INFO: rcu_sched detected stalls on CPUs/tasks:
	(detected by 1, t=125002 jiffies, g=6022, c=6021, q=20)
All QSes seen, last rcu_sched kthread activity 125002 (4294830742-4294705740), jiffies_till_next_fqs=3, root ->qsmask 0x0
syz-executor1   R  running task    20792  4580   4572 0x00000008
Call Trace:
 <IRQ>
 sched_show_task.cold.87+0x27a/0x301 kernel/sched/core.c:5325
 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:173
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1283
 __run_hrtimer kernel/time/hrtimer.c:1386 [inline]
 __hrtimer_run_queues+0x3e3/0x10a0 kernel/time/hrtimer.c:1448
 hrtimer_interrupt+0x286/0x650 kernel/time/hrtimer.c:1506
 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:862
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101
RSP: 0018:ffff8801a178fa80 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8801a1780740 RBX: dffffc0000000000 RCX: ffffffff81c38639
RDX: 0000000000000000 RSI: ffffffff81c34053 RDI: ffff8801a178fbf8
RBP: ffff8801a178fa80 R08: ffff8801a1780740 R09: ffffed0033e5524c
R10: ffffed0033e5524c R11: ffff88019f2a9263 R12: ffff8801a178fc30
R13: dffffc0000000000 R14: 1ffff100342f1f7e R15: ffffed00342f1f81
 list_empty include/linux/list.h:203 [inline]
 shrink_dentry_list+0x83/0x7c0 fs/dcache.c:1052
 shrink_dcache_parent+0xba/0x230 fs/dcache.c:1490
 vfs_rmdir+0x202/0x470 fs/namei.c:3850
 do_rmdir+0x523/0x610 fs/namei.c:3911
 SYSC_rmdir fs/namei.c:3929 [inline]
 SyS_rmdir+0x1a/0x20 fs/namei.c:3927
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4550f7
RSP: 002b:00007ffe651a7e48 EFLAGS: 00000206 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004550f7
RDX: 0000000000000000 RSI: 00007ffe651a9bf0 RDI: 00007ffe651a9bf0
RBP: 00007ffe651a9bf0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000009 R11: 0000000000000206 R12: 00000000028a5940
R13: 0000000000000000 R14: 0000000000000025 R15: 0000000000009594
rcu_sched kthread starved for 125002 jiffies! g6022 c6021 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
RCU grace-period kthread stack dump:
rcu_sched       R  running task    23896     9      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2848 [inline]
 __schedule+0x801/0x1e30 kernel/sched/core.c:3490
 schedule+0xef/0x430 kernel/sched/core.c:3549
 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:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:411