rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (10500 ticks this GP) idle=132/1/0x4000000000000004 softirq=34574/34574 fqs=0 rcu: (t=10500 jiffies g=40377 q=1085) rcu: rcu_preempt kthread starved for 10500 jiffies! g40377 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt I23080 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x9de/0x1ed0 kernel/sched/core.c:3472 schedule+0xef/0x370 kernel/sched/core.c:3516 schedule_timeout+0x140/0x260 kernel/time/timer.c:1803 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1948 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2105 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 NMI backtrace for cpu 0 CPU: 0 PID: 3836 Comm: udevd Not tainted 4.20.0-rc7-next-20181224 #188 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+0x1d3/0x2c6 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1c2/0x22c 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+0x16f/0x1bc kernel/rcu/tree.c:1211 print_cpu_stall.cold.70+0x218/0x40a kernel/rcu/tree.c:1348 check_cpu_stall kernel/rcu/tree.c:1422 [inline] rcu_pending kernel/rcu/tree.c:3018 [inline] rcu_check_callbacks+0xac1/0x1410 kernel/rcu/tree.c:2521 update_process_times+0x2d/0x70 kernel/time/timer.c:1635 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:161 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1271 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1060 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x50 kernel/kcov.c:100 Code: d0 72 1b 49 83 c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 48 89 e5 48 8b 75 08 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 f8 fc 7f 7e 81 e2 00 01 1f 00 RSP: 0018:ffff8881dac06c68 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000302 RBX: ffff8881b726d2c8 RCX: ffffffff86c22fa5 RDX: 0000000000000002 RSI: ffffffff86c22fdd RDI: 0000000000000001 RBP: ffff8881dac06c68 R08: ffff8881c2bba240 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8881c2bba240 R12: ffff8881dac07458 R13: 0000000000000002 R14: 0000000000000002 R15: 000000000000003f __xfrm4_selector_match net/xfrm/xfrm_policy.c:195 [inline] xfrm_selector_match+0x82d/0xf90 net/xfrm/xfrm_policy.c:219 xfrm_policy_match+0x1ef/0x2d0 net/xfrm/xfrm_policy.c:1894 __xfrm_policy_eval_candidates net/xfrm/xfrm_policy.c:2022 [inline] xfrm_policy_eval_candidates net/xfrm/xfrm_policy.c:2053 [inline] xfrm_policy_lookup_bytype+0xa1a/0xe70 net/xfrm/xfrm_policy.c:2113 xfrm_policy_lookup+0x7e/0x80 net/xfrm/xfrm_policy.c:2145 xfrm_bundle_lookup net/xfrm/xfrm_policy.c:2939 [inline] xfrm_lookup_with_ifid+0x972/0x2b80 net/xfrm/xfrm_policy.c:3080 xfrm_lookup net/xfrm/xfrm_policy.c:3172 [inline] xfrm_lookup_route+0x3c/0x1f0 net/xfrm/xfrm_policy.c:3183 ip_route_output_flow+0xb1/0xc0 net/ipv4/route.c:2582 ip_route_output_ports include/net/route.h:161 [inline] igmpv3_newpack+0x541/0x1430 net/ipv4/igmp.c:362 add_grec+0x8e8/0x1350 net/ipv4/igmp.c:526 igmpv3_send_cr net/ipv4/igmp.c:652 [inline] igmp_ifc_timer_expire+0x752/0xbe0 net/ipv4/igmp.c:793 call_timer_fn+0x272/0x920 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1362 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1681 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:__read_once_size include/linux/compiler.h:191 [inline] RIP: 0010:list_empty include/linux/list.h:226 [inline] RIP: 0010:waitqueue_active include/linux/wait.h:126 [inline] RIP: 0010:__wake_up_bit+0x164/0x290 kernel/sched/wait_bit.c:124 Code: 38 41 89 54 24 88 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 16 01 00 00 4d 8d 6c 24 c0 49 8b 46 38 <48> ba 00 00 00 00 00 fc ff df 4c 89 ee 48 c1 ee 03 80 3c 16 00 0f RSP: 0018:ffff8881c2bc7418 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8960d5c0 RBX: 1ffff11038578e84 RCX: ffff8881c2bc7440 RDX: 1ffffffff12c1ab8 RSI: 1ffff11038578e89 RDI: ffff8881c2bc7448 RBP: ffff8881c2bc74e8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1038578e8e R11: 0000000000000003 R12: ffff8881c2bc74c0 R13: ffff8881c2bc7480 R14: ffffffff8960d588 R15: ffffffff8960d5c0 wake_up_bit+0x3d/0x40 kernel/sched/wait_bit.c:148 evict+0x592/0x980 fs/inode.c:571 iput_final fs/inode.c:1550 [inline] iput+0x679/0xa90 fs/inode.c:1576 dentry_unlink_inode+0x461/0x5e0 fs/dcache.c:360 __dentry_kill+0x44c/0x7a0 fs/dcache.c:552 dentry_kill+0xc9/0x5a0 fs/dcache.c:671 dput.part.25+0x660/0x790 fs/dcache.c:832 dput+0x15/0x20 fs/dcache.c:814 do_renameat2+0xa06/0x1180 fs/namei.c:4630 __do_sys_rename fs/namei.c:4672 [inline] __se_sys_rename fs/namei.c:4670 [inline] __x64_sys_rename+0x5e/0x80 fs/namei.c:4670 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7efe29e6e527 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:00007fff57d18418 EFLAGS: 00000206 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 0000000000dac3f0 RCX: 00007efe29e6e527 RDX: 0000000000000000 RSI: 00007fff57d18860 RDI: 00007fff57d18460 RBP: 00007fff57d18ca0 R08: 00000000004207f1 R09: 00007efe29f3ee00 R10: 0000000000000022 R11: 0000000000000206 R12: 0000000000000000 R13: 00007fff57d18458 R14: 0000000000dbd670 R15: 0000000000db2ea0