Re: pq_recvbuf: unexpected EOF

--- Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Alvaro Herrera <alvherre@dcc.uchile.cl> writes:
> > On Fri, Apr 25, 2003 at 02:32:20PM -0700, David Link wrote:
> >> Running with ulimit ...
> >>
> >> echo "setting max user processes to unlimited..."
> >> ulimit -u unlimited
> >> echo -n "$PSQL_START"
> >> su -l postgres -s /bin/sh -c "$PGLIB/bin/pg_ctl -D $PGDATA -p
> >> $PGLIB/bin/postmaster -o '-i' start > $PGDATA/log/syslog 2>&1" <
> >> /dev/null
> >>
> >> but still no core.  I can't product that bt.  Any suggestions?
>
> > Try ulimit -c...
>

Thank you for helping me produce a core dump file. (ulimit -c worked)
Still trying to produce the backtrace ...

   gdb /path/to/postgres-executable /path/to/core-file

not working so well.  ...

[root@cairo root]# gdb /usr/local/pgsql/bin/postgres
$PGDATA/base/75479566/core
GNU gdb Red Hat Linux 7.x (5.0rh-15) (MI_OUT)
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and
you are
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i386-redhat-linux"...

warning: core file may not match specified executable file.
Core was generated by `postgres: video puma 127.0.0.1 SELE'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libreadline.so.4...done.
Loaded symbols for /usr/lib/libreadline.so.4
Reading symbols from /lib/libtermcap.so.2...done.
Loaded symbols for /lib/libtermcap.so.2
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libresolv.so.2...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/i686/libm.so.6...done.
Loaded symbols for /lib/i686/libm.so.6
Reading symbols from /lib/i686/libc.so.6...done.
Loaded symbols for /lib/i686/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
#0  0x0810e9a3 in ReleaseAndReadBuffer () at eval.c:41
41      eval.c: No such file or directory.
        in eval.c
(gdb) bt
#0  0x0810e9a3 in ReleaseAndReadBuffer () at eval.c:41
Cannot access memory at address 0xafffec38
(gdb)


sorry i don't know gdb that well.


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