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 INFO: task kworker/0:1:24 blocked for more than 140 seconds. 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 Not tainted 4.14.198-syzkaller #0 vhci_hcd: connection closed 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 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 "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 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: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN kworker/0:1 D vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN 27736 24 2 0x80000000 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used Workqueue: usb_hub_wq hub_event 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 vhci_hcd vhci_hcd.0: pdev(0) 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 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 Call Trace: vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: disconnect device vhci_hcd: connection closed context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 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: release socket 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: Failed attach request for unsupported USB speed: UNKNOWN schedule+0x8d/0x1b0 kernel/sched/core.c:3428 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.part.0+0x125/0x190 drivers/usb/core/urb.c:691 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: 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: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:686 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: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: stop threads 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 usb_start_wait_urb+0x206/0x260 drivers/usb/core/message.c:62 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(3) 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: release socket 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: disconnect device 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: disconnect device 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: pdev(0) rhport(0) sockfd(3) usb_internal_control_msg drivers/usb/core/message.c:100 [inline] usb_control_msg+0x302/0x450 drivers/usb/core/message.c:151 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: 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 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 usb_get_descriptor+0xc0/0x160 drivers/usb/core/message.c:652 vhci_hcd: connection closed 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: 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) usb_get_device_descriptor+0x71/0xd0 drivers/usb/core/message.c:924 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 hub_port_init+0x625/0x28b0 drivers/usb/core/hub.c:4647 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: release socket 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: disconnect device vhci_hcd vhci_hcd.0: port 0 already used hub_port_connect drivers/usb/core/hub.c:4905 [inline] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] port_event drivers/usb/core/hub.c:5194 [inline] hub_event+0x1bc5/0x39a0 drivers/usb/core/hub.c:5274 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: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed 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: 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 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 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: pdev(0) 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 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: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_scheduled_works kernel/workqueue.c:2176 [inline] worker_thread+0x7d3/0xff0 kernel/workqueue.c:2252 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: Failed attach request for unsupported USB speed: UNKNOWN kthread+0x30d/0x420 kernel/kthread.c:232 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads 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 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: 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:404 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: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN INFO: task kworker/1:2:2772 blocked for more than 140 seconds. 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(1) 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: 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: Failed attach request for unsupported USB speed: UNKNOWN Not tainted 4.14.198-syzkaller #0 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 vhci_hcd.0: port 0 already used "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. vhci_hcd vhci_hcd.0: port 0 already used kworker/1:2 D vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket vhci_hcd: connection closed 27160 2772 2 0x80000000 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 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) Workqueue: usb_hub_wq hub_event 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: 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: stop threads vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: release socket Call Trace: 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 context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 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: 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: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd vhci_hcd.0: port 0 already used schedule+0x8d/0x1b0 kernel/sched/core.c:3428 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x125/0x190 drivers/usb/core/urb.c:691 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(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: 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: 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: release socket 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 vhci_hcd.0: port 0 already used usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:686 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: connection closed 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 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 vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_start_wait_urb+0x206/0x260 drivers/usb/core/message.c:62 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 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: connection closed 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 usb_internal_control_msg drivers/usb/core/message.c:100 [inline] usb_control_msg+0x302/0x450 drivers/usb/core/message.c:151 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(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: release socket 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 usb_get_descriptor+0xc0/0x160 drivers/usb/core/message.c:652 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 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 vhci_hcd vhci_hcd.0: port 0 already used usb_get_device_descriptor+0x71/0xd0 drivers/usb/core/message.c:924 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 vhci_hcd.0: port 0 already used hub_port_init+0x625/0x28b0 drivers/usb/core/hub.c:4647 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 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: 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: stop threads vhci_hcd vhci_hcd.0: port 0 already used hub_port_connect drivers/usb/core/hub.c:4905 [inline] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] port_event drivers/usb/core/hub.c:5194 [inline] hub_event+0x1bc5/0x39a0 drivers/usb/core/hub.c:5274 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 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 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: connection closed 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: 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: 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 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 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 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: 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 vhci_hcd.0: port 0 already used 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) 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: 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 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: 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 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 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: 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: 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 vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used kthread+0x30d/0x420 kernel/kthread.c:232 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 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: 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: 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 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used INFO: task kworker/1:1:6375 blocked for more than 140 seconds. 