[info] Using makefile-style concurrent boot in runlevel 2. [ 15.201800][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.50' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.113150][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 26.353119][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 26.473279][ T22] usb 1-1: New USB device found, idVendor=0af0, idProduct=6731, bcdDevice= 5.8b [ 26.483646][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.494142][ T22] usb 1-1: config 0 descriptor?? [ 26.534317][ T22] hso 1-1:0.0: Can't find BULK IN endpoint [ 26.540548][ T22] ------------[ cut here ]------------ [ 26.546621][ T22] WARNING: CPU: 1 PID: 22 at net/core/dev.c:8220 rollback_registered_many+0x1df/0xe00 [ 26.556762][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 26.563561][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-rc3+ #0 [ 26.571830][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.582756][ T22] Workqueue: usb_hub_wq hub_event [ 26.588150][ T22] Call Trace: [ 26.591737][ T22] dump_stack+0xca/0x13e [ 26.596016][ T22] ? rollback_registered_many+0x120/0xe00 [ 26.601864][ T22] panic+0x2aa/0x6e1 [ 26.605973][ T22] ? add_taint.cold+0x16/0x16 [ 26.610731][ T22] ? printk+0xba/0xed [ 26.614906][ T22] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 26.620990][ T22] ? __warn.cold+0x14/0x33 [ 26.626028][ T22] ? __warn+0xd5/0x1d0 [ 26.630365][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.636666][ T22] __warn.cold+0x2f/0x33 [ 26.641154][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.647503][ T22] report_bug+0x27b/0x2f0 [ 26.652263][ T22] do_error_trap+0x12b/0x1e0 [ 26.656964][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.663561][ T22] do_invalid_op+0x32/0x40 [ 26.668218][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.674155][ T22] invalid_op+0x23/0x30 [ 26.678340][ T22] RIP: 0010:rollback_registered_many+0x1df/0xe00 [ 26.685405][ T22] Code: 84 c0 74 06 0f 8e 39 0a 00 00 44 0f b6 bb 28 05 00 00 31 ff 44 89 fe e8 2f 48 8c fc 45 84 ff 0f 85 49 ff ff ff e8 f1 46 8c fc <0f> 0b 4c 89 e7 e8 a7 a8 31 fd 31 ff 41 89 c4 89 c6 e8 0b 48 8c fc [ 26.706339][ T22] RSP: 0018:ffff8881d9337038 EFLAGS: 00010293 [ 26.713595][ T22] RAX: ffff8881da24e000 RBX: ffff8881d12ee000 RCX: ffffffff84b1d1b1 [ 26.722426][ T22] RDX: 0000000000000000 RSI: ffffffff84b1d1bf RDI: 0000000000000001 [ 26.732526][ T22] RBP: ffff8881d9337168 R08: ffff8881da24e000 R09: fffffbfff0ee9209 [ 26.741075][ T22] R10: fffffbfff0ee9208 R11: ffffffff87749047 R12: ffff8881d12ee070 [ 26.750296][ T22] R13: ffff8881d93370f8 R14: dffffc0000000000 R15: 0000000000000000 [ 26.758758][ T22] ? rollback_registered_many+0x1d1/0xe00 [ 26.765342][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.771500][ T22] ? rollback_registered_many+0x1df/0xe00 [ 26.778047][ T22] ? generic_xdp_install+0x480/0x480 [ 26.783623][ T22] ? __mutex_lock+0x430/0x1360 [ 26.788581][ T22] ? find_held_lock+0x2d/0x110 [ 26.793596][ T22] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 26.799549][ T22] ? unregister_netdev+0xe/0x20 [ 26.805006][ T22] ? mutex_trylock+0x2c0/0x2c0 [ 26.810068][ T22] rollback_registered+0xf2/0x1c0 [ 26.815218][ T22] ? rollback_registered_many+0xe00/0xe00 [ 26.821524][ T22] ? _dev_crit+0x109/0x109 [ 26.826117][ T22] ? kasan_unpoison_shadow+0x30/0x40 [ 26.831625][ T22] unregister_netdevice_queue+0x1d7/0x2b0 [ 26.837465][ T22] unregister_netdev+0x18/0x20 [ 26.842581][ T22] hso_free_net_device+0xff/0x300 [ 26.848224][ T22] hso_create_net_device+0x76d/0x9c0 [ 26.854423][ T22] hso_probe+0x1019/0x1a80 [ 26.858843][ T22] usb_probe_interface+0x305/0x7a0 [ 26.864106][ T22] ? usb_probe_device+0x100/0x100 [ 26.869271][ T22] really_probe+0x281/0x6d0 [ 26.874824][ T22] driver_probe_device+0x104/0x210 [ 26.880377][ T22] __device_attach_driver+0x1c2/0x220 [ 26.886496][ T22] ? driver_allows_async_probing+0x160/0x160 [ 26.893118][ T22] bus_for_each_drv+0x162/0x1e0 [ 26.898442][ T22] ? bus_rescan_devices+0x20/0x20 [ 26.903473][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 26.909431][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 26.914866][ T22] __device_attach+0x217/0x360 [ 26.919841][ T22] ? device_bind_driver+0xd0/0xd0 [ 26.925224][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 26.930942][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 26.936665][ T22] bus_probe_device+0x1e4/0x290 [ 26.942319][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 26.948384][ T22] device_add+0xae6/0x16f0 [ 26.952840][ T22] ? uevent_store+0x50/0x50 [ 26.957748][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 26.964194][ T22] usb_set_configuration+0xdf6/0x1670 [ 26.969653][ T22] generic_probe+0x9d/0xd5 [ 26.974261][ T22] usb_probe_device+0x99/0x100 [ 26.979040][ T22] ? usb_suspend+0x620/0x620 [ 26.983751][ T22] really_probe+0x281/0x6d0 [ 26.988451][ T22] driver_probe_device+0x104/0x210 [ 26.993728][ T22] __device_attach_driver+0x1c2/0x220 [ 26.999729][ T22] ? driver_allows_async_probing+0x160/0x160 [ 27.005704][ T22] bus_for_each_drv+0x162/0x1e0 [ 27.010567][ T22] ? bus_rescan_devices+0x20/0x20 [ 27.015594][ T22] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.021962][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 27.027746][ T22] __device_attach+0x217/0x360 [ 27.032662][ T22] ? device_bind_driver+0xd0/0xd0 [ 27.038230][ T22] ? kobject_uevent_env+0x29e/0x1150 [ 27.044449][ T22] ? kobject_uevent_env+0x2a8/0x1150 [ 27.050108][ T22] bus_probe_device+0x1e4/0x290 [ 27.055616][ T22] ? blocking_notifier_call_chain+0x54/0xa0 [ 27.062162][ T22] device_add+0xae6/0x16f0 [ 27.066834][ T22] ? uevent_store+0x50/0x50 [ 27.071711][ T22] usb_new_device.cold+0x6a4/0xe79 [ 27.077795][ T22] hub_event+0x1dd0/0x37e0 [ 27.082799][ T22] ? hub_port_debounce+0x260/0x260 [ 27.087932][ T22] ? find_held_lock+0x2d/0x110 [ 27.093223][ T22] ? mark_held_locks+0xe0/0xe0 [ 27.099021][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 27.104806][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 27.110892][ T22] process_one_work+0x92b/0x1530 [ 27.116318][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 27.121823][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 27.127336][ T22] worker_thread+0x96/0xe20 [ 27.132022][ T22] ? process_one_work+0x1530/0x1530 [ 27.137304][ T22] kthread+0x318/0x420 [ 27.141448][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 27.147223][ T22] ret_from_fork+0x24/0x30 [ 27.154304][ T22] Kernel Offset: disabled [ 27.158791][ T22] Rebooting in 86400 seconds..