Re: Postgresql 7.3.3 crashing on query

Am Montag, 28. Juli 2003 15:53 schrieb Tom Lane:
> Philipp Reisner <philipp.reisner@linbit.com> writes:
> > If I execute this query several times (I receive the correct result set),
> > and then do an explain of the same query, the backend terminates with
> > sig 11 !!!
>
> Can you get us a debugger stack trace from the crash?
>

Ok, I attached GDB to the backend.
Attaching to program: /usr/lib/postgresql/bin/postgres, process 25380
Reading symbols from /lib/libpam.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libpam.so.0
Reading symbols from /usr/lib/libssl.so.0.9.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libssl.so.0.9.6
Reading symbols from /usr/lib/libcrypto.so.0.9.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libcrypto.so.0.9.6
Reading symbols from /usr/lib/libkrb5.so.17...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libkrb5.so.17
Reading symbols from /usr/lib/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/libreadline.so.4...(no debugging symbols
found)...done.
Loaded symbols for /lib/libreadline.so.4
Reading symbols from /lib/libcrypt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libresolv.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /lib/libnsl.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /usr/lib/libcom_err.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libcom_err.so.1
Reading symbols from /usr/lib/libasn1.so.5...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libasn1.so.5
Reading symbols from /usr/lib/libroken.so.9...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libroken.so.9
Reading symbols from /lib/libncurses.so.5...(no debugging symbols
found)...done.
Loaded symbols for /lib/libncurses.so.5
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/lib/libdb3.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdb3.so.3
Reading symbols from /lib/libnss_compat.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib/libnss_compat.so.2
0x402be812 in recv () from /lib/libc.so.6
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x0812f9bc in DecodeDateTime ()
(gdb) where
#0  0x0812f9bc in DecodeDateTime ()
Cannot access memory at address 0xbf003030

Looks a lot like a corrupted stack :(


> Also you should specify the platform you're using in reports of this sort.
>

Its a PIII 733MHz 256MB RAM, running Debian Linux 3.0 (Woody) an a 2.4.18
kernel.

BTW, it crashes are getting rarer on the system...

-Philipp
--
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