Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.958245] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[   29.969290] REISERFS (device loop0): using ordered data mode
[   29.975221] reiserfs: using flush barriers
[   29.984376] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
[   30.002945] REISERFS (device loop0): checking transaction log (loop0)
[   31.162844] REISERFS (device loop0): Using tea hash to sort names
[   31.171565] BUG: unable to handle kernel NULL pointer dereference at           (null)
[   31.179849] IP:           (null)
[   31.183294] PGD a9d2c067 P4D a9d2c067 PUD a9d25067 PMD 0 
[   31.188819] Oops: 0010 [#1] PREEMPT SMP KASAN
[   31.193668] Modules linked in:
[   31.197155] CPU: 1 PID: 7978 Comm: syz-executor021 Not tainted 4.14.232-syzkaller #0
[   31.205381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.215149] task: ffff8880aa2fe380 task.stack: ffff8880a0a50000
[   31.221226] RIP: 0010:          (null)
[   31.225111] RSP: 0018:ffff8880a0a57a30 EFLAGS: 00010246
[   31.230978] RAX: dffffc0000000000 RBX: ffffffff8796bbc0 RCX: 0000000000000000
[   31.238338] RDX: 0000000000000000 RSI: ffff88808e19fa20 RDI: ffff8880891f4748
[   31.245737] RBP: ffff8880891f4748 R08: 0000000000000001 R09: 0000000000000002
[   31.253548] R10: 0000000000000000 R11: ffff8880aa2fe380 R12: ffff88808e19fa20
[   31.260872] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000076
[   31.268369] FS:  00000000019cf300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[   31.277353] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.283326] CR2: 0000000000000000 CR3: 00000000aa8b0000 CR4: 00000000001406e0
[   31.290776] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.298310] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.306577] Call Trace:
[   31.309152]  __lookup_hash+0x1bb/0x270
[   31.313264]  ? __inode_permission+0xcd/0x2f0
[   31.317722]  lookup_one_len+0x279/0x3a0
[   31.322211]  ? lookup_one_len_unlocked+0x410/0x410
[   31.327742]  reiserfs_lookup_privroot+0x92/0x270
[   31.332620]  reiserfs_fill_super+0x1ae0/0x28c0
[   31.337206]  ? reiserfs_remount+0x1390/0x1390
[   31.341708]  ? lock_downgrade+0x740/0x740
[   31.346014]  ? snprintf+0xa5/0xd0
[   31.349457]  mount_bdev+0x2b3/0x360
[   31.353247]  ? reiserfs_remount+0x1390/0x1390
[   31.358440]  mount_fs+0x92/0x2a0
[   31.362015]  vfs_kern_mount.part.0+0x5b/0x470
[   31.366545]  do_mount+0xe53/0x2a00
[   31.370092]  ? copy_mount_string+0x40/0x40
[   31.374484]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   31.379578]  ? copy_mnt_ns+0xa30/0xa30
[   31.383458]  ? copy_mount_options+0x1fa/0x2f0
[   31.388211]  ? copy_mnt_ns+0xa30/0xa30
[   31.392276]  SyS_mount+0xa8/0x120
[   31.395726]  ? copy_mnt_ns+0xa30/0xa30
[   31.399680]  do_syscall_64+0x1d5/0x640
[   31.403921]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   31.409471] RIP: 0033:0x4451aa
[   31.412995] RSP: 002b:00007ffdf1f53ac8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
[   31.420861] RAX: ffffffffffffffda RBX: 00007ffdf1f53b20 RCX: 00000000004451aa
[   31.428308] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdf1f53ae0
[   31.436411] RBP: 00007ffdf1f53ae0 R08: 00007ffdf1f53b20 R09: 0000000000000000
[   31.444155] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200002a8
[   31.452072] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000007
[   31.459355] Code:  Bad RIP value.
[   31.463008] RIP:           (null) RSP: ffff8880a0a57a30
[   31.468383] CR2: 0000000000000000
[   31.475721] ---[ end trace 5d8dd39ec190a01b ]---
[   31.480831] Kernel panic - not syncing: Fatal exception
[   31.487604] Kernel Offset: disabled
[   31.491657] Rebooting in 86400 seconds..