[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.666617] audit: type=1800 audit(1555025018.814:25): pid=5659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0 [ 53.685738] audit: type=1800 audit(1555025018.814:26): pid=5659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [ 53.707082] audit: type=1800 audit(1555025018.814:27): pid=5659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 64.017971] IPVS: ftp: loaded support on port[0] = 21 [ 64.540522] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 64.780507] usb 1-1: Using ep0 maxpacket: 8 [ 64.910538] usb 1-1: config 0 has an invalid interface number: 45 but max is 0 [ 64.920544] usb 1-1: config 0 has no interface number 0 [ 64.925956] usb 1-1: config 0 interface 45 altsetting 0 has an invalid endpoint with address 0x19, skipping [ 64.936860] usb 1-1: New USB device found, idVendor=06f8, idProduct=e032, bcdDevice=cf.b8 [ 64.960444] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 64.973009] usb 1-1: config 0 descriptor?? [ 65.024643] r8712u: register rtl8712_netdev_ops to netdev_ops [ 65.036033] usb 1-1: r8712u: USB_SPEED_HIGH with 0 endpoints [ 65.210519] usb 1-1: r8712u: Boot from EFUSE: Autoload Failed [ 65.227307] usb 1-1: r8712u: MAC Address from efuse = 00:e0:4c:87:00:00 [ 65.245218] usb 1-1: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin" [ 65.254125] usb 1-1: USB disconnect, device number 2 [ 65.265244] usb 1-1: Direct firmware load for rtlwifi/rtl8712u.bin failed with error -2 [ 65.274672] usb 1-1: r8712u: Firmware request failed [ 65.293550] WARNING: CPU: 0 PID: 575 at net/core/dev.c:8152 rollback_registered_many+0x1f3/0xe70 [ 65.317600] Kernel panic - not syncing: panic_on_warn set ... [ 65.325527] CPU: 0 PID: 575 Comm: kworker/0:4 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 [ 65.334310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.345593] Workqueue: usb_hub_wq hub_event [ 65.350835] Call Trace: [ 65.353462] dump_stack+0xe8/0x16e [ 65.357393] ? rollback_registered_many+0x190/0xe70 [ 65.376106] panic+0x29d/0x5f2 [ 65.379308] ? __warn_printk+0xf8/0xf8 [ 65.383358] ? rollback_registered_many+0x1f3/0xe70 [ 65.388382] ? __probe_kernel_read+0x171/0x1b0 [ 65.392953] ? __warn.cold+0x5/0x48 [ 65.396583] ? __warn+0xe9/0x1d0 [ 65.400167] ? rollback_registered_many+0x1f3/0xe70 [ 65.416228] __warn.cold+0x20/0x48 [ 65.420836] ? rollback_registered_many+0x1f3/0xe70 [ 65.426346] report_bug+0x262/0x2a0 [ 65.429970] do_error_trap+0x130/0x1f0 [ 65.433852] ? rollback_registered_many+0x1f3/0xe70 [ 65.446354] do_invalid_op+0x37/0x40 [ 65.454437] ? rollback_registered_many+0x1f3/0xe70 [ 65.460512] invalid_op+0x14/0x20 [ 65.463971] RIP: 0010:rollback_registered_many+0x1f3/0xe70 [ 65.469606] Code: 05 00 00 31 ff 44 89 fe e8 5a 15 f3 f4 45 84 ff 0f 85 49 ff ff ff e8 1c 14 f3 f4 0f 1f 44 00 00 e8 12 14 f3 f4 e8 0d 14 f3 f4 <0f> 0b 4c 89 e7 e8 33 72 f2 f6 31 ff 41 89 c4 89 c6 e8 27 15 f3 f4 [ 65.488738] RSP: 0018:ffff88809d087698 EFLAGS: 00010293 [ 65.494896] RAX: ffff88809d058000 RBX: ffff888096240000 RCX: ffffffff8c7eb146 [ 65.503297] RDX: 0000000000000000 RSI: ffffffff8c7eb163 RDI: 0000000000000001 [ 65.512347] RBP: ffff88809d0877c8 R08: ffff88809d058000 R09: fffffbfff2708111 [ 65.519618] R10: fffffbfff2708110 R11: ffffffff93840887 R12: ffff888096240070 [ 65.529752] R13: dffffc0000000000 R14: ffff88809d087758 R15: 0000000000000000 [ 65.538707] ? rollback_registered_many+0x1d6/0xe70 [ 65.543819] ? rollback_registered_many+0x1f3/0xe70 [ 65.549014] ? rollback_registered_many+0x1f3/0xe70 [ 65.554042] ? generic_xdp_install+0x490/0x490 [ 65.558869] ? __mutex_lock+0x4af/0x12b0 [ 65.563521] ? unregister_netdev+0x13/0x30 [ 65.567873] ? _raw_spin_unlock_irq+0x29/0x40 [ 65.572388] ? mutex_trylock+0x1b0/0x1b0 [ 65.576444] rollback_registered+0xf7/0x1c0 [ 65.580761] ? rollback_registered_many+0xe70/0xe70 [ 65.591574] ? wake_up_q+0xf0/0xf0 [ 65.595118] unregister_netdevice_queue+0x1dc/0x2b0 [ 65.600435] unregister_netdev+0x1d/0x30 [ 65.604503] r871xu_dev_remove+0xe7/0x223 [ 65.608655] usb_unbind_interface+0x1c9/0x980 [ 65.614849] ? usb_autoresume_device+0x60/0x60 [ 65.619426] device_release_driver_internal+0x436/0x4f0 [ 65.624908] bus_remove_device+0x302/0x5c0 [ 65.640487] device_del+0x467/0xb90 [ 65.644127] ? mark_held_locks+0x9f/0xe0 [ 65.648429] ? __device_links_no_driver+0x240/0x240 [ 65.653590] ? lockdep_hardirqs_on+0x37e/0x580 [ 65.660180] ? remove_intf_ep_devs+0x144/0x1d0 [ 65.665333] usb_disable_device+0x242/0x790 [ 65.670008] usb_disconnect+0x298/0x870 [ 65.674931] hub_event+0xcd2/0x3b00 [ 65.678741] ? mark_held_locks+0xe0/0xe0 [ 65.690665] ? hub_port_debounce+0x350/0x350 [ 65.695115] ? _raw_spin_unlock_irq+0x29/0x40 [ 65.699626] process_one_work+0x90f/0x1580 [ 65.716352] ? wq_pool_ids_show+0x300/0x300 [ 65.721023] ? do_raw_spin_lock+0x11f/0x290 [ 65.725347] worker_thread+0x7b0/0xe20 [ 65.729372] ? process_one_work+0x1580/0x1580 [ 65.734058] kthread+0x313/0x420 [ 65.739085] ? kthread_park+0x1a0/0x1a0 [ 65.743090] ret_from_fork+0x3a/0x50 [ 65.748164] Kernel Offset: disabled [ 65.754097] Rebooting in 86400 seconds..