rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4389/1:b..l P4454/1:b..l
(detected by 0, t=10502 jiffies, g=20433, q=197 ncpus=2)
task:udevd state:R running task stack:23872 pid:4454 ppid:3623 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:rcu_read_lock_sched_held+0xd9/0xf0 kernel/rcu/update.c:125
Code: 89 d8 48 8d 65 e8 5b 41 5e 41 5f 5d c3 65 8b 05 95 75 98 7e bb 01 00 00 00 a9 ff ff ff 7f 75 c0 48 c7 44 24 20 00 00 00 00 9c <8f> 44 24 20 31 db f6 44 24 21 02 0f 94 c3 eb a6 e8 02 37 a5 08 66
RSP: 0018:ffffc90004a578b8 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000001 RCX: 834d99e030cc9a00
RDX: 0000000000000000 RSI: ffffffff8a6c1180 RDI: ffffffff8abf1260
RBP: ffffc90004a57948 R08: dffffc0000000000 R09: fffffbfff2117049
R10: fffffbfff2117049 R11: 1ffffffff2117048 R12: 0000000000000000
R13: 0000000000000050 R14: 1ffff9200094af18 R15: dffffc0000000000
task_css include/linux/cgroup.h:509 [inline]
mem_cgroup_from_task+0x49/0x110 mm/memcontrol.c:985
get_obj_cgroup_from_current+0x163/0x280 mm/memcontrol.c:3025
memcg_slab_pre_alloc_hook mm/slab.h:485 [inline]
slab_pre_alloc_hook+0x91/0x310 mm/slab.h:715
slab_alloc_node mm/slub.c:3318 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x56/0x2f0 mm/slub.c:3422
anon_vma_chain_alloc mm/rmap.c:141 [inline]
anon_vma_clone+0xb4/0x4e0 mm/rmap.c:287
__split_vma+0x1c5/0x500 mm/mmap.c:2366
do_mas_align_munmap+0x762/0x1220 mm/mmap.c:2489
do_mas_munmap+0x240/0x2b0 mm/mmap.c:2638
__vm_munmap+0x18d/0x290 mm/mmap.c:2924
__do_sys_munmap mm/mmap.c:2949 [inline]
__se_sys_munmap mm/mmap.c:2946 [inline]
__x64_sys_munmap+0x5c/0x70 mm/mmap.c:2946
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3ac6f1e097
RSP: 002b:00007ffcbe8aa0a8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 000055f5b1e8ad30 RCX: 00007f3ac6f1e097
RDX: 000055f5b1e79838 RSI: 0000000000000200 RDI: 00007f3ac7690000
RBP: 000055f5b1e85fa0 R08: 0000000000000040 R09: 0000000000000003
R10: 000055f5b1e85f90 R11: 0000000000000246 R12: 00007f3ac77d07c0
R13: 00007f3ac77d239c R14: 0000000000000022 R15: 0000000000000001
task:syz-executor state:R running task stack:22080 pid:4389 ppid:4370 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__is_kernel_text kernel/extable.c:95 [inline]
RIP: 0010:is_kernel_text include/linux/kallsyms.h:29 [inline]
RIP: 0010:core_kernel_text kernel/extable.c:68 [inline]
RIP: 0010:kernel_text_address+0x3/0xd0 kernel/extable.c:99
Code: 85 c0 0f 95 c0 48 81 fb 00 f0 44 8f 0f 93 c1 48 81 fb 95 63 59 8f 0f 92 c2 20 ca 08 c2 0f b6 c2 5b c3 0f 1f 44 00 00 55 41 56 <53> 48 81 ff 00 00 00 81 0f 93 c0 48 81 ff e8 76 40 8a 0f 92 c1 bd
RSP: 0018:ffffc9000484f280 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff816dca01 RCX: 0000000080000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff816dca01
RBP: ffffc9000484f350 R08: dffffc0000000000 R09: ffffc9000484f318
R10: fffff52000909e65 R11: 1ffff92000909e63 R12: ffff88802cef9dc0
R13: 1ffff92000909e84 R14: dffffc0000000000 R15: 1ffff92000909e62
__kernel_text_address+0x9/0x30 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
save_stack+0xf3/0x1e0 mm/page_owner.c:127
__reset_page_owner+0x51/0x1a0 mm/page_owner.c:148
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1459 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3525
release_pages+0x1f92/0x2200 mm/swap.c:1035
__pagevec_release+0x6d/0xe0 mm/swap.c:1055
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
shmem_undo_range+0x75b/0x2050 mm/shmem.c:946
shmem_truncate_range mm/shmem.c:1062 [inline]
shmem_evict_inode+0x248/0xa40 mm/shmem.c:1171
evict+0x485/0x870 fs/inode.c:705
__dentry_kill+0x431/0x650 fs/dcache.c:611
dentry_kill+0xb8/0x290 fs/dcache.c:-1
dput+0xfa/0x1d0 fs/dcache.c:918
__fput+0x5e0/0x920 fs/file_table.c:328
task_work_run+0x1ca/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f857018fc97
RSP: 002b:00007ffd9d5b3b08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f857021089d RCX: 00007f857018fc97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9d5b3bc0
RBP: 00007ffd9d5b3bc0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd9d5b4c50
R13: 00007f857021089d R14: 000000000002870e R15: 00007ffd9d5b4c90
rcu: rcu_preempt kthread starved for 10587 jiffies! g20433 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27424 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:735
sched: RT throttling activated