INFO: task kworker/1:4:6600 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4     state:D stack:0     pid:6600  tgid:6600  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:5325 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7026
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7083
 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:676
 __mutex_lock kernel/locking/mutex.c:760 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812
 class_wiphy_constructor include/net/cfg80211.h:6358 [inline]
 reg_process_self_managed_hints+0xc8/0x1dc net/wireless/reg.c:3179
 reg_todo+0x834/0x968 net/wireless/reg.c:3192
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3427
 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:
1 lock held by kthreadd/2:
2 locks held by kworker/0:0/9:
1 lock held by kworker/0:1/11:
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/15:
3 locks held by kworker/1:0/24:
 #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff800097b27be0 ((work_completion)(&sbi->s_error_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff0000d3740088 (&sbi->sb_lock){++++}-{4:4}, at: f2fs_down_write fs/f2fs/f2fs.h:2294 [inline]
 #2: ffff0000d3740088 (&sbi->sb_lock){++++}-{4:4}, at: f2fs_record_stop_reason fs/f2fs/super.c:4515 [inline]
 #2: ffff0000d3740088 (&sbi->sb_lock){++++}-{4:4}, at: f2fs_record_error_work+0x5c/0x178 fs/f2fs/super.c:4667
2 locks held by kworker/1:1/26:
1 lock held by khungtaskd/32:
 #0: ffff80008f76b660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
2 locks held by kworker/R-write/34:
3 locks held by kworker/u8:2/41:
3 locks held by kworker/u8:3/42:
 #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff8000990c7be0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff8000928577a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/u8:4/573:
3 locks held by kworker/u8:5/769:
2 locks held by kworker/u8:6/1842:
4 locks held by kworker/0:2/2356:
3 locks held by kworker/u8:7/4164:
3 locks held by kworker/R-ipv6_/4235:
 #0: ffff0000d2df7948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff80009daf7bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff8000928577a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by kworker/R-bat_e/4311:
3 locks held by kworker/u8:8/4834:
1 lock held by klogd/6181:
2 locks held by udevd/6192:
2 locks held by getty/6334:
 #0: ffff0000d2d5c0a0 (
&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bb2b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
2 locks held by kworker/1:3/6551:
4 locks held by syz-executor/6552:
4 locks held by syz-executor/6555:
3 locks held by syz-executor/6556:
4 locks held by kworker/1:4/6600:
 #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff8000a1567be0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff8000928577a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
 #3: ffff0000cef20788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6358 [inline]
 #3: ffff0000cef20788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc8/0x1dc net/wireless/reg.c:3179
3 locks held by kworker/1:6/6614:
2 locks held by kworker/1:7/6621:
2 locks held by kworker/0:3/6634:
2 locks held by kworker/1:8/6661:
3 locks held by kworker/0:4/6664:
3 locks held by kworker/0:5/6762:
2 locks held by syz-executor/6852:
 #0: ffff0000d29aa0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
 #0: ffff0000d29aa0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
 #0: ffff0000d29aa0e0 (&type->s_umount_key#50){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505
 #1: ffff0000caf0e820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
 #1: ffff0000caf0e820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x16c/0x870 fs/fs-writeback.c:2871
1 lock held by syz.2.160/7423:
3 locks held by dhcpcd-run-hook/7497:
3 locks held by kworker/u8:9/7510:
3 locks held by kworker/u8:10/7511:
3 locks held by kworker/u8:11/7513:
 #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff80009cbb7be0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff8000928577a8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/u8:12/7514:
2 locks held by kworker/0:7/7518:
1 lock held by syz-executor/7519:

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