rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=13a/1/0x4000000000000000 softirq=157977/157979 fqs=5 
	(detected by 0, t=10502 jiffies, g=249945, q=2891)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3902 Comm: systemd-udevd Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_held_lock+0xd1/0x110 kernel/locking/lockdep.c:4550
Code: 38 d0 7f 04 84 c0 75 4e 41 32 5c 24 21 83 e3 60 74 94 45 31 e4 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 02 <4c> 89 f0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 11 5b 45 89 3e 4c
RSP: 0018:ffffc90000da8c68 EFLAGS: 00000802
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffc90000da8cf0
RDX: 0000000000000004 RSI: ffff888020980b00 RDI: ffff88809ea86df8
RBP: 1ffff920001b5196 R08: 0000000000000001 R09: ffff88809ea86dc8
R10: fffffbfff1562c09 R11: 0000000000000000 R12: ffff88809ea86df8
R13: ffff888020980b00 R14: ffffc90000da8cf0 R15: 0000000000000001
FS:  00007f12bff148c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c001dee000 CR3: 000000009e8f2000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __lock_release kernel/locking/lockdep.c:4713 [inline]
 lock_release+0x23b/0x8e0 kernel/locking/lockdep.c:5023
 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:394 [inline]
 advance_sched+0x469/0x990 net/sched/sch_taprio.c:748
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x6a9/0xfc0 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x60 kernel/kcov.c:197
Code: 5d be 03 00 00 00 e9 d6 80 24 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 48 8b 14 25 00 ff 01 00 <65> 8b 05 b0 bc 8d 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc90004f17868 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 0000000000000006 RCX: ffffffff8363cbba
RDX: ffff88809ea86500 RSI: ffff88809ea86500 RDI: 0000000000000001
RBP: ffff8880950cd980 R08: 0000000000000001 R09: ffffffff8cb07047
R10: 0000000000000010 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000371 R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x2f1/0x550 security/tomoyo/util.c:1071
 tomoyo_supervisor+0x2d4/0xeb0 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x25c/0x360 security/tomoyo/file.c:573
 tomoyo_path_perm+0x2e7/0x3f0 security/tomoyo/file.c:838
 security_inode_getattr+0xcf/0x140 security/security.c:1278
 vfs_getattr fs/stat.c:121 [inline]
 vfs_statx+0x170/0x390 fs/stat.c:206
 vfs_lstat include/linux/fs.h:3146 [inline]
 __do_sys_newlstat+0x91/0x110 fs/stat.c:374
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f12bed87335
Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89
RSP: 002b:00007fffe890f178 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 000055a056a42a50 RCX: 00007f12bed87335
RDX: 00007fffe890f1b0 RSI: 00007fffe890f1b0 RDI: 000055a056a41a50
RBP: 00007fffe890f270 R08: 0000000000000003 R09: 0000000000001010
R10: 0000000000016550 R11: 0000000000000246 R12: 000055a056a41a50
R13: 000055a056a41a73 R14: 000055a056a37fe1 R15: 000055a056a37fe3
rcu: rcu_preempt kthread starved for 10377 jiffies! g249945 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I29080    10      2 0x00004000
Call Trace:
 context_switch kernel/sched/core.c:3778 [inline]
 __schedule+0x8e5/0x21e0 kernel/sched/core.c:4527
 schedule+0xd0/0x2a0 kernel/sched/core.c:4602
 schedule_timeout+0x148/0x250 kernel/time/timer.c:1879
 rcu_gp_fqs_loop kernel/rcu/tree.c:1887 [inline]
 rcu_gp_kthread+0xae5/0x1b50 kernel/rcu/tree.c:2057
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294