INFO: task kworker/0:0:9 blocked for more than 147 seconds. Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:0 pid:9 tgid:9 ppid:2 task_flags:0x4288060 flags:0x00000010 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_timeout+0xac/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common+0x288/0x3f8 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x44/0x5c kernel/sched/completion.c:148 ath9k_hif_usb_disconnect+0xb4/0x1e8 drivers/net/wireless/ath/ath9k/hif_usb.c:1438 usb_unbind_interface+0x244/0x7c8 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x3f8/0x658 drivers/base/dd.c:1295 device_release_driver+0x28/0x38 drivers/base/dd.c:1318 bus_remove_device+0x310/0x3b0 drivers/base/bus.c:579 device_del+0x47c/0x808 drivers/base/core.c:3881 usb_disable_device+0x33c/0x780 drivers/usb/core/message.c:1418 usb_disconnect+0x284/0x7f8 drivers/usb/core/hub.c:2316 hub_port_connect drivers/usb/core/hub.c:5371 [inline] hub_port_connect_change drivers/usb/core/hub.c:5671 [inline] port_event drivers/usb/core/hub.c:5831 [inline] hub_event+0x1698/0x3cf0 drivers/usb/core/hub.c:5913 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 Showing all locks held in the system: 1 lock held by kthreadd/2: 1 lock held by kworker/R-kvfre/6: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 5 locks held by kworker/0:0/9: #0: ffff0000c1c82948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff800097627bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff0000cdf18198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #2: ffff0000cdf18198 (&dev->mutex){....}-{4:4}, at: hub_event+0x13c/0x3cf0 drivers/usb/core/hub.c:5859 #3: ffff0000f19eb198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #3: ffff0000f19eb198 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xdc/0x7f8 drivers/usb/core/hub.c:2307 #4: ffff0000d2c0c160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #4: ffff0000d2c0c160 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1094 [inline] #4: ffff0000d2c0c160 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0x9c/0x658 drivers/base/dd.c:1292 2 locks held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 1 lock held by kworker/R-mm_pe/14: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 3 locks held by kworker/1:0/24: 1 lock held by khungtaskd/32: #0: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/44: 6 locks held by kworker/u8:3/45: 2 locks held by pr/ttyAMA0/46: 3 locks held by kworker/u8:4/243: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bbb7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 4 locks held by kworker/u8:5/369: 3 locks held by kworker/u8:6/562: 3 locks held by kworker/u8:7/620: 3 locks held by kworker/u8:8/673: 3 locks held by kworker/u8:9/730: 4 locks held by kworker/u8:10/764: 3 locks held by kworker/u8:11/785: 4 locks held by kworker/u8:12/827: 3 locks held by kworker/u8:13/856: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009ccf7bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 4 locks held by kworker/1:2/1807: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009fd97bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000c8ac8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000c8ac8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 2 locks held by kworker/0:2/2305: 3 locks held by kworker/R-ipv6_/4144: #0: ffff0000d2d65948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a1eb7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4225: 2 locks held by udevd/6108: 2 locks held by getty/6254: #0: ffff0000d35ce0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b5ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6481: 2 locks held by kworker/0:3/6483: 1 lock held by syz-executor/6492: 2 locks held by syz-executor/6495: 3 locks held by syz-executor/6503: 1 lock held by kworker/R-wg-cr/6530: 1 lock held by kworker/R-wg-cr/6531: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3529 1 lock held by kworker/R-wg-cr/6534: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 2 locks held by kworker/0:4/6549: 2 locks held by kworker/0:5/6572: 3 locks held by kworker/u8:14/6591: 2 locks held by syz-executor/7534: 1 lock held by kworker/R-wg-cr/7662: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3529 1 lock held by kworker/R-wg-cr/7663: #0: ffff80008f3b0f48 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by udevd/7941: 1 lock held by dhcpcd/7947: 1 lock held by dhcpcd/7948: 3 locks held by kworker/u8:15/7949: =============================================