vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used INFO: task kworker/0:1:14 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads Not tainted 4.19.172-syzkaller #0 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used "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 vhci_hcd.0: port 0 already used kworker/0:1 D27704 14 2 0x80000000 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used Workqueue: usb_hub_wq hub_event vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads vhci_hcd: release socket Call Trace: vhci_hcd: disconnect device context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 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: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/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 vhci_hcd.0: port 1 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 usb_kill_urb+0x7c/0x90 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:63 vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used hub_port_init+0x12dc/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4654 vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 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: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) 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 vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used 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(0) rhport(0) sockfd(3) worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 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: release socket vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used INFO: task kworker/1:1:25 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device Not tainted 4.19.172-syzkaller #0 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed "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 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 1 already used kworker/1:1 D26544 25 2 0x80000000 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used Call Trace: vhci_hcd vhci_hcd.0: port 0 already used context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: connection closed vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used usb_kill_urb+0x7c/0x90 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 vhci_hcd: release socket 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:63 vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used hub_port_init+0x12dc/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4654 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads 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: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: connection closed hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 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: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 vhci_hcd: connection closed 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd: release socket worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used INFO: task kworker/0:2:3639 blocked for more than 140 seconds. 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 1 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used Not tainted 4.19.172-syzkaller #0 vhci_hcd: disconnect device vhci_hcd: connection closed 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: pdev(1) rhport(0) sockfd(3) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) 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(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used kworker/0:2 D27288 3639 2 0x80000000 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd: connection closed Workqueue: usb_hub_wq hub_event vhci_hcd: stop threads 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used Call Trace: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 0 already used schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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 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(3) speed_str(high-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 usb_kill_urb+0x7c/0x90 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:63 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: connection closed 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(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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(3) speed_str(high-speed) 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 vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used usb_get_descriptor+0xc5/0x1b0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:654 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads usb_get_device_descriptor+0x81/0xf0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:926 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used hub_port_init+0x74b/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4749 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: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd: disconnect device ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads INFO: task kworker/1:0:8098 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: connection closed vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket Not tainted 4.19.172-syzkaller #0 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used kworker/1:0 D27776 8098 2 0x80000000 vhci_hcd: stop threads Workqueue: usb_hub_wq hub_event vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used Call Trace: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: port 1 already used usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. 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 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 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 vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used usb_kill_urb+0x7c/0x90 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/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: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. 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 vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 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 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used usb_get_descriptor+0xc5/0x1b0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:654 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: disconnect device systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 already used usb_get_device_descriptor+0x81/0xf0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:926 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used hub_port_init+0x74b/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4749 vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd: disconnect device hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 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 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 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: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) 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 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device 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: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used INFO: task kworker/1:2:8134 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads Not tainted 4.19.172-syzkaller #0 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: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 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: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: release socket kworker/1:2 D28224 8134 2 0x80000000 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: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket Workqueue: usb_hub_wq hub_event 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(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used Call Trace: vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd: release socket context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) 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(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd: connection closed usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:697 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 1 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 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 vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used usb_kill_urb+0x7c/0x90 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:63 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd: connection closed vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 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: pdev(1) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used hub_port_init+0x12dc/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4654 