[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.107' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.307276] md: md1 stopped. executing program executing program executing program executing program executing program executing program [ 33.415476] md: md1 stopped. executing program [ 33.466696] md: md1 stopped. [ 33.520377] ------------[ cut here ]------------ [ 33.525860] WARNING: CPU: 0 PID: 8056 at drivers/md/md.c:7190 md_ioctl+0x339f/0x4c50 [ 33.533825] Kernel panic - not syncing: panic_on_warn set ... [ 33.533825] [ 33.541196] CPU: 0 PID: 8056 Comm: syz-executor809 Not tainted 4.14.212-syzkaller #0 [ 33.549207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.559001] Call Trace: [ 33.561606] dump_stack+0x1b2/0x283 [ 33.565317] panic+0x1f9/0x42d [ 33.568526] ? add_taint.cold+0x16/0x16 [ 33.572515] ? md_ioctl+0x339f/0x4c50 [ 33.576304] ? md_ioctl+0x339f/0x4c50 [ 33.580105] __warn.cold+0x20/0x4b [ 33.583629] ? ist_end_non_atomic+0x10/0x10 [ 33.587937] ? md_ioctl+0x339f/0x4c50 [ 33.591723] report_bug+0x208/0x249 [ 33.595339] do_error_trap+0x195/0x2d0 [ 33.599231] ? math_error+0x2d0/0x2d0 [ 33.603016] ? md_ioctl+0xb38/0x4c50 [ 33.606725] ? __mutex_lock+0x360/0x1310 [ 33.610775] ? switch_mm_irqs_off+0x601/0xeb0 [ 33.615253] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.620089] invalid_op+0x1b/0x40 [ 33.623560] RIP: 0010:md_ioctl+0x339f/0x4c50 [ 33.627955] RSP: 0018:ffff888095dbfa48 EFLAGS: 00010297 [ 33.633309] RAX: ffff8880b170e140 RBX: 1ffff11012bb7f50 RCX: 0000000000000000 [ 33.640557] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880b01945e8 [ 33.647968] RBP: ffff8880b01945c0 R08: 0000000000000000 R09: 00000000000403ec [ 33.655234] R10: ffff8880b170e9c8 R11: ffff8880b170e140 R12: 0000000000000000 [ 33.662501] R13: ffff88808e36b680 R14: 0000000000000932 R15: ffff8880b0194788 [ 33.669787] ? md_ioctl+0x339f/0x4c50 [ 33.673587] ? drop_futex_key_refs+0x2e/0xa0 [ 33.678000] ? array_state_store+0x810/0x810 [ 33.682393] ? futex_wait_setup+0x260/0x260 [ 33.686697] ? futex_lock_pi_atomic+0x2e0/0x2e0 [ 33.691346] ? hash_futex+0x12/0x200 [ 33.695041] ? drop_futex_key_refs+0x2e/0xa0 [ 33.699480] ? futex_wake+0x116/0x3c0 [ 33.703282] ? __lock_acquire+0x5fc/0x3f20 [ 33.707519] ? array_state_store+0x810/0x810 [ 33.711928] blkdev_ioctl+0x540/0x1830 [ 33.715815] ? blkpg_ioctl+0x8d0/0x8d0 [ 33.719686] ? trace_hardirqs_on+0x10/0x10 [ 33.723904] ? futex_exit_release+0x220/0x220 [ 33.728413] ? fsnotify+0x974/0x11b0 [ 33.732124] block_ioctl+0xd9/0x120 [ 33.735737] ? blkdev_fallocate+0x3a0/0x3a0 [ 33.740053] do_vfs_ioctl+0x75a/0xff0 [ 33.743841] ? ioctl_preallocate+0x1a0/0x1a0 [ 33.748239] ? lock_downgrade+0x740/0x740 [ 33.752377] ? __fget+0x225/0x360 [ 33.755816] ? do_vfs_ioctl+0xff0/0xff0 [ 33.759787] ? security_file_ioctl+0x83/0xb0 [ 33.764179] SyS_ioctl+0x7f/0xb0 [ 33.767566] ? do_vfs_ioctl+0xff0/0xff0 [ 33.771529] do_syscall_64+0x1d5/0x640 [ 33.775404] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.780632] RIP: 0033:0x447369 [ 33.783801] RSP: 002b:00007fd0f3d53d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.791492] RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 0000000000447369 [ 33.798761] RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000004 [ 33.806190] RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000000 [ 33.813447] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c [ 33.820702] R13: 0000000020000000 R14: 00000000004af9e0 R15: 0000000000000003 [ 33.828642] Kernel Offset: disabled [ 33.832309] Rebooting in 86400 seconds..