INIT: Entering runlevel: 2 [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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.98' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.621381][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.861336][ T22] usb 1-1: Using ep0 maxpacket: 32 [ 28.981472][ T22] usb 1-1: config 0 has an invalid interface number: 15 but max is 0 [ 28.990048][ T22] usb 1-1: config 0 has no interface number 0 [ 28.996277][ T22] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 29.005450][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 29.015513][ T22] usb 1-1: config 0 descriptor?? [ 29.271645][ T22] hso 1-1:0.15: Can't find BULK IN endpoint [ 29.277828][ T22] ------------[ cut here ]------------ [ 29.284328][ T22] WARNING: CPU: 1 PID: 22 at net/core/dev.c:8710 rollback_registered_many+0x1de/0xea0 [ 29.293856][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 29.301393][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.5.0-rc1-syzkaller #0 [ 29.309515][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.319557][ T22] Workqueue: usb_hub_wq hub_event [ 29.324555][ T22] Call Trace: [ 29.327841][ T22] dump_stack+0xef/0x16e [ 29.332068][ T22] ? rollback_registered_many+0x130/0xea0 [ 29.337789][ T22] panic+0x2aa/0x6e1 [ 29.341678][ T22] ? add_taint.cold+0x16/0x16 [ 29.346360][ T22] ? printk+0xba/0xed [ 29.350354][ T22] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 29.355812][ T22] ? __warn.cold+0x14/0x30 [ 29.360218][ T22] ? __warn+0xd5/0x1c8 [ 29.364488][ T22] ? rollback_registered_many+0x1de/0xea0 [ 29.370195][ T22] __warn.cold+0x2f/0x30 [ 29.374435][ T22] ? rollback_registered_many+0x1de/0xea0 [ 29.380148][ T22] report_bug+0x27b/0x2f0 [ 29.384625][ T22] do_error_trap+0x12b/0x1e0 [ 29.389223][ T22] ? rollback_registered_many+0x1de/0xea0 [ 29.394934][ T22] do_invalid_op+0x32/0x40 [ 29.399338][ T22] ? rollback_registered_many+0x1de/0xea0 [ 29.405252][ T22] invalid_op+0x23/0x30 [ 29.409573][ T22] RIP: 0010:rollback_registered_many+0x1de/0xea0 [ 29.415907][ T22] 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 90 0b 87 fc 45 84 ff 0f 85 49 ff ff ff e8 22 0a 87 fc <0f> 0b 48 89 ef e8 18 57 30 fd 31 ff 89 c5 89 c6 e8 6d 0b 87 fc 40 [ 29.435612][ T22] RSP: 0018:ffff8881d8c37000 EFLAGS: 00010293 [ 29.442017][ T22] RAX: ffff8881da24e200 RBX: ffff8881d0156000 RCX: ffffffff84b7f5a0 [ 29.450060][ T22] RDX: 0000000000000000 RSI: ffffffff84b7f5ae RDI: 0000000000000001 [ 29.458026][ T22] RBP: ffff8881d0156068 R08: ffff8881da24e200 R09: fffffbfff0f2511d [ 29.465981][ T22] R10: fffffbfff0f2511c R11: ffffffff879288e7 R12: ffff8881d8c37150 [ 29.473947][ T22] R13: ffff8881d8c370e8 R14: dffffc0000000000 R15: 0000000000000000 [ 29.481924][ T22] ? rollback_registered_many+0x1d0/0xea0 [ 29.487637][ T22] ? rollback_registered_many+0x1de/0xea0 [ 29.493346][ T22] ? unregister_netdev+0xe/0x20 [ 29.498207][ T22] ? generic_xdp_install+0x490/0x490 [ 29.503493][ T22] ? __mutex_lock+0x42b/0x1360 [ 29.508240][ T22] ? find_held_lock+0x2d/0x110 [ 29.513284][ T22] ? unregister_netdev+0xe/0x20 [ 29.518269][ T22] ? mutex_trylock+0x2e0/0x2e0 [ 