INFO: task kworker/1:1:26 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:0     pid:26    tgid:26    ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events reg_todo
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_process_self_managed_hints+0x98/0x1dc net/wireless/reg.c:3179
 reg_todo+0x81c/0x98c net/wireless/reg.c:3192
 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
INFO: task kworker/u8:16:5122 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:16   state:D stack:0     pid:5122  tgid:5122  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events_power_efficient crda_timeout_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
 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
 crda_timeout_work+0x20/0x94 net/wireless/reg.c:541
 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:
3 locks held by kworker/u8:0/12:
4 locks held by kworker/1:1/26:
 #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff800097de7be0 (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: ffff0000e1a18788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6363 [inline]
 #3: ffff0000e1a18788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0x98/0x1dc net/wireless/reg.c:3179
1 lock held by khungtaskd/32:
 #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u8:3/42:
1 lock held by pr/ttyAMA-1/43:
2 locks held by kworker/u8:4/314:
 #0: ffff0000c0031948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff800099cd7be0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
3 locks held by kworker/u8:5/531:
3 locks held by kworker/u8:7/1561:
2 locks held by kworker/1:2/1779:
3 locks held by kworker/u8:8/1873:
3 locks held by kworker/u8:9/3125:
3 locks held by kworker/u8:10/3238:
3 locks held by kworker/u8:11/3279:
 #0: ffff0000d56b1948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a30f7be0 ((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/u8:12/3476:
3 locks held by kworker/u8:14/4338:
3 locks held by kworker/u8:15/4895:
3 locks held by kworker/u8:16/5122:
 #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a10f7be0 ((crda_timeout).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
2 locks held by kworker/u8:17/5166:
3 locks held by kworker/u8:19/5819:
2 locks held by dhcpcd/6264:
3 locks held by dhcpcd/6265:
2 locks held by crond/6339:
2 locks held by getty/6350:
 #0: ffff0000dc0e80a0 (&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
2 locks held by syz-executor/6551:
2 locks held by udevd/6562:
2 locks held by syz-executor/6570:
1 lock held by syz-executor/6571:
 #0: ffff800092ae4928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
1 lock held by syz-executor/6576:
2 locks held by kworker/0:3/6579:
2 locks held by kworker/1:6/6656:
5 locks held by kworker/1:8/6693:
1 lock held by syz-executor/7143:
4 locks held by udevd/7463:
2 locks held by kworker/u8:23/7729:
4 locks held by syz-executor/7890:
3 locks held by kworker/u8:24/8199:
3 locks held by kworker/u8:25/8200:
3 locks held by kworker/u8:26/8201:
2 locks held by kworker/u8:27/8203:
3 locks held by kworker/u8:28/8205:
 #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff80009d297be0 ((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
2 locks held by kworker/1:12/8280:
2 locks held by syz-executor/8285:
2 locks held by kworker/1:14/8288:
3 locks held by kworker/u8:30/8289:
2 locks held by kworker/1:15/8290:

=============================================