Bug #68038 [NEW]: Segmentation fault; zend_alloc.c: No such file or directory

From: david at davidkrider dot com Operating system: Ubuntu 14.04 PHP version: 5.5.16 Package: Reproducible crash Bug Type: Bug Bug description:Segmentation fault; zend_alloc.c: No such file or directory Description: ------------ Program received signal SIGSEGV, Segmentation fault. _zend_mm_free_int (heap=0x7f177287fff0, p=0x7f17601389a0) at /build/buildd/php5-5.5.16+dfsg/Zend/zend_alloc.c:2104 2104 /build/buildd/php5-5.5.16+dfsg/Zend/zend_alloc.c: No such file or directory. Test script: --------------- Full writeup here: http://serverfault.com/questions/629231/how-can-a-bog-standard-wordpress-install-break-php?noredirect=1#comment756137_629231 Short story is... Bog-standard Wordpress setup. Home page and dashboard work fine. Trying to navigate to any linked page causes a sigsev in apache, which backtraces to the above. I upgraded from Ubuntu's current 5.5.9 to 5.5.16 in the PPA at https://launchpad.net/~ondrej/+archive/ubuntu/php5. No change. -- Edit bug report at https://bugs.php.net/bug.php?id=68038&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68038&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68038&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68038&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68038&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68038&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68038&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68038&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68038&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68038&r=support Expected behavior: https://bugs.php.net/fix.php?id=68038&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68038&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68038&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68038&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68038&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68038&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68038&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68038&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68038&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68038&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68038&r=mysqlcfg