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 '10.128.0.42' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.901600] WARNING: CPU: 1 PID: 4478 at fs/attr.c:213 notify_change+0xd94/0x10c0
[   29.909258] Kernel panic - not syncing: panic_on_warn set ...
[   29.909258] 
[   29.916628] CPU: 1 PID: 4478 Comm: syzkaller206342 Not tainted 4.16.0+ #3
[   29.923553] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.932904] Call Trace:
[   29.935503]  dump_stack+0x1b9/0x294
[   29.939137]  ? dump_stack_print_info.cold.2+0x52/0x52
[   29.944329]  ? notify_change+0xd60/0x10c0
[   29.948460]  panic+0x22f/0x4de
[   29.951631]  ? add_taint.cold.5+0x16/0x16
[   29.955761]  ? __warn.cold.8+0x148/0x1b3
[   29.959801]  ? __warn.cold.8+0x117/0x1b3
[   29.963842]  ? notify_change+0xd94/0x10c0
[   29.967972]  __warn.cold.8+0x163/0x1b3
[   29.971839]  ? notify_change+0xd94/0x10c0
[   29.975971]  report_bug+0x252/0x2d0
[   29.979579]  do_error_trap+0x1de/0x490
[   29.983445]  ? math_error+0x420/0x420
[   29.987226]  ? kasan_check_read+0x11/0x20
[   29.991353]  ? do_raw_spin_unlock+0x9e/0x2e0
[   29.995741]  ? do_raw_spin_trylock+0x1b0/0x1b0
[   30.000303]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   30.005124]  do_invalid_op+0x1b/0x20
[   30.008818]  invalid_op+0x1b/0x40
[   30.012248] RIP: 0010:notify_change+0xd94/0x10c0
[   30.016977] RSP: 0018:ffff8801ac867860 EFLAGS: 00010293
[   30.022323] RAX: ffff8801ace4a540 RBX: ffff8801d333b100 RCX: ffffffff81c3d8f8
[   30.029582] RDX: 0000000000000000 RSI: ffffffff81c3e534 RDI: 0000000000000007
[   30.036828] RBP: ffff8801ac867930 R08: ffff8801ace4a540 R09: ffffed003a66763c
[   30.044075] R10: ffffed003a66763c R11: ffff8801d333b1e7 R12: 0000000000004200
[   30.051322] R13: ffff8801ac867970 R14: ffff8801d52d1340 R15: 1ffff1003590cf18
[   30.058577]  ? notify_change+0x158/0x10c0
[   30.062702]  ? notify_change+0xd94/0x10c0
[   30.066844]  ? setattr_prepare+0x6b0/0x6b0
[   30.071078]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   30.076603]  ? security_inode_need_killpriv+0x80/0xa0
[   30.081776]  file_remove_privs+0x2bf/0x530
[   30.085992]  ? generic_update_time+0x420/0x420
[   30.090564]  ? blk_lld_busy+0x70/0x70
[   30.094350]  __generic_file_write_iter+0x169/0x5e0
[   30.099263]  blkdev_write_iter+0x233/0x420
[   30.103478]  ? blkdev_close+0xb0/0xb0
[   30.107260]  ? lock_downgrade+0x8e0/0x8e0
[   30.111387]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   30.116903]  ? iov_iter_init+0xc9/0x1f0
[   30.120859]  __vfs_write+0x5bc/0x880
[   30.124554]  ? kernel_read+0x120/0x120
[   30.128420]  ? kasan_check_read+0x11/0x20
[   30.132553]  ? schedule+0xef/0x430
[   30.136074]  ? rw_verify_area+0x118/0x360
[   30.140201]  vfs_write+0x1f8/0x560
[   30.143721]  ksys_write+0xf9/0x250
[   30.147241]  ? SyS_read+0x30/0x30
[   30.150675]  ? syscall_slow_exit_work+0x4f0/0x4f0
[   30.155500]  SyS_write+0x24/0x30
[   30.158844]  ? ksys_write+0x250/0x250
[   30.162624]  do_syscall_64+0x29e/0x9d0
[   30.166490]  ? kasan_check_write+0x14/0x20
[   30.170706]  ? syscall_return_slowpath+0x5c0/0x5c0
[   30.175615]  ? syscall_return_slowpath+0x30f/0x5c0
[   30.180542]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   30.185916]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   30.190762]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   30.195934] RIP: 0033:0x445a89
[   30.199108] RSP: 002b:00007f31bda35d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.206795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445a89
[   30.214047] RDX: 0000000000000003 RSI: 0000000020000b80 RDI: 0000000000000004
[   30.221294] RBP: 00000000006dac3c R08: 0000000000000000 R09: 0000000000000000
[   30.228542] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac38
[   30.235788] R13: 00007ffc87feea2f R14: 00007f31bda369c0 R15: 0030656c69662f2e
[   30.243612] Dumping ftrace buffer:
[   30.247220]    (ftrace buffer empty)
[   30.250907] Kernel Offset: disabled
[   30.254510] Rebooting in 86400 seconds..