INFO: task kworker/0:0:5 blocked for more than 143 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:26512 pid: 5 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/1:1:35 blocked for more than 145 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:27528 pid: 35 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/0:2:2967 blocked for more than 146 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:27528 pid: 2967 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/1:2:4219 blocked for more than 147 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:27392 pid: 4219 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/1:0:8410 blocked for more than 149 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:26968 pid: 8410 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 INFO: task kworker/0:1:8441 blocked for more than 150 seconds. Not tainted 5.12.0-rc1-next-20210302-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:27528 pid: 8441 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4322 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5073 schedule+0xcf/0x270 kernel/sched/core.c:5152 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc5/0x1b0 drivers/usb/core/message.c:790 usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1065 hub_port_init+0x9e3/0x2dd0 drivers/usb/core/hub.c:4799 hub_port_connect drivers/usb/core/hub.c:5155 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2423 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Showing all locks held in the system: 5 locks held by kworker/0:0/5: #0: ffff888015949d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90000ca7da8 ( (work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff88801cb59218 ( &dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline] &dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff88801cb5c578 ( &port_dev->status_lock ){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] ){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] ){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] ){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline] ){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff88814457dc68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 5 locks held by kworker/1:1/35: #0: ffff888015949d38 ( (wq_completion)usb_hub_wq ){+.+.}-{0:0} , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] , at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] , at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] , at: set_work_data kernel/workqueue.c:616 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] , at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90000dffda8 ((work_completion)(&hub->events)){+.+.}-{0:0} , at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff8881445b1218 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:740 [inline] , at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff8881445b4578 ( &port_dev->status_lock ){+.+.}-{3:3} , at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] , at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] , at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] , at: port_event drivers/usb/core/hub.c:5509 [inline] , at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff88801c9c5368 ( hcd->address0_mutex ){+.+.}-{3:3} , at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 2 locks held by kworker/u4:3/103: 1 lock held by khungtaskd/1664: #0: ffffffff8bf741e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6327 5 locks held by kworker/0:2/2967: #0: ffff888015949d38