From: stojmir at on dot net dot mk
Operating system: Linux 2.6.9
PHP version: 5.2.1
PHP Bug Type: Reproducible crash
Bug description: zend_mm_heap corruption
Description:
------------
My apache crashes on random intervals (usually 10 hours):
zend_mm_heap corrupted
zend_mm_heap corrupted
zend_mm_heap corrupted
[Tue Feb 13 17:28:01 2007] [notice] child pid 14881 exit signal
Segmentation fault (11), possible coredump in /var/apache-dump
Im guessing its related with the zend memory menager, but who nows, im not
really into it so i cant be sure.
PHP version 5.2.1, Apache 2.0.55, RedHat Enterprise Linux with
2.6.9-42.0.8.ELsmp on a x86_64 machine with dual core Xeon.
The site is hosting a Drupal installation with about 3000 users at a
time.
Reproduce code:
---------------
Im not sure what code produces the crash.
Actual result:
--------------
PHP is configured with:
'./configure' '--build=x86_64-redhat-linux' '--host=x86_64-redhat-linux'
'--target=x86_64-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr'
'--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin'
'--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include'
'--libdir=/usr/lib64' '--libexecdir=/usr/libexec' '--localstatedir=/var'
'--sharedstatedir=/usr/com' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--cache-file=../config.cache'
'--with-libdir=lib64' '--with-config-file-path=/etc'
'--with-config-file-scan-dir=/etc/php.d' '--with-imap-ssl' '--enable-ftp'
'--with-gd' '--enable-gd-native-ttf' '--with-jpeg-dir=/usr'
'--with-png-dir=/usr' '--with-freetype-dir=/usr' '--with-gmp'
'--with-mysql=shared,/usr/lib64' '--with-xml' '--enable-trans-sid'
'--enable-shmop' '--enable-sockets' '--with-regex=php' '--enable-sysvsem'
'--enable-sysvshm' '--enable-sysvmsg' '--enable-memory-limit'
'--with-tsrm-pthreads' '--enable-shared' '--disable-debug' '--with-zlib'
'--with-gettext' '--with-xsl' '--with-iconv'
'--enable-inline-optimization' '--disable-static' '--with-curl'
'--enable-exif' '--enable-magic-quotes' '--with-inifile' '--with-flatfile'
'--enable-dio' '--with-mbstring' '--with-mime-magic=/etc/httpd/mime.magic'
'--enable-soap' '--enable-wddx' '--with-pear' '--enable-pic'
'--disable-rpath' '--enable-track-vars' '--enable-mcal'
'--enable-mbstring' '--enable-mbstr-enc-trans' '--enable-mbregex'
'--enable-memory-limit' '--enable-zend-multibyte' '--with-mysqli=shared'
'--enable-force-cgi-redirect' '--enable-fastcgi' '--enable-pcntl'
'--enable-sigchild' '--with-apxs2=/usr/sbin/apxs' '--with-bz2'
'--with-sqllite=shared' '--enable-sqlite-utf8'
Here is a gdb backtrace of the thrown core dump from apache:
GNU gdb Red Hat Linux (6.3.0.0-1.132.EL4rh)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "x86_64-redhat-linux-gnu"...(no debugging
symbols found)
Using host libthread_db library "/lib64/tls/libthread_db.so.1".
Core was generated by `/usr/sbin/httpd'.
Program terminated with signal 11, Segmentation fault.
(no debugging symbols found)
Loaded symbols for /usr/sbin/httpd
Reading symbols from /lib64/libpcre.so.0...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libpcre.so.0
Reading symbols from /usr/lib64/libpcreposix.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libpcreposix.so.0
Reading symbols from /usr/lib64/libaprutil-0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libaprutil-0.so.0
Reading symbols from /usr/lib64/libldap-2.2.so.7...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libldap-2.2.so.7
Reading symbols from /usr/lib64/liblber-2.2.so.7...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/liblber-2.2.so.7
Reading symbols from /lib64/tls/libdb-4.2.so...(no debugging symbols
found)...done.
Loaded symbols for /lib64/tls/libdb-4.2.so
Reading symbols from /usr/lib64/libexpat.so.0...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libexpat.so.0
Reading symbols from /usr/lib64/libapr-0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libapr-0.so.0
Reading symbols from /lib64/tls/librt.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib64/tls/librt.so.1
Reading symbols from /lib64/tls/libm.so.6...
