[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 13.540042][ C1] random: crng init done [?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 '10.128.1.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.947668][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 30.037848][ T94] usb 1-1: Using ep0 maxpacket: 16 [ 30.158172][ T94] usb 1-1: config 53 has an invalid interface number: 236 but max is 1 [ 30.166592][ T94] usb 1-1: config 53 has an invalid interface number: 168 but max is 1 [ 30.174993][ T94] usb 1-1: config 53 has no interface number 0 [ 30.181198][ T94] usb 1-1: config 53 has no interface number 1 [ 30.187493][ T94] usb 1-1: config 53 interface 236 altsetting 163 endpoint 0xE has an invalid bInterval 89, changing to 7 [ 30.199276][ T94] usb 1-1: config 53 interface 236 altsetting 163 endpoint 0xF has invalid maxpacket 512, setting to 64 [ 30.210396][ T94] usb 1-1: config 53 interface 236 altsetting 163 has an invalid endpoint with address 0x80, skipping [ 30.221371][ T94] usb 1-1: config 53 interface 236 altsetting 163 endpoint 0xA has invalid wMaxPacketSize 0 [ 30.231454][ T94] usb 1-1: config 53 interface 236 altsetting 163 endpoint 0x4 has invalid maxpacket 1024, setting to 64 [ 30.242660][ T94] usb 1-1: config 53 interface 236 altsetting 163 endpoint 0x2 has invalid maxpacket 1024, setting to 64 [ 30.253993][ T94] usb 1-1: config 53 interface 168 altsetting 1 endpoint 0xB has invalid maxpacket 512, setting to 64 [ 30.264963][ T94] usb 1-1: config 53 interface 168 altsetting 1 endpoint 0x8 has invalid maxpacket 1024, setting to 64 [ 30.275990][ T94] usb 1-1: config 53 interface 168 altsetting 1 has an invalid endpoint with address 0x0, skipping [ 30.286700][ T94] usb 1-1: config 53 interface 168 altsetting 1 has a duplicate endpoint with address 0xF, skipping [ 30.297477][ T94] usb 1-1: config 53 interface 168 altsetting 1 endpoint 0x3 has invalid maxpacket 512, setting to 64 [ 30.308421][ T94] usb 1-1: config 53 interface 168 altsetting 1 has a duplicate endpoint with address 0x3, skipping [ 30.319185][ T94] usb 1-1: config 53 interface 168 altsetting 1 has a duplicate endpoint with address 0xD, skipping [ 30.329992][ T94] usb 1-1: config 53 interface 236 has no altsetting 0 [ 30.336835][ T94] usb 1-1: config 53 interface 168 has no altsetting 0 [ 30.497704][ T94] usb 1-1: New USB device found, idVendor=0bda, idProduct=8712, bcdDevice=bc.bf [ 30.506736][ T94] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 30.514735][ T94] usb 1-1: Product: syz [ 30.518901][ T94] usb 1-1: Manufacturer: syz [ 30.523461][ T94] usb 1-1: SerialNumber: syz executing program [ 30.869089][ T94] r8712u: register rtl8712_netdev_ops to netdev_ops [ 30.875722][ T94] usb 1-1: r8712u: USB_SPEED_HIGH with 6 endpoints [ 30.917662][ T94] usb 1-1: r8712u: Boot from EFUSE: Autoload Failed [ 30.924265][ T94] usb 1-1: r8712u: MAC Address from efuse = 00:e0:4c:87:00:00 [ 30.931754][ T94] usb 1-1: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin" [ 30.951178][ T102] usb 1-1: Direct firmware load for rtlwifi/rtl8712u.bin failed with error -2 [ 30.960242][ T102] usb 1-1: r8712u: Firmware request failed [ 30.978839][ T94] r8712u: register rtl8712_netdev_ops to netdev_ops [ 30.985466][ T94] usb 1-1: r8712u: USB_SPEED_HIGH with 5 endpoints [ 31.028079][ T94] usb 1-1: r8712u: Boot from EFUSE: Autoload Failed [ 31.034690][ T94] usb 1-1: r8712u: MAC Address from efuse = 00:e0:4c:87:00:00 [ 31.042173][ T94] usb 1-1: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin" [ 31.051900][ T94] usb 1-1: USB disconnect, device number 2 [ 31.072528][ T102] usb 1-1: Direct firmware load for rtlwifi/rtl8712u.bin failed with error -2 [ 31.081552][ T102] usb 1-1: r8712u: Firmware request failed [ 31.087513][ T94] ------------[ cut here ]------------ [ 31.093583][ T94] WARNING: CPU: 0 PID: 94 at net/core/dev.c:8774 rollback_registered_many+0x1ed/0xec0 [ 31.103092][ T94] Kernel panic - not