Hi list,
please include me in the cc field when replying to this post on the
mailing list.
I have a problem: 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 knows, im
not really into it so i cant be sure.
PHP version 5.2.1, eaccelerator 0.9.5, 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.
After writing to the PHP mailing list and trying the latest PHP snapshot, it
turns out that the problem lies somewhere in eaccelerator.
When i disable the extension i dont experience the crashes.
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'
The eaccelerator part from php.ini:
eaccelerator.shm_size="64"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.log_file="/var/log/httpd/eaccelerator_log"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="1"
eaccelerator.compress="0"
eaccelerator.compress_level="9"
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)
What do you suggest?
regards,
Ivan
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