29.523029][ T22] rollback_registered+0xf2/0x1c0 [ 29.528054][ T22] ? rollback_registered_many+0xea0/0xea0 [ 29.533756][ T22] ? _dev_crit+0x109/0x109 [ 29.538168][ T22] ? kasan_unpoison_shadow+0x30/0x40 [ 29.543489][ T22] unregister_netdevice_queue+0x1d7/0x2b0 [ 29.549210][ T22] unregister_netdev+0x18/0x20 [ 29.554588][ T22] hso_free_net_device+0xff/0x300 [ 29.559686][ T22] hso_create_net_device+0x76d/0x9c0 [ 29.564956][ T22] hso_probe+0x28d/0x1b7b [ 29.569273][ T22] usb_probe_interface+0x305/0x7a0 [ 29.574938][ T22] ? usb_probe_device+0x100/0x100 [ 29.580086][ T22] really_probe+0x281/0x6d0 [ 29.584653][ T22] driver_probe_device+0x104/0x210 [ 29.589937][ T22] __device_attach_driver+0x1c2/0x220 [ 29.595333][ T22] ? driver_allows_async_probing+0x160/0x160 [ 29.601301][ T22] bus_for_each_drv+0x162/0x1e0 [ 29.606142][ T22] ? bus_rescan_devices+0x20/0x20 [ 29.611159][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 29.616973][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 29.622259][ T22] __device_attach+0x217/0x360 [ 29.627015][ T22] ? device_bind_driver+0xd0/0xd0 [ 29.632020][ T22] bus_probe_device+0x1e4/0x290 [ 29.636857][ T22] device_add+0x1480/0x1c20 [ 29.641356][ T22] ? wait_for_completion+0x3c0/0x3c0 [ 29.646736][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 29.652797][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 29.658592][ T22] usb_set_configuration+0xe67/0x1740 [ 29.664048][ T22] generic_probe+0x9d/0xd5 [ 29.668537][ T22] usb_probe_device+0x99/0x100 [ 29.673285][ T22] ? usb_suspend+0x620/0x620 [ 29.677861][ T22] really_probe+0x281/0x6d0 [ 29.682350][ T22] driver_probe_device+0x104/0x210 [ 29.687446][ T22] __device_attach_driver+0x1c2/0x220 [ 29.693427][ T22] ? driver_allows_async_probing+0x160/0x160 [ 29.699392][ T22] bus_for_each_drv+0x162/0x1e0 [ 29.704418][ T22] ? bus_rescan_devices+0x20/0x20 [ 29.710221][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 29.716900][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 29.722371][ T22] __device_attach+0x217/0x360 [ 29.727131][ T22] ? device_bind_driver+0xd0/0xd0 [ 29.732233][ T22] bus_probe_device+0x1e4/0x290 [ 29.737257][ T22] device_add+0x1480/0x1c20 [ 29.741759][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 29.747817][ T22] usb_new_device.cold+0x6a4/0xe79 [ 29.752928][ T22] hub_event+0x1e59/0x3860 [ 29.757335][ T22] ? hub_port_debounce+0x260/0x260 [ 29.762452][ T22] ? find_held_lock+0x2d/0x110 [ 29.767208][ T22] ? mark_held_locks+0xe0/0xe0 [ 29.771964][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 29.777758][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 29.783030][ T22] process_one_work+0x92b/0x1530 [ 29.787965][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 29.793330][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 29.798343][ T22] worker_thread+0x96/0xe20 [ 29.804053][ T22] ? process_one_work+0x1530/0x1530 [ 29.809258][ T22] kthread+0x318/0x420 [ 29.813337][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 29.818854][ T22] ret_from_fork+0x24/0x30 [ 29.824212][ T22] Kernel Offset: disabled [ 29.828579][ T22] Rebooting in 86400 seconds..