From: Li Zefan <lizefan(a)huawei.com> euler inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8TCPY ------------------------------------------------- The adjusted pid_max on the host also takes effect in the container. Move pid_max to pid_namespace to fix this problem. Signed-off-by: Pavel Emelyanov <xemul(a)parallels.com> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- include/linux/pid.h | 3 --- include/linux/pid_namespace.h | 1 + kernel/pid.c | 42 ++++++++++++++++++++++++++++++----- kernel/pid_namespace.c | 6 +++-- kernel/sysctl.c | 9 -------- kernel/trace/pid_list.c | 2 +- kernel/trace/trace.c | 2 +- kernel/trace/trace.h | 2 -- 8 files changed, 43 insertions(+), 24 deletions(-) diff --git a/include/linux/pid.h b/include/linux/pid.h index 653a527574c4..7f0f84a368b7 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -113,9 +113,6 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new, struct pid_namespace; extern struct pid_namespace init_pid_ns; -extern int pid_max; -extern int pid_max_min, pid_max_max; - /* * look up a PID in the hash table. Must be called with the tasklist_lock * or rcu_read_lock() held. diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index f9f9931e02d6..338012f75f6a 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -36,6 +36,7 @@ struct pid_namespace { #endif struct user_namespace *user_ns; struct ucounts *ucounts; + int pid_max; int reboot; /* group exit code if this pidns was rebooted */ struct ns_common ns; #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) diff --git a/kernel/pid.c b/kernel/pid.c index 383abde0c208..1cf72619d922 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -43,6 +43,7 @@ #include <linux/sched/task.h> #include <linux/idr.h> #include <net/sock.h> +#include <linux/kmemleak.h> #include <uapi/linux/pidfd.h> struct pid init_struct_pid = { @@ -59,12 +60,10 @@ struct pid init_struct_pid = { }, } }; -int pid_max = PID_MAX_DEFAULT; - #define RESERVED_PIDS 300 -int pid_max_min = RESERVED_PIDS + 1; -int pid_max_max = PID_MAX_LIMIT; +static int pid_max_min = RESERVED_PIDS + 1; +static int pid_max_max = PID_MAX_LIMIT; /* * PID-map pages start out as NULL, they get allocated upon @@ -80,6 +79,7 @@ struct pid_namespace init_pid_ns = { .child_reaper = &init_task, .user_ns = &init_user_ns, .ns.inum = PROC_PID_INIT_INO, + .pid_max = PID_MAX_DEFAULT, #ifdef CONFIG_PID_NS .ns.ops = &pidns_operations, #endif @@ -194,7 +194,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, tid = set_tid[ns->level - i]; retval = -EINVAL; - if (tid < 1 || tid >= pid_max) + if (tid < 1 || tid >= task_active_pid_ns(current)->pid_max) goto out_free; /* * Also fail if a PID != 1 is requested and @@ -234,7 +234,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, * a partially initialized PID (see below). */ nr = idr_alloc_cyclic(&tmp->idr, NULL, pid_min, - pid_max, GFP_ATOMIC); + tmp->pid_max, GFP_ATOMIC); } spin_unlock_irq(&pidmap_lock); idr_preload_end(); @@ -646,8 +646,34 @@ SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags) return fd; } +static int proc_dointvec_pidmax(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + struct ctl_table tmp; + + tmp = *table; + tmp.data = &task_active_pid_ns(current)->pid_max; + + return proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); +} + +static struct ctl_table pid_ctl_table[] = { + { + .procname = "pid_max", + .data = &init_pid_ns.pid_max, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_pidmax, + .extra1 = &pid_max_min, + .extra2 = &pid_max_max, + }, + {} +}; + void __init pid_idr_init(void) { + int pid_max = init_pid_ns.pid_max; + /* Verify no one has done anything silly: */ BUILD_BUG_ON(PID_MAX_LIMIT >= PIDNS_ADDING); @@ -658,6 +684,8 @@ void __init pid_idr_init(void) PIDS_PER_CPU_MIN * num_possible_cpus()); pr_info("pid_max: default: %u minimum: %u\n", pid_max, pid_max_min); + init_pid_ns.pid_max = pid_max; + idr_init(&init_pid_ns.idr); init_pid_ns.pid_cachep = kmem_cache_create("pid", @@ -665,6 +693,8 @@ void __init pid_idr_init(void) __alignof__(struct pid), SLAB_HWCACHE_ALIGN | SLAB_PANIC | SLAB_ACCOUNT, NULL); + + register_sysctl_init("kernel", pid_ctl_table); } static struct file *__pidfd_fget(struct task_struct *task, int fd) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 619972c78774..f66e4f866472 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -110,6 +110,7 @@ static struct pid_namespace *create_pid_namespace(struct user_namespace *user_ns ns->user_ns = get_user_ns(user_ns); ns->ucounts = ucounts; ns->pid_allocated = PIDNS_ADDING; + ns->pid_max = parent_pid_ns->pid_max; #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) ns->memfd_noexec_scope = pidns_memfd_noexec_scope(parent_pid_ns); #endif @@ -295,6 +296,8 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, next = idr_get_cursor(&pid_ns->idr) - 1; tmp.data = &next; + tmp.extra2 = &pid_ns->pid_max; + ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); if (!ret && write) idr_set_cursor(&pid_ns->idr, next + 1); @@ -302,7 +305,6 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, return ret; } -extern int pid_max; static struct ctl_table pid_ns_ctl_table[] = { { .procname = "ns_last_pid", @@ -310,7 +312,7 @@ static struct ctl_table pid_ns_ctl_table[] = { .mode = 0666, /* permissions are checked in the handler */ .proc_handler = pid_ns_ctl_handler, .extra1 = SYSCTL_ZERO, - .extra2 = &pid_max, + .extra2 = &init_pid_ns.pid_max, }, { } }; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 354a2d294f52..b000e733281e 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1809,15 +1809,6 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif - { - .procname = "pid_max", - .data = &pid_max, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &pid_max_min, - .extra2 = &pid_max_max, - }, { .procname = "panic_on_oops", .data = &panic_on_oops, diff --git a/kernel/trace/pid_list.c b/kernel/trace/pid_list.c index 95106d02b32d..2ff4259928ae 100644 --- a/kernel/trace/pid_list.c +++ b/kernel/trace/pid_list.c @@ -414,7 +414,7 @@ struct trace_pid_list *trace_pid_list_alloc(void) int i; /* According to linux/thread.h, pids can be no bigger that 30 bits */ - WARN_ON_ONCE(pid_max > (1 << 30)); + WARN_ON_ONCE(task_active_pid_ns(current)->pid_max > (1 << 30)); pid_list = kzalloc(sizeof(*pid_list), GFP_KERNEL); if (!pid_list) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index a40d6baf101f..2fac76f2a865 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5466,7 +5466,7 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled) if (mask == TRACE_ITER_RECORD_TGID) { if (!tgid_map) { - tgid_map_max = pid_max; + tgid_map_max = init_pid_ns.pid_max; map = kvcalloc(tgid_map_max + 1, sizeof(*tgid_map), GFP_KERNEL); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index d608f6128704..6077db8894fd 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -695,8 +695,6 @@ extern unsigned long tracing_thresh; /* PID filtering */ -extern int pid_max; - bool trace_find_filtered_pid(struct trace_pid_list *filtered_pids, pid_t search_pid); bool trace_ignore_this_task(struct trace_pid_list *filtered_pids, -- 2.25.1

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