Re: dblink crash on PPC

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: "Andrew Dunstan" <andrew(at)dunslane(dot)net>, "Robert Haas" <robertmhaas(at)gmail(dot)com>
Cc: "Mark Wong" <markwkm(at)gmail(dot)com>, "PostgreSQL-development" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: dblink crash on PPC
Date: 2011-05-27 15:19:18
Message-ID: 4DDF7AA6020000250003DDDB@gw.wicourts.gov
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Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>>
>> Something odd is happening on buildfarm member wombat, a PPC970MP
>> box running Gentoo. We're getting dblink test failures. On the
>> one I << looked at more closely I saw this:
>>
>> [4ddf2c59.7aec:153] LOG: disconnection: session time:
>> 0:00:00.444
>> user=markwkm database=contrib_regression host=[local]
>>
>> and then:
>>
>> [4ddf2c4e.79d4:2] LOG: server process (PID 31468) was terminated
>> by signal 11: Segmentation fault
>> [4ddf2c4e.79d4:3] LOG: terminating any other active server
>> processes
>>
>> which makes it look like something is failing badly in the
>> backend cleanup code. (7aec = hex(31468))
>>
>> We don't seem to have a backtrace, which is sad.
>>
>> This seems to be happening on the 9.0 branch too.
>>
>> I wonder what it could be?
>
> Around when did it start failing?

According to the buildfarm logs the first failure was roughly 1 day
10 hours 40 minutes before this post.

Keep in mind that PPC is a platform with weak memory ordering....

-Kevin

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