usb 4-1: USB disconnect, device number 21 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: hid_retry_timeout+0x0/0xd0 drivers/hid/usbhid/hid-core.c:712 WARNING: CPU: 1 PID: 22 at lib/debugobjects.c:481 debug_print_object+0x160/0x250 lib/debugobjects.c:481 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.3.0-rc5+ #28 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+0xca/0x13e lib/dump_stack.c:113 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:481 Code: dd 80 ef da 85 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 80 ef da 85 48 c7 c7 c0 e4 da 85 e8 e5 dd 31 ff <0f> 0b 83 05 4b 0f a8 05 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 RSP: 0018:ffff8881da347718 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 000000000000bd90 RSI: ffffffff81288cfd RDI: ffffed103b468ed5 RBP: 0000000000000001 R08: ffff8881da25b000 R09: fffffbfff11ad79a R10: fffffbfff11ad799 R11: ffffffff88d6bccf R12: ffffffff86d0dc60 R13: ffffffff812e7b70 R14: ffff8881cceca8c8 R15: ffff8881d4e9dd58 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline] debug_check_no_obj_freed+0x2df/0x443 lib/debugobjects.c:994 free_pages_prepare mm/page_alloc.c:1174 [inline] __free_pages_ok+0x222/0x1d70 mm/page_alloc.c:1420 usbhid_disconnect+0xab/0xd0 drivers/hid/usbhid/hid-core.c:1414 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+0x2dc/0x4a0 drivers/base/bus.c:556 device_del+0x420/0xb10 drivers/base/core.c:2339 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 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..