rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (1 GPs behind) idle=b22/1/0x4000000000000004 softirq=330322/330323 fqs=0 (t=29999 jiffies g=364173 q=120) NMI backtrace for cpu 1 CPU: 1 PID: 13669 Comm: kworker/1:2 Not tainted 5.4.0-rc5+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp process_srcu 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:2795 [inline] rcu_sched_clock_irq.cold+0x4fd/0xc12 kernel/rcu/tree.c:2244 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:1299 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1576 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1638 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:830 RIP: 0010:ffs arch/x86/include/asm/bitops.h:297 [inline] RIP: 0010:__do_softirq+0x227/0x98c kernel/softirq.c:280 Code: c7 c0 f0 1d f3 88 48 c1 e8 03 42 80 3c 30 00 0f 85 b1 06 00 00 48 83 3d d6 1b 73 01 00 0f 84 d6 05 00 00 fb 66 0f 1f 44 00 00 ff ff ff ff 48 c7 45 c8 00 91 e0 88 0f bc 45 d4 83 c0 01 89 45 RSP: 0018:ffff8880ae909f20 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11e63be RBX: ffff8880a13ec0c0 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880a13ec954 RBP: ffff8880ae909fa0 R08: 1ffffffff14eff39 R09: fffffbfff14eff3a R10: fffffbfff14eff39 R11: ffffffff8a77f9cf R12: 0000000000000028 R13: 0000000000000028 R14: dffffc0000000000 R15: 0000000000000000 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] do_IRQ+0xe3/0x280 arch/x86/kernel/irq.c:263 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:607 RIP: 0010:srcu_readers_unlock_idx kernel/rcu/srcutree.c:270 [inline] RIP: 0010:srcu_readers_active_idx_check kernel/rcu/srcutree.c:285 [inline] RIP: 0010:try_check_zero+0x56/0x330 kernel/rcu/srcutree.c:701 Code: 41 83 c5 03 4c 01 f0 48 83 ec 30 89 75 d4 89 55 d0 48 89 45 c8 4d 8d bc 24 48 04 00 00 31 db 41 b9 ff ff ff ff eb 65 4c 89 f8 <48> c1 e8 03 42 80 3c 30 00 0f 85 0e 02 00 00 49 63 c1 49 8b 94 24 RSP: 0018:ffff888013b3fbf8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffd7 RAX: ffffffff89052c08 RBX: 0000000000000000 RCX: ffffffff8343897b RDX: 0000000000000000 RSI: ffffffff83438a07 RDI: 0000000000000007 RBP: ffff888013b3fc50 R08: ffff8880a13ec0c0 R09: 0000000000000000 R10: 0000000000000040 R11: ffffffff89052b67 R12: ffffffff890527c0 R13: 0000000000000007 R14: dffffc0000000000 R15: ffffffff89052c08 srcu_advance_state kernel/rcu/srcutree.c:1142 [inline] process_srcu+0x329/0xe10 kernel/rcu/srcutree.c:1237 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1