------------[ cut here ]------------
kernel BUG at fs/notify/dnotify/dnotify.c:131!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 14201 Comm: syz-executor5 Not tainted 4.13.0-rc5-next-20170817+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff880054186580 task.stack: ffff880057420000
RIP: 0010:dnotify_free_mark+0x4b/0x60 fs/notify/dnotify/dnotify.c:131
RSP: 0018:ffff880057427b20 EFLAGS: 00010246
RAX: 0000000000010000 RBX: ffff88003dcbfb40 RCX: ffffc90003ea1000
RDX: 0000000000010000 RSI: ffffffff81bb5ceb RDI: ffff88003dcbfbb8
RBP: ffff880057427b28 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87295640 R11: ffff880038e02b20 R12: ffff88003dcbfb40
R13: ffffffff85bdd1e0 R14: ffff880057427c60 R15: 0000000000000000
FS:  00007f9a51ad5700(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004c60a4 CR3: 00000000693d1000 CR4: 00000000000006e0
Call Trace:
 fsnotify_final_mark_destroy+0x7d/0xc0 fs/notify/mark.c:202
 fsnotify_put_mark+0x469/0x730 fs/notify/mark.c:215
 fcntl_dirnotify+0xa12/0xb90 fs/notify/dnotify/dnotify.c:371
 do_fcntl+0x9e0/0x1050 fs/fcntl.c:412
 SYSC_fcntl fs/fcntl.c:462 [inline]
 SyS_fcntl+0xd6/0x110 fs/fcntl.c:447
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446739
RSP: 002b:00007f9a51ad4c08 EFLAGS: 00000286 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 0000000000446739
RDX: ffffffffffffffff RSI: 0000000000000402 RDI: 0000000000000016
RBP: 00007f9a51ad4a00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 00000000004a8096
R13: 0000000000000000 R14: 00007f9a51ad49c8 R15: 00007f9a51ad4b38
Code: ea 03 80 3c 02 00 75 25 48 83 7b 78 00 75 17 e8 1c e0 b1 ff 48 8b 3d 15 c7 60 04 48 89 de e8 cd 0e e6 ff 5b 5d c3 e8 05 e0 b1 ff <0f> 0b e8 4e 4a e6 ff eb d4 66 66 66 2e 0f 1f 84 00 00 00 00 00 
RIP: dnotify_free_mark+0x4b/0x60 fs/notify/dnotify/dnotify.c:131 RSP: ffff880057427b20
---[ end trace c0244aeafa13a17a ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..