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 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: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used INFO: task kworker/1:3:8142 blocked for more than 140 seconds. vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used Not tainted 4.19.172-syzkaller #0 vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: connection closed "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: 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 vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used kworker/1:3 D27664 8142 2 0x80000000 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 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: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) Workqueue: usb_hub_wq hub_event vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used Call Trace: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 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(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used usb_kill_urb.part.0+0x197/0x220 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:697 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 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: stop threads vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 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 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/urb.c:692 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed usb_start_wait_urb+0x252/0x4c0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:63 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads 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 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd: disconnect device usb_internal_control_msg syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/message.c:152 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(5) rhport(1) sockfd(5) vhci_hcd: release socket vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used hub_port_init+0x12dc/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4654 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd: connection closed hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5020 [inline] hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] hub_event+0x1cd4/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 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 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(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 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 vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used 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: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 vhci_hcd: release socket Showing all locks held in the system: 5 locks held by kworker/0:1/14: 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: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-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 #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used #1: 000000008127d25a ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 #2: 00000000d7965b91 (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 00000000d7965b91 (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) #3: 000000002aecd2d9 (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 000000002aecd2d9 (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 000000002aecd2d9 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 000000002aecd2d9 (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 000000002aecd2d9 (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #4: 00000000fca5b533 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 5 locks held by kworker/1:1/25: vhci_hcd vhci_hcd.0: port 0 already used 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 vhci_hcd.0: port 0 already used #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used #1: 000000000ffe87d6 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket #2: 00000000e13c8e4e (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 00000000e13c8e4e (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used #3: 0000000038d626ed (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 0000000038d626ed (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 0000000038d626ed (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 0000000038d626ed (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 0000000038d626ed (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 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: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used #4: 00000000bbfb2e46 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd: connection closed 1 lock held by khungtaskd/1565: vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used #0: 00000000c4c4a86d (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 syzkaller/managers/linux-4-19/kernel/kernel/locking/lockdep.c:4440 vhci_hcd: stop threads 5 locks held by kworker/0:2/3639: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used #1: 00000000693db10d ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #2: 0000000020b98469 (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 0000000020b98469 (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 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(4) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used #3: 00000000a1462cbb (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 00000000a1462cbb (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 00000000a1462cbb (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 00000000a1462cbb (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 00000000a1462cbb (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: connection closed #4: 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 1 already used 00000000779fd2f3 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 1 lock held by in:imklog/7865: vhci_hcd: release socket #0: 00000000063480db (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 syzkaller/managers/linux-4-19/kernel/fs/file.c:767 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used 5 locks held by kworker/1:0/8098: vhci_hcd vhci_hcd.0: port 1 already used #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: port 1 already used #1: 00000000905ed027 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used 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 #2: 0000000049f2737a (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 0000000049f2737a (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 vhci_hcd: stop threads 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 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used #3: 00000000933f5c50 (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 00000000933f5c50 (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 00000000933f5c50 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 00000000933f5c50 (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 00000000933f5c50 (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket #4: 0000000074c64558 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 0 already used 2 locks held by kworker/u4:0/8111: vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used 5 locks held by kworker/1:2/8134: vhci_hcd vhci_hcd.0: port 1 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 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 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: pdev(0) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #1: 00000000d7f74e27 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: stop threads #2: 00000000d773ed82 (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 00000000d773ed82 (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used #3: 000000004b8fc600 (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 000000004b8fc600 (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 000000004b8fc600 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 000000004b8fc600 (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 000000004b8fc600 (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) #4: 0000000011a7711e (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 1 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(5) rhport(0) sockfd(3) 5 locks held by kworker/1:3/8142: vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #0: 00000000f189dfe5 ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 vhci_hcd vhci_hcd.0: port 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #1: 000000002fdca0d5 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 vhci_hcd vhci_hcd.0: port 1 already used #2: 0000000080201f70 (&dev->mutex){....}, at: device_lock syzkaller/managers/linux-4-19/kernel/./include/linux/device.h:1173 [inline] #2: 0000000080201f70 (&dev->mutex){....