Re: Strange hanging bug in a simple milter

On 2013-09-13 13:15:34 -0400, Stephen Frost wrote:
> Andres,
> 
> On Friday, September 13, 2013, Andres Freund wrote:
> >
> > It'd be interesting to replace the origin callbacks with one immediately
> > doing an abort() or similar to see whether they maybe are called after
> > they shouldn't be and from where.
> >
> 
> Good thought. Got sucked into a meeting but once I'm out I'll try having
> the lock/unlock routines abort if they're called while ssl_open_connections
> is zero, which should not be happening, but seems like it is.

Hm. close_SSL() first does pqsecure_destroy() which will unset the
callbacks, and the count and then goes on to do X509_free() and
ENGINE_finish(), ENGINE_free() if either is used.

It's not implausible that one of those actually needs locking. I doubt
engines play a role here, but, without having looked at the testcase,
X509_free() might be a possibility.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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