INFO: task kworker/1:4:647 blocked for more than 123 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:647   tgid:647   ppid:2      flags:0x00004000