INFO: task kworker/1:0:19 blocked for more than 143 seconds. Not tainted 5.11.0-next-20210301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:27320 pid: 19 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 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/0:3:3824 blocked for more than 144 seconds. Not tainted 5.11.0-next-20210301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:27632 pid: 3824 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 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/1:2:8447 blocked for more than 146 seconds. Not tainted 5.11.0-next-20210301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:26968 pid: 8447 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 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/0:2:8491 blocked for more than 148 seconds. Not tainted 5.11.0-next-20210301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:27664 pid: 8491 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 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 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 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/1:0/19: #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc90000d97da8 ( (work_completion)(&hub->events) ){+.+.}-{0:0} , at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff888144713218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline] ffff888144713218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff888144716578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] #3: ffff888144716578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] #3: ffff888144716578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] #3: ffff888144716578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline] #3: ffff888144716578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff88801cca9368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 2 locks held by kworker/u4:5/534: 1 lock held by khungtaskd/1667: #0: ffffffff8bf741e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6327 5 locks held by kworker/0:3/3824: #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888015954138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246 #1: ffffc900039efda8 ( (work_completion)(&hub->events) ){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff88801d087218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline] #2: ffff88801d087218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff888144792578 ( &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: ffff88814464c568 ( hcd->address0_mutex ){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 1 lock held by in:imklog/8141: 5 locks held by kworker/1:2/8447: #0: ffff888015954138 ( (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: ffffc9000181fda8 ( (work_completion)(&hub->events) ){+.+.}-{0:0} , at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff88814468c218 ( &dev->mutex ){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline] ){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537 #3: ffff88814468f578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] ffff88814468f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] ffff88814468f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] ffff88814468f578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline] ffff88814468f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff888144435d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 5 locks held by kworker/0:2/8491: #0: ffff888015954138 ((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: ffffc9000173fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250 #2: ffff888144707218 (&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: ffff88801cfca578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline] (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline] (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline] (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591 #4: ffff88801cd89168 ( hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582 3 locks held by syz-executor530/15874: #0: ffff8880b9d35198 ( &rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline] &rq->lock){-.-.}-{2:2}, at: __schedule+0x217/0x21a0 kernel/sched/core.c:4992 #1: ffff8880b9d1f948 ( &per_cpu_ptr(group->pcpu, cpu)->seq ){-.-.}-{0:0} , at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833 #2: ffff8880119b7538 ( &sig->wait_chldexit ){....}-{2:2} , at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137 3 locks held by syz-executor530/15920: #0: ffff8880b9c35198 ( &rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline] &rq->lock){-.-.}-{2:2}, at: __schedule+0x217/0x21a0 kernel/sched/core.c:4992 #1: ffff8880b9c1f948 ( &per_cpu_ptr(group->pcpu, cpu)->seq ){-.-.}-{0:0} , at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833 #2: ffff8880119b1a38 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137 3 locks held by syz-executor530/15957: #0: ffff8880b9d35198 ( &rq->lock ){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline] ){-.-.}-{2:2}, at: __schedule+0x217/0x21a0 kernel/sched/core.c:4992 #1: ffff8880b9d1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833