INFO: task kworker/1:0:25 blocked for more than 143 seconds. Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:0 pid:25 tgid:25 ppid:2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1744/0x27f0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6848 schedule_timeout+0xb4/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common+0x30c/0x468 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+0x48/0x60 kernel/sched/completion.c:148 ath9k_hif_usb_disconnect+0xb4/0x1e8 drivers/net/wireless/ath/ath9k/hif_usb.c:1438 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296 device_release_driver+0x28/0x38 drivers/base/dd.c:1319 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:576 device_del+0x480/0x828 drivers/base/core.c:3854 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2304 hub_port_connect drivers/usb/core/hub.c:5363 [inline] hub_port_connect_change drivers/usb/core/hub.c:5663 [inline] port_event drivers/usb/core/hub.c:5823 [inline] hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5905 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Showing all locks held in the system: 3 locks held by init/1: 3 locks held by ksoftirqd/1/24: 5 locks held by kworker/1:0/25: #0: ffff0000c277e148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff800097c17c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff0000cd69a190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #2: ffff0000cd69a190 (&dev->mutex){....}-{4:4}, at: hub_event+0x1bc/0x4280 drivers/usb/core/hub.c:5851 #3: ffff0000efc95190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff0000efc95190 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xec/0x808 drivers/usb/core/hub.c:2295 #4: ffff0000cf414160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #4: ffff0000cf414160 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff0000cf414160 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xbc/0x698 drivers/base/dd.c:1293 1 lock held by khungtaskd/31: #0: ffff80008fbf3160 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 7 locks held by kworker/u8:3/44: #0: ffff0000c1899948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff8000991a7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff800092969850 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x13c/0xa34 net/core/net_namespace.c:602 #3: ffff0000cb7680e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff0000cb7680e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff0000cb7680e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x114/0x418 net/devlink/core.c:506 #4: ffff0000d2501250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff0000d2501250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff0000d2501250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x124/0x418 net/devlink/core.c:506 #5: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #6: ffff80008fa8fc10 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6063 [inline] #6: ffff80008fa8fc10 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x518/0x1c6c net/core/dev.c:11526 3 locks held by kworker/u8:7/2116: #0: ffff0000d2a52148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff8000a0e67c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by klogd/6040: 2 locks held by getty/6195: #0: ffff0000d2c540a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bacb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:3/6425: 3 locks held by kworker/1:6/6520: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff8000a27b7c20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff80008fa9e5f0 (umhelper_sem){++++}-{4:4}, at: usermodehelper_read_lock_wait+0x138/0x244 kernel/umh.c:246 3 locks held by kworker/u8:10/7106: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff8000a0487c20 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:11/7598: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3210 #1: ffff8000a02b7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3210 #2: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8480: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz-executor/8497: #0: ffff800092969850 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x290/0x4ac net/core/net_namespace.c:512 #1: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz.7.299/8501: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz-executor/8502: #0: ffff800092969850 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x290/0x4ac net/core/net_namespace.c:512 #1: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz-executor/8534: #0: ffff800092969850 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x290/0x4ac net/core/net_namespace.c:512 #1: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz.4.308/8542: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8553: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline] #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xb30/0x1adc net/core/rtnetlink.c:4011 1 lock held by syz-executor/8563: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8569: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8572: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/8583: #0: ffff800092975be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 =============================================