Re: LOG: munmap(0x7fff80000000) failed: Invalid argument - Mailing list pgsql-general

From Andres Freund
Subject Re: LOG: munmap(0x7fff80000000) failed: Invalid argument
Date
Msg-id 20161011003209.mtqxye5fqt6f6lmg@alap3.anarazel.de
Whole thread Raw
In response to Re: LOG: munmap(0x7fff80000000) failed: Invalid argument  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: LOG: munmap(0x7fff80000000) failed: Invalid argument  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
On 2016-10-10 18:21:48 -0400, Tom Lane wrote:
> Chris Richards <chris@infinite.io> writes:
> > Setting up postgresql-9.5 (9.5.4-1.pgdg14.04+2) ...
> > Creating new cluster 9.5/main ...
> >   config /etc/postgresql/9.5/main
> >   data   /var/lib/postgresql/9.5/main
> >   locale en_US.UTF-8
> > LOG:  munmap(0x7fff80000000) failed: Invalid argument
> > [... snip 14 or so repeats ...]
> > LOG:  munmap(0x7fff80000000) failed: Invalid argument
> >   socket /var/run/postgresql
> >   port   5433
> > update-alternatives: using
> > /usr/share/postgresql/9.5/man/man1/postmaster.1.gz to provide
> > /usr/share/man/man1/postmaster.1.gz (postmaster.1.gz) in auto mode
> >  * Starting PostgreSQL 9.5 database server
> >       [ OK ]
> > Processing triggers for libc-bin (2.19-0ubuntu6.6) ...
>
> > I'm able to connect and I dumped a few default relations.
>
> > Is the munmap error of concern? It remains upon rebooting / restarting the
> > server.
>
> Seems pretty fishy to me; I don't know what would be causing it.
>
> [ digs in code... ]  One theory is that PGSharedMemoryDetach is getting
> called more than once, but I'm not sure how that would happen.  Can you
> characterize where this happens more precisely?  What nondefault settings
> have you got in postgresql.conf?

Hm. Could that be from the DSM code?

- Andres


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