ID: 48744
Comment by: dougcsd at yahoo dot com
Reported By: tom at ideaweb dot de
Status: Feedback
Bug Type: Safe Mode/open_basedir
Operating System: Linux Debian Etch
PHP Version: 5.3.0
Assigned To: fb-req-jani
New Comment:
Here is more info on this.
I ran into this earlier while running 5.3 Alpha snapshots.
The Snapshot: php5.3-200810090430 (Alpha 3) did not seem to have this
problem yet, and works ok. I have reproduced the problem on two
machines and multiple operating systems. I see the scrambled open
basedir paths in the apache logs when a simple phpinfo() fails.
Both systems were running Slackware 12.1 (one 32 bit, and one 64 bit)
BlueWhite64 for the 12.1 64 bit.
I recently upgraded to Slackware 12.2 on the 32 bit machine to upgrade
the libc to a newer version and see if it helped, but the problem
persists.
I first saw this problem in php5.3-200903230730, and assumed it was a
development bug that would work itself out in time, and simply reverted
back. However the problem has carried over to 5.3.0 release.
I have done a bit of digging and it appears that both PHP and Apache
are using pthreads on these machines. Because of the randomness of when
the corruption occurs, I believe this may be related to a threading
issue, but I have yet to discover any additional details.
Previous Comments:
------------------------------------------------------------------------
[2009-07-16 13:08:25] jani@php.net
Have you figured out the differences between the working and
non-working servers running 5.3 yet? That's propably the only way to
debug this. Otherwise, just let this rot.
------------------------------------------------------------------------
[2009-07-15 07:29:24] tom at ideaweb dot de
Sorry for the delay, the test server was in use...
Seems to be the same =(
(gdb) run -X -d /www/apache/current/
Starting program: /www/apache/2.2.11/bin/httpd -X -d
/www/apache/current/
Failed to read a valid object file image from memory.
[Thread debugging using libthread_db enabled]
[New Thread -1212967232 (LWP 27684)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1212967232 (LWP 27684)]
0xb755848f in OnUpdateBaseDir (entry=0x824fbb8,
new_value=0x83b5070
"/www/htdocs/ecolint.ch/dev:/www/htdocs/ecolint.ch/tmp:/www/htdocs/eco
lint.ch/mysql",
new_value_length=82, mh_arg1=0x48, mh_arg2=0xb7b37e80,
mh_arg3=0x0, stage=4)
at /www/src/php5.3-200907101630/main/fopen_wrappers.c:103
103 if (!*p || !**p) {
(gdb)
------------------------------------------------------------------------
[2009-07-10 22:15:18] jani@php.net
Is the backtrace the same?
------------------------------------------------------------------------
[2009-07-10 18:46:07] tom at ideaweb dot de
Keeps crashing with php5.3-200907101630 =(
[Fri Jul 10 20:41:45 2009] [notice] child pid 13862 exit signal
Segmentation fault (11)
[Fri Jul 10 20:41:47 2009] [notice] child pid 13863 exit signal
Segmentation fault (11)
------------------------------------------------------------------------
[2009-07-10 18:26:39] jani@php.net
Please try using this CVS snapshot:
http://snaps.php.net/php5.3-latest.tar.gz
For Windows:
http://windows.php.net/snapshots/
Just in case this is just another side-effect caused by another bug..
------------------------------------------------------------------------
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the rest of the comments, please view the bug report online at
http://bugs.php.net/48744
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