INFO: task kworker/1:6:10823 blocked for more than 143 seconds. Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:6 state:D stack:22256 pid:10823 tgid:10823 ppid:2 flags:0x00004000 Workqueue: events request_firmware_work_func Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xca8/0x3100 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:990 [inline] ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline] ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296 request_firmware_work_func+0x13a/0x240 drivers/base/firmware_loader/main.c:1163 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:243 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 1 lock held by klogd/2383: #0: ffff8881f673bb18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x1f/0x30 kernel/sched/core.c:559 2 locks held by getty/2452: #0: ffff8881096df0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 6 locks held by kworker/0:4/4787: 5 locks held by kworker/0:5/4791: 4 locks held by udevd/4801: #0: ffff888119d46448 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff888130337088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154 #2: ffff88810b7628c0 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x71/0x230 fs/kernfs/file.c:155 #3: ffff88812ef3d190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline] #3: ffff88812ef3d190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 3 locks held by kworker/1:6/10823: #0: ffff888100088938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc9000d17fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0} , at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff88810ab4f190 (&dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:990 [inline] , at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline] , at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296 5 locks held by kworker/0:2/11606: 5 locks held by kworker/1:1/19888: #0: ffff888106a96138 ( (wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc90001957d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff88810afd2190 (&dev->mutex){....}-{3:3} , at: device_lock include/linux/device.h:990 [inline] , at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5840 #3: ffff888136c75190 (&dev->mutex ){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] ){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 #4: ffff888111991160 (&dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:990 [inline] , at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005 3 locks held by kworker/1:0/22255: #0: ffff888106a96138 ( (wq_completion)usb_hub_wq){+.+.}-{0:0} , at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc9000696fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff88810b318190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff88810b318190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5840 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf87/0x1210 kernel/hung_task.c:379 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:243 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19888 Comm: kworker/1:1 Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: usb_hub_wq hub_event RIP: 0010:kasan_check_range+0x12/0x190 mm/kasan/generic.c:188 Code: b5 00 5b 5d 41 5c 41 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 66 0f 1f 00 48 85 f6 0f 84 48 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff RSP: 0018:ffffc900019574d0 EFLAGS: 00000002 RAX: ffffffff8b752ae8 RBX: 000000000000007a RCX: ffffffff812d8d2e RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b752ae8 RBP: ffffc90001957628 R08: 0000000000000000 R09: fffffbfff16ea55d R10: ffffffff8b752aef R11: 0000000000000004 R12: ffff888116578000 R13: 0000000000000100 R14: 0000000000000008 R15: 1ffff9200032aea4 FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e624000 CR3: 000000011224c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228 mark_lock+0xb5/0xc50 kernel/locking/lockdep.c:4656 mark_usage kernel/locking/lockdep.c:4599 [inline] __lock_acquire+0x9aa/0x3b30 kernel/locking/lockdep.c:5091 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 down_write+0x3a/0x50 kernel/locking/rwsem.c:1579 kernfs_remove+0x71/0xa0 fs/kernfs/dir.c:1518 sysfs_remove_dir+0xc5/0x100 fs/sysfs/dir.c:101 __kobject_del+0xe2/0x1f0 lib/kobject.c:604 kobject_del lib/kobject.c:627 [inline] kobject_del+0x3f/0x60 lib/kobject.c:619 device_del+0x66d/0xa50 drivers/base/core.c:3848 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x910 drivers/usb/core/hub.c:2296 hub_port_connect drivers/usb/core/hub.c:5352 [inline] hub_port_connect_change drivers/usb/core/hub.c:5652 [inline] port_event drivers/usb/core/hub.c:5812 [inline] hub_event+0x1be0/0x4f40 drivers/usb/core/hub.c:5894 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:243