INFO: task kworker/1:1:32 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:25232 pid: 32 ppid: 2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x941/0x22b0 kernel/sched/core.c:5938 schedule+0xcf/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x786/0x1060 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:756 [inline] rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1083 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:2:2620 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:25232 pid: 2620 ppid: 2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x941/0x22b0 kernel/sched/core.c:5938 schedule+0xcf/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x786/0x1060 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:756 [inline] rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1083 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:17:14811 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:17 state:D stack:25752 pid:14811 ppid: 2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x941/0x22b0 kernel/sched/core.c:5938 schedule+0xcf/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x786/0x1060 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:756 [inline] rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1083 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 5 locks held by kworker/0:1/7: #0: ffff888109bda938 ( (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:620 [inline] , at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] , at: set_work_data kernel/workqueue.c:617 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] , at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc9000007fdb0 ( (work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fd20220 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:756 [inline] , at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88810fd235b0 (&port_dev->status_lock){+.+.}-{3:3} , at: usb_lock_port drivers/usb/core/hub.c:3086 [inline] , at: hub_port_connect drivers/usb/core/hub.c:5279 [inline] , at: hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] , at: port_event drivers/usb/core/hub.c:5634 [inline] , at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5716 #4: ffff88810fc6ee68 (hcd->address0_mutex){+.+.}-{3:3}, at: trace_sched_stat_runtime include/trace/events/sched.h:517 [inline] #4: ffff88810fc6ee68 (hcd->address0_mutex){+.+.}-{3:3}, at: update_curr+0x289/0x7d0 kernel/sched/fair.c:820 3 locks held by kworker/1:1/32: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc900001d7db0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 1 lock held by khungtaskd/1276: #0: ffffffff8767e640 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6446 3 locks held by kworker/0:2/2221: #0: ffff888109bda938 ((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:620 [inline] , at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] , at: set_work_data kernel/workqueue.c:617 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] , at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90007097db0 ((work_completion)(&hub->events)){+.+.}-{0:0} , at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fc40220 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:756 [inline] , at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 3 locks held by kworker/1:2/2620: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90007db7db0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by systemd-udevd/2660: 3 locks held by kworker/1:3/2665: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc900001f7db0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 1 lock held by in:imklog/4300: 3 locks held by kworker/0:4/7228: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90005f5fdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fc40220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fc40220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fc40220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by kworker/1:4/7884: #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc9001013fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 5 locks held by kworker/1:5/7898: 3 locks held by kworker/0:7/8858: #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90011f0fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fa00220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fa00220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 3 locks held by kworker/0:13/8874: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc900121cfdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fd20220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fd20220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fd20220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 10 locks held by kworker/1:9/8989: 3 locks held by kworker/1:11/9185: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90012c3fdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by kworker/1:12/9188: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90012c4fdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by kworker/1:13/9195: #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888109bda938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90012c9fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fb68220 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:756 [inline] , at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 9 locks held by kworker/1:16/11706: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc9001179fdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fae8220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 #3: ffff88811bf04220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #3: ffff88811bf04220 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1028 [inline] #3: ffff88811bf04220 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1229 [inline] #3: ffff88811bf04220 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1255 #4: ffff8881193db1a8 (&dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:756 [inline] , at: __device_driver_lock drivers/base/dd.c:1028 [inline] , at: device_release_driver_internal drivers/base/dd.c:1229 [inline] , at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1255 #5: ffff8881193dc1a8 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:756 [inline] , at: __device_driver_lock drivers/base/dd.c:1028 [inline] , at: device_release_driver_internal drivers/base/dd.c:1229 [inline] , at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1255 #6: ffff8881165081a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #6: ffff8881165081a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1028 [inline] #6: ffff8881165081a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1229 [inline] #6: ffff8881165081a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1255 #7: ffff88810faeb5b0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline] (&port_dev->status_lock){+.+.}-{3:3}, at: usb_reset_device+0x4b4/0x9a0 drivers/usb/core/hub.c:6099 #8: ffff88810faad768 (hcd->bandwidth_mutex){+.+.}-{3:3}, at: usb_reset_and_verify_device+0x5ae/0xdf0 drivers/usb/core/hub.c:5942 3 locks held by kworker/1:17/14811: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90010edfdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fa38220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by kworker/1:0/31393: #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90007507db0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:43 [inline] #2: ffff88810fb68220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:56 3 locks held by systemd-udevd/4582: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1276 Comm: khungtaskd Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x46/0xe0 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1da/0x200 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xcf4/0xf90 kernel/hung_task.c:295 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8858 Comm: kworker/0:7 Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:io_serial_out+0x8a/0xa0 drivers/tty/serial/8250/8250_port.c:458 Code: fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 17 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 e8 8a 19 2d ff eb a5 e8 b3 19 2d ff eb e2 90 RSP: 0018:ffffc90011f0f430 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: ffffffff8242e3a1 RDI: ffffffff8ac0a180 RBP: ffffffff8ac0a140 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8242e392 R11: 000000000000001f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8ac0a190 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5c00155000 CR3: 000000013de52000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_out include/linux/serial_core.h:268 [inline] serial8250_console_write+0x95b/0xb70 drivers/tty/serial/8250/8250_port.c:3354 call_console_drivers kernel/printk/printk.c:1938 [inline] console_unlock+0x85b/0xc20 kernel/printk/printk.c:2643 vprintk_emit+0x20a/0x580 kernel/printk/printk.c:2174 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4556 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4567 __dev_printk+0xcf/0xf5 drivers/base/core.c:4579 _dev_info+0xd7/0x109 drivers/base/core.c:4625 hub_port_init.cold+0xbe/0x36d drivers/usb/core/hub.c:4768 hub_port_connect drivers/usb/core/hub.c:5280 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x2190/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276 process_scheduled_works kernel/workqueue.c:2338 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2424 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: fe 48 8d decb -0x73(%rax) 3: 7d 40 jge 0x45 5: 44 89 e1 mov %r12d,%ecx 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 48 89 fa mov %rdi,%rdx 15: d3 e3 shl %cl,%ebx 17: 48 c1 ea 03 shr $0x3,%rdx 1b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1f: 75 17 jne 0x38 21: 03 5d 40 add 0x40(%rbp),%ebx 24: 44 89 e8 mov %r13d,%eax 27: 89 da mov %ebx,%edx 29: ee out %al,(%dx) * 2a: 5b pop %rbx <-- trapping instruction 2b: 5d pop %rbp 2c: 41 5c pop %r12 2e: 41 5d pop %r13 30: c3 retq 31: e8 8a 19 2d ff callq 0xff2d19c0 36: eb a5 jmp 0xffffffdd 38: e8 b3 19 2d ff callq 0xff2d19f0 3d: eb e2 jmp 0x21 3f: 90 nop