rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P25/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=7381, q=402 ncpus=2)
task:kworker/1:0     state:R  running task     stack:27008 pid:25    tgid:25    ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7086
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:89 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x105/0x1a0 mm/kasan/generic.c:189
Code: 75 0a 45 3a 11 b8 01 00 00 00 7c 0b 44 89 c2 e8 c1 ec ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 85 d2 74 4f 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 41 80 38 00 74 f2 eb b2 41 bc 08 00 00 00
RSP: 0018:ffffc900001f7aa8 EFLAGS: 00000246
RAX: fffffbfff20c42a2 RBX: fffffbfff20c42a3 RCX: ffffffff8195ba8c
RDX: fffffbfff20c42a3 RSI: 0000000000000008 RDI: ffffffff90621510
RBP: fffffbfff20c42a2 R08: 0000000000000000 R09: fffffbfff20c42a2
R10: ffffffff90621517 R11: 0000000000000003 R12: 0000000000000000
R13: 000000000003d90c R14: 0000000000000000 R15: 0000000000000000
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:570 [inline]
 cpu_online include/linux/cpumask.h:1116 [inline]
 trace_lock_acquire+0x3c/0x1f0 include/trace/events/lock.h:24
 lock_acquire+0x2f/0xb0 kernel/locking/lockdep.c:5822
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 gc_worker+0x242/0x16a0 net/netfilter/nf_conntrack_core.c:1532
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>