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


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   36.924833] MINIX-fs: mounting unchecked file system, running fsck is recommended
[   36.934082] ------------[ cut here ]------------
[   36.938981] WARNING: CPU: 1 PID: 6336 at fs/inode.c:342 inc_nlink+0x113/0x130
[   36.946259] Kernel panic - not syncing: panic_on_warn set ...
[   36.946259] 
[   36.953925] CPU: 1 PID: 6336 Comm: syz-executor651 Not tainted 4.14.176-syzkaller #0
[   36.961801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.971156] Call Trace:
[   36.973753]  dump_stack+0x13e/0x194
[   36.977362]  panic+0x1f9/0x42d
[   36.980542]  ? add_taint.cold+0x16/0x16
[   36.984498]  ? inc_nlink+0x113/0x130
[   36.988191]  ? inc_nlink+0x113/0x130
[   36.991887]  __warn.cold+0x2f/0x30
[   36.995407]  ? ist_end_non_atomic+0x10/0x10
[   36.999882]  ? inc_nlink+0x113/0x130
[   37.003585]  report_bug+0x20a/0x248
[   37.007215]  do_error_trap+0x195/0x2d0
[   37.011097]  ? math_error+0x2d0/0x2d0
[   37.014879]  ? avc_has_perm_noaudit+0x400/0x400
[   37.019538]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   37.024992]  invalid_op+0x1b/0x40
[   37.028536] RIP: 0010:inc_nlink+0x113/0x130
[   37.032980] RSP: 0018:ffff888098007db0 EFLAGS: 00010297
[   37.038363] RAX: ffff8880a96fc180 RBX: ffff8880826c1970 RCX: 1ffff110152df93e
[   37.046022] RDX: 0000000000000000 RSI: ffff8880895915c0 RDI: ffff8880826c1a48
[   37.053287] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
[   37.060561] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880826c19b8
[   37.067812] R13: ffff8880895915c0 R14: ffff888089591618 R15: 0000000000000000
[   37.075082]  minix_mkdir+0x5a/0x160
[   37.078705]  ? minix_create+0x30/0x30
[   37.082593]  ? security_inode_mkdir+0xcc/0x100
[   37.087174]  vfs_mkdir+0x3af/0x620
[   37.090714]  SyS_mkdirat+0x1bc/0x210
[   37.094419]  ? SyS_mknod+0x390/0x390
[   37.098117]  ? __close_fd+0x159/0x230
[   37.101904]  ? do_syscall_64+0x4c/0x640
[   37.105880]  ? SyS_mknod+0x390/0x390
[   37.109574]  do_syscall_64+0x1d5/0x640
[   37.113720]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   37.119178] RIP: 0033:0x444a69
[   37.122366] RSP: 002b:00007ffc0ec7e328 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[   37.130074] RAX: ffffffffffffffda RBX: 00007ffc0ec7e330 RCX: 0000000000444a69
[   37.137329] RDX: 00000000000001ff RSI: 0000000020000080 RDI: 0000000000000003
[   37.144585] RBP: 0000000000000000 R08: 0000000000400e50 R09: 0000000000400e50
[   37.151933] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004026d0
[   37.159184] R13: 0000000000402760 R14: 0000000000000000 R15: 0000000000000000
[   37.167965] Kernel Offset: disabled
[   37.172057] Rebooting in 86400 seconds..