INFO: task kworker/0:0:5 blocked for more than 143 seconds. Not tainted 5.14.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:21808 pid: 5 ppid: 2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x947/0x22b0 kernel/sched/core.c:6287 schedule+0xcf/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa08/0x12b0 kernel/locking/mutex.c:729 device_lock include/linux/device.h:760 [inline] rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:42 [inline] rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:55 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1081 process_one_work+0x9bf/0x1620 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3c2/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/0:4:10337 blocked for more than 143 seconds. Not tainted 5.14.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:4 state:D stack:22360 pid:10337 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0x947/0x22b0 kernel/sched/core.c:6287 schedule+0xcf/0x270 kernel/sched/core.c:6366 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x176/0x280 kernel/sched/completion.c:138 flush_workqueue+0x3ed/0x15b0 kernel/workqueue.c:2869 flush_scheduled_work include/linux/workqueue.h:592 [inline] ath6kl_usb_flush_all drivers/net/wireless/ath/ath6kl/usb.c:476 [inline] hif_detach_htc drivers/net/wireless/ath/ath6kl/usb.c:856 [inline] ath6kl_usb_power_off+0xdc/0x140 drivers/net/wireless/ath/ath6kl/usb.c:1055 ath6kl_hif_power_off drivers/net/wireless/ath/ath6kl/hif-ops.h:143 [inline] ath6kl_core_init drivers/net/wireless/ath/ath6kl/core.c:257 [inline] ath6kl_core_init+0x236/0x11c0 drivers/net/wireless/ath/ath6kl/core.c:66 ath6kl_usb_probe+0xc40/0x1200 drivers/net/wireless/ath/ath6kl/usb.c:1155 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc35/0x21b0 drivers/base/core.c:3359 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc35/0x21b0 drivers/base/core.c:3359 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9bf/0x1620 kernel/workqueue.c:2297 process_scheduled_works kernel/workqueue.c:2360 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2446 kthread+0x3c2/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 3 locks held by kworker/0:0/5: #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: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x8a3/0x1620 kernel/workqueue.c:2268 #1: ffffc9000005fdb0 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x1620 kernel/workqueue.c:2272 #2: ffff88810f818220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88810f818220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_fail drivers/staging/rtl8712/hal_init.c:42 [inline] #2: ffff88810f818220 (&dev->mutex){....}-{3:3}, at: rtl871x_load_fw_cb+0x112/0x160 drivers/staging/rtl8712/hal_init.c:55 1 lock held by khungtaskd/1277: #0: ffffffff87681d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/4311: #0: ffff888104fbc5f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 2 locks held by agetty/4313: #0: ffff888117542098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc9000050b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 2 locks held by agetty/4318: #0: ffff888118d7b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc9000056b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 3 locks held by kworker/1:3/7060: #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x8a3/0x1620 kernel/workqueue.c:2268 #1: ffffc90004827db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x1620 kernel/workqueue.c:2272 #2: ffff88810f698220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88810f698220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 3 locks held by kworker/0:5/7359: #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x8a3/0x1620 kernel/workqueue.c:2268 #1: ffffc90005f1fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x1620 kernel/workqueue.c:2272 #2: ffff88810f878220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88810f878220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 5 locks held by kworker/0:4/10337: #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x8a3/0x1620 kernel/workqueue.c:2268 #1: ffffc90012fd7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x1620 kernel/workqueue.c:2272 #2: ffff88810f818220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88810f818220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88811fdae220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff88811fdae220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:944 #4: ffff88814f91d1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff88814f91d1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:944 2 locks held by agetty/28746: #0: ffff88811f074098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc900029fb2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 6 locks held by kworker/0:10/7898: #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff88810a149138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x8a3/0x1620 kernel/workqueue.c:2268 #1: ffffc9001073fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x1620 kernel/workqueue.c:2272 #2: ffff88810f7a8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88810f7a8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff888118a21220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff888118a21220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2216 #4: ffff8881168ce1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff8881168ce1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1032 [inline] #4: ffff8881168ce1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1233 [inline] #4: ffff8881168ce1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1259 #5: ffffffff87f8d150 (minor_rwsem){++++}-{3:3}, at: usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239 2 locks held by agetty/32104: #0: ffff888151595098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc9000266b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 2 locks held by login/4592: #0: ffff8881140fa098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff8881140fa130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:961 [inline] #1: ffff8881140fa130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:984 [inline] #1: ffff8881140fa130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x29f/0x910 drivers/tty/tty_io.c:1110 2 locks held by agetty/27305: #0: ffff888116bfd098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc9000596b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 2 locks held by syz-executor.5/12299: #0: ffffffff8802c3e8 (wdm_mutex){+.+.}-{3:3}, at: wdm_release+0x49/0x420 drivers/usb/class/cdc-wdm.c:764 #1: ffff88810ebde5b8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline] #1: ffff88810ebde5b8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_port_resume+0x2a6/0x1950 drivers/usb/core/hub.c:3644 2 locks held by syz-executor.2/12470: #0: ffffffff87f8d150 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39 #1: ffffffff8802c3e8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x59/0x540 drivers/usb/class/cdc-wdm.c:715 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1277 Comm: khungtaskd Not tainted 5.14.0-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+0x49/0x148 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1d5/0x1f0 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+0xc0f/0xf20 kernel/hung_task.c:295 kthread+0x3c2/0x4a0 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: 2649 Comm: systemd-journal Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x7fa5ca6dd1c0 Code: 00 48 8d 35 2a 3b 0e 00 48 8d 3d a2 3d 0e 00 ba 3d 0d 00 00 e8 81 7e fe ff ba ff ff ff ff e9 27 ff ff ff e8 72 7d fe ff 66 90 <41> 57 41 56 41 55 41 54 55 53 48 81 ec a8 01 00 00 48 8b 84 24 e0 RSP: 002b:00007ffcb39880a8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00005596e5cef040 RCX: 00000000000001a0 RDX: 0000000000000042 RSI: 00007ffcb39881d0 RDI: 00000000ffffffff RBP: 0000000000000042 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000069 R11: 0000000000000001 R12: 00007ffcb39881d0 R13: 00005596e5cef1d0 R14: 00007ffcb398b290 R15: 00007ffcb3988740 FS: 00007fa5caabf8c0 GS: 0000000000000000