rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P2/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=48061, q=527 ncpus=2)
task:kthreadd        state:R  running task     stack:26064 pid:2     tgid:2     ppid:0      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5373 [inline]
 __schedule+0x1142/0x5b60 kernel/sched/core.c:6760
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7082
 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:on_stack arch/x86/include/asm/stacktrace.h:56 [inline]
RIP: 0010:__unwind_start+0x455/0x7f0 arch/x86/kernel/unwind_orc.c:758
Code: 89 44 24 08 85 d2 0f 84 a0 fe ff ff 4d 89 fd 48 c1 e8 03 48 bd 00 00 00 00 00 fc ff df 49 c1 ed 03 49 89 c4 49 01 ed 49 01 ec <eb> 2a 4c 89 f7 e8 d1 da ff ff 4c 89 f0 48 c1 e8 03 0f b6 04 28 84
RSP: 0018:ffffc90000077560 EFLAGS: 00000286
RAX: 1ffff9200000eeb8 RBX: ffffc90000077640 RCX: ffffc90000078000
RDX: 0000000000000001 RSI: ffff888140aea440 RDI: ffffc90000077560
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc900000775b0 R11: 0000000000000001 R12: fffff5200000eeb8
R13: fffff5200000eeb7 R14: ffffc900000775b0 R15: ffffc900000775b8
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0x74/0x100 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 save_stack+0x162/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x8d/0x400 mm/page_owner.c:297
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 __put_partials+0x14c/0x170 mm/slub.c:3157
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4119 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 __kmalloc_cache_noprof+0x243/0x410 mm/slub.c:4324
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 set_kthread_struct+0xcb/0x380 kernel/kthread.c:126
 copy_process+0x342c/0x8d10 kernel/fork.c:2319
 kernel_clone+0xfd/0x960 kernel/fork.c:2803
 kernel_thread+0xc0/0x100 kernel/fork.c:2865
 create_kthread kernel/kthread.c:487 [inline]
 kthreadd+0x4ef/0x7d0 kernel/kthread.c:847
 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>