INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.498956][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 29.738873][ T12] usb 1-1: Using ep0 maxpacket: 32 [ 29.858979][ T12] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 29.868297][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.877718][ T12] usb 1-1: config 0 descriptor?? [ 30.139091][ T12] hso 1-1:0.0: Can't find BULK IN endpoint [ 30.145253][ T12] ------------[ cut here ]------------ [ 30.150783][ T12] WARNING: CPU: 0 PID: 12 at net/core/dev.c:8709 rollback_registered_many+0x1de/0xea0 [ 30.160316][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 30.166942][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-syzkaller #0 [ 30.174724][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.191296][ T12] Workqueue: usb_hub_wq hub_event [ 30.196360][ T12] Call Trace: [ 30.199665][ T12] dump_stack+0xef/0x16e [ 30.203938][ T12] ? rollback_registered_many+0x120/0xea0 [ 30.209642][ T12] panic+0x2aa/0x6e1 [ 30.213524][ T12] ? add_taint.cold+0x16/0x16 [ 30.218178][ T12] ? printk+0xba/0xed [ 30.222156][ T12] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 30.227726][ T12] ? __warn.cold+0x14/0x30 [ 30.232124][ T12] ? __warn+0xd5/0x1c8 [ 30.236190][ T12] ? rollback_registered_many+0x1de/0xea0 [ 30.241907][ T12] __warn.cold+0x2f/0x30 [ 30.246151][ T12] ? rollback_registered_many+0x1de/0xea0 [ 30.251853][ T12] report_bug+0x27b/0x2f0 [ 30.256176][ T12] do_error_trap+0x12b/0x1e0 [ 30.260751][ T12] ? rollback_registered_many+0x1de/0xea0 [ 30.266516][ T12] do_invalid_op+0x32/0x40 [ 30.270927][ T12] ? rollback_registered_many+0x1de/0xea0 [ 30.276745][ T12] invalid_op+0x23/0x30 [ 30.280943][ T12] RIP: 0010:rollback_registered_many+0x1de/0xea0 [ 30.287252][ T12] Code: 84 c0 74 06 0f 8e c1 0a 00 00 44 0f b6 bb 28 05 00 00 31 ff 44 89 fe e8 80 55 89 fc 45 84 ff 0f 85 49 ff ff ff e8 42 54 89 fc <0f> 0b 48 89 ef e8 18 47 31 fd 31 ff 89 c5 89 c6 e8 5d 55 89 fc 40 [ 30.306851][ T12] RSP: 0018:ffff8881da627000 EFLAGS: 00010293 [ 30.312898][ T12] RAX: ffff8881da611880 RBX: ffff8881cf8ec000 RCX: ffffffff84b529b0 [ 30.320865][ T12] RDX: 0000000000000000 RSI: ffffffff84b529be RDI: 0000000000000001 [ 30.328926][ T12] RBP: ffff8881cf8ec068 R08: ffff8881da611880 R09: fffffbfff0ee4565 [ 30.336898][ T12] R10: fffffbfff0ee4564 R11: ffffffff87722b27 R12: ffff8881da627150 [ 30.344993][ T12] R13: ffff8881da6270e8 R14: dffffc0000000000 R15: 0000000000000000 [ 30.352985][ T12] ? rollback_registered_many+0x1d0/0xea0 [ 30.358710][ T12] ? rollback_registered_many+0x1de/0xea0 [ 30.364409][ T12] ? unregister_netdev+0xe/0x20 [ 30.369237][ T12] ? generic_xdp_install+0x490/0x490 [ 30.374510][ T12] ? __mutex_lock+0x42b/0x1360 [ 30.379265][ T12] ? find_held_lock+0x2d/0x110 [ 30.384001][ T12] ? unregister_netdev+0xe/0x20 [ 30.388852][ T12] ? mutex_trylock+0x2e0/0x2e0 [ 30.393615][ T12] rollback_registered+0xf2/0x1c0 [ 30.398639][ T12] ? rollback_registered_many+0xea0/0xea0 [ 30.404512][ T12] ? _dev_crit+0x109/0x109 [ 30.408908][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 30.414171][ T12] unregister_netdevice_queue+0x1d7/0x2b0 [ 30.419879][ T12] unregister_netdev+0x18/0x20 [ 30.424623][ T12] hso_free_net_device+0xff/0x300 [ 30.429624][ T12] hso_create_net_device+0x76d/0x9c0 [ 30.434904][ T12] hso_probe+0x28d/0x1b7b [ 30.439233][ T12] usb_probe_interface+0x305/0x7a0 [ 30.444330][ T12] ? usb_probe_device+0x100/0x100 [ 30.449368][ T12] really_probe+0x281/0x6d0 [ 30.453872][ T12] driver_probe_device+0x104/0x210 [ 30.458960][ T12] __device_attach_driver+0x1c2/0x220 [ 30.464393][ T12] ? driver_allows_async_probing+0x160/0x160 [ 30.470368][ T12] bus_for_each_drv+0x162/0x1e0 [ 30.475223][ T12] ? bus_rescan_devices+0x20/0x20 [ 30.480234][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.486039][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 30.491304][ T12] __device_attach+0x217/0x360 [ 30.496181][ T12] ? device_bind_driver+0xd0/0xd0 [ 30.501191][ T12] bus_probe_device+0x1e4/0x290 [ 30.506055][ T12] device_add+0x1480/0x1c20 [ 30.510579][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 30.515878][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 30.521947][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.527743][ T12] usb_set_configuration+0xe67/0x1740 [ 30.533271][ T12] generic_probe+0x9d/0xd5 [ 30.537697][ T12] usb_probe_device+0x99/0x100 [ 30.542460][ T12] ? usb_suspend+0x620/0x620 [ 30.547040][ T12] really_probe+0x281/0x6d0 [ 30.551593][ T12] driver_probe_device+0x104/0x210 [ 30.556844][ T12] __device_attach_driver+0x1c2/0x220 [ 30.562418][ T12] ? driver_allows_async_probing+0x160/0x160 [ 30.568566][ T12] bus_for_each_drv+0x162/0x1e0 [ 30.573549][ T12] ? bus_rescan_devices+0x20/0x20 [ 30.578562][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 30.584364][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 30.589644][ T12] __device_attach+0x217/0x360 [ 30.594424][ T12] ? device_bind_driver+0xd0/0xd0 [ 30.599430][ T12] bus_probe_device+0x1e4/0x290 [ 30.604267][ T12] device_add+0x1480/0x1c20 [ 30.608769][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 30.614856][ T12] usb_new_device.cold+0x6a4/0xe79 [ 30.620012][ T12] hub_event+0x1e59/0x3860 [ 30.624459][ T12] ? hub_port_debounce+0x260/0x260 [ 30.629568][ T12] ? find_held_lock+0x2d/0x110 [ 30.634381][ T12] ? mark_held_locks+0xe0/0xe0 [ 30.639138][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 30.644666][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 30.649948][ T12] process_one_work+0x92b/0x1530 [ 30.654878][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 30.660227][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 30.665284][ T12] worker_thread+0x96/0xe20 [ 30.669770][ T12] ? process_one_work+0x1530/0x1530 [ 30.674963][ T12] kthread+0x318/0x420 [ 30.679011][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 30.684385][ T12] ret_from_fork+0x24/0x30 [ 30.689862][ T12] Kernel Offset: disabled [ 30.694227][ T12] Rebooting in 86400 seconds..