(no debugging symbols found)...done.
Loaded symbols for /lib64/tls/libm.so.6
Reading symbols from /lib64/libcrypt.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libcrypt.so.1
Reading symbols from /lib64/tls/libpthread.so.0...(no debugging symbols
found)...done.
Loaded symbols for /lib64/tls/libpthread.so.0
Reading symbols from /lib64/libdl.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /lib64/tls/libc.so.6...(no debugging symbols
found)...done.
Loaded symbols for /lib64/tls/libc.so.6
Reading symbols from /lib64/libresolv.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libresolv.so.2
Reading symbols from /usr/lib64/libsasl2.so.2...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libsasl2.so.2
Reading symbols from /lib64/libssl.so.4...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libssl.so.4
Reading symbols from /lib64/libcrypto.so.4...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libcrypto.so.4
Reading symbols from /lib64/ld-linux-x86-64.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib64/libgssapi_krb5.so.2...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib64/libgssapi_krb5.so.2
Reading symbols from /usr/lib64/libkrb5.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libkrb5.so.3
Reading symbols from /lib64/libcom_err.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib64/libcom_err.so.2
Reading symbols from /usr/lib64/libk5crypto.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libk5crypto.so.3
Reading symbols from /usr/lib64/libz.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib64/libz.so.1
Reading symbols from /lib64/libnss_files.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib64/libnss_files.so.2
Reading symbols from /usr/lib64/httpd/modules/mod_access.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_access.so
Reading symbols from /usr/lib64/httpd/modules/mod_auth.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_auth.so
Reading symbols from /usr/lib64/httpd/modules/mod_auth_anon.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_auth_anon.so
Reading symbols from /usr/lib64/httpd/modules/mod_auth_dbm.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_auth_dbm.so
Reading symbols from /usr/lib64/httpd/modules/mod_auth_digest.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_auth_digest.so
Reading symbols from /usr/lib64/httpd/modules/mod_ext_filter.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_ext_filter.so
Reading symbols from /usr/lib64/httpd/modules/mod_include.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_include.so
Reading symbols from /usr/lib64/httpd/modules/mod_deflate.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_deflate.so
Reading symbols from /usr/lib64/httpd/modules/mod_log_config.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_log_config.so
Reading symbols from /usr/lib64/httpd/modules/mod_log_forensic.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_log_forensic.so
Reading symbols from /usr/lib64/httpd/modules/mod_env.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_env.so
Reading symbols from /usr/lib64/httpd/modules/mod_mime_magic.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_mime_magic.so
Reading symbols from /usr/lib64/httpd/modules/mod_cern_meta.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_cern_meta.so
Reading symbols from /usr/lib64/httpd/modules/mod_expires.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_expires.so
Reading symbols from /usr/lib64/httpd/modules/mod_headers.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_headers.so
Reading symbols from /usr/lib64/httpd/modules/mod_usertrack.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_usertrack.so
Reading symbols from /usr/lib64/httpd/modules/mod_unique_id.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_unique_id.so
Reading symbols from /usr/lib64/httpd/modules/mod_setenvif.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_setenvif.so
Reading symbols from /usr/lib64/httpd/modules/mod_proxy.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_proxy.so
Reading symbols from /usr/lib64/httpd/modules/mod_proxy_connect.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_proxy_connect.so
Reading symbols from /usr/lib64/httpd/modules/mod_proxy_ftp.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_proxy_ftp.so
Reading symbols from /usr/lib64/httpd/modules/mod_proxy_http.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_proxy_http.so
Reading symbols from /usr/lib64/httpd/modules/mod_mime.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_mime.so
Reading symbols from /usr/lib64/httpd/modules/mod_dav.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_dav.so
Reading symbols from /usr/lib64/httpd/modules/mod_status.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_status.so
Reading symbols from /usr/lib64/httpd/modules/mod_autoindex.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_autoindex.so
Reading symbols from /usr/lib64/httpd/modules/mod_asis.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_asis.so
Reading symbols from /usr/lib64/httpd/modules/mod_info.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_info.so
Reading symbols from /usr/lib64/httpd/modules/mod_cgi.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_cgi.so
Reading symbols from /usr/lib64/httpd/modules/mod_dav_fs.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_dav_fs.so
Reading symbols from /usr/lib64/httpd/modules/mod_vhost_alias.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_vhost_alias.so
Reading symbols from /usr/lib64/httpd/modules/mod_negotiation.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_negotiation.so
Reading symbols from /usr/lib64/httpd/modules/mod_dir.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_dir.so
Reading symbols from /usr/lib64/httpd/modules/mod_actions.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_actions.so
Reading symbols from /usr/lib64/httpd/modules/mod_speling.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_speling.so
Reading symbols from /usr/lib64/httpd/modules/mod_alias.so...
