Bug #71192 [Opn->Fbk]: Segfault on Shutdown

[email protected]
Newsgroups php.bugs
Message-ID <[email protected]>
Edit report at https://bugs.php.net/bug.php?id=71192&edit=1

 ID:                 71192
 Updated by:         [email protected]
 Reported by:        michael at currinda dot com
 Summary:            Segfault on Shutdown
-Status:             Open
+Status:             Feedback
 Type:               Bug
 Package:            Reproducible crash
 Operating System:   Ubuntu Precise
 PHP Version:        7.0.1
 Block user comment: N
 Private report:     N



Previous Comments:
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[2015-12-22 07:55:10] [email protected]

try with:

USE_ZEND_ALLOC=0 ZEND_DONT_UNLOAD_MODULES=1 valgrind php7 yourscript.php

it will shows where the problem came from, and I guess it probably relates to YAML.

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[2015-12-22 07:48:50] michael at currinda dot com

Unfortunately I wouldn't be able to test it without YAML, this is on a live server. There doesn't seem to be a huge amount of rhyme or reason to the actual scripts that are crashing it. I've had a case where the same script, with slightly different database inputs ie. a different record is crashing it.

I've also downloaded the database to my local machine, run the script on local (mac running same version, though not compiled) and it hasn't crashed.

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[2015-12-22 05:44:23] [email protected]

Hi michael!

Do you get this segfault as well with YAML not installed? What version of YAML do you have installed. Is there a specific script that is causing this, if so are you able to post it?

thanks

------------------------------------------------------------------------
[2015-12-22 04:58:00] michael at currinda dot com

Description:
------------
Segfault on shutdown, not sure what script is causing this but getting reports of unclean exits from browsers.

Compiled with:

'./configure' \
'--prefix=/usr/local' \
'--with-libdir=/lib/x86_64-linux-gnu' \
'--with-mysqli' \
'--enable-fpm' \
'--with-readline' \
'--with-pdo_mysql' \
'--with-curl' \
'--enable-pcntl' \
'--enable-mbstring' \
'--enable-debug' \
'--with-zlib' \
'--with-pdo' \
'--enable-so' \
'--with-mcrypt' \
'--with-gd' \
'--enable-gd-native-ttf' \
'--with-openssl' \
'--with-png-dir=/usr' \
'--with-jpeg-dir=/usr' \
'--with-freetype-dir=usr' \
'--with-ttf' \
'--with-exif' \
'--enable-bcmath' \

also has PECL YAML extension installed.



Expected result:
----------------
Clean shutdown

Actual result:
--------------
#0  0x000000000096df76 in zend_mm_find_leaks_small (p=0x7f562a200000, i=509, j=38, leak=0x7fffa6a43b40)
    at /home/ubuntu/php-7.0.1/Zend/zend_alloc.c:1996
#1  0x000000000096e0e3 in zend_mm_find_leaks (heap=0x7f562b800040, p=0x7f562a200000, i=509, leak=0x7fffa6a43b40)
    at /home/ubuntu/php-7.0.1/Zend/zend_alloc.c:2024
#2  0x000000000096e5ca in zend_mm_check_leaks (heap=0x7f562b800040) at /home/ubuntu/php-7.0.1/Zend/zend_alloc.c:2128
#3  0x000000000096e88a in zend_mm_shutdown (heap=0x7f562b800040, full=0, silent=0) at /home/ubuntu/php-7.0.1/Zend/zend_alloc.c:2193
#4  0x000000000096f6f9 in shutdown_memory_manager (silent=0, full_shutdown=0) at /home/ubuntu/php-7.0.1/Zend/zend_alloc.c:2629
#5  0x000000000090e8a5 in php_request_shutdown (dummy=0x0) at /home/ubuntu/php-7.0.1/main/main.c:1833
#6  0x0000000000a71239 in main (argc=6, argv=0x7fffa6a442c8) at /home/ubuntu/php-7.0.1/sapi/fpm/fpm/fpm_main.c:1972


------------------------------------------------------------------------



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