[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 15.182796][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.331796][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 24.571786][ T12] usb 1-1: Using ep0 maxpacket: 32 [ 24.691881][ T12] usb 1-1: config 0 has an invalid interface number: 15 but max is 0 [ 24.700166][ T12] usb 1-1: config 0 has no interface number 0 [ 24.706438][ T12] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 24.715611][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 24.724827][ T12] usb 1-1: config 0 descriptor?? [ 24.981984][ T12] hso 1-1:0.15: Can't find BULK IN endpoint [ 24.988564][ T12] ------------[ cut here ]------------ [ 24.994071][ T12] WARNING: CPU: 0 PID: 12 at net/core/dev.c:8709 rollback_registered_many+0x1de/0xea0 [ 25.003585][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 25.010150][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-syzkaller #0 [ 25.017961][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.028001][ T12] Workqueue: usb_hub_wq hub_event [ 25.033010][ T12] Call Trace: [ 25.036293][ T12] dump_stack+0xef/0x16e [ 25.040534][ T12] ? rollback_registered_many+0x120/0xea0 [ 25.046240][ T12] panic+0x2aa/0x6e1 [ 25.050112][ T12] ? add_taint.cold+0x16/0x16 [ 25.054764][ T12] ? printk+0xba/0xed [ 25.058722][ T12] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 25.064169][ T12] ? __warn.cold+0x14/0x30 [ 25.068560][ T12] ? __warn+0xd5/0x1c8 [ 25.072604][ T12] ? rollback_registered_many+0x1de/0xea0 [ 25.078469][ T12] __warn.cold+0x2f/0x30 [ 25.082685][ T12] ? rollback_registered_many+0x1de/0xea0 [ 25.088378][ T12] report_bug+0x27b/0x2f0 [ 25.092687][ T12] do_error_trap+0x12b/0x1e0 [ 25.097266][ T12] ? rollback_registered_many+0x1de/0xea0 [ 25.103045][ T12] do_invalid_op+0x32/0x40 [ 25.107448][ T12] ? rollback_registered_many+0x1de/0xea0 [ 25.113143][ T12] invalid_op+0x23/0x30 [ 25.117275][ T12] RIP: 0010:rollback_registered_many+0x1de/0xea0 [ 25.123576][ 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 [ 25.143168][ T12] RSP: 0018:ffff8881da627000 EFLAGS: 00010293 [ 25.149207][ T12] RAX: ffff8881da611880 RBX: ffff8881d4fe2000 RCX: ffffffff84b529b0 [ 25.158468][ T12] RDX: 0000000000000000 RSI: ffffffff84b529be RDI: 0000000000000001 [ 25.166434][ T12] RBP: ffff8881d4fe2068 R08: ffff8881da611880 R09: fffffbfff0ee4565 [ 25.174386][ T12] R10: fffffbfff0ee4564 R11: ffffffff87722b27 R12: ffff8881da627150 [ 25.182339][ T12] R13: ffff8881da6270e8 R14: dffffc0000000000 R15: 0000000000000000 [ 25.190358][ T12] ? rollback_registered_many+0x1d0/0xea0 [ 25.196060][ T12] ? rollback_registered_many+0x1de/0xea0 [ 25.201900][ T12] ? unregister_netdev+0xe/0x20 [ 25.206731][ T12] ? generic_xdp_install+0x490/0x490 [ 25.211994][ T12] ? __mutex_lock+0x42b/0x1360 [ 25.216736][ T12] ? find_held_lock+0x2d/0x110 [ 25.221478][ T12] ? unregister_netdev+0xe/0x20 [ 25.226306][ T12] ? mutex_trylock+0x2e0/0x2e0 [ 25.231051][ T12] rollback_registered+0xf2/0x1c0 [ 25.236060][ T12] ? rollback_registered_many+0xea0/0xea0 [ 25.241789][ T12] ? _dev_crit+0x109/0x109 [ 25.246187][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 25.251447][ T12] unregister_netdevice_queue+0x1d7/0x2b0 [ 25.257140][ T12] unregister_netdev+0x18/0x20 [ 25.261880][ T12] hso_free_net_device+0xff/0x300 [ 25.266881][ T12] hso_create_net_device+0x76d/0x9c0 [ 25.272149][ T12] hso_probe+0x28d/0x1b7b [ 25.276454][ T12] usb_probe_interface+0x305/0x7a0 [ 25.281541][ T12] ? usb_probe_device+0x100/0x100 [ 25.286541][ T12] really_probe+0x281/0x6d0 [ 25.291019][ T12] driver_probe_device+0x104/0x210 [ 25.296124][ T12] __device_attach_driver+0x1c2/0x220 [ 25.301485][ T12] ? driver_allows_async_probing+0x160/0x160 [ 25.307440][ T12] bus_for_each_drv+0x162/0x1e0 [ 25.312279][ T12] ? bus_rescan_devices+0x20/0x20 [ 25.317279][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 25.323058][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 25.328316][ T12] __device_attach+0x217/0x360 [ 25.333086][ T12] ? device_bind_driver+0xd0/0xd0 [ 25.338092][ T12] bus_probe_device+0x1e4/0x290 [ 25.342931][ T12] device_add+0x1480/0x1c20 [ 25.347465][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 25.352745][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 25.358801][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 25.364682][ T12] usb_set_configuration+0xe67/0x1740 [ 25.370057][ T12] generic_probe+0x9d/0xd5 [ 25.374462][ T12] usb_probe_device+0x99/0x100 [ 25.379209][ T12] ? usb_suspend+0x620/0x620 [ 25.383872][ T12] really_probe+0x281/0x6d0 [ 25.389249][ T12] driver_probe_device+0x104/0x210 [ 25.394461][ T12] __device_attach_driver+0x1c2/0x220 [ 25.399821][ T12] ? driver_allows_async_probing+0x160/0x160 [ 25.405790][ T12] bus_for_each_drv+0x162/0x1e0 [ 25.410627][ T12] ? bus_rescan_devices+0x20/0x20 [ 25.415763][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 25.421597][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 25.426897][ T12] __device_attach+0x217/0x360 [ 25.431651][ T12] ? device_bind_driver+0xd0/0xd0 [ 25.436664][ T12] bus_probe_device+0x1e4/0x290 [ 25.441513][ T12] device_add+0x1480/0x1c20 [ 25.446990][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 25.453058][ T12] usb_new_device.cold+0x6a4/0xe79 [ 25.458159][ T12] hub_event+0x1e59/0x3860 [ 25.462565][ T12] ? hub_port_debounce+0x260/0x260 [ 25.468099][ T12] ? find_held_lock+0x2d/0x110 [ 25.472845][ T12] ? mark_held_locks+0xe0/0xe0 [ 25.477608][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 25.483135][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 25.488418][ T12] process_one_work+0x92b/0x1530 [ 25.493357][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 25.498712][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 25.503718][ T12] worker_thread+0x96/0xe20 [ 25.508208][ T12] ? process_one_work+0x1530/0x1530 [ 25.513387][ T12] kthread+0x318/0x420 [ 25.517451][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 25.522878][ T12] ret_from_fork+0x24/0x30 [ 25.528010][ T12] Kernel Offset: disabled [ 25.532415][ T12] Rebooting in 86400 seconds..