rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=f92/1/0x4000000000000004 softirq=412387/412388 fqs=36 
	(t=10500 jiffies g=439929 q=1200)
rcu: rcu_preempt kthread starved for 10423 jiffies! g439929 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29264    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x934/0x1f90 kernel/sched/core.c:4081
 schedule+0xdc/0x2b0 kernel/sched/core.c:4155
 schedule_timeout+0x486/0xc50 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline]
 rcu_gp_kthread+0x9b2/0x18d0 kernel/rcu/tree.c:1821
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 1
CPU: 1 PID: 28363 Comm: syz-executor.5 Not tainted 5.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2827 [inline]
 rcu_sched_clock_irq.cold+0x509/0xc0d kernel/rcu/tree.c:2271
 update_process_times+0x2d/0x70 kernel/time/timer.c:1726
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199
Code: c0 e8 34 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 92 e4 be 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 27 3a 7c f9 65 8b 05 18 ce 2d 78 85 c0 74 06 41
RSP: 0018:ffffc90000da8dd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff132669d RBX: ffffffff863b8420 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffff888058672b98 RDI: ffff888058672b94
RBP: ffffc90000da8dd8 R08: ffff888058672300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ae927240
R13: ffff8880509ad818 R14: ffff8880ae927240 R15: dffffc0000000000
 expire_timers kernel/time/timer.c:1448 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6b1/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:tomoyo_domain_quota_is_ok+0x320/0x540 security/tomoyo/util.c:1070
Code: 00 31 db e8 02 66 10 fe 89 d9 44 89 ee 31 ff d3 fe 83 e6 01 41 89 f7 e8 6e 67 10 fe 45 85 ff 74 09 e8 e4 65 10 fe 41 83 c6 01 <e8> db 65 10 fe 8d 73 01 bf 10 00 00 00 83 c3 01 e8 0b 67 10 fe 83
RSP: 0018:ffffc90008b47810 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000002 RBX: 000000000000000b RCX: ffffffff83648fa2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90008b47850 R08: ffff888058672300 R09: fffff52001168f17
R10: fffff52001168f16 R11: 0000000000000000 R12: ffff8880a86cba00
R13: 0000000000000002 R14: 00000000000001d7 R15: 0000000000000000
 tomoyo_supervisor+0x2e8/0xef0 security/tomoyo/common.c:2089
 tomoyo_audit_net_log security/tomoyo/network.c:367 [inline]
 tomoyo_audit_inet_log+0x26a/0x340 security/tomoyo/network.c:393
 tomoyo_inet_entry security/tomoyo/network.c:484 [inline]
 tomoyo_check_inet_address security/tomoyo/network.c:532 [inline]
 tomoyo_check_inet_address+0x62a/0x730 security/tomoyo/network.c:501
 tomoyo_socket_bind_permission+0x26a/0x360 security/tomoyo/network.c:745
 tomoyo_socket_bind+0x26/0x30 security/tomoyo/tomoyo.c:471
 security_socket_bind+0x77/0xc0 security/security.c:1993
 __sys_bind+0x1ca/0x290 net/socket.c:1645
 __do_sys_bind net/socket.c:1660 [inline]
 __se_sys_bind net/socket.c:1658 [inline]
 __x64_sys_bind+0x73/0xb0 net/socket.c:1658
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45af49
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2ff1652c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49
RDX: 000000000000001c RSI: 00000000200001c0 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ff16536d4
R13: 00000000004c137e R14: 00000000004d60c8 R15: 00000000ffffffff