}, at: hub_event+0x11e/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5337 vhci_hcd vhci_hcd.0: port 1 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: release socket vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: disconnect device vhci_hcd: stop threads systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: pdev(1) rhport(0) sockfd(3) #3: 00000000de6645d8 (&port_dev->status_lock){+.+.}, at: usb_lock_port syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:2977 [inline] #3: 00000000de6645d8 (&port_dev->status_lock){+.+.}, at: hub_port_connect syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5019 [inline] #3: 00000000de6645d8 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5203 [inline] #3: 00000000de6645d8 (&port_dev->status_lock){+.+.}, at: port_event syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5311 [inline] #3: 00000000de6645d8 (&port_dev->status_lock){+.+.}, at: hub_event+0x1cbf/0x43e0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:5391 vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: release socket systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 already used #4: 000000002578f5ab (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x2fa0 syzkaller/managers/linux-4-19/kernel/drivers/usb/core/hub.c:4528 vhci_hcd vhci_hcd.0: port 1 already used 4 locks held by syz-executor365/21729: 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 vhci_hcd.0: port 1 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: release socket vhci_hcd vhci_hcd.0: port 1 already used 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 #0: 000000009ffb24d3 (&rq->lock){-.-.}, at: rq_lock syzkaller/managers/linux-4-19/kernel/kernel/sched/sched.h:1824 [inline] #0: 000000009ffb24d3 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3455 vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(4) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 0 already used #1: 00000000c4c4a86d (rcu_read_lock){....}, at: trace_sched_stat_runtime syzkaller/managers/linux-4-19/kernel/./include/trace/events/sched.h:428 [inline] #1: 00000000c4c4a86d (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 syzkaller/managers/linux-4-19/kernel/kernel/sched/fair.c:857 vhci_hcd vhci_hcd.0: port 0 already used #2: 000000009dd7add1 (&sig->wait_chldexit){....}, at: __wake_up_common_lock+0xb0/0x170 syzkaller/managers/linux-4-19/kernel/kernel/sched/wait.c:120 vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(3) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used #3: 0000000014b2066d (&(&sig->stats_lock)->seqcount){....}, at: exit_notify syzkaller/managers/linux-4-19/kernel/kernel/exit.c:745 [inline] #3: 0000000014b2066d (&(&sig->stats_lock)->seqcount){....}, at: do_exit+0x15be/0x2be0 syzkaller/managers/linux-4-19/kernel/kernel/exit.c:890 vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: connection closed vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd vhci_hcd.0: pdev(5) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: pdev(4) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. 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 1 already used vhci_hcd vhci_hcd.0: port 0 already used 4 locks held by syz-executor365/21750: vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: disconnect device 4 locks held by syz-executor365/21757: vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 1 already used 4 locks held by syz-executor365/21756: vhci_hcd: release socket vhci_hcd: connection closed vhci_hcd: disconnect device 4 locks held by syz-executor365/21764: vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(3) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) vhci_hcd: connection closed vhci_hcd: disconnect device ============================================= vhci_hcd vhci_hcd.0: pdev(2) rhport(0) sockfd(3) vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed) systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. 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 1 already used NMI backtrace for cpu 0 vhci_hcd vhci_hcd.0: port 1 already used CPU: 0 PID: 1565 Comm: khungtaskd Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 syzkaller/managers/linux-4-19/kernel/lib/nmi_backtrace.c:101 vhci_hcd vhci_hcd.0: port 0 already used nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 syzkaller/managers/linux-4-19/kernel/lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace syzkaller/managers/linux-4-19/kernel/./include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks syzkaller/managers/linux-4-19/kernel/kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 syzkaller/managers/linux-4-19/kernel/kernel/hung_task.c:287 vhci_hcd vhci_hcd.0: port 1 already used kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: vhci_hcd vhci_hcd.0: port 0 already used NMI backtrace for cpu 1 CPU: 1 PID: 21783 Comm: syz-executor365 Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode syzkaller/managers/linux-4-19/kernel/kernel/kcov.c:67 [inline] RIP: 0010:write_comp_data+0x16/0x70 syzkaller/managers/linux-4-19/kernel/kernel/kcov.c:122 Code: 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 80 df 01 00 65 8b 05 ea 84 9f 7e 00 01 1f 00 75 4f 8b 86 60 13 00 00 83 f8 03 75 44 48 8b 86 68 RSP: 0018:ffff8880ba107df0 EFLAGS: 00000046 RAX: 0000000080010002 RBX: ffff8880ba124c80 RCX: ffffffff81540c16 RDX: 0000000000000001 RSI: ffff8880a9f62340 RDI: 0000000000000001 RBP: ffff8880ba124c80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c65d05b R12: 0000000000000001 R13: ffff8880956cfd90 R14: ffff8880ba124d00 R15: dffffc0000000000 FS: 00007f907057b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000460539 CR3: 000000008ed9f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __remove_hrtimer syzkaller/managers/linux-4-19/kernel/kernel/time/hrtimer.c:986 [inline] __run_hrtimer syzkaller/managers/linux-4-19/kernel/kernel/time/hrtimer.c:1383 [inline] __hrtimer_run_queues+0x2f6/0xe60 syzkaller/managers/linux-4-19/kernel/kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x32a/0x930 syzkaller/managers/linux-4-19/kernel/kernel/time/hrtimer.c:1521 local_apic_timer_interrupt syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore syzkaller/managers/linux-4-19/kernel/./arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_trylock_spinning syzkaller/managers/linux-4-19/kernel/kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 syzkaller/managers/linux-4-19/kernel/kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d 9c bf a3 08 00 74 37 e8 4d 97 14 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 39 97 14 00 0f 0b e8 32 97 14 00 RSP: 0018:ffff8880af757780 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a9f62340 RBX: 0000000000000293 RCX: 1ffff110153ec58c RDX: 0000000000000000 RSI: ffffffff814dc273 RDI: 0000000000000293 RBP: ffff8880af7577c0 R08: ffffffff8cd2bf10 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000028 R13: 1ffffffff13e3041 R14: 0000000000000200 R15: 0000000000000001 dev_vprintk_emit+0x2e3/0x640 syzkaller/managers/linux-4-19/kernel/drivers/base/core.c:3263 dev_printk_emit+0xbb/0xf0 syzkaller/managers/linux-4-19/kernel/drivers/base/core.c:3274 __dev_printk+0x108/0x260 syzkaller/managers/linux-4-19/kernel/drivers/base/core.c:3286 _dev_err+0xd8/0x110 syzkaller/managers/linux-4-19/kernel/drivers/base/core.c:3329 attach_store+0x796/0x850 syzkaller/managers/linux-4-19/kernel/drivers/usb/usbip/vhci_sysfs.c:368 dev_attr_store+0x56/0x80 syzkaller/managers/linux-4-19/kernel/drivers/base/core.c:966 sysfs_kf_write+0x110/0x160 syzkaller/managers/linux-4-19/kernel/fs/sysfs/file.c:139 kernfs_fop_write+0x2b0/0x470 syzkaller/managers/linux-4-19/kernel/fs/kernfs/file.c:316 __vfs_write+0xf7/0x770 syzkaller/managers/linux-4-19/kernel/fs/read_write.c:485 vfs_write+0x1f3/0x540 syzkaller/managers/linux-4-19/kernel/fs/read_write.c:549 ksys_write+0x12b/0x2a0 syzkaller/managers/linux-4-19/kernel/fs/read_write.c:599 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4069df Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007f907057ad60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00000000004069df RDX: 0000000000000008 RSI: 00007f907057adb0 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: 00007f907057ad00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f907057adb0 R13: 0000000000000000 R14: 00007f907057b400 R15: 0000000000022000 vhci_hcd: release socket systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used vhci_hcd vhci_hcd.0: port 0 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: disconnect device vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd: stop threads vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: port 0 already used systemd-journald[17691]: /dev/kmsg buffer overrun, some messages lost. vhci_hcd: release socket vhci_hcd vhci_hcd.0: pdev(2) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: port 1 already used vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed)