INFO: task kworker/1:3:6590 blocked for more than 143 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:0 pid:6590 tgid:6590 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events reg_todo Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6936 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 class_wiphy_constructor include/net/cfg80211.h:6062 [inline] reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 reg_todo+0x834/0x968 net/wireless/reg.c:3222 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Showing all locks held in the system: 1 lock held by kthreadd/2: 1 lock held by kworker/R-kvfre/6: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 2 locks held by kworker/0:0/9: 1 lock held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 1 lock held by kworker/R-mm_pe/13: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3531 3 locks held by kworker/u8:1/14: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff800097ab7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/1:0/24: 2 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 1 lock held by pr/ttyAMA0/43: 3 locks held by kworker/u8:4/189: 3 locks held by kworker/u8:5/286: 3 locks held by kworker/u8:6/569: 4 locks held by kworker/u8:7/644: 3 locks held by kworker/u8:8/730: 3 locks held by kworker/u8:9/2128: 2 locks held by kworker/0:2/3919: 3 locks held by kworker/R-ipv6_/4173: #0: ffff0000d1cf1148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0bc7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4254: 3 locks held by kworker/u8:10/4471: 3 locks held by kworker/u8:11/4511: 1 lock held by klogd/6133: 3 locks held by udevd/6144: 2 locks held by getty/6296: #0: ffff0000d29950a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba3e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 5 locks held by syz-executor/6530: 3 locks held by syz-executor/6531: 2 locks held by kworker/0:3/6534: 1 lock held by kworker/R-wg-cr/6555: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3531 1 lock held by kworker/R-wg-cr/6557: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6558: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6559: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6562: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6570: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6571: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/6572: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3531 2 locks held by kworker/0:4/6583: 4 locks held by kworker/1:3/6590: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a39a7bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000f97c0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000f97c0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 4 locks held by kworker/1:5/6598: 2 locks held by kworker/0:5/6637: 1 lock held by kworker/1:7/6639: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/7344: 1 lock held by kworker/R-wg-cr/7346: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by kworker/R-wg-cr/7347: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 4 locks held by syz-executor/7822: 1 lock held by kworker/R-wg-cr/7917: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3531 1 lock held by kworker/R-wg-cr/7918: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2736 [inline] #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0x86c/0xec8 kernel/workqueue.c:3531 1 lock held by kworker/R-wg-cr/7920: #0: ffff80008f7113c8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 1 lock held by syz.6.230/8248: 3 locks held by dhcpcd-run-hook/8270: 3 locks held by kworker/u8:12/8277: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009c397bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/u8:13/8278: 3 locks held by kworker/0:6/8279: 3 locks held by syz-executor/8282: =============================================