rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 ticks this GP) idle=063/1/0x4000000000000000 softirq=9346/9346 fqs=5250 
	(detected by 0, t=10502 jiffies, g=11645, q=716)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3560 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__lock_acquire+0x1280/0x7c60 kernel/locking/lockdep.c:5008
Code: fc ff df 42 0f b6 04 00 84 c0 0f 85 f2 5b 00 00 83 3d 13 d2 af 14 00 0f 84 26 08 00 00 31 db 48 83 c3 40 48 89 d8 48 c1 e8 03 <42> 80 3c 00 00 74 12 48 89 df e8 21 1a 60 00 49 b8 00 00 00 00 00
RSP: 0018:ffffc90000dd0860 EFLAGS: 00000802
RAX: 1ffffffff1f286b0 RBX: ffffffff8f943580 RCX: ffffffff815c0b8f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffb70c8
RBP: ffffc90000dd0ab0 R08: dffffc0000000000 R09: fffffbfff1ff6e1a
R10: fffffbfff1ff6e1a R11: 1ffffffff1ff6e19 R12: 000000007aa55477
R13: ffff88807d565940 R14: 0000000029421dfb R15: ffff88807d566478
FS:  00007f6e33ecd880(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe3d56cf80 CR3: 000000007cf4a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x63/0x340 lib/debugobjects.c:749
 debug_hrtimer_deactivate kernel/time/hrtimer.c:415 [inline]
 debug_deactivate+0x1d/0x1c0 kernel/time/hrtimer.c:471
 __run_hrtimer kernel/time/hrtimer.c:1658 [inline]
 __hrtimer_run_queues+0x2db/0xc40 kernel/time/hrtimer.c:1754
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 5e 47 cc f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 26 d5 9f f7 65 8b 05 97 d4 50 76 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90002ebfc40 EFLAGS: 00000206
RAX: 5a42111c0a2f0300 RBX: 0000000000000a06 RCX: 5a42111c0a2f0300
RDX: dffffc0000000000 RSI: ffffffff8a0b15a0 RDI: 0000000000000001
RBP: ffffc90002ebfcd8 R08: dffffc0000000000 R09: fffffbfff2c6476a
R10: fffffbfff2c6476a R11: 1ffffffff2c64769 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffffff96323b48 R15: 1ffff920005d7f88
 debug_object_activate+0x2d2/0x480 lib/debugobjects.c:712
 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline]
 __call_rcu kernel/rcu/tree.c:2995 [inline]
 call_rcu+0xa7/0x930 kernel/rcu/tree.c:3091
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6e34029a67
Code: 44 00 00 48 83 ec 10 48 63 ff 45 31 c9 45 31 c0 6a 01 31 c9 e8 ca 19 f9 ff 48 83 c4 18 c3 0f 1f 44 00 00 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 61 b3 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffca87778b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000055e651f92560 RCX: 00007f6e34029a67
RDX: 000000000000cb91 RSI: 00007f6e34105b20 RDI: 000000000000000d
RBP: 000055e651f70230 R08: 0000000000004b50 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000206 R12: 000055e651f777b0
R13: 00000000000000ff R14: 000055e61516cbe0 R15: 00007ffca8777b30
 </TASK>