INFO: task kworker/0:4:6497 blocked for more than 148 seconds.
      Not tainted 6.15.0-rc6-syzkaller-gc919f08732cc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4     state:D stack:0     pid:6497  tgid:6497  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events reg_todo
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_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917
 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678
 __mutex_lock kernel/locking/mutex.c:746 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798
 class_wiphy_constructor include/net/cfg80211.h:6092 [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+0x7e8/0x156c 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:
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/32:
 #0: ffff80008f508aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u8:2/44:
3 locks held by kworker/u8:3/45:
1 lock held by pr/ttyAMA0/46:
3 locks held by kworker/u8:4/135:
3 locks held by kworker/u8:5/559:
3 locks held by kworker/u8:6/635:
3 locks held by kworker/u8:7/649:
4 locks held by kworker/u8:8/688:
3 locks held by kworker/u8:9/2263:
3 locks held by kworker/R-ipv6_/4141:
 #0: ffff0000d21e3948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff8000a19e7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by kworker/R-bat_e/4222:
1 lock held by klogd/6094:
2 locks held by udevd/6105:
2 locks held by dhcpcd/6159:
1 lock held by dhcpcd/6160:
2 locks held by getty/6256:
 #0: ffff0000d7b600a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009b5eb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/6460:
2 locks held by udevd/6480:
1 lock held by udevd/6481:
 #0: ffff0000c1544cb0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:877 [inline]
 #0: ffff0000c1544cb0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:808
4 locks held by syz-executor/6488:
 #0: ffff0000ddd74d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
 #0: ffff0000ddd74d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x1e8/0x4a8 net/bluetooth/hci_core.c:2678
 #1: ffff0000ddd74078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x4c4/0x1154 net/bluetooth/hci_sync.c:5213
 #2: ffff8000925f18c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2064 [inline]
 #2: ffff8000925f18c8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xac/0x214 net/bluetooth/hci_conn.c:2534
 #3: ffff0000dd317b38 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x74/0x5f0 net/bluetooth/l2cap_core.c:1761
4 locks held by syz-executor/6489:
3 locks held by syz-executor/6490:
2 locks held by syz-executor/6494:
4 locks held by kworker/0:4/6497:
 #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff8000a1f47bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
 #3: ffff0000d5410768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline]
 #3: ffff0000d5410768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209
2 locks held by syz-executor/6498:
1 lock held by udevd/6603:
 #0: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:877 [inline]
 #0: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:808
3 locks held by kworker/u8:10/8039:
 #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
 #1: ffff80009dc87bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by kworker/u8:11/8041:

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