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 '10.128.0.21' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   28.511890] BFS-fs: bfs_fill_super(): loop0 is unclean, continuing
[   28.518423] WARNING: CPU: 1 PID: 4468 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70
[   28.526386] Kernel panic - not syncing: panic_on_warn set ...
[   28.526386] 
[   28.533727] CPU: 1 PID: 4468 Comm: syzkaller458727 Not tainted 4.16.0-rc7+ #7
[   28.540968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.550292] Call Trace:
[   28.552854]  dump_stack+0x194/0x24d
[   28.556454]  ? arch_local_irq_restore+0x53/0x53
[   28.561096]  ? vsnprintf+0x1ed/0x1900
[   28.564875]  panic+0x1e4/0x41c
[   28.568045]  ? refcount_error_report+0x214/0x214
[   28.572778]  ? show_regs_print_info+0x18/0x18
[   28.577253]  ? __warn+0x1c1/0x200
[   28.580688]  ? kmalloc_slab+0x5d/0x70
[   28.584474]  __warn+0x1dc/0x200
[   28.587734]  ? vprintk_emit+0x5b5/0xb90
[   28.591689]  ? kmalloc_slab+0x5d/0x70
[   28.595462]  report_bug+0x1f4/0x2b0
[   28.599068]  fixup_bug.part.10+0x37/0x80
[   28.603102]  do_error_trap+0x2d7/0x3e0
[   28.606975]  ? math_error+0x400/0x400
[   28.610757]  ? remove_wait_queue+0x350/0x350
[   28.615147]  ? __sched_text_start+0x8/0x8
[   28.619358]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   28.624177]  do_invalid_op+0x1b/0x20
[   28.627861]  invalid_op+0x1b/0x40
[   28.631288] RIP: 0010:kmalloc_slab+0x5d/0x70
[   28.635674] RSP: 0018:ffff8801ad117908 EFLAGS: 00010246
[   28.641015] RAX: 0000000000000000 RBX: ffff8801b904e004 RCX: ffffffff820931da
[   28.648274] RDX: 1ffff1003a1dfac4 RSI: 0000000000000000 RDI: 0000000000800000
[   28.655527] RBP: ffff8801ad117908 R08: 1ffff10035a22e81 R09: 0000000000000000
[   28.662772] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000007fffff
[   28.670024] R13: ffff8801b904e000 R14: 00000000014080c0 R15: ffff8801d9194cc0
[   28.677288]  ? bfs_fill_super+0x38a/0xea0
[   28.681418]  __kmalloc+0x25/0x760
[   28.684848]  ? __might_sleep+0x95/0x190
[   28.688804]  ? bfs_fill_super+0x3d3/0xea0
[   28.692934]  ? bfs_fill_super+0xde4/0xea0
[   28.697069]  bfs_fill_super+0x3d3/0xea0
[   28.701024]  ? snprintf+0xc0/0xf0
[   28.704469]  ? set_blocksize+0x1f1/0x260
[   28.708516]  mount_bdev+0x2b7/0x370
[   28.712117]  ? bfs_iget+0xb70/0xb70
[   28.715718]  bfs_mount+0x34/0x40
[   28.719064]  mount_fs+0x66/0x2d0
[   28.722416]  vfs_kern_mount.part.26+0xc6/0x4a0
[   28.726979]  ? may_umount+0xa0/0xa0
[   28.730586]  ? _raw_read_unlock+0x22/0x30
[   28.734707]  ? __get_fs_type+0x8a/0xc0
[   28.738567]  do_mount+0xea4/0x2bb0
[   28.742082]  ? __might_fault+0x110/0x1d0
[   28.746121]  ? copy_mount_string+0x40/0x40
[   28.750326]  ? check_same_owner+0x320/0x320
[   28.754618]  ? __check_object_size+0x8b/0x530
[   28.759089]  ? __might_sleep+0x95/0x190
[   28.763047]  ? kasan_check_write+0x14/0x20
[   28.767260]  ? _copy_from_user+0x99/0x110
[   28.771394]  ? memdup_user+0x5e/0x90
[   28.775081]  ? copy_mount_options+0x1f7/0x2e0
[   28.779548]  SyS_mount+0xab/0x120
[   28.782970]  ? copy_mnt_ns+0xb30/0xb30
[   28.786828]  do_syscall_64+0x281/0x940
[   28.790686]  ? vmalloc_sync_all+0x30/0x30
[   28.794806]  ? trace_event_raw_event_sys_exit+0x260/0x260
[   28.800317]  ? syscall_return_slowpath+0x550/0x550
[   28.805218]  ? syscall_return_slowpath+0x2ac/0x550
[   28.810123]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   28.815458]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   28.820275]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   28.825435] RIP: 0033:0x442d3a
[   28.828593] RSP: 002b:00007ffd0d12ac38 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
[   28.836274] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442d3a
[   28.843514] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd0d12ac40
[   28.850758] RBP: 0000000000000004 R08: 0000000000000000 R09: 000000000000000a
[   28.858004] R10: 00000000c0ed0000 R11: 0000000000000297 R12: 0000000000401ba0
[   28.865252] R13: 0000000000401c30 R14: 0000000000000000 R15: 0000000000000000
[   28.873090] Dumping ftrace buffer:
[   28.876703]    (ftrace buffer empty)
[   28.880388] Kernel Offset: disabled
[   28.883996] Rebooting in 86400 seconds..