INFO: task kworker/u8:4:63 blocked for more than 144 seconds.
      Not tainted 6.15.0-rc2-syzkaller-00292-g4fe09ff1a54a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4    state:D stack:20360 pid:63    tgid:63    ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b88/0x5240 kernel/sched/core.c:6767