rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=46e4/1/0x4000000000000000 softirq=13542/13585 fqs=29
rcu: (detected by 1, t=10502 jiffies, g=8797, q=1936 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5207 Comm: udevd Not tainted 6.13.0-rc1-syzkaller-00230-g15bfb14727bc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x1ba/0x290 mm/kasan/generic.c:189
Code: fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a6 00 00 00 49 ff c3 48 ff cd 75 ee 5b 41 5c <41> 5e 41 5f 5d c3 cc cc cc cc 40 84 ed 75 5f f7 c5 00 ff 00 00 75
RSP: 0018:ffffc900000078d0 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817abe94
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942b8880
RBP: 0000000000000000 R08: ffffffff942b8887 R09: 1ffffffff2857110
R10: dffffc0000000000 R11: fffffbfff2857111 R12: ffff88806669c6c4
R13: ffff88806669bc00 R14: dffffc0000000001 R15: fffffbfff2857111
FS: 00007f6d2e0bdc80(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005600f2added8 CR3: 000000003165e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
__lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5196
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x17f/0x580 lib/debugobjects.c:818
debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
debug_activate kernel/time/hrtimer.c:469 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1076
__run_hrtimer kernel/time/hrtimer.c:1756 [inline]
__hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5853
Code: 2b 00 74 08 4c 89 f7 e8 5a ac 8f 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900033e7500 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200067ceac RCX: ffff88806669c6d8
RDX: dffffc0000000000 RSI: ffffffff8c0aa880 RDI: ffffffff8c5f63e0
RBP: ffffc900033e7658 R08: ffffffff942b8897 R09: 1ffffffff2857112
R10: dffffc0000000000 R11: fffffbfff2857113 R12: 1ffff9200067cea8
R13: dffffc0000000000 R14: ffffc900033e7560 R15: 0000000000000246
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
fast_dput+0x208/0x420 fs/dcache.c:783
dput+0xe8/0x2b0 fs/dcache.c:861
step_into+0x355/0x1080 fs/namei.c:1965
walk_component fs/namei.c:2118 [inline]
link_path_walk+0x7b7/0xea0 fs/namei.c:2477
path_openat+0x266/0x3590 fs/namei.c:3983
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6d2dd1a477
Code: 10 00 00 00 44 8b 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 82 69 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd6307eca8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005600f2a6bff0 RCX: 00007f6d2dd1a477
RDX: 0000000000090800 RSI: 00005600f2a7f380 RDI: 00000000ffffff9c
RBP: 00005600f2a9fa90 R08: 0000000000090800 R09: 00005600f2a7f380
R10: 0000000000000000 R11: 0000000000000287 R12: 00005600f2a7f380
R13: 00000000000000ff R14: 00005600f15031c4 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10383 jiffies! g8797 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:26264 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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:
CPU: 1 UID: 0 PID: 1141 Comm: kworker/u8:7 Not tainted 6.13.0-rc1-syzkaller-00230-g15bfb14727bc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f8/0x2c60 kernel/smp.c:884
Code: 89 e6 83 e6 01 31 ff e8 66 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 11 e5 0b 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 f5 e4 0b 00 eb e4 44
RSP: 0018:ffffc90003c2f6e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110170c8c89 RCX: ffff888026f9da00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003c2f8e0 R08: ffffffff81938cfa R09: 1ffffffff2857110
R10: dffffc0000000000 R11: fffffbfff2857111 R12: dffffc0000000000
R13: ffff8880b8646448 R14: ffff8880b873fac0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88fe875000 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x726/0xb30 arch/x86/kernel/alternative.c:2386
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xbc/0x260 mm/kfence/core.c:849
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244