POLLHUP detected on devd socket, terminates sshd and some other services

Hi,

Not seen this before. Seems when devd goes away it takes away all the 
listening daemons too, like sshd and exim, with sig15

How can I stop this from happening/what is causing it?
Would overheating cause it? I'd expect to hear it beep if
tjmax was being reached.

The system is stable/13-n248829-7b7f391db4f amd64 1300523 1300523

Jan  5 06:28:12 redacted zfsd[3015]: POLLHUP detected on devd socket.
Jan  5 06:28:12 redacted zfsd[3015]: Disconnecting from devd.
Jan  5 06:28:12 redacted zfsd[3015]: ConnectToDevd: Connecting to devd.
Jan  5 06:28:12 redacted zfsd[3015]: Unable to connect to devd
Jan  5 06:28:12 redacted zfsd[3015]: Disconnecting from devd.
Jan  5 06:28:12 redacted smartd[3694]: smartd received signal 15: Terminated
Jan  5 06:28:12 redacted kernel: pflog0: promiscuous mode disabled
Jan  5 06:28:12 redacted smartd[3694]: smartd is exiting (exit status 0)
Jan  5 06:28:12 redacted sshd[3339]: Received signal 15; terminating.
Jan  5 06:28:12 redacted sshguard[3380]: Exiting on signal.
Jan  5 06:28:12 redacted syslogd: exiting on signal 15
root@redacted:/var/log# service devd restart
devd not running?
Starting devd.

thanks,
-- 
J.