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[2005-01-01 15:11 UTC] drews at dynamicwebpages dot de
Description:
------------
updating php to 5.0.3 causes php to exit with a segmentation fault(11).
configuring with --enable-debug let it run, but throwing errors into the apache error_log (see below).
strange: php5.0.0RC3 still works without segfaults and runs happily.
=== config.nice ===
'./configure' \
'--prefix=/srv/php/5.0.3' \
'--with-apxs=/srv/apache/current/bin/apxs' \
'--with-mysql=/srv/mysql/current' \
'--with-imap' \
'--with-imap-ssl' \
'--with-curl' \
'--with-zlib' \
'--with-ftp' \
'--with-gd=/usr/local' \
'--with-png-dir=/usr' \
'--with-zlib-dir=/usr' \
'--with-freetype-dir=/usr' \
'--with-openssl=/srv/openssl/current' \
'--with-bz2' \
'--with-ldap' \
'--with-jpeg-dir=/usr' \
'--enable-versioning' \
'--enable-sockets' \
'--with-mcrypt' \
'--with-mhash' \
'--with-pear=/srv/pear' \
'--with-config-file-path=/etc' \
'--with-tidy' \
=== /config.nice ===
gdb.backtrace does not work out, because enableing debug with php does not lead to segfault but to memleaks.
Reproduce code:
---------------
if (file_exists($_SESSION['cfgfile'])) {
$CfgObj = simplexml_load_file($_SESSION['cfgfile']);
} else {
die();
}
(not sure, if this causes the segfault, but it is the only
line of code, that makes use of simplexml and could lead to the memleak).
Expected result:
----------------
anything than a segfault ;)
Actual result:
--------------
/usr/local/src/lamp/php-5.0.3/ext/simplexml/simplexml.c(970) : Freeing 0x083EBE14 (2 bytes), script=/var/www/htdocs/DOMAIN/index.php
/usr/local/src/lamp/php-5.0.3/ext/simplexml/simplexml.c(1049) : Freeing 0x083EB33C (16 bytes), script=/var/www/htdocs/DOMAIN/index.php
=== Total 2 memory leaks detected ===
PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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this might help further: compiled without "--enable-debug" it throws the segfault(11) and i have a gdb-bt for it: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 16384 (LWP 30198)] 0x40117211 in free () from /lib/i686/libc.so.6 (gdb) bt #0 0x40117211 in free () from /lib/i686/libc.so.6 #1 0x4068e3ba in _efree (ptr=0xbffefd20) at /usr/local/src/lamp/php-5.0.3/Zend/zend_alloc.c:287 #2 0x4069fc1e in compare_function (result=0xbfffabf0, op1=0xbffefd20, op2=0x8289964) at /usr/local/src/lamp/php-5.0.3/Zend/zend_operators.c:1279 #3 0x406a0483 in is_equal_function (result=0xbfffabf0, op1=0x837582c, op2=0x8289964) at /usr/local/src/lamp/php-5.0.3/Zend/zend_operators.c:1476 #4 0x406c77ec in zend_is_equal_handler (execute_data=0xbfffaf90, opline=0x8289934, op_array=0x821ec9c) at /usr/local/src/lamp/php-5.0.3/Zend/zend_execute.c:90 #5 0x406c4cec in execute (op_array=0x821ec9c) at /usr/local/src/lamp/php-5.0.3/Zend/zend_execute.c:1400 #6 0x406a3479 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/local/src/lamp/php-5.0.3/Zend/zend.c:1069 #7 0x4066b33f in php_execute_script (primary_file=0xbfffd2e0) at /usr/local/src/lamp/php-5.0.3/main/main.c:1628 #8 0x406d85a4 in apache_php_module_main (r=0x81d81cc, display_source_mode=0) at /usr/local/src/lamp/php-5.0.3/sapi/apache/sapi_apache.c:54 #9 0x406d907c in send_php (r=0x81d81cc, display_source_mode=0, filename=0x0) at /usr/local/src/lamp/php-5.0.3/sapi/apache/mod_php5.c:622 #10 0x406d9243 in send_parsed_php (r=0x81d81cc) at /usr/local/src/lamp/php-5.0.3/sapi/apache/mod_php5.c:637 #11 0x080549ff in ap_invoke_handler () #12 0x08069f5d in process_request_internal () #13 0x08069fbc in ap_process_request () #14 0x08060f1a in child_main () #15 0x080610e8 in make_child () #16 0x0806124e in startup_children () #17 0x0806190e in standalone_main () #18 0x08062146 in main ()i have a short example code which segfaults too : <?php $data = simplexml_load_file('toto.xml'); $xml= $data->standings; $live= ($xml['live']==1); ?> toto.xml contains this : <data> <standings live="1"/> </data> I've 3 differents php 5.0.3 binaries, one segfaults, the other ones don't. The only differences are modules like ssl support. It works if i change the last line like this : live= ((string)$xml['live']==1); Seams to be a schroedingbug since a print just before corrects the problem too !Hello, I get this error too, but only in combination with an PEAR::SOAP_Server. If I load the same XML-File in a non-SOAP Script an let it parse, everything works fine. I have a Fedora Core 5 with Apache: $ httpd -V Server version: Apache/2.2.2 Server built: Jul 26 2006 11:12:08 Server's Module Magic Number: 20051115:2 Server loaded: APR 1.2.2, APR-Util 1.2.7 Compiled using: APR 1.2.2, APR-Util 1.2.7 Architecture: 32-bit Server MPM: Prefork threaded: no forked: yes (variable process count) and PHP: $ php --version PHP 5.1.6 (cli) (built: Nov 3 2006 07:27:53) My XML Data is a fetched string from googlemaps xml output. Here is a short code snippet: ==== code ==== $result = $google->get($url); $xml_string = $google->currentResponse(); $body = $xml_string['body']; fprintf($fp, "will load xml now\n\n%s\n\n", $body); $xml = simplexml_load_string($body); fprintf($fp, "loaded: %s", $xml->name); if(!$xml) { fprintf($fp, "error on simplexml\n"); } else { $response = $xml->Response; fprintf($fp, "%d", count($response->Placemark) ); === /code ==== fprintf($fp, "loaded: %s"... will not be reached, the last line in log is "will load xml now" and the xml data.