INFO: task kworker/1:1:26965 blocked for more than 143 seconds. Not tainted 6.2.0-rc5-syzkaller-00883-ge3e9fc7fa7ad #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:22848 pid:26965 ppid:2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:5293 [inline] __schedule+0xa20/0x27c0 kernel/sched/core.c:6606 schedule+0xda/0x1b0 kernel/sched/core.c:6682 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6741 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747 device_lock include/linux/device.h:831 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1133 [inline] ath9k_hif_usb_firmware_cb+0x3a9/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1266 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1107 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/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: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc9000007fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffff88810ea66190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff88810ea66190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x4810 drivers/usb/core/hub.c:5740 #3: ffff88810eab94f0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3148 [inline] #3: ffff88810eab94f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline] #3: ffff88810eab94f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] #3: ffff88810eab94f0 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5712 [inline] #3: ffff88810eab94f0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2778/0x4810 drivers/usb/core/hub.c:5794 #4: ffff88810e96bb68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5305 [inline] #4: ffff88810e96bb68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] #4: ffff88810e96bb68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5712 [inline] #4: ffff88810e96bb68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x27ad/0x4810 drivers/usb/core/hub.c:5794 1 lock held by rcu_tasks_kthre/11: #0: ffffffff87a97090 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 5 locks held by kworker/0:1/12: #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888108fd6138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900000cfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffff88810e9b6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff88810e9b6190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x4810 drivers/usb/core/hub.c:5740 #3: ffff8881f6838118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:537 [inline] #3: ffff8881f6838118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1358 [inline] #3: ffff8881f6838118 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1648 [inline] #3: ffff8881f6838118 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x24a/0x27c0 kernel/sched/core.c:6523 #4: ffffffff8bac01a8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:665 1 lock held by khungtaskd/26: #0: ffffffff87a97be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494 2 locks held by getty/2407: #0: ffff88810de51098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900000452f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177 7 locks held by kworker/1:0/22633: 3 locks held by kworker/1:1/26965: #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:636 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc9000f38fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0} , at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffff88810ea46190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline] #2: ffff88810ea46190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1133 [inline] #2: ffff88810ea46190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3a9/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1266 3 locks held by kworker/1:6/32755: 5 locks held by kworker/1:5/4502: 6 locks held by kworker/0:3/8584: 3 locks held by udevd/14577: #0: ffff88811a67e088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:240 [inline] #0: ffff88811a67e088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x18a/0x790 fs/kernfs/file.c:280 #1: ffff888129aef748 (kn->active#15){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:241 [inline] #1: ffff888129aef748 (kn->active#15){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ad/0x790 fs/kernfs/file.c:280 #2: ffff888118715190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:836 [inline] #2: ffff888118715190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:874 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller-00883-ge3e9fc7fa7ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc71/0xfc0 kernel/hung_task.c:377 kthread+0x2ea/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: 12 Comm: kworker/0:1 Not tainted 6.2.0-rc5-syzkaller-00883-ge3e9fc7fa7ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:__sanitizer_cov_trace_switch+0x79/0x90 kernel/kcov.c:325 Code: ff 49 39 de 75 e2 5b 5d 41 5c 41 5d 41 5e c3 48 83 f8 40 41 bd 07 00 00 00 74 c2 5b 5d 41 5c 41 5d 41 5e c3 41 bd 01 00 00 00 b1 41 bd 05 00 00 00 eb a9 66 66 2e 0f 1f 84 00 00 00 00 00 66 RSP: 0018:ffffc900000cefb8 EFLAGS: 00000246 RAX: 0000000000000008 RBX: 000000000000006c RCX: 0000000000000004 RDX: 1ffffffff0c910e4 RSI: ffffffff870c70e0 RDI: 0000000000000075 RBP: ffffffff870c70e0 R08: 0000000000000000 R09: 0000000000000075 R10: 000000000000006c R11: 0000000000000000 R12: 0000000000000075 R13: 0000000000000001 R14: 1ffff92000019e00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7fe670e110 CR3: 0000000134330000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: format_decode+0x3a3/0xad0 lib/vsprintf.c:2606 vsnprintf+0x155/0x14f0 lib/vsprintf.c:2748 sprintf+0xc0/0x100 lib/vsprintf.c:3000 print_time kernel/printk/printk.c:1358 [inline] info_print_prefix+0x248/0x340 kernel/printk/printk.c:1384 record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1433 console_emit_next_record.constprop.0+0x714/0x890 kernel/printk/printk.c:2808 console_flush_all+0x547/0x6e0 kernel/printk/printk.c:2889 console_unlock+0xb4/0x1f0 kernel/printk/printk.c:2966 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2359 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4698 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4709 __dev_printk+0xcf/0xf5 drivers/base/core.c:4721 _dev_info+0xd7/0x109 drivers/base/core.c:4767 announce_device drivers/usb/core/hub.c:2301 [inline] usb_new_device.cold+0x3d6/0x10ad drivers/usb/core/hub.c:2557 hub_port_connect drivers/usb/core/hub.c:5408 [inline] hub_port_connect_change drivers/usb/core/hub.c:5552 [inline] port_event drivers/usb/core/hub.c:5712 [inline] hub_event+0x2d58/0x4810 drivers/usb/core/hub.c:5794 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308