rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 ticks this GP) idle=736/1/0x4000000000000002 softirq=465046/465046 fqs=0
(t=11162 jiffies g=619325 q=111)
rcu: rcu_preempt kthread starved for 11162 jiffies! g619325 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt R running task 29256 10 2 0x80004000
Call Trace:
context_switch kernel/sched/core.c:3254 [inline]
__schedule+0x755/0x1580 kernel/sched/core.c:3880
schedule+0xa8/0x270 kernel/sched/core.c:3944
schedule_timeout+0x486/0xc50 kernel/time/timer.c:1807
rcu_gp_fqs_loop kernel/rcu/tree.c:1611 [inline]
rcu_gp_kthread+0x9b2/0x18c0 kernel/rcu/tree.c:1768
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 1
CPU: 1 PID: 23280 Comm: kworker/1:0 Not tainted 5.3.0-rc2+ #109
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: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:1068 [inline]
smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1093
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:828
RIP: 0010:preempt_schedule_irq+0xab/0x160 kernel/sched/core.c:4128
Code: 00 00 e8 88 50 12 fa e8 c3 85 3b fa 4c 89 f0 48 c1 e8 03 80 3c 18 00 75 7d 48 83 3d 7e 5c 96 01 00 74 6f fb 66 0f 1f 44 00 00 01 00 00 00 e8 fb db ff ff 48 c7 c0 18 f2 d2 88 48 c1 e8 03 80
RSP: 0018:ffff8880794cfab8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a5e44 RBX: dffffc0000000000 RCX: 1ffffffff134b3e6
RDX: 0000000000000000 RSI: ffffffff81781bae RDI: ffffffff873c958d
RBP: ffff8880794cfad8 R08: ffff8880926ca1c0 R09: ffffed1015d26add
R10: ffffed1015d26adc R11: ffff8880ae9356e3 R12: ffffed10124d9438
R13: ffff8880926ca1c0 R14: ffffffff88d2f220 R15: 0000000000000000
retint_kernel+0x1b/0x2b
RIP: 0010:preempt_count_sub+0x63/0x150 kernel/sched/core.c:3651
Code: 3c 09 85 c9 75 1b 65 8b 05 72 2e b3 7e 89 c2 81 e2 ff ff ff 7f 39 d3 7f 14 81 fb fe 00 00 00 76 64 f7 db 65 01 1d 55 2e b3 7e <5b> 5d c3 e8 95 6b eb 01 85 c0 74 f4 48 c7 c0 30 9f a5 89 48 ba 00
RSP: 0018:ffff8880794cfb98 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff02
RAX: 0000000080000001 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff833e3bcc RDI: 0000000000000001
RBP: ffff8880794cfba0 R08: ffff8880926ca1c0 R09: 0000000000000040
R10: 0000000000000040 R11: ffffffff88e53b27 R12: 00000674f7057eb2
R13: 0000000000000001 R14: 0000000000002ced R15: 00000000000070b3
delay_tsc+0x6b/0xc0 arch/x86/lib/delay.c:66
__delay arch/x86/lib/delay.c:161 [inline]
__const_udelay+0x59/0x80 arch/x86/lib/delay.c:175
try_check_zero+0x201/0x330 kernel/rcu/srcutree.c:705
srcu_advance_state kernel/rcu/srcutree.c:1142 [inline]
process_srcu+0x329/0xe20 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