Postgres 8.4.20 seqfault on RHEL 6.4

From: Dave Johansen <davejohansen(at)gmail(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: Postgres 8.4.20 seqfault on RHEL 6.4
Date: 2015-02-12 23:25:09
Message-ID: CAAcYxUeduPhKXbDQ6ZTOhKGE+1A3cMrTQujSExC-tv4ac4ksUw@mail.gmail.com
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I'm running Postgres 8.4.20 on RHEL 6.4 and it will occasionally crash. The
postgres.log file just says that a PID was terminated. The output from
dmesg has a message like this one:
postmaster[22905]: segfault at 686 ip 0000000000000686 sp 00007fff83d72e88
error 14 in postgres[400000+463000]

What can I do to try and figure out what is causing the crash and fix it?

Thanks,
Dave

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