[ 42.732307] audit: type=1800 audit(1555244048.791:27): pid=5152 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 42.732327] audit: type=1800 audit(1555244048.791:28): pid=5152 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.565010] audit: type=1800 audit(1555244049.651:29): pid=5152 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 43.584743] audit: type=1800 audit(1555244049.651:30): pid=5152 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.014298] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 55.254235] usb 1-1: Using ep0 maxpacket: 8 [ 55.374339] usb 1-1: config 0 has an invalid interface number: 39 but max is 0 [ 55.381884] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 55.391528] usb 1-1: config 0 has no interface number 0 [ 55.397246] usb 1-1: New USB device found, idVendor=1c4f, idProduct=3000, bcdDevice=31.d3 [ 55.405636] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 55.414909] usb 1-1: config 0 descriptor?? [ 55.456252] WARNING: CPU: 1 PID: 21 at kernel/workqueue.c:3030 __flush_work+0x728/0x820 [ 55.464520] Kernel panic - not syncing: panic_on_warn set ... [ 55.470571] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 [ 55.478713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.488171] Workqueue: usb_hub_wq hub_event [ 55.492482] Call Trace: [ 55.495182] dump_stack+0xe8/0x16e [ 55.498832] ? __flush_work+0x6d0/0x820 [ 55.502850] panic+0x29d/0x5f2 [ 55.506050] ? __warn_printk+0xf8/0xf8 [ 55.509948] ? __flush_work+0x728/0x820 [ 55.513935] ? __probe_kernel_read+0x171/0x1b0 [ 55.518581] ? __warn.cold+0x5/0x48 [ 55.522199] ? __warn+0xe9/0x1d0 [ 55.525713] ? __flush_work+0x728/0x820 [ 55.529691] __warn.cold+0x20/0x48 [ 55.533220] ? ftrace_graph_ret_addr+0x104/0x170 [ 55.538138] ? __flush_work+0x728/0x820 [ 55.542257] report_bug+0x262/0x2a0 [ 55.545892] do_error_trap+0x130/0x1f0 [ 55.549776] ? __flush_work+0x728/0x820 [ 55.553815] do_invalid_op+0x37/0x40 [ 55.557535] ? __flush_work+0x728/0x820 [ 55.561504] invalid_op+0x14/0x20 [ 55.564957] RIP: 0010:__flush_work+0x728/0x820 [ 55.569531] Code: ff e8 3c 37 27 00 0f 0b 45 31 e4 e9 7e fd ff ff e8 2d 37 27 00 4c 89 ef 45 31 e4 e8 f2 a6 bb 0c e9 69 fd ff ff e8 18 37 27 00 <0f> 0b 45 31 e4 e9 5a fd ff ff e8 b9 47 5e 00 e9 78 fc ff ff e8 cf [ 55.588514] RSP: 0018:ffff8880a85bee48 EFLAGS: 00010293 [ 55.593862] RAX: ffff8880a85b1880 RBX: ffff8880969896b0 RCX: dffffc0000000000 [ 55.601129] RDX: 0000000000000000 RSI: ffffffff814a8e58 RDI: 0000000000000001 [ 55.608458] RBP: ffff8880a85befb0 R08: ffff8880a85b1880 R09: 0000000000000000 [ 55.615732] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 55.623152] R13: 0000000000000001 R14: 0000000000000200 R15: ffff8880969896c8 [ 55.630443] ? __flush_work+0x728/0x820 [ 55.634418] ? __flush_work+0x728/0x820 [ 55.638447] ? insert_work+0x390/0x390 [ 55.642503] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 55.647607] ? number+0x82a/0xb00 [ 55.651056] ? __sanitizer_cov_trace_switch+0x50/0x90 [ 55.656345] ? put_dec+0xd0/0xd0 [ 55.659870] ? format_decode+0x26c/0xb40 [ 55.663948] ? mark_held_locks+0x9f/0xe0 [ 55.668014] __cancel_work_timer+0x326/0x450 [ 55.672537] ? cancel_delayed_work+0x220/0x220 [ 55.677115] ? _cond_resched+0x15/0x30 [ 55.680986] ? usb_kill_urb+0x19d/0x2c0 [ 55.684956] uvc_ctrl_cleanup_device+0x27/0x488 [ 55.689627] ? rcu_read_lock_sched_held+0x10f/0x130 [ 55.694627] ? uvc_delete+0x26/0x2f0 [ 55.698324] ? kfree+0x21d/0x290 [ 55.701692] uvc_delete+0x2e/0x2f0 [ 55.705229] uvc_probe+0xfa5/0x6588 [ 55.708860] ? __pm_runtime_set_status+0x703/0xa10 [ 55.713895] ? usb_probe_interface+0x5fe/0x820 [ 55.718584] ? mark_held_locks+0x9f/0xe0 [ 55.722644] ? usb_probe_interface+0x31d/0x820 [ 55.727227] usb_probe_interface+0x31d/0x820 [ 55.731636] ? usb_probe_device+0x150/0x150 [ 55.736003] really_probe+0x2da/0xb10 [ 55.739798] driver_probe_device+0x21d/0x350 [ 55.744211] __device_attach_driver+0x1d8/0x290 [ 55.748882] ? driver_allows_async_probing+0x160/0x160 [ 55.754292] bus_for_each_drv+0x163/0x1e0 [ 55.758440] ? bus_rescan_devices+0x30/0x30 [ 55.762926] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 55.768032] ? lockdep_hardirqs_on+0x37e/0x580 [ 55.772668] __device_attach+0x223/0x3a0 [ 55.776785] ? device_bind_driver+0xe0/0xe0 [ 55.781112] ? kobject_uevent_env+0x295/0x13d0 [ 55.785699] bus_probe_device+0x1f1/0x2a0 [ 55.789890] ? blocking_notifier_call_chain+0x59/0xb0 [ 55.795082] device_add+0xad2/0x16e0 [ 55.798790] ? get_device_parent.isra.0+0x560/0x560 [ 55.803922] usb_set_configuration+0xdf7/0x1740 [ 55.808749] generic_probe+0xa2/0xda [ 55.812556] usb_probe_device+0xc0/0x150 [ 55.816618] ? usb_suspend+0x5f0/0x5f0 [ 55.820634] really_probe+0x2da/0xb10 [ 55.824500] driver_probe_device+0x21d/0x350 [ 55.828916] __device_attach_driver+0x1d8/0x290 [ 55.833674] ? driver_allows_async_probing+0x160/0x160 [ 55.839172] bus_for_each_drv+0x163/0x1e0 [ 55.843313] ? bus_rescan_devices+0x30/0x30 [ 55.847950] ? _raw_spin_unlock_irqrestore+0x4b/0x60 [ 55.853076] ? lockdep_hardirqs_on+0x37e/0x580 [ 55.857703] __device_attach+0x223/0x3a0 [ 55.861780] ? device_bind_driver+0xe0/0xe0 [ 55.866098] ? kobject_uevent_env+0x295/0x13d0 [ 55.870679] bus_probe_device+0x1f1/0x2a0 [ 55.874818] ? blocking_notifier_call_chain+0x59/0xb0 [ 55.880022] device_add+0xad2/0x16e0 [ 55.883885] ? get_device_parent.isra.0+0x560/0x560 [ 55.888954] usb_new_device.cold+0x537/0xccf [ 55.893352] hub_event+0x138e/0x3b00 [ 55.897075] ? hub_port_debounce+0x350/0x350 [ 55.901492] ? _raw_spin_unlock_irq+0x29/0x40 [ 55.905992] process_one_work+0x90f/0x1580 [ 55.910232] ? wq_pool_ids_show+0x300/0x300 [ 55.914621] ? do_raw_spin_lock+0x11f/0x290 [ 55.918947] worker_thread+0x9b/0xe20 [ 55.922807] ? process_one_work+0x1580/0x1580 [ 55.927297] kthread+0x313/0x420 [ 55.930655] ? kthread_park+0x1a0/0x1a0 [ 55.934624] ret_from_fork+0x3a/0x50 [ 55.939467] Kernel Offset: disabled [ 55.943160] Rebooting in 86400 seconds..