Horton

Re: check failure with -DRELCACHE_FORCE_RELEASE -DCLOBBER_FREED_MEMORY

Andrew Dunstan <andrew.dunstan@2ndquadrant.com>

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From: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
To: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2017-03-04T14:20:23Z
Lists: pgsql-hackers 

On 03/03/2017 02:24 PM, Andrew Dunstan wrote:
> I have been setting up a buildfarm member with -DRELCACHE_FORCE_RELEASE
> -DCLOBBER_FREED_MEMORY, settings which Alvaro suggested to me.I got core
> dumps with these stack traces. The platform is Amazon Linux.
>


I have replicated this on a couple of other platforms (Fedora, FreeBSD)
and back to 9.5. The same failure doesn't happen with buildfarm runs on
earlier branches, although possibly they don't have the same set of tests.

cheers

andrew

-- 
Andrew Dunstan                https://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. Avoid dangling pointer to relation name in RLS code path in DoCopy().

  2. In rebuild_relation(), don't access an already-closed relcache entry.