URB ffff8880a1068d00 submitted while active ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7176 at drivers/usb/core/urb.c:363 usb_submit_urb.cold+0x1b/0x2c drivers/usb/core/urb.c:363 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7176 Comm: kworker/1:4 Not tainted 4.14.114 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient hub_init_func2 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 panic+0x1f2/0x438 kernel/panic.c:182 __warn.cold+0x2f/0x34 kernel/panic.c:546 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944 RIP: 0010:usb_submit_urb.cold+0x1b/0x2c drivers/usb/core/urb.c:363 RSP: 0018:ffff888063b1fbb0 EFLAGS: 00010286 RAX: 000000000000002b RBX: ffff88808115b680 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888063b0c8d0 RDI: ffffed100c763f6c RBP: ffff888063b1fc10 R08: 000000000000002b R09: ffff888063b0c8c8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a1068d00 R13: ffff88808115b690 R14: ffff88808115b820 R15: 0000000000000009 hub_activate+0x972/0x14e0 drivers/usb/core/hub.c:1223 hub_init_func2+0x1e/0x30 drivers/usb/core/hub.c:1248 process_one_work+0x868/0x1610 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x31c/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Kernel Offset: disabled Rebooting in 86400 seconds..