rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...0: (1 GPs behind) idle=8854/1/0x4000000000000000 softirq=6533/6534 fqs=2100
rcu: hardirqs softirqs csw/system
rcu: number: 0 0 0
rcu: cputime: 0 0 0 ==> 52550(ms)
rcu: (detected by 1, t=10506 jiffies, g=7477, q=284 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5097 Comm: syz-executor126 Not tainted 6.9.0-rc4-syzkaller-00164-gdbe0a7be2838 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
RIP: 0010:lock_release+0x185/0x9f0 kernel/locking/lockdep.c:5773
Code: 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 d4 c0 87 00 48 8b 9c 24 b0 00 00 00 fa <48> c7 c7 80 c5 ca 8b e8 9f 2a 0d 0a 65 ff 05 88 e7 8f 7e 48 8d 94
RSP: 0018:ffffc90000007a60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000046 RCX: ffffffff8172a210
RDX: 0000000000000000 RSI: ffffffff8c1f8540 RDI: ffffffff8c1f8500
RBP: ffffc90000007b90 R08: ffffffff8fa8e16f R09: 1ffffffff1f51c2d
R10: dffffc0000000000 R11: fffffbfff1f51c2e R12: 1ffff92000000f58
R13: ffffffff84b6c845 R14: ffffc90000007b10 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ce0997130 CR3: 000000000e134000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
debug_object_deactivate+0x2d5/0x390 lib/debugobjects.c:778
debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
__run_hrtimer kernel/time/hrtimer.c:1660 [inline]
__hrtimer_run_queues+0x30f/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 3e ea 6f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c3 2d db f5 65 8b 05 34 5a 79 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900035cf940 EFLAGS: 00000206
RAX: 4dd6f8d8e844c700 RBX: 1ffff920006b9f2c RCX: ffffffff8172edda
RDX: dffffc0000000000 RSI: ffffffff8bcab8a0 RDI: 0000000000000001
RBP: ffffc900035cf9d0 R08: ffffffff92f32587 R09: 1ffffffff25e64b0
R10: dffffc0000000000 R11: fffffbfff25e64b1 R12: dffffc0000000000
R13: 1ffff920006b9f28 R14: ffffc900035cf960 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
class_spinlock_irqsave_destructor include/linux/spinlock.h:574 [inline]
snd_timer_stop1+0x7e6/0x950 sound/core/timer.c:634
snd_timer_stop sound/core/timer.c:679 [inline]
snd_timer_close_locked+0x223/0x8d0 sound/core/timer.c:423
snd_timer_close sound/core/timer.c:464 [inline]
snd_timer_user_release+0x138/0x2e0 sound/core/timer.c:1468
__fput+0x429/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa1b/0x27e0 kernel/exit.c:878
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
__do_sys_exit_group kernel/exit.c:1038 [inline]
__se_sys_exit_group kernel/exit.c:1036 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1036
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4ce091bdb9
Code: Unable to access opcode bytes at 0x7f4ce091bd8f.
RSP: 002b:00007ffe7c0ef1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4ce091bdb9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f4ce09962b0 R08: ffffffffffffffb8 R09: 00000000000000a0
R10: 00000000000000a0 R11: 0000000000000246 R12: 00007f4ce09962b0
R13: 0000000000000000 R14: 00007f4ce0996d20 R15: 00007f4ce08ecf50
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.954 msecs