Bug #62418 [Opn]: php-fpm master process crashes

Edit report at https://bugs.php.net/bug.php?id=62418&edit=1 ID: 62418 Updated by: rasmus@php.net Reported by: php at scratchspace dot com Summary: php-fpm master process crashes Status: Open Type: Bug Package: FPM related Operating System: CentOS 6.2 x86_x64 PHP Version: 5.3.14 Block user comment: N Private report: N New Comment: Not sure. Many people out there run with epoll without problems. Previous Comments: ------------------------------------------------------------------------ [2012-06-27 18:28:14] php at scratchspace dot com We've been up and running for 24 hours with "events.mechanism = poll" and no problems. Let's give it a couple of days to be sure this workaround works. Is this issue specific to epoll and the way we have php-fpm configured (to use minimal resources), or is this is a bug in php-fpm that can ultimately be fixed? ------------------------------------------------------------------------ [2012-06-26 06:10:02] rasmus@php.net Could you check if it is related to epoll? In your php-fpm.conf file, set: events.mechanism = poll to try with "poll" instead. You can also try setting it to "select" ------------------------------------------------------------------------ [2012-06-26 05:56:45] php at scratchspace dot com Description: ------------ php-fpm master process crashes randomly on lightly loaded server running nginx/0.8.54 with various CMS applications. It is unknown how to reproduce the crash, but occurs in both php 5.3.13 and 5.3.14. Actual result: -------------- 5.3.14 backtrace Core was generated by `php-fpm:'. Program terminated with signal 11, Segmentation fault. #0 0x00000000016b5300 in ?? () #1 0x00000000006e02f3 in fpm_event_epoll_wait (queue=<value optimized out>, timeout=<value optimized out>) at /usr/src/debug/php-5.3.14/sapi/fpm/fpm/events/epoll.c:143 #2 0x00000000006d508f in fpm_event_loop (err=0) at /usr/src/debug/php- 5.3.14/sapi/fpm/fpm/fpm_events.c:401 #3 0x00000000006d01f7 in fpm_run (max_requests=0x7fffd103136c) at /usr/src/debug/php-5.3.14/sapi/fpm/fpm/fpm.c:110 #4 0x00000000006d79a4 in main (argc=1, argv=0x7fffd10334d8) at /usr/src/debug/php-5.3.14/sapi/fpm/fpm/fpm_main.c:1778 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62418&edit=1