Bug #78894 [Fbk->NoF]: Preload: double free or corruption crash

From: Date: Sun, 15 Dec 2019 04:22:08 +0000
Subject: Bug #78894 [Fbk->NoF]: Preload: double free or corruption crash
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-224306@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=78894&edit=1

 ID:               78894
 Updated by:       php-bugs@lists.php.net
 Reported by:      luis dot armengol at koyi dot tv
 Summary:          Preload: double free or corruption crash
-Status:           Feedback
+Status:           No Feedback
 Type:             Bug
 Package:          opcache
 Operating System: Centos 7.3
 PHP Version:      7.4.0
 Private report:   N

 New Comment:

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.


Previous Comments:
------------------------------------------------------------------------
[2019-12-06 14:16:10] klarkent911 at gmail dot com

Hello, I probably can answer since I have a similar issue even though it's totally not related
to Zend.
Context: php-fpm running on a ubuntu based container
When trying to test our codebase against php7.4 with preloading enabled we get exactly the same
problem.
Our preload file basically contains an include_once 'vendor/autoload.php' and then a
series of require_once some_files.php` which require all the classes that we use from a
proprietary framework.
There is nothing much special done there and the requires are around 210.

------------------------------------------------------------------------
[2019-12-04 09:07:41] nikic@php.net

Can you please provide the script you use for preloading?

------------------------------------------------------------------------
[2019-12-01 01:04:27] luis dot armengol at koyi dot tv

Description:
------------
Im trying to preload all ZF1 classes to opcache without any luck. Im preloading classes by block
manually, I mean, all Zend/Db, all Zend/Cache, all Zend/Config and it works perfectly until a number
of require_once or opcache_compile_file calls. 

It starts perfectly httpd service without any error but in the first http call I receive a crash
with  Error in `/usr/sbin/httpd': double free or corruption.

Also I receive that crash/segmentation fault in those cases when I shutdown httpd service.

If I disable the preloading of one of the block classes (ie: Zend/Db) I can preload another block
and it works, so I assume is something about the number of files of ZF1 im trying to preload (i know
its old but without preloading its working ok)

Actual result:
--------------
*** Error in `/usr/sbin/httpd': double free or corruption (!prev): 0x0000556c4e770c30 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x81679)[0x7f307c037679]
/etc/httpd/modules/libphp74.so(+0x300f34)[0x7f306db05f34]
/etc/httpd/modules/libphp74.so(zend_hash_add+0x121)[0x7f306db06091]
/etc/httpd/modules/libphp74.so(+0x2e2159)[0x7f306dae7159]
/etc/httpd/modules/libphp74.so(+0x2e2aa7)[0x7f306dae7aa7]
/etc/httpd/modules/libphp74.so(+0x2e2ad0)[0x7f306dae7ad0]
/etc/httpd/modules/libphp74.so(+0x2ba0b5)[0x7f306dabf0b5]
/etc/httpd/modules/libphp74.so(compile_file+0x8a)[0x7f306dac07fa]
/opt/remi/php74/root/usr/lib64/php/modules/opcache.so(+0x14b11)[0x7f306cb86b11]
/opt/remi/php74/root/usr/lib64/php/modules/opcache.so(+0x17747)[0x7f306cb89747]
/etc/httpd/modules/libphp74.so(+0x33eb1d)[0x7f306db43b1d]
/etc/httpd/modules/libphp74.so(+0x35aa80)[0x7f306db5fa80]
/etc/httpd/modules/libphp74.so(execute_ex+0x18b2)[0x7f306db78162]
/etc/httpd/modules/libphp74.so(zend_execute+0x131)[0x7f306db7f461]
/etc/httpd/modules/libphp74.so(zend_execute_scripts+0xc3)[0x7f306daf9563]
/etc/httpd/modules/libphp74.so(php_execute_script+0x270)[0x7f306da98430]
/etc/httpd/modules/libphp74.so(+0x37c1e0)[0x7f306db811e0]
/usr/sbin/httpd(ap_run_handler+0x40)[0x556c4d8ddaf0]
/usr/sbin/httpd(ap_invoke_handler+0x69)[0x556c4d8de039]
/usr/sbin/httpd(ap_internal_redirect+0x4c)[0x556c4d8f1fac]
/etc/httpd/modules/mod_rewrite.so(+0x4e4c)[0x7f30762b1e4c]
/usr/sbin/httpd(ap_run_handler+0x40)[0x556c4d8ddaf0]
/usr/sbin/httpd(ap_invoke_handler+0x69)[0x556c4d8de039]
/usr/sbin/httpd(ap_process_async_request+0x1ea)[0x556c4d8f2c4a]
/usr/sbin/httpd(ap_process_request+0x22)[0x556c4d8f2f32]
/usr/sbin/httpd(+0x530c2)[0x556c4d8ef0c2]
/usr/sbin/httpd(ap_run_process_connection+0x40)[0x556c4d8e7120]
/etc/httpd/modules/mod_mpm_prefork.so(+0x37af)[0x7f30736fb7af]
/etc/httpd/modules/mod_mpm_prefork.so(+0x39f5)[0x7f30736fb9f5]
/etc/httpd/modules/mod_mpm_prefork.so(+0x468e)[0x7f30736fc68e]
/usr/sbin/httpd(ap_run_mpm+0x4e)[0x556c4d8c20ce]
/usr/sbin/httpd(main+0xa96)[0x556c4d8bae26]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7f307bfd8505]
/usr/sbin/httpd(+0x1ef5f)[0x556c4d8baf5f]



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



--
Edit this bug report at https://bugs.php.net/bug.php?id=78894&edit=1


Thread (15 messages)

« previous php.bugs (#224306) next »