ID: 34725
Updated by: [EMAIL PROTECTED]
Reported By: david at tulloh dot id dot au
Status: Open
Bug Type: Scripting Engine problem
Operating System: Debian Linux
PHP Version: 5.1.0RC3
-Assigned To:
+Assigned To: dmitry
New Comment:
The problem is related to TSRM and ext/pcre that registers its globals
with shutdown handler:
ZEND_INIT_MODULE_GLOBALS(pcre, php_pcre_init_globals,
php_pcre_shutdown_globals);
PHP tries to call php_pcre_shutdown_globals() after it unloads ext/pcre
and crashes.
I'll look if it is possible to fix this, but may be it is not
possible.
As work around I recomend not to compile ext/pcre as DSO.
Previous Comments:
------------------------------------------------------------------------
[2005-10-27 04:59:20] david at tulloh dot id dot au
Repeated with --enable-debug
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1210001728 (LWP 23835)]
0xb7c07840 in ?? ()
(gdb) bt
#0 0xb7c07840 in ?? ()
#1 0x080e5ce0 in tsrm_shutdown () at php-cvs-5.1/TSRM/TSRM.c:180
#2 0x081a82f4 in main (argc=3, argv=0xbffffb54)
at php-cvs-5.1/sapi/cli/php_cli.c:1155
http://tulloh.id.au/php/bugs/34725/fail.debug.valgrind
------------------------------------------------------------------------
[2005-10-26 11:08:19] [EMAIL PROTECTED]
What if you ,/configure PHP with --enable-debug ?
Are you still able to replicate it?
If yes, please generate gdb backtrace using debug build and repeat with
valgrind too.
------------------------------------------------------------------------
[2005-10-26 11:03:28] david at tulloh dot id dot au
I finished the valgrind run, I've hosted the log files as they were a
little bigish.
http://tulloh.id.au/php/bugs/34725/pass.valgrind
http://tulloh.id.au/php/bugs/34725/fail.valgrind
Some related files (config & test file) are also in the directory.
------------------------------------------------------------------------
[2005-10-17 12:33:30] [EMAIL PROTECTED]
Use valgrind to get some more info about it.
------------------------------------------------------------------------
[2005-10-17 10:13:05] david at tulloh dot id dot au
I managed to track this down to a much more specific test case. The
following configure line is the smallest reproducable test case I could
find.
./configure \
'--disable-all' \
'--enable-cli' \
'--disable-cgi' \
'--with-apxs2=/usr/bin/apxs2' \
'--with-pcre-regex=shared,/usr'
Removing the apxs2 line, or making the pcre extension non-shared hides
the fault, it's also not visible if the pcre extension isn't loaded.
The tests were done with the latest CVS version, 5.1 branch.
apache2-mpm-prefork (debian stable) - 2.0.54
libpcre3 - 5.0
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/34725
--
Edit this bug report at http://bugs.php.net/?id=34725&edit=1
