Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.319714] IPVS: ftp: loaded support on port[0] = 21
[   34.574095] ------------[ cut here ]------------
[   34.579013] kernel BUG at fs/notify/dnotify/dnotify.c:132!
[   34.586131] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   34.591520] CPU: 1 PID: 198 Comm: kworker/u4:3 Not tainted 4.19.157-syzkaller #0
[   34.599037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.608381] Workqueue: events_unbound fsnotify_mark_destroy_workfn
[   34.614684] RIP: 0010:dnotify_free_mark+0x45/0x50
[   34.619504] Code: c1 ea 03 80 3c 02 00 75 23 48 83 7d 78 00 75 15 e8 c0 fd ad ff 48 89 ee 48 8b 3d ce 08 70 09 5d e9 50 e9 e3 ff e8 ab fd ad ff <0f> 0b e8 14 25 e4 ff eb d6 66 90 41 55 49 89 fd 41 54 55 49 8d 6d
[   34.638383] RSP: 0018:ffff8880b4e0fc58 EFLAGS: 00010293
[   34.643734] RAX: ffff8880b4e00680 RBX: ffffffff88754900 RCX: 1ffff110169c1f99
[   34.651036] RDX: 0000000000000000 RSI: ffffffff81b6d1b5 RDI: ffff8880abfefbb8
[   34.658305] RBP: ffff8880abfefb40 R08: 0000000000000000 R09: 0000000000000000
[   34.665552] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b15e3840
[   34.672814] R13: ffff8880abfeff00 R14: ffff8880abfefb50 R15: ffff8880abfefb58
[   34.680066] FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
[   34.688268] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.694127] CR2: 000055b8060051d8 CR3: 00000000998c6000 CR4: 00000000001406e0
[   34.701390] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.708651] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.715897] Call Trace:
[   34.718469]  fsnotify_final_mark_destroy+0x71/0xb0
[   34.723377]  fsnotify_mark_destroy_workfn+0x1eb/0x340
[   34.728642]  ? fsnotify_final_mark_destroy+0xb0/0xb0
[   34.733729]  process_one_work+0x864/0x1570
[   34.737944]  ? pwq_dec_nr_in_flight+0x2d0/0x2d0
[   34.742592]  worker_thread+0x64c/0x1130
[   34.746550]  ? __kthread_parkme+0x133/0x1e0
[   34.750866]  ? process_one_work+0x1570/0x1570
[   34.755355]  kthread+0x33f/0x460
[   34.758699]  ? kthread_park+0x180/0x180
[   34.762667]  ret_from_fork+0x24/0x30
[   34.766361] Modules linked in:
[   34.770021] ---[ end trace db6f90bdbbff4ff1 ]---
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