usb 5-1: USB disconnect, device number 80
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WARNING: CPU: 1 PID: 22807 at net/core/dev.c:8934 rollback_registered_many+0x1f5/0xfc0 net/core/dev.c:8934
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 22807 Comm: kworker/1:7 Not tainted 5.8.0-rc7-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+0xf6/0x16e lib/dump_stack.c:118
 panic+0x2aa/0x6e1 kernel/panic.c:231
 __warn.cold+0x20/0x50 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x41/0x80 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540
RIP: 0010:rollback_registered_many+0x1f5/0xfc0 net/core/dev.c:8934
Code: 05 00 00 31 ff 44 89 fe e8 58 2e 55 fc 45 84 ff 0f 85 48 ff ff ff e8 0a 32 55 fc 0f 1f 44 00 00 e8 00 32 55 fc e8 fb 31 55 fc <0f> 0b 4c 89 ef e8 b1 1b 03 fd 31 ff 41 89 c5 89 c6 e8 25 2e 55 fc
RSP: 0018:ffff8881c685f610 EFLAGS: 00010212
RAX: 00000000000047f5 RBX: ffff8881c50c8000 RCX: ffffc9000dc7d000
RDX: 0000000000040000 RSI: ffffffff84ea7805 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff87e6ca47
R10: 0000000000000000 R11: 0000000000000005 R12: ffff8881c685f6d0
R13: ffff8881c50c8068 R14: ffff8881c685f678 R15: 0000000000000000
 rollback_registered net/core/dev.c:9013 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10094
 unregister_netdevice include/linux/netdevice.h:2754 [inline]
 unregister_netdev+0x18/0x20 net/core/dev.c:10135
 r871xu_dev_remove+0xe2/0x280 drivers/staging/rtl8712/usb_intf.c:604
 usb_unbind_interface+0x1d8/0x8d0 drivers/usb/core/driver.c:436
 __device_release_driver+0x3b7/0x6e0 drivers/base/dd.c:1108
 device_release_driver_internal drivers/base/dd.c:1139 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1162
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:533
 device_del+0x47c/0xd20 drivers/base/core.c:2877
 usb_disable_device+0x387/0x930 drivers/usb/core/message.c:1245
 usb_disconnect.cold+0x27d/0x780 drivers/usb/core/hub.c:2217
 hub_port_connect drivers/usb/core/hub.c:5059 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5348 [inline]
 port_event drivers/usb/core/hub.c:5494 [inline]
 hub_event+0x1c93/0x4390 drivers/usb/core/hub.c:5576
 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x392/0x470 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Kernel Offset: disabled
Rebooting in 86400 seconds..