vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN INFO: task kworker/0:1:14 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket Not tainted 4.19.152-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:1 D27776 14 2 0x80000000 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) Call Trace: vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_scheduled_works kernel/workqueue.c:2214 [inline] worker_thread+0x82b/0x1130 kernel/workqueue.c:2300 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads INFO: task kworker/1:1:25 blocked for more than 140 seconds. vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) Not tainted 4.19.152-syzkaller #0 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used kworker/1:1 D26120 25 2 0x80000000 vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Call Trace: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: stop threads usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: release socket usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: connection closed hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_scheduled_works kernel/workqueue.c:2214 [inline] worker_thread+0x82b/0x1130 kernel/workqueue.c:2300 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed INFO: task kworker/0:2:4382 blocked for more than 140 seconds. vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device Not tainted 4.19.152-syzkaller #0 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) kworker/0:2 D27288 4382 2 0x80000000 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used Call Trace: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd vhci_hcd.0: port 0 already used usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads INFO: task kworker/0:0:8098 blocked for more than 140 seconds. vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Not tainted 4.19.152-syzkaller #0 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used kworker/0:0 D27592 8098 2 0x80000000 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used Workqueue: usb_hub_wq hub_event vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed Call Trace: vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_scheduled_works kernel/workqueue.c:2214 [inline] worker_thread+0x82b/0x1130 kernel/workqueue.c:2300 vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used INFO: task kworker/1:0:8106 blocked for more than 140 seconds. vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Not tainted 4.19.152-syzkaller #0 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used kworker/1:0 D28016 8106 2 0x80000000 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Call Trace: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN INFO: task kworker/0:3:8140 blocked for more than 140 seconds. vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used Not tainted 4.19.152-syzkaller #0 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads kworker/0:3 D28032 8140 2 0x80000000 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Call Trace: vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN schedule+0x8d/0x1b0 kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692 vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:654 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:926 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_init+0x748/0x2fa0 drivers/usb/core/hub.c:4749 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used hub_port_connect drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] port_event drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cf8/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_one_work+0x864/0x1570 kernel/workqueue.c:2155 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used process_scheduled_works kernel/workqueue.c:2214 [inline] worker_thread+0x82b/0x1130 kernel/workqueue.c:2300 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used kthread+0x33f/0x460 kernel/kthread.c:259 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used Showing all locks held in the system: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN 2 locks held by kworker/u4:0/7: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used 5 locks held by kworker/0:1/14: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed #0: vhci_hcd vhci_hcd.0: port 0 already used 000000004698df59 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #1: 00000000844a055e ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used #2: 00000000a43a9123 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 00000000a43a9123 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads #3: 00000000cf5c51a7 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 00000000cf5c51a7 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 00000000cf5c51a7 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 00000000cf5c51a7 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 00000000cf5c51a7 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket #4: 000000004e87da3f (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads 5 locks held by kworker/1:1/25: vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #0: 000000004698df59 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 vhci_hcd: stop threads #1: 00000000a4a174de ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used #2: 00000000ffa46ebc (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 00000000ffa46ebc (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #3: 00000000ef0f28a4 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 00000000ef0f28a4 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 00000000ef0f28a4 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 00000000ef0f28a4 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 00000000ef0f28a4 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #4: 00000000f8523285 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used 1 lock held by khungtaskd/1566: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed #0: vhci_hcd vhci_hcd.0: port 0 already used 00000000624661f5 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used 5 locks held by kworker/0:2/4382: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) #0: 000000004698df59 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads #1: 00000000e8d56e51 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed #2: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN 000000009843826f (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] 000000009843826f (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed #3: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used 0000000001b345db (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] 0000000001b345db (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] 0000000001b345db (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] 0000000001b345db (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] 0000000001b345db (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #4: 00000000425381b7 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used 1 lock held by in:imklog/7767: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) #0: 0000000070530524 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device 5 locks held by kworker/0:0/8098: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used #0: 000000004698df59 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket #1: 00000000c7d2c5ba ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd vhci_hcd.0: port 0 already used #2: 000000003e1e6a38 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline] #2: 000000003e1e6a38 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) #3: 000000009f049ead (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline] #3: 000000009f049ead (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline] #3: 000000009f049ead (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline] #3: 000000009f049ead (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline] #3: 000000009f049ead (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: port 0 already used #4: 00000000b0a8f209 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used 5 locks held by kworker/1:0/8106: vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #0: 000000004698df59 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket