Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=e96/1/0x4000000000000002 softirq=6316/6316 fqs=0 
rcu: 	(detected by 1, t=10002 jiffies, g=1253, q=1261)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4288 Comm: syz-executor.2 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__lock_acquire.isra.10+0x0/0x680 kernel/locking/lockdep.c:3266
Code: 7f 03 5b 5d c3 e8 a0 3f 54 00 85 c0 74 f4 8b 05 86 78 8c 02 85 c0 0f 84 21 17 00 00 eb e4 66 66 2e 0f 1f 84 00 00 00 00 00 90 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 08 44 8b 25 f8 ef
RSP: 0018:ffff88013ba03df8 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffffffff839fb7a8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff839fb7c0
RBP: ffff88013ba03e58 R08: 0000000000000001 R09: 0000000000000000
R10: ffff880132f25e00 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f8ab3c7e480(0000) GS:ffff88013ba00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ff3c80818 CR3: 0000000133b22000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x54/0x70 kernel/locking/spinlock.c:152
 debug_object_activate lib/debugobjects.c:473 [inline]
 debug_object_activate+0x4e/0x1c0 lib/debugobjects.c:457
 debug_hrtimer_activate kernel/time/hrtimer.c:416 [inline]
 debug_activate kernel/time/hrtimer.c:465 [inline]
 enqueue_hrtimer+0x20/0xf0 kernel/time/hrtimer.c:954
 __run_hrtimer kernel/time/hrtimer.c:1413 [inline]
 __hrtimer_run_queues+0x313/0x390 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0xfc/0x210 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline]
 smp_apic_timer_interrupt+0x80/0x1e0 arch/x86/kernel/apic/apic.c:1054
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x36/0x70 kernel/locking/spinlock.c:184
Code: 18 53 48 8b 55 08 48 89 f3 be 01 00 00 00 e8 01 94 13 ff 4c 89 e7 e8 b9 ca 13 ff 48 83 3d f9 3d cc 00 00 74 2b 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 0b 26 11 ff 65 8b 05 04 6c 09 7e
RSP: 0018:ffffc90001c27d88 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: 0000000000000282 RCX: ffffc90001c27d44
RDX: 0000000000000003 RSI: 0000000000000003 RDI: 0000000000000282
RBP: ffffc90001c27d98 R08: 000000000000002e R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000002e R12: ffff880136f79730
R13: 0000000000000001 R14: ffff880136f79730 R15: 0000000000000282
 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
 snd_timer_stop1+0x4f/0x1f0 sound/core/timer.c:607
 snd_timer_stop+0x1b/0x20 sound/core/timer.c:658
 snd_timer_close_locked+0x5a/0x2c0 sound/core/timer.c:362
 snd_timer_close+0x28/0x40 sound/core/timer.c:424
 snd_timer_user_release+0x3c/0x70 sound/core/timer.c:1456
 __fput+0xa9/0x1e0 fs/file_table.c:278
 ____fput+0x9/0x10 fs/file_table.c:309
 task_work_run+0x8f/0xb0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0xd8/0xf0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x15f/0x170 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f8ab1aecd9a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007ffd79aefe50 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f8ab1aecd9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f8ab1c1d980 R08: 00007f8ab1a70000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000293 R12: 000000000000b4c2
R13: 000000000000b490 R14: 00007ffd79af0010 R15: 00007f8ab1aa4cb0
rcu: rcu_preempt kthread starved for 10002 jiffies! g1253 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I14504    10      2 0x80080000
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x2f4/0x8d0 kernel/sched/core.c:3473
 schedule+0x31/0x90 kernel/sched/core.c:3517
 schedule_timeout+0x206/0x4f0 kernel/time/timer.c:1804
 rcu_gp_kthread+0x53e/0x960 kernel/rcu/tree.c:2194
 kthread+0x11c/0x140 kernel/kthread.c:246
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:413