INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.10.0' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.148089] BFS-fs: bfs_fill_super(): loop0 is unclean, continuing
[   31.154789] WARNING: CPU: 0 PID: 4514 at mm/slab_common.c:996 kmalloc_slab+0x56/0x70
[   31.162663] Kernel panic - not syncing: panic_on_warn set ...
[   31.162663] 
[   31.170015] CPU: 0 PID: 4514 Comm: syzkaller583443 Not tainted 4.17.0-rc1+ #8
[   31.177273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.186603] Call Trace:
[   31.189173]  dump_stack+0x1b9/0x294
[   31.192781]  ? dump_stack_print_info.cold.2+0x52/0x52
[   31.197963]  ? slab_caches_to_rcu_destroy_workfn+0xb0/0xc0
[   31.203570]  panic+0x22f/0x4de
[   31.206743]  ? add_taint.cold.5+0x16/0x16
[   31.210884]  ? __warn.cold.8+0x148/0x1b3
[   31.214923]  ? __warn.cold.8+0x117/0x1b3
[   31.218963]  ? kmalloc_slab+0x56/0x70
[   31.222746]  __warn.cold.8+0x163/0x1b3
[   31.226613]  ? kmalloc_slab+0x56/0x70
[   31.230395]  report_bug+0x252/0x2d0
[   31.234005]  do_error_trap+0x1de/0x490
[   31.237882]  ? prepare_to_wait+0x194/0x4d0
[   31.242096]  ? math_error+0x420/0x420
[   31.245883]  ? console_unlock+0x1100/0x1100
[   31.250183]  ? remove_wait_queue+0x350/0x350
[   31.254570]  ? __sched_text_start+0x8/0x8
[   31.258700]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.263522]  do_invalid_op+0x1b/0x20
[   31.267214]  invalid_op+0x14/0x20
[   31.270650] RIP: 0010:kmalloc_slab+0x56/0x70
[   31.275043] RSP: 0018:ffff8801ace578d0 EFLAGS: 00010246
[   31.280395] RAX: 0000000000000000 RBX: 00000000007fffff RCX: ffffffff8221978b
[   31.287643] RDX: 1ffff10039b387a4 RSI: 0000000000000000 RDI: 0000000000800000
[   31.294890] RBP: ffff8801ace578d0 R08: ffff8801ac57e3c0 R09: ffffed003b5c4f90
[   31.302138] R10: ffffed003b5c4f90 R11: ffff8801dae27c87 R12: ffff8801b3d37004
[   31.309386] R13: 0000000000000000 R14: ffff8801cd9c3d00 R15: 00000000014080c0
[   31.316644]  ? bfs_fill_super+0x40b/0xef0
[   31.320776]  __kmalloc+0x25/0x760
[   31.324212]  ? __might_sleep+0x95/0x190
[   31.328170]  ? bfs_fill_super+0x45f/0xef0
[   31.332299]  bfs_fill_super+0x45f/0xef0
[   31.336256]  ? vsprintf+0x40/0x40
[   31.339688]  ? set_blocksize+0x2c4/0x350
[   31.343730]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   31.349245]  mount_bdev+0x30c/0x3e0
[   31.352851]  ? bfs_iget+0xb40/0xb40
[   31.356469]  bfs_mount+0x34/0x40
[   31.359816]  mount_fs+0xae/0x328
[   31.363161]  ? mpi_free.cold.1+0x19/0x19
[   31.367204]  vfs_kern_mount.part.34+0xd4/0x4d0
[   31.371769]  ? may_umount+0xb0/0xb0
[   31.375378]  ? _raw_read_unlock+0x22/0x30
[   31.379503]  ? __get_fs_type+0x97/0xc0
[   31.383371]  do_mount+0x564/0x3070
[   31.386892]  ? lock_downgrade+0x8e0/0x8e0
[   31.391032]  ? copy_mount_string+0x40/0x40
[   31.395259]  ? check_same_owner+0x320/0x320
[   31.399572]  ? __sanitizer_cov_trace_cmp8+0x18/0x20
[   31.404576]  ? __check_object_size+0x95/0x5d9
[   31.409058]  ? __might_sleep+0x95/0x190
[   31.413029]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   31.418551]  ? _copy_from_user+0xdf/0x150
[   31.422679]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   31.428200]  ? copy_mount_options+0x285/0x380
[   31.432680]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   31.438197]  ksys_mount+0x12d/0x140
[   31.441808]  __x64_sys_mount+0xbe/0x150
[   31.445761]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.450758]  do_syscall_64+0x1b1/0x800
[   31.454634]  ? syscall_return_slowpath+0x5c0/0x5c0
[   31.459542]  ? syscall_return_slowpath+0x30f/0x5c0
[   31.464453]  ? entry_SYSCALL_64_after_hwframe+0x59/0xbe
[   31.469798]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.474622]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   31.479788] RIP: 0033:0x442dfa
[   31.482956] RSP: 002b:00007ffe959db7f8 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5
[   31.490642] RAX: ffffffffffffffda RBX: 0000000000001c00 RCX: 0000000000442dfa
[   31.497896] RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007ffe959db800
[   31.505144] RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000a
[   31.512390] R10: 0000000000804000 R11: 0000000000000217 R12: 0000000000000004
[   31.519637] R13: 0000000000401cf0 R14: 0000000000000000 R15: 0000000000000000
[   31.527533] Dumping ftrace buffer:
[   31.531173]    (ftrace buffer empty)
[   31.534861] Kernel Offset: disabled
[   31.538472] Rebooting in 86400 seconds..