Re: Failure on markhor with CLOBBER_CACHE_ALWAYS for test brin

On 2014-12-31 10:02:40 -0300, Alvaro Herrera wrote:
> Alvaro Herrera wrote:
> > Michael Paquier wrote:
> > > HI all.
> > >
> > > markhor has run for the first time in 8 days, and there is something
> > > in range e703261..72dd233 making the regression test of brin crashing.
> > > See here:
> > > http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=markhor&dt=2014-12-30%2020%3A58%3A49
> >
> > This shows that the crash was in the object_address test, not brin.
> > Will research.
>
> I can reproduce the crash in a CLOBBER_CACHE_ALWAYS build in
> the object_address test. The backtrace is pretty strange:

Hard to say without more detail, but my guess is that the argument to
get_collation_oid() isn't actually valid. For one, that'd explain the
error, for another, the pointer's value (name=name(at)entry=0x11655c0) is
suspiciously low.

> #8 0x0000000000504699 in get_collation_oid (name=name(at)entry=0x11655c0,
> missing_ok=missing_ok(at)entry=0 '\000')
> at /pgsql/source/master/src/backend/catalog/namespace.c:3323
> #9 0x000000000050d8dc in get_object_address (objtype=objtype(at)entry=OBJECT_COLLATION,
> objname=objname(at)entry=0x11655c0, objargs=objargs(at)entry=0x0,
> relp=relp(at)entry=0x7fff24432c28, lockmode=lockmode(at)entry=1,
> missing_ok=missing_ok(at)entry=0 '\000')
> at /pgsql/source/master/src/backend/catalog/objectaddress.c:704

Greetings,

Andres Freund

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