Edit report at http://bugs.php.net/bug.php?id=52554&edit=1
ID: 52554
User updated by: cameron dot moller at gmail dot com
Reported by: cameron dot moller at gmail dot com
Summary: Sporadic PHP Segmentation fault in combination with
unixODBC
Status: Open
Type: Bug
Package: ODBC related
Operating System: 2.6.34-gentoo-r1 x86_64
PHP Version: 5.3SVN-2010-08-06 (SVN)
Block user comment: N
New Comment:
Re-emergeing glibc did not help
Previous Comments:
------------------------------------------------------------------------
[2010-08-06 12:27:31] cameron dot moller at gmail dot com
Description:
------------
Gentoo Linux x86_64
Kernel 2.6.34-gentoo-r1
unixODBC-2.3.0
freeTDS 0.64
PHP 5.3.2 (from Gentoo portage (~ = experimental))
(problem started on PHP 5.2.13 - I upgraded to ~5.3.2)
Apache 2.2.15
gcc 4.4.3-r2
glibc 2.11.2
MSSQL 2005 (remote server)
I have multiple pages that query the database successfully. However, 2
queries always result in a segmentation fault. I ran the page through
gdb and generated a backtrace. Shown below.
The suspect sql is simply "select distinct asgn_group from
csc_report_active order by asgn_group asc"
FYI - sql via isql gives me 773 rows - no problems.
php.ini is vanilla - no changes - but dated Jul 30 - about when the
problem started. Though I do not remember ever making any changes to
php.ini
httpd.conf also vanilla as is /etc/conf.d/apache2
[I] dev-lang/php
Available versions: (5) 5.2.13 ~5.2.14 (~)5.3.2 ~5.3.3
{adabas apache2 bcmath berkdb birdstep bzip2 calendar cdb cgi
cjk (+)cli concurrentmodphp crypt (+)ctype curl curlwrappers db2 dbase
dbmaker debug discard-path doc embed empress empress-bcs enchant esoob
exif fastbuild fdftk +fileinfo (+)filter firebird flatfile
force-cgi-redirect fpm frontbase ftp gd gd-external gdbm gmp (+)hash
(+)iconv imap inifile interbase intl iodbc ipv6 java-external (+)json
kerberos kolab ldap ldap-sasl libedit mcve mhash msql mssql mysql mysqli
mysqlnd ncurses nls oci8 oci8-instant-client odbc pcntl (+)pcre pdo
+phar pic (+)posix postgres qdbm readline recode reflection sapdb
(+)session sharedext sharedmem (+)simplexml snmp soap sockets solid
spell spl sqlite sqlite3 ssl suhosin sybase sybase-ct sysvipc threads
tidy (+)tokenizer truetype unicode wddx xml xmlreader xmlrpc xmlwriter
xpm xsl yaz zip zlib}
Installed versions: 5.3.2(5)(08:26:30 07/30/10)(apache2 berkdb
bzip2 cli crypt ctype fileinfo filter gd gdbm hash iconv imap json
kerberos ldap mssql mysql nls odbc phar posix postgres readline session
simplexml ssl tokenizer truetype unicode xml zlib -adabas -bcmath
-birdstep -calendar -cdb -cgi -cjk -concurrentmodphp -curl -curlwrappers
-db2 -dbmaker -debug -doc -embed -empress -empress-bcs -enchant -esoob
-exif -firebird -flatfile -frontbase -ftp -gd-external -gmp -inifile
-interbase -intl -iodbc -ipv6 -kolab -ldap-sasl -libedit -mysqli
-mysqlnd -oci8 -oci8-instant-client -pcntl -pdo -pic -qdbm -recode
-sapdb -sharedext -sharedmem -snmp -soap -sockets -solid -spell -sqlite
-sqlite3 -suhosin -sybase-ct -sysvipc -threads -tidy -wddx -xmlreader
-xmlrpc -xmlwriter -xpm -xsl -zip)
gdb /usr/bin/php
warning: Can not parse XML syscalls information; XML support was
disabled at compile time.
GNU gdb (Gentoo 7.0.1 p1) 7.0.1
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/php...(no debugging symbols
found)...done.
(gdb) r ccc_assign_groups_activity.php
Starting program: /usr/bin/php ccc_assign_groups_activity.php
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff26cd15a in memcpy () from /lib/libc.so.6
(gdb) bt
#0 0x00007ffff26cd15a in memcpy () from /lib/libc.so.6
#1 0x0000000000644412 in _estrndup ()
#2 0x00000000005474c8 in zif_odbc_result ()
#3 0x00000000006828ff in ?? ()
#4 0x000000000067d747 in execute ()
#5 0x000000000065bf7f in zend_execute_scripts ()
#6 0x000000000061205d in php_execute_script ()
#7 0x00000000006d569c in main ()
(gdb)
I am re-emergeing glibc just to see what happens.
Actual result:
--------------
gdb /usr/bin/php
warning: Can not parse XML syscalls information; XML support was
disabled at compile time.
GNU gdb (Gentoo 7.0.1 p1) 7.0.1
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/php...(no debugging symbols
found)...done.
(gdb) r ccc_assign_groups_activity.php
Starting program: /usr/bin/php ccc_assign_groups_activity.php
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff26cd15a in memcpy () from /lib/libc.so.6
(gdb) bt
#0 0x00007ffff26cd15a in memcpy () from /lib/libc.so.6
#1 0x0000000000644412 in _estrndup ()
#2 0x00000000005474c8 in zif_odbc_result ()
#3 0x00000000006828ff in ?? ()
#4 0x000000000067d747 in execute ()
#5 0x000000000065bf7f in zend_execute_scripts ()
#6 0x000000000061205d in php_execute_script ()
#7 0x00000000006d569c in main ()
(gdb)
I am re-emergeing glibc just to see what happens.
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Edit this bug report at http://bugs.php.net/bug.php?id=52554&edit=1
