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 '10.128.10.4' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.574886] hfs: can't find a HFS filesystem on dev loop0 [ 29.580930] WARNING: CPU: 0 PID: 4504 at fs/attr.c:213 notify_change+0xd94/0x10c0 [ 29.588575] Kernel panic - not syncing: panic_on_warn set ... [ 29.588575] [ 29.595957] CPU: 0 PID: 4504 Comm: syzkaller788011 Not tainted 4.17.0-rc1+ #8 [ 29.603241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.612598] Call Trace: [ 29.615196] dump_stack+0x1b9/0x294 [ 29.618835] ? dump_stack_print_info.cold.2+0x52/0x52 [ 29.624042] ? notify_change+0xd40/0x10c0 [ 29.628189] panic+0x22f/0x4de [ 29.631363] ? add_taint.cold.5+0x16/0x16 [ 29.635493] ? __warn.cold.8+0x148/0x1b3 [ 29.639533] ? __warn.cold.8+0x117/0x1b3 [ 29.643575] ? notify_change+0xd94/0x10c0 [ 29.647712] __warn.cold.8+0x163/0x1b3 [ 29.651581] ? notify_change+0xd94/0x10c0 [ 29.655710] report_bug+0x252/0x2d0 [ 29.659319] do_error_trap+0x1de/0x490 [ 29.663186] ? math_error+0x420/0x420 [ 29.666971] ? kasan_check_read+0x11/0x20 [ 29.671099] ? do_raw_spin_unlock+0x9e/0x2e0 [ 29.675489] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 29.680056] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.684883] do_invalid_op+0x1b/0x20 [ 29.688576] invalid_op+0x14/0x20 [ 29.692015] RIP: 0010:notify_change+0xd94/0x10c0 [ 29.696765] RSP: 0018:ffff8801d958f880 EFLAGS: 00010293 [ 29.702107] RAX: ffff8801d913a340 RBX: ffff8801d2efa100 RCX: ffffffff81c77718 [ 29.709356] RDX: 0000000000000000 RSI: ffffffff81c78354 RDI: 0000000000000007 [ 29.716604] RBP: ffff8801d958f950 R08: ffff8801d913a340 R09: ffffed003a5df43c [ 29.723867] R10: ffffed003a5df43c R11: ffff8801d2efa1e7 R12: 0000000000004200 [ 29.731122] R13: ffff8801d958f990 R14: ffff8801d4fa8e00 R15: 1ffff1003b2b1f1c [ 29.738385] ? notify_change+0x158/0x10c0 [ 29.742515] ? notify_change+0xd94/0x10c0 [ 29.746653] ? setattr_prepare+0x6b0/0x6b0 [ 29.750882] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 29.756405] ? security_inode_need_killpriv+0x80/0xa0 [ 29.761579] file_remove_privs+0x2bf/0x530 [ 29.765810] ? generic_update_time+0x420/0x420 [ 29.770387] ? blk_lld_busy+0x70/0x70 [ 29.774173] ? locks_remove_posix+0x489/0x890 [ 29.778651] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 29.783650] ? expand_files.part.8+0x56f/0x9a0 [ 29.788219] ? do_lock_file_wait.part.32+0x240/0x240 [ 29.793304] ? kasan_check_read+0x11/0x20 [ 29.797467] __generic_file_write_iter+0x169/0x630 [ 29.802386] blkdev_write_iter+0x233/0x420 [ 29.806602] ? blkdev_close+0xb0/0xb0 [ 29.810388] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 29.815905] ? iov_iter_init+0xc9/0x1f0 [ 29.819865] __vfs_write+0x64d/0x960 [ 29.823559] ? __fget_light+0x2ef/0x430 [ 29.827513] ? kernel_read+0x120/0x120 [ 29.831381] ? kasan_check_read+0x11/0x20 [ 29.835512] ? __lock_is_held+0xb5/0x140 [ 29.839556] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 29.844734] ? rw_verify_area+0x118/0x360 [ 29.848872] vfs_write+0x1f8/0x560 [ 29.852398] ksys_write+0xf9/0x250 [ 29.855920] ? __ia32_sys_read+0xb0/0xb0 [ 29.859964] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 29.864813] __x64_sys_write+0x73/0xb0 [ 29.868688] do_syscall_64+0x1b1/0x800 [ 29.872557] ? syscall_return_slowpath+0x5c0/0x5c0 [ 29.877467] ? syscall_return_slowpath+0x30f/0x5c0 [ 29.882380] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 29.887738] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.892564] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 29.897731] RIP: 0033:0x440959 [ 29.900898] RSP: 002b:00007ffee892eb48 EFLAGS: 00000217 ORIG_RAX: 0000000000000001 [ 29.908584] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440959 [ 29.915835] RDX: 0000000000000158 RSI: 00000000200004c0 RDI: 0000000000000005 [ 29.923083] RBP: 00000000006cb018 R08: 0000000020000780 R09: 00000000004002c8 [ 29.930385] R10: 000000000000000a R11: 0000000000000217 R12: 0000000000402140 [ 29.937632] R13: 00000000004021d0 R14: 0000000000000000 R15: 0000000000000000 [ 29.945528] Dumping ftrace buffer: [ 29.949157] (ftrace buffer empty) [ 29.952857] Kernel Offset: disabled [ 29.956477] Rebooting in 86400 seconds..