RBP: 0000000000000082 R08: 0000000020c9e000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b6c37
R13: 00007f22cc2a4b48 R14: 00000000004b6c47 R15: 0000000000000000
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 8754 Comm: syz-executor7 Not tainted 4.14.0-rc1+ #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d95e8040 task.stack: ffff88019d710000
RIP: 0010:__list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51
RSP: 0018:ffff88019d717b30 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8801d843d058 RDI: ffff8801d843d060
RBP: ffff88019d717b48 R08: ffff88019d717430 R09: ffff88019d717428
R10: ffff88019d7173a0 R11: 1ffff1003b2bd29b R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff10033ae2f8a R15: ffff8801d843d058
FS:  00007f22cc2a5700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004da7e4 CR3: 00000001cf00d000 CR4: 00000000001426e0
DR0: 0000000020001000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 __list_del_entry include/linux/list.h:116 [inline]
 list_del include/linux/list.h:124 [inline]
 unregister_shrinker+0x79/0x300 mm/vmscan.c:300
 deactivate_locked_super+0x64/0xd0 fs/super.c:307
 deactivate_super+0x141/0x1b0 fs/super.c:339
 cleanup_mnt+0xb2/0x150 fs/namespace.c:1171
 __cleanup_mnt+0x16/0x20 fs/namespace.c:1178
 task_work_run+0x199/0x270 kernel/task_work.c:112
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x2a6/0x300 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x42f/0x500 arch/x86/entry/common.c:266
 entry_SYSCALL_64_fastpath+0xbc/0xbe
RIP: 0033:0x4520a9
RSP: 002b:00007f22cc2a4c08 EFLAGS: 00000216 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffea RBX: 0000000000718000 RCX: 00000000004520a9
RDX: 00000000200f2ffb RSI: 0000000020048ff6 RDI: 0000000020cc1ff6
RBP: 0000000000003df0 R08: 0000000020c9e000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004bbb2d
R13: 0000000000000019 R14: 0000000020cc1ff6 R15: 0000000020048ff6
Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 
RIP: __list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: ffff88019d717b30
---[ end trace 641571599a6e67ec ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..