Bug #68635 [NEW]: SIGSEGV or SIGABRT in fpm_children_free

From: jeichorn Operating system: Ubuntu 12.04 PHP version: 5.5.20 Package: FPM related Bug Type: Bug Bug description:SIGSEGV or SIGABRT in fpm_children_free Description: ------------ I am seeing random SIGSEGV and SIGABRT among a # of different fpm-pools in both 5.5.19 and 5.5.20. This behavior was not seen with 5.5.18. Test script: --------------- This is happening in 100s of different sites all running the wordpress 4.0.1 though with different plugins/themes. I haven't been able to detect the code causing the problem since it only shows up randomly under load. Actual result: -------------- #0 0x00007f5c129253c4 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f5c129253c4 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000791dfe in fpm_children_free (child=<optimized out>) at /build/buildd/php5-5.5.20+dfsg/sapi/fpm/fpm/fpm_children.c:170 #2 0x000000000079ffcd in fpm_worker_pool_cleanup (which=<optimized out>, arg=<optimized out>) at /build/buildd/php5-5.5.20+dfsg/sapi/fpm/fpm/fpm_worker_pool.c:43 #3 0x00000000007928e6 in fpm_cleanups_run (type=1) at /build/buildd/php5-5.5.20+dfsg/sapi/fpm/fpm/fpm_cleanup.c:45 #4 0x0000000000791d21 in fpm_run (max_requests=0x7ffff25cd1e8) at /build/buildd/php5-5.5.20+dfsg/sapi/fpm/fpm/fpm.c:117 #5 0x0000000000466408 in main (argc=6, argv=0x7ffff25cf358) at /build/buildd/php5-5.5.20+dfsg/sapi/fpm/fpm/fpm_main.c:1862 -- Edit bug report at https://bugs.php.net/bug.php?id=68635&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68635&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68635&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68635&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68635&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68635&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68635&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68635&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68635&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68635&r=support Expected behavior: https://bugs.php.net/fix.php?id=68635&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68635&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68635&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68635&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68635&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68635&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68635&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68635&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68635&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68635&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68635&r=mysqlcfg