BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 149s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 147s!
watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor4:4548]
Kernel panic - not syncing: softlockup: hung tasks
CPU: 1 PID: 4548 Comm: syz-executor4 Tainted: G             L    4.16.0+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 watchdog_timer_fn.cold.5+0xf3/0x126 kernel/watchdog.c:443
 __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:list_empty include/linux/list.h:203 [inline]
RIP: 0010:d_walk+0x40e/0xc80 fs/dcache.c:1291
RSP: 0018:ffff88019de279d8 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13
RAX: ffff8801c9b6fc40 RBX: ffff8801c9b6fc30 RCX: ffffed0033bc4f5e
RDX: 1ffff1003936df88 RSI: ffffffff81c37a79 RDI: 0000000000000005
RBP: ffff88019de27b58 R08: ffff88019de18200 R09: ffffed003936df78
R10: ffffed003936df78 R11: ffff8801c9b6fbc3 R12: ffff8801c9b6fb40
R13: dffffc0000000000 R14: ffff8801c9b6fbc0 R15: ffff88019de27b30
 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
 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: 0033:0x4550e7
RSP: 002b:00007ffedc22e028 EFLAGS: 00000206 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00000000004550e7
RDX: 0000000000000000 RSI: 00007ffedc22fdd0 RDI: 00007ffedc22fdd0
RBP: 00007ffedc22fdd0 R08: 0000000000000000 R09: 0000000000000001
R10: 000000000000000a R11: 0000000000000206 R12: 0000000001c8c940
R13: 0000000000000000 R14: 00000000000007db R15: 0000000000053c5e
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..