syncing: panic_on_warn set ... [ 31.109654][ T94] CPU: 0 PID: 94 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 31.117772][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.127818][ T94] Workqueue: usb_hub_wq hub_event [ 31.132812][ T94] Call Trace: [ 31.136077][ T94] dump_stack+0xef/0x16e [ 31.140293][ T94] ? rollback_registered_many+0x170/0xec0 [ 31.145982][ T94] panic+0x2aa/0x6e1 [ 31.149860][ T94] ? add_taint.cold+0x16/0x16 [ 31.154523][ T94] ? printk+0xba/0xed [ 31.158476][ T94] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 31.163903][ T94] ? __warn.cold+0x14/0x30 [ 31.168299][ T94] ? __warn+0xd5/0x1c8 [ 31.172347][ T94] ? rollback_registered_many+0x1ed/0xec0 [ 31.178038][ T94] __warn.cold+0x2f/0x30 [ 31.182260][ T94] ? rollback_registered_many+0x1ed/0xec0 [ 31.187955][ T94] report_bug+0x27b/0x2f0 [ 31.192266][ T94] do_error_trap+0x12b/0x1e0 [ 31.196835][ T94] ? rollback_registered_many+0x1ed/0xec0 [ 31.202530][ T94] do_invalid_op+0x32/0x40 [ 31.206922][ T94] ? rollback_registered_many+0x1ed/0xec0 [ 31.212634][ T94] invalid_op+0x23/0x30 [ 31.216808][ T94] RIP: 0010:rollback_registered_many+0x1ed/0xec0 [ 31.223233][ T94] 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 [ 31.242816][ T94] RSP: 0018:ffff8881d5ccf640 EFLAGS: 00010293 [ 31.248861][ T94] RAX: ffff8881d6a4b100 RBX: ffff8881cdf98000 RCX: ffffffff84c5dc60 [ 31.256811][ T94] RDX: 0000000000000000 RSI: ffffffff84c5dc7d RDI: 0000000000000001 [ 31.264772][ T94] RBP: ffff8881cdf98068 R08: ffff8881d6a4b100 R09: fffffbfff0f870a5 [ 31.272720][ T94] R10: fffffbfff0f870a4 R11: ffffffff87c38527 R12: ffff8881d5ccf788 [ 31.280668][ T94] R13: dffffc0000000000 R14: ffff8881d5ccf720 R15: 0000000000000000 [ 31.288621][ T94] ? rollback_registered_many+0x1d0/0xec0 [ 31.294313][ T94] ? rollback_registered_many+0x1ed/0xec0 [ 31.300003][ T94] ? unregister_netdev+0xe/0x20 [ 31.304841][ T94] ? netif_set_real_num_tx_queues+0x710/0x710 [ 31.310887][ T94] ? __mutex_lock+0x42b/0x1360 [ 31.315648][ T94] ? do_raw_spin_lock+0x129/0x290 [ 31.320662][ T94] ? unregister_netdev+0xe/0x20 [ 31.325928][ T94] ? mark_held_locks+0x9f/0xe0 [ 31.330676][ T94] ? _raw_spin_unlock_irq+0x1f/0x30 [ 31.335845][ T94] ? mutex_trylock+0x2c0/0x2c0 [ 31.340695][ T94] rollback_registered+0xf2/0x1c0 [ 31.345693][ T94] ? rollback_registered_many+0xec0/0xec0 [ 31.351384][ T94] ? wait_for_completion_interruptible+0x420/0x420 [ 31.357878][ T94] ? wake_up_q+0x140/0x140 [ 31.362268][ T94] unregister_netdevice_queue+0x1d7/0x2b0 [ 31.367963][ T94] unregister_netdev+0x18/0x20 [ 31.372713][ T94] r871xu_dev_remove+0xe2/0x215 [ 31.377545][ T94] usb_unbind_interface+0x1bd/0x8a0 [ 31.382726][ T94] ? __pm_runtime_idle+0xd1/0x310 [ 31.387727][ T94] ? usb_autoresume_device+0x60/0x60 [ 31.392997][ T94] device_release_driver_internal+0x42f/0x500 [ 31.399037][ T94] bus_remove_device+0x2eb/0x5a0 [ 31.403951][ T94] device_del+0x481/0xd30 [ 31.408257][ T94] ? device_create_with_groups+0x120/0x120 [ 31.414038][ T94] ? usb_remove_ep_devs+0x3e/0x80 [ 31.419037][ T94] ? remove_intf_ep_devs+0x13f/0x1d0 [ 31.424293][ T94] usb_disable_device+0x23d/0x790 [ 31.429306][ T94] usb_disconnect+0x293/0x900 [ 31.433968][ T94] hub_event+0x1a1d/0x4300 [ 31.438371][ T94] ? hub_port_debounce+0x350/0x350 [ 31.443469][ T94] ? find_held_lock+0x2d/0x110 [ 31.448217][ T94] ? mark_held_locks+0xe0/0xe0 [ 31.452979][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 31.458503][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 31.463774][ T94] process_one_work+0x94b/0x1620 [ 31.468704][ T94] ? pwq_dec_nr_in_flight+0x310/0x310 [ 31.474066][ T94] ? do_raw_spin_lock+0x129/0x290 [ 31.479067][ T94] worker_thread+0x7ab/0xe20 [ 31.483670][ T94] ? process_one_work+0x1620/0x1620 [ 31.488841][ T94] kthread+0x318/0x420 [ 31.493325][ T94] ? kthread_create_on_node+0xf0/0xf0 [ 31.498675][ T94] ret_from_fork+0x24/0x30 [ 31.503705][ T94] Kernel Offset: disabled [ 31.508227][ T94] Rebooting in 86400 seconds..