INFO: task kworker/u8:11:3479 blocked for more than 147 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:11 state:D stack:0 pid:3479 tgid:3479 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events_power_efficient reg_check_chans_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7017 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:692 __mutex_lock kernel/locking/mutex.c:776 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:828 class_wiphy_constructor include/net/cfg80211.h:6363 [inline] reg_leave_invalid_chans net/wireless/reg.c:2441 [inline] reg_check_chans_work+0x114/0xdf0 net/wireless/reg.c:2456 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Showing all locks held in the system: 5 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 2 locks held by kworker/1:0/24: 2 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 5 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 2 locks held by pr/ttyAMA-1/43: 3 locks held by kworker/1:2/44: 2 locks held by kswapd0/75: 3 locks held by kworker/u8:4/478: 3 locks held by kworker/u8:5/701: 1 lock held by kworker/u8:6/819: 3 locks held by kworker/u8:8/2098: 3 locks held by kworker/u8:9/2139: 2 locks held by kworker/u8:10/2435: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a2027be0 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 4 locks held by kworker/u8:11/3479: #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a36e7be0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000fa1f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6363 [inline] #3: ffff0000fa1f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2441 [inline] #3: ffff0000fa1f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x114/0xdf0 net/wireless/reg.c:2456 3 locks held by kworker/u8:13/3807: 3 locks held by kworker/0:3/3992: #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a2647be0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:15/4101: 3 locks held by kworker/R-ipv6_/4250: #0: ffff0000d40e8948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a1947bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:16/4508: 3 locks held by kworker/u8:17/4738: 2 locks held by kworker/u8:18/5451: 3 locks held by kworker/u8:20/5752: 1 lock held by klogd/6200: 2 locks held by udevd/6211: 1 lock held by dhcpcd/6266: #0: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by crond/6340: 2 locks held by getty/6354: #0: ffff0000dbec80a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6555: 1 lock held by syz-executor/6574: 1 lock held by syz-executor/6576: 2 locks held by kworker/1:3/6618: 4 locks held by kworker/1:5/6632: 3 locks held by kworker/0:5/6674: 4 locks held by kworker/0:7/6688: #0: ffff0000fa13dd48 ((wq_completion)wg-kex-wg2#16){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000a2e47be0 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))); (typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 #2: ffff0000d6601348 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x130/0x724 drivers/net/wireguard/noise.c:598 #3: ffff0000de6b2ad8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x3f0/0x724 drivers/net/wireguard/noise.c:632 2 locks held by syz-executor/7064: 1 lock held by syz-executor/7107: 2 locks held by syz-executor/7718: #0: ffff0000f96b4ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:499 [inline] #0: ffff0000f96b4ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x1fc/0x52c net/bluetooth/hci_core.c:2715 #1: ffff0000f96b40c0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x4c4/0xfd0 net/bluetooth/hci_sync.c:5314 2 locks held by kworker/u8:21/7989: 3 locks held by kworker/u8:22/7992: 3 locks held by kworker/u8:23/7994: 3 locks held by kworker/u8:24/7995: 3 locks held by syz-executor/7996: 2 locks held by kworker/1:11/7997: 3 locks held by kworker/u8:25/7998: 4 locks held by kworker/u8:26/8001: =============================================