[ 15.286800][ C1] random: crng init done [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 '10.128.0.156' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.393647][ T81] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 38.483871][ T81] usb 1-1: Using ep0 maxpacket: 8 [ 38.603741][ T81] usb 1-1: config 66 has an invalid interface number: 86 but max is 0 [ 38.612159][ T81] usb 1-1: config 66 has no interface number 0 [ 38.618394][ T81] usb 1-1: New USB device found, idVendor=13d3, idProduct=3323, bcdDevice=94.5b [ 38.627683][ T81] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 executing program [ 38.923793][ T81] usb 1-1: string descriptor 0 read error: -71 [ 38.933169][ T81] r8712u: register rtl8712_netdev_ops to netdev_ops [ 38.939993][ T81] usb 1-1: r8712u: USB_SPEED_HIGH with 0 endpoints [ 38.983711][ T81] usb 1-1: r8712u: Boot from EFUSE: Autoload Failed [ 38.993160][ T81] usb 1-1: r8712u: MAC Address from efuse = 00:e0:4c:87:00:00 [ 39.000920][ T81] usb 1-1: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin" [ 39.010418][ T81] usb 1-1: USB disconnect, device number 2 [ 39.018996][ T101] usb 1-1: Direct firmware load for rtlwifi/rtl8712u.bin failed with error -2 [ 39.028091][ T101] usb 1-1: r8712u: Firmware request failed [ 39.034255][ T81] ------------[ cut here ]------------ [ 39.039808][ T81] WARNING: CPU: 1 PID: 81 at net/core/dev.c:8774 rollback_registered_many+0x1ed/0xec0 [ 39.049511][ T81] Kernel panic - not syncing: panic_on_warn set ... [ 39.056115][ T81] CPU: 1 PID: 81 Comm: kworker/1:1 Not tainted 5.6.0-rc3-syzkaller #0 [ 39.064422][ T81] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.075517][ T81] Workqueue: usb_hub_wq hub_event [ 39.080547][ T81] Call Trace: [ 39.083825][ T81] dump_stack+0xef/0x16e [ 39.088056][ T81] ? rollback_registered_many+0x170/0xec0 [ 39.093763][ T81] panic+0x2aa/0x6e1 [ 39.097645][ T81] ? add_taint.cold+0x16/0x16 [ 39.102326][ T81] ? printk+0xba/0xed [ 39.106327][ T81] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 39.111775][ T81] ? __warn.cold+0x14/0x30 [ 39.117144][ T81] ? __warn+0xd5/0x1c8 [ 39.121239][ T81] ? rollback_registered_many+0x1ed/0xec0 [ 39.127141][ T81] __warn.cold+0x2f/0x30 [ 39.131688][ T81] ? rollback_registered_many+0x1ed/0xec0 [ 39.137553][ T81] report_bug+0x27b/0x2f0 [ 39.141891][ T81] do_error_trap+0x12b/0x1e0 [ 39.146486][ T81] ? rollback_registered_many+0x1ed/0xec0 [ 39.152198][ T81] do_invalid_op+0x32/0x40 [ 39.156607][ T81] ? rollback_registered_many+0x1ed/0xec0 [ 39.162835][ T81] invalid_op+0x23/0x30 [ 39.167011][ T81] RIP: 0010:rollback_registered_many+0x1ed/0xec0 [ 39.173344][ T81] Code: 05 00 00 31 ff 44 89 fe e8 c0 81 79 fc 45 84 ff 0f 85 49 ff ff ff e8 82 80 79 fc 0f 1f 44 00 00 e8 78 80 79 fc e8 73 80 79 fc <0f> 0b 48 89 ef e8 79 d3 24 fd 31 ff 89 c5 89 c6 