From: eyal at zend dot com
Operating system: Linux
PHP version: 5.2.6
PHP Bug Type: Scripting Engine problem
Bug description: Segmentation fault when executing bug41037.phpt on apache
module
Description:
------------
I executed bug41037.phpt on apache module.
The result I got is that first request passes successfully, but next
requests causes segmentation fault.
To reproduce place the script from reproduction code section in your
htdocs and request it as follows:
ab -n1000 -c10 [URL]
Note that all zend extensions were not loaded at the time of the test
Reproduce code:
---------------
<?php
function a() {
echo "hello";
unregister_tick_function('a');
}
declare (ticks=1);
register_tick_function('a');
echo "Done\n";
?>
Expected result:
----------------
hello
Warning\: unregister_tick_function\(\)\: Unable to delete tick function
executed at the moment in
.+? on line [0-9]+
Done
hello
Warning\: unregister_tick_function\(\)\: Unable to delete tick function
executed at the moment in
.+? on line [0-9]+
hello
Warning\: unregister_tick_function\(\)\: Unable to delete tick function
executed at the moment in
.+? on line [0-9]+
Actual result:
--------------
Segmentation fault
BT:
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1216579920 (LWP 23236)]
zend_llist_apply (l=0x0, func=0xb740a6f0 <user_tick_function_call>) at
/php-5.2.6/Zend/zend_llist.c:192
192 for (element=l->head; element; element=element->next) {
(gdb) bt
#0 zend_llist_apply (l=0x0, func=0xb740a6f0 <user_tick_function_call>) at
/php-5.2.6/Zend/zend_llist.c:192
#1 0xb7407f9c in run_user_tick_functions (tick_count=1) at
/php-5.2.6/ext/standard/basic_functions.c:5364
#2 0xb747c068 in php_tick_iterator (data=0x83a3438, arg=0xbf8b77e0) at
/php-5.2.6/main/php_ticks.c:64
#3 0xb74a42ec in zend_llist_apply_with_argument (l=0xb77a2444,
func=0xb747c050 <php_tick_iterator>, arg=0xbf8b77e0) at
/php-5.2.6/Zend/zend_llist.c:236
#4 0xb747c042 in php_run_ticks (count=1) at
/php-5.2.6/main/php_ticks.c:71
#5 0xb74c98d5 in ZEND_TICKS_SPEC_CONST_HANDLER (execute_data=0xbf8b7850)
at /php-5.2.6/Zend/zend_vm_execute.h:2377
#6 0xb74cae28 in execute (op_array=0x835ff88) at
/php-5.2.6/Zend/zend_vm_execute.h:92
#7 0xb74ad404 in zend_execute_scripts (type=8, retval=<value optimized
out>, file_count=3) at /php-5.2.6/Zend/zend.c:1134
#8 0xb746dc60 in php_execute_script (primary_file=0xbf8b9af8) at
/php-5.2.6/main/main.c:2005
#9 0xb7528591 in php_handler (r=0x83a1478) at
/php-5.2.6/sapi/apache2handler/sapi_apache2.c:629
#10 0x08079259 in ap_run_handler ()
#11 0x0807c5b7 in ap_invoke_handler ()
#12 0x08089998 in ap_process_request ()
#13 0x08086c9b in ?? ()
#14 0x083a1478 in ?? ()
#15 0x00000004 in ?? ()
#16 0x083a1478 in ?? ()
#17 0x00000000 in ?? ()
--
Edit bug report at http://bugs.php.net/?id=45352&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=45352&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=45352&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=45352&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=45352&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=45352&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=45352&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=45352&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=45352&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=45352&r=support
Expected behavior: http://bugs.php.net/fix.php?id=45352&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=45352&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=45352&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=45352&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45352&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=45352&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=45352&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=45352&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=45352&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=45352&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=45352&r=mysqlcfg
