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rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (1 GPs behind) idle=ac6/1/0x4000000000000004 softirq=172885/172888 fqs=213 rcu: (t=10500 jiffies g=200149 q=5382) rcu: rcu_preempt kthread starved for 10053 jiffies! g200149 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt I29008 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 schedule_timeout+0x4db/0xfc0 kernel/time/timer.c:1804 rcu_gp_kthread+0xd5c/0x2190 kernel/rcu/tree.c:2202 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 1 CPU: 1 PID: 4420 Comm: modprobe Not tainted 4.19.73 #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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 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+0x189/0x1d5 kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x5e3/0xd90 kernel/rcu/tree.c:2682 update_process_times+0x32/0x80 kernel/time/timer.c:1636 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:164 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x33b/0xdc0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data+0x0/0x70 kernel/kcov.c:121 Code: 83 fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 <65> 4c 8b 04 25 40 ee 01 00 65 8b 05 d0 8a 96 7e a9 00 01 1f 00 75 RSP: 0018:ffff8880ae907550 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff88806925e778 RCX: ffffffff858ebde6 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8880ae907558 R08: ffff8880933a05c0 R09: 0000000000000007 R10: ffff8880933a0f58 R11: 00000000ffbd3844 R12: dffffc0000000000 R13: ffff88806925e4c0 R14: 0000000000000001 R15: 0000000000000000 __list_del_entry include/linux/list.h:117 [inline] list_move_tail include/linux/list.h:182 [inline] hhf_dequeue+0x5b6/0xa00 net/sched/sch_hhf.c:438 dequeue_skb net/sched/sch_generic.c:277 [inline] qdisc_restart net/sched/sch_generic.c:380 [inline] __qdisc_run+0x1e7/0x1960 net/sched/sch_generic.c:398 __dev_xmit_skb net/core/dev.c:3501 [inline] __dev_queue_xmit+0x165c/0x2fe0 net/core/dev.c:3811 dev_queue_xmit+0x18/0x20 net/core/dev.c:3876 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip6_finish_output2+0x12fd/0x2550 net/ipv6/ip6_output.c:120 ip6_finish_output+0x574/0xbe0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x235/0x7c0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:447 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ndisc_send_skb+0xf3b/0x1460 net/ipv6/ndisc.c:491 ndisc_send_rs+0x134/0x6d0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3821 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1682 [inline] __run_timers kernel/time/timer.c:1650 [inline] run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1695 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 </IRQ> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3903 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 4a a6 1f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0018:ffff8880a87ff998 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff10e48c1 RBX: ffff8880933a05c0 RCX: 000000006f945079 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff8880a87ff9e0 R08: 000000000000181e R09: 0000000000000001 R10: ffff8880933a0e68 R11: ffffffff89e60570 R12: ffff8880a6fac358 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] lockref_get_not_dead+0x19/0x90 lib/lockref.c:208 legitimize_path.isra.0+0x87/0x1c0 fs/namei.c:625 unlazy_walk+0x113/0x560 fs/namei.c:677 complete_walk+0xcf/0x250 fs/namei.c:790 do_last fs/namei.c:3388 [inline] path_openat+0x639/0x45e0 fs/namei.c:3534 do_filp_open+0x1a1/0x280 fs/namei.c:3564 do_sys_open+0x3fe/0x550 fs/open.c:1088 __do_sys_open fs/open.c:1106 [inline] __se_sys_open fs/open.c:1101 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1101 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f86bc0f31a7 Code: c3 66 90 c7 05 fa af 20 00 16 00 00 00 b8 ff ff ff ff c3 f7 d8 89 05 ec af 20 00 83 c8 ff c3 90 90 90 90 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d cd af 20 00 31 d2 48 29 c2 89 RSP: 002b:00007fffb4fa99d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f86bc2fe1c8 RCX: 00007f86bc0f31a7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f86bc2f901d RBP: 00007fffb4fa9a50 R08: 00007fffb4fa9e4f R09: 0000000000000000 R10: 00007f86bc2f901d R11: 0000000000000246 R12: 0000000000000008 R13: 00007f86bc2fd040 R14: 0000000000000000 R15: 00007fffb4fa9e4f
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/09/18 18:45 | linux-4.19.y | db2d0b7c1dde | 46c0be24 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/18 15:43 | linux-4.19.y | db2d0b7c1dde | 1037b424 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/17 11:53 | linux-4.19.y | db2d0b7c1dde | 13dcda9b | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 23:41 | linux-4.19.y | db2d0b7c1dde | 51ca0454 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 20:40 | linux-4.19.y | db2d0b7c1dde | 51ca0454 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 09:06 | linux-4.19.y | db2d0b7c1dde | 55c50e70 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 07:50 | linux-4.19.y | db2d0b7c1dde | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 06:22 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 05:05 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 04:41 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/16 01:30 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/15 18:47 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/15 16:06 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/14 23:23 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/14 17:09 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/14 10:33 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/14 08:05 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/13 15:39 | linux-4.19.y | ee809c7e0895 | 32d59357 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/13 12:26 | linux-4.19.y | ee809c7e0895 | 40fa42bc | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/13 03:22 | linux-4.19.y | ee809c7e0895 | 40fa42bc | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/12 08:24 | linux-4.19.y | ee809c7e0895 | 0b7672ee | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/11 21:17 | linux-4.19.y | ee809c7e0895 | f4e53c10 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/11 20:57 | linux-4.19.y | ee809c7e0895 | f4e53c10 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/11 20:39 | linux-4.19.y | ee809c7e0895 | f4e53c10 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/11 11:58 | linux-4.19.y | ee809c7e0895 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/11 06:04 | linux-4.19.y | ee809c7e0895 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 11:34 | linux-4.19.y | ee809c7e0895 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 11:22 | linux-4.19.y | ee809c7e0895 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 10:25 | linux-4.19.y | ee809c7e0895 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 09:28 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 08:14 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/10 01:26 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/09 23:56 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/09 19:48 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/09 15:34 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/09 10:32 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/09 06:02 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/08 17:32 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/08 17:08 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/08 14:56 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/07 03:56 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/07 03:51 | linux-4.19.y | e7d2672c66e4 | a60cb4cd | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/06 20:22 | linux-4.19.y | 0fed55c248d9 | acb5b744 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/06 16:19 | linux-4.19.y | 0fed55c248d9 | acb5b744 | .config | console log | report | ci2-linux-4-19 | |||||
2019/09/06 13:42 | linux-4.19.y | 0fed55c248d9 | c16be727 | .config | console log | report | ci2-linux-4-19 |