rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10499 ticks this GP) idle=f62/1/0x4000000000000004 softirq=39048/39048 fqs=5227 (t=10500 jiffies g=57573 q=927) NMI backtrace for cpu 1 CPU: 1 PID: 18838 Comm: udevd Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 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:2736 [inline] rcu_sched_clock_irq.cold+0x4dd/0xc13 kernel/rcu/tree.c:2183 update_process_times+0x32/0x80 kernel/time/timer.c:1639 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1296 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1106 [inline] smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1131 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:list_empty include/linux/list.h:268 [inline] RIP: 0010:hhf_dequeue+0x506/0xa20 net/sched/sch_hhf.c:429 Code: 00 0f 85 35 04 00 00 4c 89 f8 4c 89 7b 08 48 c1 e8 03 42 80 3c 20 00 0f 85 12 04 00 00 49 89 1f e9 4b fb ff ff e8 4a 95 aa fb <48> 8b 45 b8 4c 8b 75 c8 42 80 3c 20 00 0f 85 3a 04 00 00 49 8b 85 RSP: 0018:ffff8880ae909488 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff88805fd284c0 RBX: ffff88808fb53538 RCX: ffffffff85c7e179 RDX: 0000000000000100 RSI: ffffffff85c7e006 RDI: ffff88808fb53540 RBP: ffff8880ae9094d8 R08: ffff88805fd284c0 R09: fffffbfff14e9555 R10: ffff88805fd28e90 R11: ffff88805fd284c0 R12: dffffc0000000000 R13: ffff88808fb53240 R14: ffff88808fb535c0 R15: ffff88808fb535d0 dequeue_skb net/sched/sch_generic.c:258 [inline] qdisc_restart net/sched/sch_generic.c:361 [inline] __qdisc_run+0x1e7/0x19d0 net/sched/sch_generic.c:379 __dev_xmit_skb net/core/dev.c:3533 [inline] __dev_queue_xmit+0x16f1/0x3650 net/core/dev.c:3838 dev_queue_xmit+0x18/0x20 net/core/dev.c:3902 neigh_resolve_output net/core/neighbour.c:1490 [inline] neigh_resolve_output+0x5a5/0x970 net/core/neighbour.c:1470 neigh_output include/net/neighbour.h:511 [inline] ip6_finish_output2+0x1034/0x2520 net/ipv6/ip6_output.c:116 __ip6_finish_output+0x444/0xa50 net/ipv6/ip6_output.c:142 ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x235/0x7c0 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0xf29/0x1450 net/ipv6/ndisc.c:505 ndisc_send_rs+0x134/0x6d0 net/ipv6/ndisc.c:699 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x697/0x17a0 kernel/time/timer.c:1698 __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:537 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1133 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:tomoyo_domain_quota_is_ok+0x312/0x540 security/tomoyo/util.c:1069 Code: 5c 41 5d 41 5e 41 5f 5d c3 41 bd 01 00 00 00 31 db e8 22 3a 6c fe 89 d9 44 89 ee 31 ff d3 fe 83 e6 01 41 89 f7 e8 8e 3b 6c fe <45> 85 ff 74 09 e8 04 3a 6c fe 41 83 c6 01 e8 fb 39 6c fe 8d 73 01 RSP: 0018:ffff888063d377e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffffffff83063b42 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff888063d37820 R08: ffff88805fd284c0 R09: ffffed100c7a6f11 R10: ffffed100c7a6f10 R11: 0000000000000000 R12: ffff8880a7efcd80 R13: 0000000000000022 R14: 00000000000002be R15: 0000000000000000 tomoyo_supervisor+0x2e8/0xef0 security/tomoyo/common.c:2087 tomoyo_audit_path2_log security/tomoyo/file.c:182 [inline] tomoyo_path2_perm+0x471/0x670 security/tomoyo/file.c:943 tomoyo_path_rename+0xee/0x150 security/tomoyo/tomoyo.c:285 security_path_rename+0x20c/0x300 security/security.c:1039 do_renameat2+0x7b8/0xc40 fs/namei.c:4623 __do_sys_rename fs/namei.c:4673 [inline] __se_sys_rename fs/namei.c:4671 [inline] __x64_sys_rename+0x61/0x80 fs/namei.c:4671 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f67dd51a527 Code: 32 00 64 83 38 15 74 07 b8 ff ff ff ff 5b c3 48 89 df e8 1c c1 07 00 85 c0 75 ed 31 c0 eb d3 90 90 90 90 b8 52 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 f8 32 00 31 d2 48 29 c2 64 RSP: 002b:00007ffc82873d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67dd51a527 RDX: 00007f67dd84be98 RSI: 00007ffc82873d50 RDI: 00007ffc82874150 RBP: 0000000000ebffd0 R08: 00007f67dde8d7a0 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000eb62a0 R13: 0000000000eb0250 R14: 00007ffc82873d50 R15: 0000000000000001