INFO: rcu_sched detected stalls on CPUs/tasks:
	(detected by 1, t=125007 jiffies, g=16639, c=16638, q=87)
All QSes seen, last rcu_sched kthread activity 125014 (4294922222-4294797208), jiffies_till_next_fqs=3, root ->qsmask 0x0
syz-executor3   R  running task    21816  4494   4486 0x00000008
Call Trace:
 <IRQ>
 sched_show_task.cold.86+0x27a/0x301 kernel/sched/core.c:5321
 print_other_cpu_stall.cold.79+0x92f/0x9d2 kernel/rcu/tree.c:1481
 check_cpu_stall.isra.61+0x706/0xf50 kernel/rcu/tree.c:1599
 __rcu_pending kernel/rcu/tree.c:3356 [inline]
 rcu_pending kernel/rcu/tree.c:3401 [inline]
 rcu_check_callbacks+0x21b/0xad0 kernel/rcu/tree.c:2763
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x3e3/0x10a0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0x15d/0x710 arch/x86/kernel/apic/apic.c:1050
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
 </IRQ>
RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:167 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:184 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline]
RIP: 0010:check_memory_region+0x117/0x1b0 mm/kasan/kasan.c:267
RSP: 0018:ffff8801854e7910 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffed00371b3f71 RBX: 1ffff100371b3f70 RCX: ffffffff815e18de
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801b8d9fb80
RBP: ffff8801854e7928 R08: ffffed00371b3f71 R09: ffffed00371b3f70
R10: ffffed00371b3f70 R11: ffff8801b8d9fb83 R12: ffffed00371b3f71
R13: dffffc0000000000 R14: ffff8801854e79a8 R15: ffff8801854e7b50
 kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272
 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:36 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:98 [inline]
 do_raw_spin_unlock+0x9e/0x2e0 kernel/locking/spinlock_debug.c:134
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock+0x22/0x30 kernel/locking/spinlock.c:176
 spin_unlock include/linux/spinlock.h:350 [inline]
 d_walk+0x75f/0xc80 fs/dcache.c:1332
 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486
 vfs_rmdir+0x202/0x470 fs/namei.c:3850
 do_rmdir+0x523/0x610 fs/namei.c:3911
 __do_sys_rmdir fs/namei.c:3929 [inline]
 __se_sys_rmdir fs/namei.c:3927 [inline]
 __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455777
RSP: 002b:00007ffdb2ac7248 EFLAGS: 00000206 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777
RDX: 0000000000000000 RSI: 00007ffdb2ac8ff0 RDI: 00007ffdb2ac8ff0
RBP: 00007ffdb2ac8ff0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000006 R11: 0000000000000206 R12: 000000000203f940
R13: 0000000000000000 R14: 0000000000000202 R15: 000000000001fae5
rcu_sched kthread starved for 125608 jiffies! g16639 c16638 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
RCU grace-period kthread stack dump:
rcu_sched       R  running task    23768     9      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2859 [inline]
 __schedule+0x801/0x1e30 kernel/sched/core.c:3501
 schedule+0xef/0x430 kernel/sched/core.c:3545
 schedule_timeout+0x138/0x240 kernel/time/timer.c:1801
 rcu_gp_kthread+0x6b5/0x1940 kernel/rcu/tree.c:2231
 kthread+0x345/0x410 kernel/kthread.c:240
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412