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(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: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Not tainted 4.14.198-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: Failed attach request for unsupported USB speed: UNKNOWN "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 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) kworker/1:1 D 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 vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN 28592 6375 2 0x80000000 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: connection closed Workqueue: usb_hub_wq hub_event 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: 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: connection closed Call Trace: 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:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 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: 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 vhci_hcd.0: port 0 already used 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: 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) schedule+0x8d/0x1b0 kernel/sched/core.c:3428 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 vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x125/0x190 drivers/usb/core/urb.c:691 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: 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: 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: 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: 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 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:686 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: 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 usb_start_wait_urb+0x206/0x260 drivers/usb/core/message.c:62 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: 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: 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: connection closed 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 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: 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 usb_internal_control_msg drivers/usb/core/message.c:100 [inline] usb_control_msg+0x302/0x450 drivers/usb/core/message.c:151 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 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: 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 usb_get_descriptor+0xc0/0x160 drivers/usb/core/message.c:652 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: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_get_device_descriptor+0x71/0xd0 drivers/usb/core/message.c:924 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 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 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 hub_port_init+0x625/0x28b0 drivers/usb/core/hub.c:4647 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: release socket vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN hub_port_connect drivers/usb/core/hub.c:4905 [inline] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] port_event drivers/usb/core/hub.c:5194 [inline] hub_event+0x1bc5/0x39a0 drivers/usb/core/hub.c:5274 vhci_hcd: disconnect device 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: 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(3) 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 vhci_hcd.0: pdev(0) rhport(0) sockfd(3) 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: 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: port 0 already used 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 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 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: 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: disconnect device 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: 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: 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(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: release socket 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 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 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: release socket 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: connection closed kthread+0x30d/0x420 kernel/kthread.c:232 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 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: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads INFO: task kworker/0:3:6555 blocked for more than 140 seconds. 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 vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Not tainted 4.14.198-syzkaller #0 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(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) "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 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 kworker/0:3 D28200 6555 2 0x80000000 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 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: 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: 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: pdev(1) rhport(0) sockfd(3) Call Trace: 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: 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 context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used schedule+0x8d/0x1b0 kernel/sched/core.c:3428 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3) usb_kill_urb.part.0+0x125/0x190 drivers/usb/core/urb.c:691 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: release socket 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: connection closed 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: 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: stop threads 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(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 vhci_hcd.0: port 0 already used 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 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:686 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_start_wait_urb+0x206/0x260 drivers/usb/core/message.c:62 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 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: 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 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 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: release socket 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 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 vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_internal_control_msg drivers/usb/core/message.c:100 [inline] usb_control_msg+0x302/0x450 drivers/usb/core/message.c:151 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: port 0 already used 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: 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: 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 usb_get_descriptor+0xc0/0x160 drivers/usb/core/message.c:652 