From: Tim Jackson <tim.jackson@ints.com>
To: Michael Fuhr <mike@fuhr.org>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: C set return function differences on 8.0?
Date: Mon, 11 Jul 2005 16:09:28 -0700
Message-ID: <42D2FC28.8070908@ints.com> (raw)
In-Reply-To: <20050709015800.GA11641@winnie.fuhr.org>
References: <42CDCFB4.2030908@ints.com>
<20050708152339.GA81341@winnie.fuhr.org>
<42CF168A.4080007@ints.com>
<20050709015800.GA11641@winnie.fuhr.org>
Michael Fuhr wrote:
>
>Let's see if attaching a debugger to the backend or adding some
>ereport() calls can at least tell us where the crash is happening.
>Then maybe we can figure out why.
>
>
I was able to set gdb to the pid of psql session and saw that selects
on the "bad" views segfaulted on pfree()
The documentation for SRF had a comment that said pfree() was not really
necessary so I commented that code out and now I can select all the
views. :)
Perhaps you can advise me on why pfree() would segfault on 8.0 in but
not 7.4
Anyway the .so generated views are working now as they were on 7.4.
Thanks for your help. Tim
Not sure what all this means but the following lines were gleaned from
the core dump
cannot allocate memory for thread-local data: ABORT
result == _rtld_local._dl_tls_max_dtv_idx + 1
result <= _rtld_local._dl_tls_max_dtv_idx + 1
@cnt < _rtld_local._dl_tls_dtv_slotinfo_list->len
_rtld_local._dl_tls_dtv_slotinfo_list->next == ((void *)0)
_rtld_local._dl_tls_dtv_slotinfo_list != ((void *)0)
_rtld_local._dl_tls_max_dtv_idx == 0
_rtld_local._dl_tls_dtv_slotinfo_list == ((void *)0)
(size_t) map->l_tls_offset >= map->l_tls_blocksize
map->l_tls_blocksize >= map->l_tls_initimage_size
../sysdeps/unix/sysv/linux/dl-origin.c
FATAL: cannot determine library version
../sysdeps/generic/dl-sysdep.c
Inconsistency detected by ld.so: %s: %u: %s%sAssertion `%s' failed!
Inconsistency detected by ld.so: %s: %u: %s%sUnexpected error: %s.
And Here is what gdb says about the core
Core was generated by `postgres: postgres lubesoft_tj [local]
SELECT '.
Program terminated with signal 11, Segmentation fault.
#0 0x08222a86 in ?? ()
(no debugging symbols found)...Using host libthread_db library
"/lib/tls/libthread_db.so.1".
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To: pgsql-interfaces@postgresql.org
Cc: tim.jackson@ints.com, mike@fuhr.org
Subject: Re: C set return function differences on 8.0?
In-Reply-To: <42D2FC28.8070908@ints.com>
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