rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18365/2:b..l
rcu: (detected by 1, t=10502 jiffies, g=120229, q=961 ncpus=2)
task:syz.5.4267 state:R running task stack:25168 pid:18365 tgid:18320 ppid:18138 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:124 [inline]
RIP: 0010:lock_release+0x1af/0xa30 kernel/locking/lockdep.c:5776
Code: c7 84 24 b0 00 00 00 00 00 00 00 9c 8f 84 24 b0 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 a9 da 8a 00 48 8b 9c 24 b0 00 00 00 48 c7 c7 40 e2 0a 8c e8 f4 14 47 0a 65 ff 05 0d 96 92 7e 48 8d
RSP: 0018:ffffc90002daef60 EFLAGS: 00000246
RAX: ffffffff935f4750 RBX: 0000000000000246 RCX: ffffffff816ff360
RDX: 0000000000000000 RSI: ffffffff8c606f20 RDI: ffffffff8c606ee0
RBP: ffffc90002daf098 R08: ffffffff9017f86f R09: 1ffffffff202ff0d
R10: dffffc0000000000 R11: fffffbfff202ff0e R12: 1ffff920005b5df8
R13: ffffffff81ca5dce R14: ffffc90002daf010 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:336 [inline]
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
page_ref_add_unless include/linux/page_ref.h:239 [inline]
folio_ref_add_unless include/linux/page_ref.h:248 [inline]
folio_try_get+0x223/0x350 include/linux/page_ref.h:264
find_get_entry mm/filemap.c:2004 [inline]
find_lock_entries+0x2f6/0x10f0 mm/filemap.c:2091
shmem_undo_range+0x2d6/0x1df0 mm/shmem.c:1005
shmem_truncate_range mm/shmem.c:1132 [inline]
shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1260
evict+0x534/0x950 fs/inode.c:704
__dentry_kill+0x20d/0x630 fs/dcache.c:610
dput+0x19f/0x2b0 fs/dcache.c:852
__fput+0x5f8/0x8a0 fs/file_table.c:430
task_work_run+0x251/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd524b79e79
RSP: 002b:00007fd525986038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007fd524d16058 RCX: 00007fd524b79e79
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007fd524be793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd524d16058 R15: 00007ffe6d04db38
rcu: rcu_preempt kthread starved for 10358 jiffies! g120229 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 18419 Comm: syz.1.4300 Not tainted 6.11.0-rc5-syzkaller-00015-g3e9bff3bbe13 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:csd_lock_wait kernel/smp.c:312 [inline]
RIP: 0010:smp_call_function_many_cond+0x1865/0x29d0 kernel/smp.c:856
Code: 89 e6 83 e6 01 31 ff e8 39 18 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 e4 13 0c 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 c8 13 0c 00 eb e4 44
RSP: 0018:ffffc90002d4f3e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110172688f1 RCX: ffff88802ab58000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002d4f5c0 R08: ffffffff81877837 R09: 1ffffffff26e6908
R10: dffffc0000000000 R11: fffffbfff26e6909 R12: dffffc0000000000
R13: ffff8880b9344788 R14: ffff8880b923fb40 R15: 0000000000000001
FS: 000055558af5d500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c44e37d CR3: 0000000011e0a000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295
text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2522
__static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163
__static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147
tracepoint_update_call kernel/tracepoint.c:317 [inline]
tracepoint_remove_func kernel/tracepoint.c:441 [inline]
tracepoint_probe_unregister+0x8eb/0x990 kernel/tracepoint.c:551
bpf_raw_tp_link_release+0x45/0x70 kernel/bpf/syscall.c:3541
bpf_link_free+0xf7/0x250 kernel/bpf/syscall.c:3067
bpf_link_put_direct kernel/bpf/syscall.c:3107 [inline]
bpf_link_release+0x7b/0x90 kernel/bpf/syscall.c:3114
__fput+0x24c/0x8a0 fs/file_table.c:422
task_work_run+0x251/0x310 kernel/task_work.c:228
get_signal+0x15e6/0x1740 kernel/signal.c:2689
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe82cb79e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffdc56a318 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fe82cd17a80 RCX: 00007fe82cb79e79
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fe82cd17a80 R08: 00007fe82cd02000 R09: 00007fffdc56a5ff
R10: 00000000003ffa8c R11: 0000000000000246 R12: 000000000011dbc6
R13: 00007fffdc56a410 R14: 00007fffdc56a430 R15: ffffffffffffffff