freebsd stable - Mar 2016 - 10.3-RC3 kill -TERM weirdness after upgrade

I've just upgraded two local servers from 10.3-RC2 to 10.3-RC3.  One is
i386 (Pentium 4) with 1.5GB memory; the other is amd64 (Xeon E5 x 2)
with 16GB.  Something seems to be swallowing SIGTERM sometimes.  I've
never seen this before.

rc scripts and service(8) hang when trying to stop some services.  If I
break out of the script or service command (via ctrl-C) and invoke
kill(1), passing the relevant PID, the shell prompt returns immediately
but the process doesn't terminate.  Sending SIGKILL to the process via
kill(1) does its job.

I am seeing this with:
  squid        (on both servers)
  ircd-ratbox  (on both servers)
  git_daemon

I am not seeing this (all seems normal) with:
  cupsd
  sendmail     (on both servers)

Is anybody else seeing this, or have I been bitten by some other
coincidence?

-- 
John Marshall

On Sat, 19 Mar 2016, 12:46 +1100, John Marshall wrote:
> rc scripts and service(8) hang when trying to stop some services.  If I
> break out of the script or service command (via ctrl-C) and invoke
> kill(1), passing the relevant PID, the shell prompt returns immediately
> but the process doesn't terminate.  Sending SIGKILL to the process via
> kill(1) does its job.
> Is anybody else seeing this, or have I been bitten by some other
> coincidence?
I've filed a PR (Bug 208132) just in case I'm not delirious.

After looking through the commit logs, I've backed out r296976 in the
working copy on the i386 system to see if that might be related. Build
won't be finished for several hours.

-- 
John Marshall
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