From:             lys0212 at qq dot com
Operating system: RHEL6.3
PHP version:      5.3.19
Package:          FPM related
Bug Type:         Bug
Bug description:php-fpm segfault

Description:
------------
Recently, the new a server used to make web, configuration, software 
installation, etc. And now the production environment is the same. On-line
soon 
found that /var/log/messages appear PHP-FPM segment error log
------------------------------------------------------------------------
Dec 14 16:57:15 localhost kernel: php-fpm[32231]: segfault at 3701788 ip 
00000000007e10b1 sp 00007fff7c27f2c0 error 4 in php-fpm[400000+a5c000]
Dec 14 16:57:16 localhost abrt[2735]: Saved core dump of pid 32231 
(/web/software/php/sbin/php-fpm) to
/var/spool/abrt/ccpp-2012-12-14-16:57:15-
32231 (279961600 bytes)
Dec 14 16:57:16 localhost abrtd: Directory 'ccpp-2012-12-14-16:57:15-32231'

creation detected
Dec 14 16:57:16 localhost abrtd: Executable
'/web/software/php/sbin/php-fpm' 
doesn't belong to any package
Dec 14 16:57:16 localhost abrtd: 'post-create' on
'/var/spool/abrt/ccpp-2012-12-
14-16:57:15-32231' exited with 1
Dec 14 16:57:16 localhost abrtd: Corrupted or bad directory 
/var/spool/abrt/ccpp-2012-12-14-16:57:15-32231, deleting
--------------------------------------------------------------
Then after punch, find this mistake occur only in a page, the page, but
nothing 
special, but also in other production machine work well.
What is the cause?
The following is core dump information:

[root@localhost job]# gdb php -c core.32270 
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-56.el6)
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/php...(no debugging symbols found)...done.

warning: core file may not match specified executable file.
[New Thread 32270]
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `php-fpm: pool www                                   
                         
'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000007e10b1 in zend_mm_free_cache ()
Missing separate debuginfos, use: debuginfo-install
glibc-2.12-1.80.el6.x86_64
(gdb) bt
#0  0x00000000007e10b1 in zend_mm_free_cache ()
#1  0x00007fca780e53e8 in ?? ()
#2  0x0000000001b5c978 in ?? ()
#3  0x00000000007fca4f in zend_error_noreturn ()
#4  0x0000000000000002 in ?? ()
#5  0x0000000001c1b060 in ?? ()
#6  0x00000000007a86af in virtual_stat ()
#7  0x00007fff7c27f580 in ?? ()
#8  0x6961625f6473732f in ?? ()
#9  0x2f7068702f696163 in ?? ()
#10 0x507463656a6f7270 in ?? ()
#11 0x6975626f6a2f5048 in ?? ()
#12 0x732f7070612f3456 in ?? ()
#13 0x2f626f6a2f657469 in ?? ()
#14 0x7068702e6f666e69 in ?? ()
#15 0x0070007068007000 in ?? ()
#16 0x000000007068702e in ?? ()
#17 0x0000000000000000 in ?? ()
(gdb)



-- 
Edit bug report at https://bugs.php.net/bug.php?id=63785&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=63785&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=63785&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=63785&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=63785&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=63785&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=63785&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=63785&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=63785&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=63785&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=63785&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=63785&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=63785&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=63785&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63785&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=63785&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=63785&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=63785&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63785&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=63785&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=63785&r=mysqlcfg

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