vhci_hcd: connection closed vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN usb_get_device_descriptor+0x71/0xd0 drivers/usb/core/message.c:924 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: 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used hub_port_init+0x625/0x28b0 drivers/usb/core/hub.c:4647 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used hub_port_connect drivers/usb/core/hub.c:4905 [inline] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] port_event drivers/usb/core/hub.c:5194 [inline] hub_event+0x1bc5/0x39a0 drivers/usb/core/hub.c:5274 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 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 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: release socket process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 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: 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 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: 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: disconnect device vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN process_scheduled_works kernel/workqueue.c:2176 [inline] worker_thread+0x7d3/0xff0 kernel/workqueue.c:2252 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: pdev(0) rhport(0) sockfd(3) vhci_hcd: release socket 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: 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: connection closed kthread+0x30d/0x420 kernel/kthread.c:232 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: 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: Failed attach request for unsupported USB speed: UNKNOWN ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 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: port 0 already used vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN Showing all locks held in the system: vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) 5 locks held by kworker/0:1/24: vhci_hcd vhci_hcd.0: devid(0) speed(5) speed_str(super-speed) vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN #0: ("usb_hub_wq"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&hub->events)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (&dev->mutex){....}, at: [] device_lock include/linux/device.h:1081 [inline] #2: (&dev->mutex){....}, at: [] hub_event+0xfc/0x39a0 drivers/usb/core/hub.c:5220 #3: (&port_dev->status_lock){+.+.}, at: [] usb_lock_port drivers/usb/core/hub.c:2934 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect drivers/usb/core/hub.c:4904 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] port_event drivers/usb/core/hub.c:5194 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_event+0x1bb0/0x39a0 drivers/usb/core/hub.c:5274 #4: (hcd->address0_mutex){+.+.}, at: [] hub_port_init+0x15b/0x28b0 drivers/usb/core/hub.c:4429 1 lock held by khungtaskd/1068: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 5 locks held by kworker/1:2/2772: #0: ("usb_hub_wq"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&hub->events)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (&dev->mutex){....}, at: [] device_lock include/linux/device.h:1081 [inline] #2: (&dev->mutex){....}, at: [] hub_event+0xfc/0x39a0 drivers/usb/core/hub.c:5220 #3: (&port_dev->status_lock){+.+.}, at: [] usb_lock_port drivers/usb/core/hub.c:2934 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect drivers/usb/core/hub.c:4904 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] port_event drivers/usb/core/hub.c:5194 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_event+0x1bb0/0x39a0 drivers/usb/core/hub.c:5274 #4: (hcd->address0_mutex){+.+.}, at: [] hub_port_init+0x15b/0x28b0 drivers/usb/core/hub.c:4429 5 locks held by kworker/1:1/6375: #0: ("usb_hub_wq"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&hub->events)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (&dev->mutex){....}, at: [] device_lock include/linux/device.h:1081 [inline] #2: (&dev->mutex){....}, at: [] hub_event+0xfc/0x39a0 drivers/usb/core/hub.c:5220 #3: (&port_dev->status_lock){+.+.}, at: [] usb_lock_port drivers/usb/core/hub.c:2934 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect drivers/usb/core/hub.c:4904 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] port_event drivers/usb/core/hub.c:5194 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_event+0x1bb0/0x39a0 drivers/usb/core/hub.c:5274 #4: (hcd->address0_mutex){+.+.}, at: [] hub_port_init+0x15b/0x28b0 drivers/usb/core/hub.c:4429 5 locks held by kworker/0:3/6555: #0: ("usb_hub_wq"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&hub->events)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (&dev->mutex){....}, at: [] device_lock include/linux/device.h:1081 [inline] #2: (&dev->mutex){....}, at: [] hub_event+0xfc/0x39a0 drivers/usb/core/hub.c:5220 #3: (&port_dev->status_lock){+.+.}, at: [] usb_lock_port drivers/usb/core/hub.c:2934 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect drivers/usb/core/hub.c:4904 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] port_event drivers/usb/core/hub.c:5194 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_event+0x1bb0/0x39a0 drivers/usb/core/hub.c:5274 #4: (hcd->address0_mutex){+.+.}, at: [] hub_port_init+0x15b/0x28b0 drivers/usb/core/hub.c:4429 ============================================= 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: disconnect device 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 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: 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 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: 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: 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: 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 NMI backtrace for cpu 1 CPU: 1 PID: 1068 Comm: khungtaskd Not tainted 4.14.198-syzkaller #0 vhci_hcd vhci_hcd.0: port 0 already used Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62 vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: vhci_hcd vhci_hcd.0: port 0 already used NMI backtrace for cpu 0 CPU: 0 PID: 28878 Comm: syz-executor483 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a16a0200 task.stack: ffff888084550000 RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:2361 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:2381 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:2435 [inline] RIP: 0010:__lock_acquire+0xa61/0x3f20 kernel/locking/lockdep.c:3491 RSP: 0018:ffff888084557568 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 1b5ee9fe42d0375f RCX: 0000000000004304 RDX: 1ffffffff1413c34 RSI: 0000000090eae398 RDI: ffff8880a16a0b49 RBP: 0000000000000000 R08: ffffffff8a09e1a0 R09: 00000000000c0007 R10: ffff8880a16a0b28 R11: ffff8880a16a0200 R12: ffff8880a16a0b40 R13: 0000000000000000 R14: 31f67511c149d05e R15: ffffffff8a5a8c00 FS: 00000000015f8880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4efc188028 CR3: 000000008468a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 console_lock_spinning_enable kernel/printk/printk.c:1583 [inline] console_unlock+0x332/0xf20 kernel/printk/printk.c:2394 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1923 dev_vprintk_emit+0x1da/0x440 drivers/base/core.c:2989 dev_printk_emit+0xa5/0xd0 drivers/base/core.c:3000 __dev_printk+0xfe/0x250 drivers/base/core.c:3012 dev_err+0xc5/0xf0 drivers/base/core.c:3055 store_attach+0x5ff/0x6a0 drivers/usb/usbip/vhci_sysfs.c:382 dev_attr_store+0x56/0x80 drivers/base/core.c:723 sysfs_kf_write+0x106/0x160 fs/sysfs/file.c:141 kernfs_fop_write+0x289/0x440 fs/kernfs/file.c:316 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x401180 RSP: 002b:00007ffcf0f9a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000401180 RDX: 0000000000000008 RSI: 00007ffcf0f9a1c0 RDI: 0000000000000005 RBP: 00007ffcf0f9a1c0 R08: 0000000000000000 R09: 0000000000000008 R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: b5 80 46 86 c8 61 48 b8 00 00 00 00 00 fc ff df 49 0f af ce 48 c1 e9 31 4c 8d 04 cd 80 c9 07 8a 4c 89 c2 48 c1 ea 03 80 3c 02 00 <0f> 85 17 2d 00 00 48 8b 1c cd 80 c9 07 8a 48 85 db 74 55 48 83