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 '10.128.0.22' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   24.329450] BFS-fs: bfs_fill_super(): loop0 is unclean, continuing
[   24.335980] WARNING: CPU: 0 PID: 4469 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70
[   24.343935] Kernel panic - not syncing: panic_on_warn set ...
[   24.343935] 
[   24.351273] CPU: 0 PID: 4469 Comm: syzkaller839510 Not tainted 4.16.0+ #11
[   24.358256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.367589] Call Trace:
[   24.370154]  dump_stack+0x1a7/0x27d
[   24.373756]  ? arch_local_irq_restore+0x53/0x53
[   24.378403]  ? vsnprintf+0x1ed/0x1900
[   24.382180]  panic+0x1f8/0x42c
[   24.385344]  ? refcount_error_report+0x214/0x214
[   24.390070]  ? show_regs_print_info+0x18/0x18
[   24.394538]  ? __warn+0x1c1/0x200
[   24.397967]  ? kmalloc_slab+0x5d/0x70
[   24.401737]  __warn+0x1dc/0x200
[   24.404989]  ? kmalloc_slab+0x5d/0x70
[   24.408767]  report_bug+0x1f4/0x2b0
[   24.412369]  fixup_bug.part.10+0x37/0x80
[   24.416405]  do_error_trap+0x2d7/0x3e0
[   24.420265]  ? math_error+0x400/0x400
[   24.424039]  ? remove_wait_queue+0x350/0x350
[   24.428425]  ? __sched_text_start+0x8/0x8
[   24.432635]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   24.437451]  do_invalid_op+0x1b/0x20
[   24.441137]  invalid_op+0x1b/0x40
[   24.444585] RIP: 0010:kmalloc_slab+0x5d/0x70
[   24.448964] RSP: 0018:ffff8801b1f37908 EFLAGS: 00010246
[   24.454298] RAX: 0000000000000000 RBX: ffff8801b5cd9004 RCX: ffffffff820964ba
[   24.461539] RDX: 1ffff10039c57cc4 RSI: 0000000000000000 RDI: 0000000000800000
[   24.468779] RBP: ffff8801b1f37908 R08: ffffed003b604f99 R09: ffffed003b604f99
[   24.476030] R10: 0000000000000001 R11: ffffed003b604f98 R12: 00000000007fffff
[   24.483276] R13: ffff8801b5cd9000 R14: 00000000014080c0 R15: ffff8801d96b21c0
[   24.490529]  ? bfs_fill_super+0x38a/0xea0
[   24.494652]  __kmalloc+0x25/0x760
[   24.498081]  ? __might_sleep+0x95/0x190
[   24.502034]  ? bfs_fill_super+0x3d3/0xea0
[   24.506153]  ? bfs_fill_super+0xde4/0xea0
[   24.510272]  bfs_fill_super+0x3d3/0xea0
[   24.514221]  ? snprintf+0xc0/0xf0
[   24.517653]  ? set_blocksize+0x1f1/0x260
[   24.521688]  mount_bdev+0x2b7/0x370
[   24.525285]  ? bfs_iget+0xb70/0xb70
[   24.528885]  bfs_mount+0x34/0x40
[   24.532225]  mount_fs+0x66/0x2d0
[   24.535569]  vfs_kern_mount.part.26+0xc6/0x4a0
[   24.540137]  ? may_umount+0xa0/0xa0
[   24.543740]  ? _raw_read_unlock+0x22/0x30
[   24.547862]  ? __get_fs_type+0x8a/0xc0
[   24.551722]  do_mount+0xea4/0x2bb0
[   24.555235]  ? __might_fault+0x110/0x1d0
[   24.559269]  ? copy_mount_string+0x40/0x40
[   24.563474]  ? check_same_owner+0x320/0x320
[   24.567767]  ? __check_object_size+0x8b/0x530
[   24.572238]  ? __might_sleep+0x95/0x190
[   24.576187]  ? kasan_check_write+0x14/0x20
[   24.580393]  ? _copy_from_user+0x99/0x110
[   24.584515]  ? memdup_user+0x5e/0x90
[   24.588202]  ? copy_mount_options+0x1f7/0x2e0
[   24.592668]  SyS_mount+0xab/0x120
[   24.596091]  ? copy_mnt_ns+0xb40/0xb40
[   24.599950]  do_syscall_64+0x281/0x940
[   24.603812]  ? vmalloc_sync_all+0x30/0x30
[   24.607932]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   24.612660]  ? syscall_return_slowpath+0x550/0x550
[   24.617565]  ? syscall_return_slowpath+0x2ac/0x550
[   24.622474]  ? prepare_exit_to_usermode+0x350/0x350
[   24.627465]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   24.632804]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   24.637621]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   24.642782] RIP: 0033:0x442daa
[   24.645942] RSP: 002b:00007ffe5c6d37f8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
[   24.653627] RAX: ffffffffffffffda RBX: 0000000000001c00 RCX: 0000000000442daa
[   24.660868] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe5c6d3800
[   24.668111] RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000a
[   24.675355] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000004
[   24.682596] R13: 0000000000401ca0 R14: 0000000000000000 R15: 0000000000000000
[   24.690428] Dumping ftrace buffer:
[   24.694035]    (ftrace buffer empty)
[   24.697719] Kernel Offset: disabled
[   24.701322] Rebooting in 86400 seconds..