Bug #67926 [Fbk->Opn]: php-fpm segfaults

Edit report at https://bugs.php.net/bug.php?id=67926&edit=1 ID: 67926 User updated by: rmang at lexiconn dot com Reported by: rmang at lexiconn dot com Summary: php-fpm segfaults -Status: Feedback +Status: Open Type: Bug Package: FPM related Operating System: centOS 6.5 64-bit PHP Version: 5.4.32 Block user comment: N Private report: N New Comment: Client is using Magento with Google Website Optimizer enabled (the repeating query seems to be from that module). If it's not a bug, we'll troubleshoot the code. Thanks for the quick reply / nudge in the right direction. Previous Comments: ------------------------------------------------------------------------ [2014-08-28 20:14:05] aharvey@php.net It looks like you're overflowing your stack as a result of a recursive regex. Can you reduce your code to a minimal test case, and if so, does it include a preg_*() call? ------------------------------------------------------------------------ [2014-08-28 19:49:22] rmang at lexiconn dot com Description: ------------ Seeing many segfaults with php-fpm on Apache 2.2.7, mod_fastcgi_2.4.7, php 5.4.32, MySQL 5.5.37 kernel: php-fpm[13984]: segfault at 7fff88cb5fe8 ip 00000000004786ed sp 00007fff88cb5f90 error 6 in php-fpm[400000+9a6000] kernel: php-fpm[13945]: segfault at 7fff88cb5fe8 ip 00000000004786ed sp 00007fff88cb5f90 error 6 in php-fpm[400000+9a6000] abrt[14082]: Not saving repeating crash in '/usr/local/sbin/php-fpm' abrt[14079]: Saved core dump of pid 13984 (/usr/local/sbin/php-fpm) to /var/spool/abrt/ccpp-2014-08-28-15:35:35-13984 (547725312 bytes) abrtd: Directory 'ccpp-2014-08-28-15:35:35-13984' creation detected abrt[14082]: Saved core dump of pid 13945 to core.13945 (546963456 bytes) Actual result: -------------- Program terminated with signal 11, Segmentation fault. #0 match (eptr=0x9ab0213 "') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd7b "\035\\\035'q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=18) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:500 500 { #0 match (eptr=0x9ab0213 "') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd7b "\035\\\035'q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=18) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:500 #1 0x000000000047972a in match (eptr=0x9ab0213 "') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd76 "\177", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=17) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #2 0x000000000048523c in match (eptr=0x9ab0213 "') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=16) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #3 0x000000000047972a in match (eptr=0x9ab0212 "y') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd86 "q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=15) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #4 0x000000000048523c in match (eptr=0x9ab0212 "y') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=14) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #5 0x000000000047972a in match ( eptr=0x9ab0211 "ry') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd86 "q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=13) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #6 0x000000000048523c in match ( eptr=0x9ab0211 "ry') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=12) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #7 0x000000000047972a in match ( eptr=0x9ab0210 "ory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd86 "q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=11) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #8 0x000000000048523c in match ( eptr=0x9ab0210 "ory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=10) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #9 0x000000000047972a in match ( eptr=0x9ab020f "gory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd86 "q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=9) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #10 0x000000000048523c in match ( eptr=0x9ab020f "gory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=8) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #11 0x000000000047972a in match ( eptr=0x9ab020e "egory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd86 "q", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=<value optimized out>, md=0x7fff88cb88a0, eptrb=0x2, rdepth=7) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:973 #12 0x000000000048523c in match ( eptr=0x9ab020e "egory') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", ecode=0x154bd8b "s", mstart=0x9ab020a "'category') AND (t_def.store_id IN (0, '2')) ORDER BY t_def.store_id DESC LIMIT 1", offset_top=4, md=0x7fff88cb88a0, eptrb=0x0, rdepth=6) at /home/admin/php-5.4.32/ext/pcre/pcrelib/pcre_exec.c:2039 #13 0x000000000047972a in match ( ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67926&edit=1