INFO: task kworker/1:4:5747 blocked for more than 143 seconds. Not tainted 6.3.0-rc6-syzkaller-g8f40fc080813 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:25912 pid:5747 ppid:2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:5307 [inline] __schedule+0xa90/0x2da0 kernel/sched/core.c:6625 schedule+0xde/0x1a0 kernel/sched/core.c:6701 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747 device_lock include/linux/device.h:832 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1146 [inline] ath9k_hif_usb_firmware_cb+0x3a9/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1279 request_firmware_work_func+0x130/0x240 drivers/base/firmware_loader/main.c:1107 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390 worker_thread+0x669/0x1090 kernel/workqueue.c:2537 kthread+0x2ee/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Showing all locks held in the system: 5 locks held by kworker/0:0/7: #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc9000007fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e9d5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e9d5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff88810e9e84f0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3147 [inline] #3: ffff88810e9e84f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5303 [inline] #3: ffff88810e9e84f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] #3: ffff88810e9e84f0 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline] #3: ffff88810e9e84f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2847/0x4ed0 drivers/usb/core/hub.c:5793 #4: ffff88810e28a368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline] #4: ffff88810e28a368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] #4: ffff88810e28a368 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline] #4: ffff88810e28a368 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x287c/0x4ed0 drivers/usb/core/hub.c:5793 1 lock held by rcu_tasks_kthre/11: #0: ffffffff87c9bb70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/12: #0: ffffffff87c9b870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510 5 locks held by kworker/0:1/13: #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc900000dfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e9bd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e9bd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff888114c1b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #3: ffff888114c1b190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #4: ffff888124d07118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #4: ffff888124d07118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 1 lock held by khungtaskd/26: #0: ffffffff87c9c6c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495 5 locks held by kworker/0:2/2316: #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc9000672fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e8d5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e8d5190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff88812579b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #4: ffff88811b274118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] ffff88811b274118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 3 locks held by acpid/2338: #0: ffff888126d11110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open_device drivers/input/evdev.c:393 [inline] #0: ffff888126d11110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open+0x2f7/0x6a0 drivers/input/evdev.c:487 #1: ffff88812579f2c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_open_device+0x4e/0x320 drivers/input/input.c:632 #2: ffffffff87ca79b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #2: ffffffff87ca79b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:989 2 locks held by getty/2412: #0: ffff88811043b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900000452f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 6 locks held by kworker/0:3/5234: #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc90001747da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e90d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e90d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff88812796f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #3: ffff88812796f190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x8a0 drivers/usb/core/hub.c:2229 #4: ffff88812579a118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #4: ffff88812579a118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline] #4: ffff88812579a118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1260 #5: ffff88812579f2c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_disconnect_device drivers/input/input.c:759 [inline] #5: ffff88812579f2c0 (&dev->mutex#2){+.+.}-{3:3}, at: __input_unregister_device+0x24/0x450 drivers/input/input.c:2215 1 lock held by udevd/5719: #0: ffff888126d11110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open_device drivers/input/evdev.c:393 [inline] #0: ffff888126d11110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_open+0x2f7/0x6a0 drivers/input/evdev.c:487 2 locks held by kworker/0:5/5733: #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888100072538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc9000e3b7da8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 3 locks held by kworker/0:6/5743: #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109007938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc900025efda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e9ed190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e9ed190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 3 locks held by kworker/1:4/5747: #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361 #1: ffffc9000ed5fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365 #2: ffff88810e8d5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810e8d5190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1146 [inline] #2: ffff88810e8d5190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3a9/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1279 3 locks held by kworker/1:5/5860: 1 lock held by syz-executor.3/8037: #0: ffffffff87ca79b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #0: ffffffff87ca79b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-g8f40fc080813 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x273/0x2d0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xe16/0x1090 kernel/hung_task.c:379 kthread+0x2ee/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5743 Comm: kworker/0:6 Not tainted 6.3.0-rc6-syzkaller-g8f40fc080813 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:write_comp_data+0x85/0x90 kernel/kcov.c:262 Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 40 0f b6 RSP: 0018:ffffc900025eef70 EFLAGS: 00000297 RAX: 0000000000000002 RBX: 0000000000000003 RCX: ffffffff861e785f RDX: ffff88811896b900 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffffff872a4180 R08: 0000000000000001 R09: 0000000000000063 R10: 0000000000000075 R11: 0000000000000000 R12: 0000000000000075 R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdde0e4d58 CR3: 0000000138992000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:340 format_decode+0x3df/0xb50 lib/vsprintf.c:2606 vsnprintf+0x161/0x1710 lib/vsprintf.c:2748 sprintf+0xc4/0x100 lib/vsprintf.c:3000 print_time kernel/printk/printk.c:1336 [inline] info_print_prefix+0x248/0x340 kernel/printk/printk.c:1362 record_print_text+0x14d/0x3f0 kernel/printk/printk.c:1411 printk_get_next_message+0x267/0x710 kernel/printk/printk.c:2818 console_emit_next_record kernel/printk/printk.c:2853 [inline] console_flush_all+0x371/0xcc0 kernel/printk/printk.c:2942 console_unlock+0xb8/0x1f0 kernel/printk/printk.c:3016 vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2316 dev_vprintk_emit drivers/base/core.c:4805 [inline] dev_printk_emit+0xda/0x120 drivers/base/core.c:4816 __dev_printk+0xf8/0x270 drivers/base/core.c:4828 _dev_info+0xdc/0x120 drivers/base/core.c:4874 show_string drivers/usb/core/hub.c:2289 [inline] announce_device drivers/usb/core/hub.c:2308 [inline] usb_new_device+0x8f5/0x19d0 drivers/usb/core/hub.c:2556 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] port_event drivers/usb/core/hub.c:5711 [inline] hub_event+0x2e3d/0x4ed0 drivers/usb/core/hub.c:5793 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390 worker_thread+0x669/0x1090 kernel/workqueue.c:2537 kthread+0x2ee/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308