usb 1-1: r8712u: MAC Address from efuse = 00:e0:4c:87:00:00 usb 1-1: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin" usb 1-1: USB disconnect, device number 2 usb 1-1: Direct firmware load for rtlwifi/rtl8712u.bin failed with error -2 usb 1-1: r8712u: Firmware request failed WARNING: CPU: 0 PID: 12 at net/core/dev.c:8152 rollback_registered_many+0x1f3/0xe70 net/core/dev.c:8152 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe8/0x16e lib/dump_stack.c:113 panic+0x29d/0x5f2 kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x130/0x1f0 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:rollback_registered_many+0x1f3/0xe70 net/core/dev.c:8152 Code: 05 00 00 31 ff 44 89 fe e8 5a 15 f3 f4 45 84 ff 0f 85 49 ff ff ff e8 1c 14 f3 f4 0f 1f 44 00 00 e8 12 14 f3 f4 e8 0d 14 f3 f4 <0f> 0b 4c 89 e7 e8 33 72 f2 f6 31 ff 41 89 c4 89 c6 e8 27 15 f3 f4 RSP: 0018:ffff8880a84b7698 EFLAGS: 00010293 RAX: ffff8880a84a3100 RBX: ffff888090b58000 RCX: ffffffff8c7eb146 RDX: 0000000000000000 RSI: ffffffff8c7eb163 RDI: 0000000000000001 RBP: ffff8880a84b77c8 R08: ffff8880a84a3100 R09: fffffbfff2708111 R10: fffffbfff2708110 R11: ffffffff93840887 R12: ffff888090b58070 R13: dffffc0000000000 R14: ffff8880a84b7758 R15: 0000000000000000 rollback_registered+0xf7/0x1c0 net/core/dev.c:8228 unregister_netdevice_queue net/core/dev.c:9275 [inline] unregister_netdevice_queue+0x1dc/0x2b0 net/core/dev.c:9268 unregister_netdevice include/linux/netdevice.h:2655 [inline] unregister_netdev+0x1d/0x30 net/core/dev.c:9316 r871xu_dev_remove+0xe7/0x223 drivers/staging/rtl8712/usb_intf.c:604 usb_unbind_interface+0x1c9/0x980 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1082 [inline] device_release_driver_internal+0x436/0x4f0 drivers/base/dd.c:1113 bus_remove_device+0x302/0x5c0 drivers/base/bus.c:556 device_del+0x467/0xb90 drivers/base/core.c:2269 usb_disable_device+0x242/0x790 drivers/usb/core/message.c:1235 usb_disconnect+0x298/0x870 drivers/usb/core/hub.c:2197 hub_port_connect drivers/usb/core/hub.c:4940 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0xcd2/0x3b00 drivers/usb/core/hub.c:5432 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..