rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P22165/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=209161, q=179 ncpus=1)
task:udevd           state:R  running task     stack:23176 pid:22165 ppid:5142   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011
 irqentry_exit+0x67/0x70 kernel/entry/common.c:438
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__page_table_check_zero+0x173/0x4b0 mm/page_table_check.c:153
Code: 89 f7 bf 40 00 00 00 e8 8b 91 9c ff 31 db 49 c7 c5 40 ca 35 97 49 c1 ed 03 eb 0a 4c 03 35 35 e3 4a 15 48 ff c3 83 7c 24 04 3f <0f> 87 c0 00 00 00 e8 b2 8d 9c ff 49 89 dc 44 89 f9 49 d3 ec 31 ff
RSP: 0018:ffffc9000b4bf5b8 EFLAGS: 00000293
RAX: ffffffff81eae7bc RBX: 0000000000000003 RCX: ffff88805acdbc00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801b4f6b54
RBP: dffffc0000000000 R08: ffff88801b4f6b57 R09: 1ffff1100369ed6a
R10: dffffc0000000000 R11: ffffed100369ed6b R12: ffff88801b4f6b54
R13: 1ffffffff2e6b948 R14: ffff88801b4f6b58 R15: 0000000000000003
 page_table_check_free include/linux/page_table_check.h:41 [inline]
 free_pages_prepare mm/page_alloc.c:1183 [inline]
 free_unref_page_prepare+0x7e6/0x8f0 mm/page_alloc.c:2366
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2459
 discard_slab mm/slub.c:2127 [inline]
 __unfreeze_partials+0x1cf/0x210 mm/slub.c:2667
 put_cpu_partial+0x17c/0x250 mm/slub.c:2743
 __slab_free+0x319/0x400 mm/slub.c:3700
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x75/0xd0 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770
 slab_alloc_node mm/slub.c:3495 [inline]
 slab_alloc mm/slub.c:3503 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3510 [inline]
 kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 lsm_file_alloc security/security.c:622 [inline]
 security_file_alloc+0x34/0x120 security/security.c:2637
 init_file+0x94/0x1f0 fs/file_table.c:179
 alloc_empty_file+0xb7/0x1d0 fs/file_table.c:228
 path_openat+0x120/0x3270 fs/namei.c:3787
 do_filp_open+0x1f2/0x430 fs/namei.c:3828
 do_sys_openat2+0x134/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x139/0x160 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9a156a7407
RSP: 002b:00007ffe52912780 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9a15daf880 RCX: 00007f9a156a7407
RDX: 0000000000080000 RSI: 00007ffe529128f0 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005595dcc5a7f5
R13: 00005595dcc5a7f5 R14: 0000000000000001 R15: 00005595dcc75140
 </TASK>