usb 5-1: USB disconnect, device number 6 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3071 at net/core/dev.c:9247 rollback_registered_many+0x1f0/0x1230 net/core/dev.c:9247 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3071 Comm: kworker/0:5 Not tainted 5.8.0-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+0x14/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:rollback_registered_many+0x1f0/0x1230 net/core/dev.c:9247 Code: 05 00 00 31 ff 44 89 fe e8 cd 4e 55 fc 45 84 ff 0f 85 49 ff ff ff e8 7f 52 55 fc 0f 1f 44 00 00 e8 75 52 55 fc e8 70 52 55 fc <0f> 0b 4c 89 ef e8 96 78 02 fd 31 ff 41 89 c5 89 c6 e8 9a 4e 55 fc RSP: 0018:ffff8881a985f608 EFLAGS: 00010206 RAX: 0000000000004200 RBX: ffff8881ce8c8000 RCX: ffffc9000da7c000 RDX: 0000000000040000 RSI: ffffffff84eaab70 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff87e717c7 R10: 0000000000000000 R11: 00000000dbfbb796 R12: ffff8881a985f6d0 R13: ffff8881ce8c8068 R14: ffff8881a985f678 R15: 0000000000000000 rollback_registered net/core/dev.c:9326 [inline] unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10407 unregister_netdevice include/linux/netdevice.h:2774 [inline] unregister_netdev+0x18/0x20 net/core/dev.c:10448 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+0x3c6/0x6f0 drivers/base/dd.c:1153 device_release_driver_internal drivers/base/dd.c:1184 [inline] device_release_driver+0x26/0x40 drivers/base/dd.c:1207 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:533 device_del+0x481/0xd90 drivers/base/core.c:3107 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 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2417 kthread+0x392/0x470 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds..