rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=6457, q=57)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953852-4294943349), jiffies_till_next_fqs=1, root ->qsmask 0x0
kworker/0:2     R  running task    26976  3025      2 0x80004008
Workqueue: rcu_gp process_srcu
Call Trace:
 <IRQ>
 sched_show_task+0x40f/0x560 kernel/sched/core.c:5954
 print_other_cpu_stall kernel/rcu/tree_stall.h:410 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:538 [inline]
 rcu_pending kernel/rcu/tree.c:2827 [inline]
 rcu_sched_clock_irq+0x1861/0x1ad0 kernel/rcu/tree.c:2271
 update_process_times+0x12d/0x180 kernel/time/timer.c:1726
 tick_sched_handle kernel/time/tick-sched.c:167 [inline]
 tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1514 [inline]
 __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1576
 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1638
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:mod_memcg_page_state+0x123/0x190 include/linux/memcontrol.h:653
Code: e8 f2 9e 69 00 48 83 3d 12 22 c2 07 00 74 70 e8 e3 27 2e 00 4c 89 ff 57 9d 0f 1f 44 00 00 e8 f4 c2 33 00 eb 43 e8 cd 27 2e 00 <eb> 3c e8 86 c0 33 00 48 c7 c0 28 96 0a 89 48 c1 e8 03 42 80 3c 20
RSP: 0018:ffffc9000821f908 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffffffff81487433 RBX: 0000000000000000 RCX: ffff88809ecea080
RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002608600
RBP: ffffc9000821f928 R08: 000000000003a768 R09: ffffed10139fdb4f
R10: ffffed10139fdb4f R11: 0000000000000000 R12: dffffc0000000000
R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff88809cfeda68
 free_thread_stack+0x168/0x590 kernel/fork.c:280
 release_task_stack kernel/fork.c:440 [inline]
 put_task_stack+0xa3/0x130 kernel/fork.c:451
 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081
 preempt_schedule_irq+0xc1/0x140 kernel/sched/core.c:4338
 retint_kernel+0x1b/0x2b
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:queue_delayed_work_on+0x186/0x1c0 kernel/workqueue.c:1673
Code: 48 c1 e8 03 80 3c 18 00 74 0c 48 c7 c7 28 96 0a 89 e8 ae 60 63 00 48 83 3d ce e3 bb 07 00 74 36 e8 9f e9 27 00 4c 89 ff 57 9d <0f> 1f 44 00 00 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d
RSP: 0018:ffffc9000821fb80 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffffffff814eb261 RBX: dffffc0000000000 RCX: ffff88809ecea080
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000286
RBP: ffffc9000821fbb8 R08: ffff88809ecea8d8 R09: fffffbfff13c8d22
R10: fffffbfff13c8d22 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff8a2af970 R14: 0000000000000001 R15: 0000000000000286
 queue_delayed_work include/linux/workqueue.h:509 [inline]
 srcu_reschedule+0xd7/0xf0 kernel/rcu/srcutree.c:1225
 process_srcu+0x566/0xd20 kernel/rcu/srcutree.c:1238
 process_one_work+0x7ef/0x10d0 kernel/workqueue.c:2264
 worker_thread+0xc01/0x1630 kernel/workqueue.c:2410
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
rcu: rcu_preempt kthread starved for 10536 jiffies! g6457 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    28992    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x9a0/0xcc0 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline]
 rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1821
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352