[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 16.799849][ C1] random: crng init done [ 16.804294][ C1] random: 7 urandom warning(s) missed due to ratelimiting Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. executing program [ 23.858915][ T21] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 23.949034][ T21] usb 1-1: Using ep0 maxpacket: 16 [ 24.068743][ T21] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has invalid wMaxPacketSize 0 [ 24.078610][ T21] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 24.089081][ T21] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid wMaxPacketSize 0 [ 24.098886][ T21] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 0 [ 24.108679][ T21] usb 1-1: New USB device found, idVendor=0af0, idProduct=7311, bcdDevice=21.99 [ 24.117894][ T21] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 24.128689][ T21] usb 1-1: config 0 descriptor?? [ 24.170047][ T21] hso 1-1:0.0: Can't find BULK OUT endpoint [ 24.176161][ T21] ------------[ cut here ]------------ [ 24.181681][ T21] WARNING: CPU: 1 PID: 21 at net/core/dev.c:8792 rollback_registered_many+0x1ed/0xec0 [ 24.191556][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 24.200149][ T21] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.7.0-rc1-syzkaller #0 [ 24.208273][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.218332][ T21] Workqueue: usb_hub_wq hub_event [ 24.224124][ T21] Call Trace: [ 24.227392][ T21] dump_stack+0xef/0x16e [ 24.231643][ T21] ? rollback_registered_many+0x100/0xec0 [ 24.237338][ T21] panic+0x2aa/0x6e1 [ 24.241207][ T21] ? add_taint.cold+0x16/0x16 [ 24.245873][ T21] ? printk+0xba/0xed [ 24.250538][ T21] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 24.255981][ T21] ? __warn.cold+0x14/0x30 [ 24.260393][ T21] ? __warn+0xd5/0x1c8 [ 24.264462][ T21] ? rollback_registered_many+0x1ed/0xec0 [ 24.270160][ T21] __warn.cold+0x2f/0x30 [ 24.274393][ T21] ? rollback_registered_many+0x1ed/0xec0 [ 24.280184][ T21] report_bug+0x27b/0x2f0 [ 24.284932][ T21] do_error_trap+0x12b/0x1e0 [ 24.289503][ T21] ? rollback_registered_many+0x1ed/0xec0 [ 24.295362][ T21] do_invalid_op+0x32/0x40 [ 24.299770][ T21] ? rollback_registered_many+0x1ed/0xec0 [ 24.305511][ T21] invalid_op+0x23/0x30 [ 24.309656][ T21] RIP: 0010:rollback_registered_many+0x1ed/0xec0 [ 24.315998][ T21] Code: 05 00 00 31 ff 44 89 fe e8 10 02 71 fc 45 84 ff 0f 85 49 ff ff ff e8 d2 00 71 fc 0f 1f 44 00 00 e8 c8 00 71 fc e8 c3 00 71 fc <0f> 0b 48 89 ef e8 99 57 1d fd 31 ff 89 c5 89 c6 e8 de 01 71 fc 40 [ 24.336380][ T21] RSP: 0018:ffff8881da316f30 EFLAGS: 00010293 [ 24.342423][ T21] RAX: ffff8881da246300 RBX: ffff8881cd366000 RCX: ffffffff84cf39d0 [ 24.350385][ T21] RDX: 0000000000000000 RSI: ffffffff84cf39ed RDI: 0000000000000001 [ 24.358334][ T21] RBP: ffff8881cd366068 R08: ffff8881da246300 R09: fffffbfff0f8c1b1 [ 24.366802][ T21] R10: ffffffff87c60d87 R11: fffffbfff0f8c1b0 R12: ffff8881da317078 [ 24.374861][ T21] R13: dffffc0000000000 R14: ffff8881da317010 R15: 0000000000000000 [ 24.382830][ T21] ? rollback_registered_many+0x1d0/0xec0 [ 24.388537][ T21] ? rollback_registered_many+0x1ed/0xec0 [ 24.394237][ T21] ? netif_set_real_num_tx_queues+0x710/0x710 [ 24.400717][ T21] ? __mutex_lock+0x42b/0x1360 [ 24.405461][ T21] ? find_held_lock+0x2d/0x110 [ 24.410208][ T21] ? fs_reclaim_release+0xa/0x20 [ 24.415656][ T21] ? unregister_netdev+0xe/0x20 [ 24.420521][ T21] ? mutex_trylock+0x2c0/0x2c0 [ 24.425269][ T21] rollback_registered+0xf2/0x1c0 [ 24.430286][ T21] ? rollback_registered_many+0xec0/0xec0 [ 24.436346][ T21] ? _dev_crit+0x109/0x109 [ 24.440742][ T21] ? kasan_unpoison_shadow+0x30/0x40 [ 24.446008][ T21] unregister_netdevice_queue+0x1d7/0x2b0 [ 24.451820][ T21] unregister_netdev+0x18/0x20 [ 24.456570][ T21] hso_free_net_device+0xff/0x300 [ 24.461580][ T21] hso_create_net_device+0x76d/0x9c0 [ 24.466860][ T21] hso_probe+0x1019/0x1b7d [ 24.471259][ T21] usb_probe_interface+0x310/0x800 [ 24.476366][ T21] ? usb_probe_device+0x230/0x230 [ 24.481384][ T21] really_probe+0x290/0xac0 [ 24.485869][ T21] driver_probe_device+0x223/0x350 [ 24.490987][ T21] __device_attach_driver+0x1d1/0x290 [ 24.496373][ T21] ? driver_allows_async_probing+0x160/0x160 [ 24.502338][ T21] bus_for_each_drv+0x162/0x1e0 [ 24.507348][ T21] ? bus_rescan_devices+0x20/0x20 [ 24.512374][ T21] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 24.518161][ T21] ? lockdep_hardirqs_on+0x3c7/0x5d0 [ 24.523440][ T21] __device_attach+0x21a/0x390 [ 24.528199][ T21] ? device_bind_driver+0xd0/0xd0 [ 24.533204][ T21] bus_probe_device+0x1e4/0x290 [ 24.538210][ T21] device_add+0x1367/0x1c20 [ 24.542708][ T21] ? wait_for_completion+0x280/0x280 [ 24.547997][ T21] ? device_link_remove+0x110/0x110 [ 24.553192][ T21] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 24.558995][ T21] usb_set_configuration+0xed4/0x1850 [ 24.564524][ T21] usb_generic_driver_probe+0x9d/0xe0 [ 24.571374][ T21] usb_probe_device+0xd9/0x230 [ 24.576208][ T21] ? usb_suspend+0x600/0x600 [ 24.580790][ T21] really_probe+0x290/0xac0 [ 24.585384][ T21] driver_probe_device+0x223/0x350 [ 24.590495][ T21] __device_attach_driver+0x1d1/0x290 [ 24.595881][ T21] ? driver_allows_async_probing+0x160/0x160 [ 24.601869][ T21] bus_for_each_drv+0x162/0x1e0 [ 24.606899][ T21] ? bus_rescan_devices+0x20/0x20 [ 24.611923][ T21] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 24.617723][ T21] ? lockdep_hardirqs_on+0x3c7/0x5d0 [ 24.623620][ T21] __device_attach+0x21a/0x390 [ 24.628456][ T21] ? device_bind_driver+0xd0/0xd0 [ 24.633465][ T21] bus_probe_device+0x1e4/0x290 [ 24.638591][ T21] device_add+0x1367/0x1c20 [ 24.643279][ T21] ? device_link_remove+0x110/0x110 [ 24.648464][ T21] usb_new_device.cold+0x552/0xf6e [ 24.653566][ T21] ? hub_disconnect+0x4a0/0x4a0 [ 24.658500][ T21] ? mark_held_locks+0x9f/0xe0 [ 24.663271][ T21] ? _raw_spin_unlock_irq+0x1f/0x30 [ 24.669003][ T21] hub_event+0x226d/0x43c0 [ 24.673567][ T21] ? hub_port_debounce+0x350/0x350 [ 24.678670][ T21] ? umh_clean_and_save_pid+0x1/0xd0 [ 24.683970][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 24.689516][ T21] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 24.694817][ T21] ? _raw_spin_unlock_irq+0x1f/0x30 [ 24.700002][ T21] process_one_work+0x965/0x1630 [ 24.704941][ T21] ? lock_release+0x720/0x720 [ 24.709614][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 24.715062][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 24.719989][ T21] worker_thread+0x96/0xe20 [ 24.724734][ T21] ? process_one_work+0x1630/0x1630 [ 24.729962][ T21] kthread+0x326/0x430 [ 24.734066][ T21] ? kthread_create_on_node+0xf0/0xf0 [ 24.739430][ T21] ret_from_fork+0x24/0x30 [ 24.744977][ T21] Kernel Offset: disabled [ 24.749481][ T21] Rebooting in 86400 seconds..