[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.65' (ECDSA) to the list of known hosts.
syzkaller login: [   32.371110] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[   32.379984] REISERFS (device loop0): using ordered data mode
[   32.386020] reiserfs: using flush barriers
[   32.391270] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[   32.407353] REISERFS (device loop0): checking transaction log (loop0)
[   32.449498] REISERFS (device loop0): Using r5 hash to sort names
[   32.456198] ------------[ cut here ]------------
[   32.460975] WARNING: CPU: 1 PID: 7978 at fs/inode.c:284 drop_nlink+0x7d/0xd0
[   32.468133] Kernel panic - not syncing: panic_on_warn set ...
[   32.468133] 
[   32.475469] CPU: 1 PID: 7978 Comm: syz-executor846 Not tainted 4.14.300-syzkaller #0
[   32.483406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   32.492732] Call Trace:
[   32.495300]  dump_stack+0x1b2/0x281
[   32.498903]  panic+0x1f9/0x42d
[   32.502069]  ? add_taint.cold+0x16/0x16
[   32.506019]  ? drop_nlink+0x7d/0xd0
[   32.509620]  ? drop_nlink+0x7d/0xd0
[   32.513242]  __warn.cold+0x20/0x44
[   32.516782]  ? ist_end_non_atomic+0x10/0x10
[   32.521090]  ? drop_nlink+0x7d/0xd0
[   32.524692]  report_bug+0x208/0x250
[   32.528294]  do_error_trap+0x195/0x2d0
[   32.532155]  ? math_error+0x2d0/0x2d0
[   32.535934]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.540759]  invalid_op+0x1b/0x40
[   32.544195]  ? drop_nlink+0x7d/0xd0
[   32.547799]  ? reiserfs_mkdir+0x6da/0x8b0
[   32.551923]  ? reiserfs_mknod+0x690/0x690
[   32.556048]  ? reiserfs_xattr_init+0x393/0xa50
[   32.560602]  ? reiserfs_fill_super+0x1d4a/0x2990
[   32.565331]  ? reiserfs_remount+0x1390/0x1390
[   32.569801]  ? lock_downgrade+0x740/0x740
[   32.573922]  ? snprintf+0xa5/0xd0
[   32.577358]  ? mount_bdev+0x2b3/0x360
[   32.581130]  ? reiserfs_remount+0x1390/0x1390
[   32.585601]  ? mount_fs+0x92/0x2a0
[   32.589114]  ? vfs_kern_mount.part.0+0x5b/0x470
[   32.593769]  ? do_mount+0xe65/0x2a30
[   32.597461]  ? retint_kernel+0x2d/0x2d
[   32.601330]  ? copy_mount_string+0x40/0x40
[   32.605562]  ? copy_mount_options+0x194/0x2f0
[   32.610058]  ? copy_mount_options+0x1fa/0x2f0
[   32.614533]  ? copy_mnt_ns+0xa30/0xa30
[   32.618397]  ? SyS_mount+0xa8/0x120
[   32.622000]  ? copy_mnt_ns+0xa30/0xa30
[   32.625861]  ? do_syscall_64+0x1d5/0x640
[   32.629897]  ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   32.635616] Kernel Offset: disabled
[   32.639262] Rebooting in 86400 seconds..