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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: 22061 Comm: syz-executor5 Not tainted 4.14.0-rc1-next-20170919+ #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff880038b82680 task.stack: ffff880037410000
RIP: 0010:dnotify_free_mark+0x51/0x60 fs/notify/dnotify/dnotify.c:131
RSP: 0018:ffff880037417b20 EFLAGS: 00010246
RAX: 0000000000010000 RBX: ffff8800359bc960 RCX: ffffc900064ed000
RDX: 0000000000010000 RSI: ffffffff81bc8111 RDI: ffff8800359bc9e0
RBP: ffff880037417b28 R08: ffff88003b8de468 R09: 0000000000000000
R10: ffffffff870abee0 R11: 0000000000000000 R12: ffff8800359bc960
R13: ffffffff84f24760 R14: ffff880037417c60 R15: 0000000000000000
FS:  00007f036bba4700(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000207bcff0 CR3: 0000000032395000 CR4: 00000000000006e0
DR0: 0000000020001028 DR1: 0000000020001028 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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+0xa24/0xba0 fs/notify/dnotify/dnotify.c:371
 do_fcntl+0x9f5/0x1060 fs/fcntl.c:412
 SYSC_fcntl fs/fcntl.c:462 [inline]
 SyS_fcntl+0xdc/0x120 fs/fcntl.c:447
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4474f9
RSP: 002b:00007f036bba3c08 EFLAGS: 00000282 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 00000000004474f9
RDX: ffffffffffffffff RSI: 0000000000000402 RDI: 0000000000000017
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 00000000ffffffff
R13: 0000000000000730 R14: 00000000006e37f0 R15: 00007f036bba4700
Code: 3c 02 00 75 28 48 83 bb 80 00 00 00 00 75 17 e8 96 6b b1 ff 48 8b 3d ef b3 60 04 48 89 de e8 17 f8 e5 ff 5b 5d c3 e8 7f 6b b1 ff <0f> 0b e8 88 33 e6 ff eb d1 66 0f 1f 44 00 00 55 48 89 e5 41 57 
RIP: dnotify_free_mark+0x51/0x60 fs/notify/dnotify/dnotify.c:131 RSP: ffff880037417b20
---[ end trace 660b56710858d440 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..