rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=156/1/0x4000000000000004 softirq=132232/132233 fqs=5242 (t=10500 jiffies g=190641 q=1541) NMI backtrace for cpu 1 CPU: 1 PID: 29213 Comm: modprobe 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:__sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:191 Code: 48 89 e5 48 8b 4d 08 e8 d8 fe ff ff 5d c3 66 0f 1f 44 00 00 55 89 f2 89 fe bf 05 00 00 00 48 89 e5 48 8b 4d 08 e8 ba fe ff ff <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 f2 48 89 fe bf 07 00 00 00 RSP: 0018:ffff8880ae909178 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000702 RBX: ffff8880a93582f8 RCX: ffffffff85c65e49 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff8880ae909178 R08: ffff8880a1c8c200 R09: 0000000000000000 R10: fffffbfff134af9f R11: ffff8880a1c8c200 R12: dffffc0000000000 R13: ffff8880a9358000 R14: ffff8880a9358390 R15: 0000000000000000 hhf_dequeue+0xb9/0xa20 net/sched/sch_hhf.c:434 dequeue_skb net/sched/sch_generic.c:263 [inline] qdisc_restart net/sched/sch_generic.c:366 [inline] __qdisc_run+0x1e5/0x1a00 net/sched/sch_generic.c:384 __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 arp_xmit_finish net/ipv4/arp.c:630 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] arp_xmit+0xdf/0x3f0 net/ipv4/arp.c:639 arp_send_dst.part.0+0x202/0x280 net/ipv4/arp.c:317 arp_send_dst net/ipv4/arp.c:390 [inline] arp_solicit+0x752/0x1380 net/ipv4/arp.c:389 neigh_probe+0xc6/0x110 net/core/neighbour.c:1012 __neigh_event_send+0x3e3/0x1760 net/core/neighbour.c:1172 neigh_event_send include/net/neighbour.h:445 [inline] neigh_resolve_output+0x5cf/0x970 net/core/neighbour.c:1474 neigh_output include/net/neighbour.h:511 [inline] ip_finish_output2+0x8a5/0x2570 net/ipv4/ip_output.c:228 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x5fc/0xb90 net/ipv4/ip_output.c:290 ip_finish_output+0x38/0x1f0 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x21f/0x640 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:436 [inline] ip_local_out+0xbb/0x190 net/ipv4/ip_output.c:125 __ip_queue_xmit+0x86f/0x1bd0 net/ipv4/ip_output.c:532 ip_queue_xmit+0x5a/0x70 include/net/ip.h:236 dccp_transmit_skb+0x966/0x1290 net/dccp/output.c:138 dccp_retransmit_skb+0x118/0x170 net/dccp/output.c:387 dccp_retransmit_timer net/dccp/timer.c:101 [inline] dccp_write_timer+0x43f/0x1420 net/dccp/timer.c:153 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline] RIP: 0010:ktime_get_coarse_real_ts64+0x11e/0x2b0 kernel/time/timekeeping.c:2166 Code: f4 d2 88 48 c1 e8 03 42 80 3c 30 00 0f 85 7a 01 00 00 48 83 3d b2 9f 6f 07 00 0f 84 0d 01 00 00 e8 a7 20 0f 00 4c 89 ef 57 9d <0f> 1f 44 00 00 e8 98 20 0f 00 44 8b 2d 81 5d 78 07 31 ff 44 89 ee RSP: 0018:ffff8880a967fc38 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a1c8c200 RBX: ffff8880a967fca0 RCX: 1ffffffff134b5de RDX: 0000000000000000 RSI: ffffffff816354a9 RDI: 0000000000000293 RBP: ffff8880a967fc70 R08: ffff8880a1c8c200 R09: fffffbfff134afa0 R10: fffffbfff134af9f R11: ffffffff89a57cff R12: fffffbfff11a5e89 R13: 0000000000000293 R14: dffffc0000000000 R15: 1ffffffff11a5e8b current_time+0x6b/0x140 fs/inode.c:2183 atime_needs_update+0x299/0x5f0 fs/inode.c:1716 touch_atime+0xce/0x2a0 fs/inode.c:1733 file_accessed include/linux/fs.h:2175 [inline] iterate_dir+0x36d/0x5e0 fs/readdir.c:56 __do_sys_getdents fs/readdir.c:231 [inline] __se_sys_getdents fs/readdir.c:212 [inline] __x64_sys_getdents+0x226/0x3c0 fs/readdir.c:212 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe57129e575 Code: 83 c7 13 e9 ed 53 fd ff 90 90 90 90 90 90 90 90 90 90 90 90 90 41 56 49 89 f0 48 63 ff b8 4e 00 00 00 41 55 41 54 55 53 0f 05 <48> 3d 00 f0 ff ff 77 58 4d 8d 24 00 49 89 c5 4d 39 e0 73 40 4c 89 RSP: 002b:00007ffd595b8350 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 000055e16ecd91a0 RCX: 00007fe57129e575 RDX: 0000000000008000 RSI: 000055e16ecd91d0 RDI: 0000000000000000 RBP: 00007ffd595b85f0 R08: 000055e16ecd91d0 R09: 00007fe5713199c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd595b84c8 R13: ffffffffffffffa8 R14: 0000000000000000 R15: 00055facc785c680