INFO: task kworker/u8:14:4097 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:14   state:D stack:0     pid:4097  tgid:4097  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:741 (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
INFO: task kworker/u8:16:6746 blocked for more than 146 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:6746  tgid:6746  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: ipv6_addrconf addrconf_dad_work
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (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
 rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 addrconf_dad_work+0x100/0x10cc net/ipv6/addrconf.c:4194
 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:
4 locks held by kworker/R-netns/8:
 #0: ffff0000c1843148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff800097cb7bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff800092ad71f0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf0/0x638 net/core/net_namespace.c:670
 #3: ffff800092ae4168 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by kworker/0:1/10:
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/13:
3 locks held by kworker/1:0/24:
4 locks held by kworker/1:1/26:
1 lock held by khungtaskd/32:
 #0: ffff80008fa5b520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
6 locks held by kworker/R-write/34:
 #0: ffff0000c1ff3148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff800097f77bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff0000daffe0e0 (&type->s_umount_key#30){++++}-{4:4}, at: super_trylock_shared+0x24/0xdc fs/super.c:563
 #3: ffff0000db400b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
 #3: ffff0000db400b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1820 [inline]
 #3: ffff0000db400b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x150/0x2a0 fs/ext4/inode.c:3025
 #4: ffff0000db402950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe4c/0x10dc fs/jbd2/transaction.c:442
 #5: ffff0000d17595b0 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x69c/0x1548 fs/ext4/inode.c:815
3 locks held by kworker/u8:2/41:
3 locks held by kworker/u8:3/42:
1 lock held by pr/ttyAMA-1/43:
4 locks held by kworker/1:2/60:
3 locks held by kworker/u8:4/76:
3 locks held by kworker/u8:5/153:
3 locks held by kworker/u8:6/284:
3 locks held by kworker/u8:7/396:
3 locks held by kworker/u8:8/451:
3 locks held by kworker/u8:9/673:
3 locks held by kworker/u8:10/715:
1 lock held by kworker/u8:11/838:
3 locks held by kworker/0:2/1545:
3 locks held by kworker/u8:12/2761:
3 locks held by kworker/u8:13/3211:
4 locks held by kworker/u8:14/4097:
 #0: ffff0000c0032148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a1957be0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff800092ae4168 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
 #3: ffff0000d55f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6363 [inline]
 #3: ffff0000d55f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2441 [inline]
 #3: ffff0000d55f0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x114/0xdf0 net/wireless/reg.c:2456
2 locks held by kworker/u8:15/4852:
 #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff80009f6c7be0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
1 lock held by jbd2/nvme0n1p2-/6170:
4 locks held by kworker/0:3/6172:
1 lock held by klogd/6195:
3 locks held by dhcpcd/6261:
2 locks held by crond/6335:
2 locks held by getty/6347:
 #0: ffff0000d50d20a0 (&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/6554:
1 lock held by udevd/6556:
2 locks held by udevd/6558:
3 locks held by syz-executor/6570:
5 locks held by syz-executor/6571:
4 locks held by kworker/1:5/6634:
3 locks held by kworker/1:6/6647:
4 locks held by kworker/1:7/6674:
 #0: ffff0000d4131948 ((wq_completion)wg-kex-wg2#6){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a4c27be0 ((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: ffff0000d3509348 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x130/0x724 drivers/net/wireguard/noise.c:598
 #3: ffff0000dc8b6648 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x3f0/0x724 drivers/net/wireguard/noise.c:632
2 locks held by kworker/0:6/6675:
2 locks held by kworker/0:7/6676:
3 locks held by udevd/6685:
1 lock held by syz.0.18/6752:
 #0: ffff800092ae4168 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/u8:16/6746:
 #0: ffff0000d3bc8948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a4777be0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff800092ae4168 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by modprobe/6747:
2 locks held by kworker/u8:17/6748:
2 locks held by kworker/u8:18/6750:
3 locks held by kworker/0:8/6753:
 #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a46b7be0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff800092ae4168 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
5 locks held by kworker/u8:19/6754:
2 locks held by syz-executor/6755:
4 locks held by kworker/u8:20/6757:
2 locks held by kworker/u8:21/6759:

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