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 '10.128.0.126' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.713446][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.953424][ T12] usb 1-1: Using ep0 maxpacket: 32 [ 26.073506][ T12] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 26.082641][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.092064][ T12] usb 1-1: config 0 descriptor?? [ 26.343584][ T12] hso 1-1:0.0: Can't find BULK IN endpoint [ 26.349639][ T12] ------------[ cut here ]------------ [ 26.355175][ T12] WARNING: CPU: 0 PID: 12 at net/core/dev.c:8710 rollback_registered_many+0x1de/0xea0 [ 26.364712][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 26.371501][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.5.0-rc2-syzkaller #0 [ 26.379648][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.389696][ T12] Workqueue: usb_hub_wq hub_event [ 26.394965][ T12] Call Trace: [ 26.398252][ T12] dump_stack+0xef/0x16e [ 26.402476][ T12] ? rollback_registered_many+0x170/0xea0 [ 26.408172][ T12] panic+0x2aa/0x6e1 [ 26.412056][ T12] ? add_taint.cold+0x16/0x16 [ 26.416721][ T12] ? printk+0xba/0xed [ 26.420691][ T12] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 26.426140][ T12] ? __warn.cold+0x14/0x30 [ 26.430637][ T12] ? __warn+0xd5/0x1c8 [ 26.434685][ T12] ? rollback_registered_many+0x1de/0xea0 [ 26.440379][ T12] __warn.cold+0x2f/0x30 [ 26.444700][ T12] ? rollback_registered_many+0x1de/0xea0 [ 26.450411][ T12] report_bug+0x27b/0x2f0 [ 26.454732][ T12] do_error_trap+0x12b/0x1e0 [ 26.459315][ T12] ? rollback_registered_many+0x1de/0xea0 [ 26.465024][ T12] do_invalid_op+0x32/0x40 [ 26.469428][ T12] ? rollback_registered_many+0x1de/0xea0 [ 26.475138][ T12] invalid_op+0x23/0x30 [ 26.480312][ T12] RIP: 0010:rollback_registered_many+0x1de/0xea0 [ 26.486617][ 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 70 0a 87 fc 45 84 ff 0f 85 49 ff ff ff e8 32 09 87 fc <0f> 0b 48 89 ef e8 38 53 30 fd 31 ff 89 c5 89 c6 e8 4d 0a 87 fc 40 [ 26.506208][ T12] RSP: 0018:ffff8881da227000 EFLAGS: 00010293 [ 26.512258][ T12] RAX: ffff8881da211880 RBX: ffff8881d039a000 RCX: ffffffff84b7f660 [ 26.520222][ T12] RDX: 0000000000000000 RSI: ffffffff84b7f66e RDI: 0000000000000001 [ 26.529229][ T12] RBP: ffff8881d039a068 R08: ffff8881da211880 R09: fffffbfff0f250b5 [ 26.537455][ T12] R10: fffffbfff0f250b4 R11: ffffffff879285a7 R12: ffff8881da227150 [ 26.545416][ T12] R13: ffff8881da2270e8 R14: dffffc0000000000 R15: 0000000000000000 [ 26.553384][ T12] ? rollback_registered_many+0x1d0/0xea0 [ 26.559091][ T12] ? rollback_registered_many+0x1de/0xea0 [ 26.564889][ T12] ? unregister_netdev+0xe/0x20 [ 26.569729][ T12] ? generic_xdp_install+0x490/0x490 [ 26.575092][ T12] ? __mutex_lock+0x42b/0x1360 [ 26.579852][ T12] ? find_held_lock+0x2d/0x110 [ 26.584628][ T12] ? unregister_netdev+0xe/0x20 [ 26.589474][ T12] ? mutex_trylock+0x2e0/0x2e0 [ 26.594223][ T12] rollback_registered+0xf2/0x1c0 [ 26.599240][ T12] ? rollback_registered_many+0xea0/0xea0 [ 26.604945][ T12] ? _dev_crit+0x109/0x109 [ 26.609345][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 26.614610][ T12] unregister_netdevice_queue+0x1d7/0x2b0 [ 26.620349][ T12] unregister_netdev+0x18/0x20 [ 26.625105][ T12] hso_free_net_device+0xff/0x300 [ 26.630123][ T12] hso_create_net_device+0x76d/0x9c0 [ 26.635396][ T12] hso_probe+0x28d/0x1b7b [ 26.639717][ T12] usb_probe_interface+0x305/0x7a0 [ 26.644815][ T12] ? usb_probe_device+0x100/0x100 [ 26.649819][ T12] really_probe+0x281/0x6d0 [ 26.654306][ T12] driver_probe_device+0x104/0x210 [ 26.660286][ T12] __device_attach_driver+0x1c2/0x220 [ 26.665649][ T12] ? driver_allows_async_probing+0x160/0x160 [ 26.671758][ T12] bus_for_each_drv+0x162/0x1e0 [ 26.676977][ T12] ? bus_rescan_devices+0x20/0x20 [ 26.682870][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.688679][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 26.694032][ T12] __device_attach+0x217/0x360 [ 26.698859][ T12] ? device_bind_driver+0xd0/0xd0 [ 26.703927][ T12] bus_probe_device+0x1e4/0x290 [ 26.708787][ T12] device_add+0x1480/0x1c20 [ 26.713279][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 26.718563][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 26.724626][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.730452][ T12] usb_set_configuration+0xe67/0x1740 [ 26.736031][ T12] generic_probe+0x9d/0xd5 [ 26.740658][ T12] usb_probe_device+0x99/0x100 [ 26.745535][ T12] ? usb_suspend+0x620/0x620 [ 26.750160][ T12] really_probe+0x281/0x6d0 [ 26.754683][ T12] driver_probe_device+0x104/0x210 [ 26.759906][ T12] __device_attach_driver+0x1c2/0x220 [ 26.765294][ T12] ? driver_allows_async_probing+0x160/0x160 [ 26.771307][ T12] bus_for_each_drv+0x162/0x1e0 [ 26.776169][ T12] ? bus_rescan_devices+0x20/0x20 [ 26.781484][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 26.787306][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 26.792589][ T12] __device_attach+0x217/0x360 [ 26.797336][ T12] ? device_bind_driver+0xd0/0xd0 [ 26.802341][ T12] bus_probe_device+0x1e4/0x290 [ 26.807577][ T12] device_add+0x1480/0x1c20 [ 26.812539][ T12] ? device_links_flush_sync_list+0x350/0x350 [ 26.818612][ T12] usb_new_device.cold+0x6a4/0xe79 [ 26.823719][ T12] hub_event+0x1e59/0x3860 [ 26.828139][ T12] ? hub_port_debounce+0x260/0x260 [ 26.833246][ T12] ? find_held_lock+0x2d/0x110 [ 26.838179][ T12] ? mark_held_locks+0xe0/0xe0 [ 26.843455][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 26.849003][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 26.854275][ T12] process_one_work+0x92b/0x1530 [ 26.859309][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 26.864696][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 26.869710][ T12] worker_thread+0x96/0xe20 [ 26.874197][ T12] ? process_one_work+0x1530/0x1530 [ 26.879377][ T12] kthread+0x318/0x420 [ 26.883432][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 26.888788][ T12] ret_from_fork+0x24/0x30 [ 26.893787][ T12] Kernel Offset: disabled [ 26.898155][ T12] Rebooting in 86400 seconds..