(no debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_alias.so
Reading symbols from /usr/lib64/httpd/modules/mod_rewrite.so...(no
debugging symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_rewrite.so
Reading symbols from /usr/lib64/httpd/modules/mod_perl.so...(no debugging
symbols found)...done.
Loaded symbols for /etc/httpd/modules/mod_perl.so
Reading symbols from
/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so...
(no debugging symbols found)...done.
Loaded symbols for
/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE/libperl.so
Reading symbols from /lib64/libnsl.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libnsl.so.1
Reading symbols from /lib64/libutil.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib64/libutil.so.1
Reading symbols from /usr/lib64/httpd/modules/libphp5.so...done.
Loaded symbols for /etc/httpd/modules/libphp5.so
Reading symbols from /usr/lib64/libexslt.so.0...done.
Loaded symbols for /usr/lib64/libexslt.so.0
Reading symbols from /usr/lib64/libgmp.so.3...done.
Loaded symbols for /usr/lib64/libgmp.so.3
Reading symbols from /usr/lib64/libfreetype.so.6...done.
Loaded symbols for /usr/lib64/libfreetype.so.6
Reading symbols from /usr/lib64/libpng12.so.0...done.
Loaded symbols for /usr/lib64/libpng12.so.0
Reading symbols from /usr/lib64/libjpeg.so.62...done.
Loaded symbols for /usr/lib64/libjpeg.so.62
Reading symbols from /usr/lib64/libcurl.so.3...done.
Loaded symbols for /usr/lib64/libcurl.so.3
Reading symbols from /usr/lib64/libbz2.so.1...done.
Loaded symbols for /usr/lib64/libbz2.so.1
Reading symbols from /usr/lib64/libidn.so.11...done.
Loaded symbols for /usr/lib64/libidn.so.11
Reading symbols from /usr/lib64/libxslt.so.1...done.
Loaded symbols for /usr/lib64/libxslt.so.1
Reading symbols from /usr/lib64/libxml2.so.2...done.
Loaded symbols for /usr/lib64/libxml2.so.2
Reading symbols from /usr/lib64/libgcrypt.so.11...done.
Loaded symbols for /usr/lib64/libgcrypt.so.11
Reading symbols from /usr/lib64/libgpg-error.so.0...done.
Loaded symbols for /usr/lib64/libgpg-error.so.0
Reading symbols from /usr/lib64/httpd/modules/mod_python.so...done.
Loaded symbols for /etc/httpd/modules/mod_python.so
Reading symbols from /usr/lib64/httpd/modules/mod_ssl.so...done.
Loaded symbols for /etc/httpd/modules/mod_ssl.so
Reading symbols from /usr/lib64/libdistcache.so.1...done.
Loaded symbols for /usr/lib64/libdistcache.so.1
Reading symbols from /usr/lib64/libnal.so.1...done.
Loaded symbols for /usr/lib64/libnal.so.1
Reading symbols from /usr/lib64/php/modules/mysql.so...done.
Loaded symbols for /usr/lib64/php/modules/mysql.so
Reading symbols from /usr/lib64/mysql/libmysqlclient.so.15...done.
Loaded symbols for /usr/lib64/mysql/libmysqlclient.so.15
Reading symbols from /usr/lib64/php/modules/eaccelerator.so...done.
Loaded symbols for /usr/lib64/php/modules/eaccelerator.so
---Type <return> to continue, or q <return> to quit---
#0 _zend_mm_free_int (heap=0x552ad550f0, p=Variable "p" is not
available.
) at /root/php-5.2.1/Zend/zend_alloc.c:616
616 if (UNEXPECTED(prev->next_free_block != mm_block) ||
UNEXPECTED(next->prev_free_block != mm_block)) {
(gdb)
--
Edit bug report at http://bugs.php.net/?id=40466&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40466&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40466&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40466&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40466&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40466&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40466&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40466&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40466&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40466&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40466&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40466&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40466&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40466&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40466&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40466&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40466&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40466&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40466&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40466&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40466&r=mysqlcfg
