------------[ cut here ]------------ URB 0000000026838d6e submitted while active WARNING: CPU: 0 PID: 7601 at drivers/usb/core/urb.c:363 usb_submit_urb+0x11cf/0x14e0 drivers/usb/core/urb.c:363 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7601 Comm: kworker/0:4 Not tainted 4.19.0+ #300 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:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 panic+0x238/0x4e7 kernel/panic.c:184 kobject: 'loop4' (00000000075bc359): kobject_uevent_env __warn.cold.8+0x20/0x4a kernel/panic.c:536 report_bug+0x254/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 kobject: 'loop4' (00000000075bc359): fill_kobj_path: path = '/devices/virtual/block/loop4' do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:966 RIP: 0010:usb_submit_urb+0x11cf/0x14e0 drivers/usb/core/urb.c:363 Code: ee e8 a5 d8 80 fc 45 84 ed 0f 85 e2 f6 ff ff e8 c7 d7 80 fc 48 89 de 48 c7 c7 80 7c 71 88 c6 05 33 e7 ef 04 01 e8 31 8c 4a fc <0f> 0b e9 c0 f6 ff ff c7 45 a0 01 00 00 00 e9 65 f7 ff ff 41 bc ed RSP: 0018:ffff88018ab2f4f0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8801d7985000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8165dcc5 RDI: 0000000000000005 RBP: ffff88018ab2f560 R08: ffff88018a16c2c0 R09: ffffed003b5c5008 R10: ffffed003b5c5008 R11: ffff8801dae28047 R12: 00000000fffffff0 R13: 0000000000000000 R14: 0000000000000009 R15: ffff88018ab2f6f8 hub_activate+0xcab/0x1940 drivers/usb/core/hub.c:1214 hub_init_func2+0x1e/0x30 drivers/usb/core/hub.c:1239 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 kobject: 'loop4' (00000000075bc359): kobject_uevent_env kobject: 'loop4' (00000000075bc359): fill_kobj_path: path = '/devices/virtual/block/loop4' worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kobject: 'loop4' (00000000075bc359): kobject_uevent_env kobject: 'loop4' (00000000075bc359): fill_kobj_path: path = '/devices/virtual/block/loop4' kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350 Kernel Offset: disabled Rebooting in 86400 seconds..