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 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 94 at net/core/dev.c:8710 rollback_registered_many+0x1ed/0xef0 net/core/dev.c:8710 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 94 Comm: kworker/1:2 Not tainted 5.5.0-rc6-syzkaller #0 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+0xef/0x16e lib/dump_stack.c:118 panic+0x2aa/0x6e1 kernel/panic.c:221 __warn.cold+0x2f/0x30 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:rollback_registered_many+0x1ed/0xef0 net/core/dev.c:8710 Code: 05 00 00 31 ff 44 89 fe e8 d0 ef 76 fc 45 84 ff 0f 85 49 ff ff ff e8 92 ee 76 fc 0f 1f 44 00 00 e8 88 ee 76 fc e8 83 ee 76 fc <0f> 0b 48 89 ef e8 19 0d 21 fd 31 ff 89 c5 89 c6 e8 9e ef 76 fc 40 RSP: 0018:ffff8881d5d57648 EFLAGS: 00010293 RAX: ffff8881d6ad3100 RBX: ffff8881ce048000 RCX: ffffffff84c82260 RDX: 0000000000000000 RSI: ffffffff84c8227d RDI: 0000000000000001 RBP: ffff8881ce048068 R08: ffff8881d6ad3100 R09: fffffbfff0f8250d R10: fffffbfff0f8250c R11: ffffffff87c12867 R12: ffff8881d5d57798 R13: dffffc0000000000 R14: ffff8881d5d57730 R15: 0000000000000000 rollback_registered+0xf2/0x1c0 net/core/dev.c:8789 unregister_netdevice_queue net/core/dev.c:9888 [inline] unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:9881 unregister_netdevice include/linux/netdevice.h:2674 [inline] unregister_netdev+0x18/0x20 net/core/dev.c:9929 r871xu_dev_remove+0xe2/0x215 drivers/staging/rtl8712/usb_intf.c:604 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1134 [inline] device_release_driver_internal+0x42f/0x500 drivers/base/dd.c:1165 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:532 device_del+0x481/0xd30 drivers/base/core.c:2664 usb_disable_device+0x23d/0x790 drivers/usb/core/message.c:1237 usb_disconnect+0x293/0x900 drivers/usb/core/hub.c:2200 hub_port_connect drivers/usb/core/hub.c:5035 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x1a1d/0x4300 drivers/usb/core/hub.c:5552 process_one_work+0x945/0x15c0 kernel/workqueue.c:2264 process_scheduled_works kernel/workqueue.c:2326 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2412 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..