Bug #67861 [Opn->Fbk]: after opcache reset all apache children segfault

Edit report at https://bugs.php.net/bug.php?id=67861&edit=1 ID: 67861 Updated by: laruence@php.net Reported by: php at bof dot de Summary: after opcache reset all apache children segfault -Status: Open +Status: Feedback Type: Bug Package: opcache Operating System: openSUSE 11.4 PHP Version: 5.5.16 Block user comment: N Private report: N New Comment: Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2014-08-22 15:29:15] php at bof dot de Fully reproducable using PHP 5.5.16, built the same way described previously. ------------------------------------------------------------------------ [2014-08-19 07:10:23] php at bof dot de Just to make the report complete: the error_log messages correspond to an opcache reset I tried a minute after freshly restarting the apache process. A previous instance occurred after running for half a day with the interned string table full (which was the reason why I wanted to try a reset); so, the problem occurs regardless of how full the cache is. ------------------------------------------------------------------------ [2014-08-19 07:04:47] php at bof dot de Description: ------------ After upgrading from PHP 5.4.29 with APC, to 5.5.15 with opcache, on an official php.net mirror (de2.php.net), I can consistently (tested two times :) crash and burn things by triggering opcache reset through the ocp.php interface. Immediately after the reset, almost all apache children start to segfault. See the apache error_log excerpt below. This is with the opcache bundled with PHP 5.5.15, self-compiled against the exact apache version (opensuse 11.4 evergreen apache 2.2.17-80.1.x86_64) that is running on the machine. opcache.ini: zend_extension=/opt/php/extensions/opcache.so ; see https://github.com/zendtech/ZendOptimizerPlus opcache.memory_consumption=512 opcache.interned_strings_buffer=64 opcache.max_wasted_percentage=50 opcache.max_accelerated_files=8000 opcache.fast_shutdown=1 opcache.revalidate_freq=0 opcache.save_comments=0 ; opcache.blacklist_filename=/opt/php/ini.d/opcache.blacklist opcache.error_log=/tmp/opcache.errors opcache.log_verbosity_level=4 PHP 5.5.15 compiled with this configure call: ./configure \ --prefix=$DIR \ --bindir=$DIR/bin \ --libdir=$DIR \ --includedir=$DIR/include \ --mandir=$DIR/man \ --with-apxs2=/usr/sbin/apxs2 \ --with-config-file-path=$DIR \ --with-config-file-scan-dir=$DIR/ini.d \ --with-zend-vm=GOTO \ --enable-re2c-cgoto \ --disable-cgi \ --enable-bcmath \ --enable-calendar \ --enable-exif \ --enable-ftp \ --enable-intl \ --enable-mbstring \ --enable-pcntl \ --enable-soap \ --enable-sockets \ --enable-zip \ --enable-opcache \ --with-openssl \ --with-zlib \ --with-bz2 \ --with-curl \ --with-gd \ --enable-gd-native-ttf \ --with-jpeg-dir=/usr/include \ --with-gettext \ --with-gmp \ --enable-mysqlnd \ --with-mysqli \ --with-readline \ --with-recode \ --with-xmlrpc \ --with-xsl \ --with-pear \ --with-freetype-dir=/usr/include \ --with-mhash \ --with-mcrypt \ Apache error_log excerpt: Tue Aug 19 08:34:17 2014 (31894): Message Cached script '/srv/www/htdocs/phpweb/include/results.inc' Tue Aug 19 08:34:19 2014 (31921): Message Cached script '/srv/www/htdocs/phpweb/manual/change.php' Tue Aug 19 08:34:20 2014 (31898): Debug Restart Scheduled! Tue Aug 19 08:34:22 2014 (31910): Debug Restarting! Tue Aug 19 08:34:22 2014 (31910): Message Cached script '/srv/www/htdocs/phpweb/manual/ro/sqlite3.loadextension.php' [Tue Aug 19 08:34:23 2014] [notice] child pid 31910 exit signal Segmentation fault (11) [Tue Aug 19 08:34:24 2014] [notice] child pid 31911 exit signal Segmentation fault (11) [Tue Aug 19 08:34:35 2014] [notice] child pid 31898 exit signal Segmentation fault (11) [Tue Aug 19 08:34:35 2014] [notice] child pid 31899 exit signal Segmentation fault (11) Tue Aug 19 08:34:40 2014 (31917): Message Cached script '/srv/www/htdocs/phpweb/manual/it/function.trader-ht-sine.php' [Tue Aug 19 08:34:41 2014] [notice] child pid 31917 exit signal Segmentation fault (11) Expected result: ---------------- no crash Actual result: -------------- crash ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67861&edit=1