Title: #107: WATCHDOG: Avoid non async-signal-safe from the signal_handler
Hmm. I really didn't notice it before but you're right.
It ends up killing all explicitly started responders on my setup. Sorry for not having it
tested properly before submitting this version.
I'll replace it by _exit(1) as it was before and resubmit the patch.
See the full comment at https://github.com/SSSD/sssd/pull/107#issuecomment-270624750