e8 8e 81 79 fc 40 [ 39.193289][ T81] RSP: 0018:ffff8881d8a5f640 EFLAGS: 00010293 [ 39.199356][ T81] RAX: ffff8881d8a50000 RBX: ffff8881cd440000 RCX: ffffffff84c5dc60 [ 39.207470][ T81] RDX: 0000000000000000 RSI: ffffffff84c5dc7d RDI: 0000000000000001 [ 39.215462][ T81] RBP: ffff8881cd440068 R08: ffff8881d8a50000 R09: fffffbfff0f870a5 [ 39.223449][ T81] R10: fffffbfff0f870a4 R11: ffffffff87c38527 R12: ffff8881d8a5f788 [ 39.231411][ T81] R13: dffffc0000000000 R14: ffff8881d8a5f720 R15: 0000000000000000 [ 39.239422][ T81] ? rollback_registered_many+0x1d0/0xec0 [ 39.245134][ T81] ? rollback_registered_many+0x1ed/0xec0 [ 39.250847][ T81] ? unregister_netdev+0xe/0x20 [ 39.255705][ T81] ? netif_set_real_num_tx_queues+0x710/0x710 [ 39.261766][ T81] ? __mutex_lock+0x42b/0x1360 [ 39.266530][ T81] ? do_raw_spin_lock+0x129/0x290 [ 39.271758][ T81] ? unregister_netdev+0xe/0x20 [ 39.276853][ T81] ? mark_held_locks+0x9f/0xe0 [ 39.281764][ T81] ? _raw_spin_unlock_irq+0x1f/0x30 [ 39.287196][ T81] ? mutex_trylock+0x2c0/0x2c0 [ 39.292127][ T81] rollback_registered+0xf2/0x1c0 [ 39.297143][ T81] ? rollback_registered_many+0xec0/0xec0 [ 39.302849][ T81] ? wait_for_completion_interruptible+0x420/0x420 [ 39.310910][ T81] ? wake_up_q+0x140/0x140 [ 39.315320][ T81] unregister_netdevice_queue+0x1d7/0x2b0 [ 39.321043][ T81] unregister_netdev+0x18/0x20 [ 39.325938][ T81] r871xu_dev_remove+0xe2/0x215 [ 39.330782][ T81] usb_unbind_interface+0x1bd/0x8a0 [ 39.335982][ T81] ? __pm_runtime_idle+0xd1/0x310 [ 39.341309][ T81] ? usb_autoresume_device+0x60/0x60 [ 39.346809][ T81] device_release_driver_internal+0x42f/0x500 [ 39.352869][ T81] bus_remove_device+0x2eb/0x5a0 [ 39.357817][ T81] device_del+0x481/0xd30 [ 39.362414][ T81] ? mark_held_locks+0x9f/0xe0 [ 39.367190][ T81] ? device_create_with_groups+0x120/0x120 [ 39.373289][ T81] ? lockdep_hardirqs_on+0x382/0x580 [ 39.378711][ T81] ? remove_intf_ep_devs+0x13f/0x1d0 [ 39.384205][ T81] usb_disable_device+0x23d/0x790 [ 39.389535][ T81] usb_disconnect+0x293/0x900 [ 39.394225][ T81] hub_event+0x1a1d/0x4300 [ 39.398846][ T81] ? hub_port_debounce+0x350/0x350 [ 39.404271][ T81] ? find_held_lock+0x2d/0x110 [ 39.409342][ T81] ? mark_held_locks+0xe0/0xe0 [ 39.414136][ T81] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 39.419795][ T81] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 39.425196][ T81] process_one_work+0x94b/0x1620 [ 39.430310][ T81] ? pwq_dec_nr_in_flight+0x310/0x310 [ 39.435742][ T81] ? do_raw_spin_lock+0x129/0x290 [ 39.441493][ T81] worker_thread+0x7ab/0xe20 [ 39.446165][ T81] ? process_one_work+0x1620/0x1620 [ 39.451870][ T81] kthread+0x318/0x420 [ 39.456007][ T81] ? kthread_create_on_node+0xf0/0xf0 [ 39.461405][ T81] ret_from_fork+0x24/0x30 [ 39.466718][ T81] Kernel Offset: disabled [ 39.471348][ T81] Rebooting in 86400 seconds..