PHP :: Bug #68862 :: crash in php5ts.dll

Bug #68862	crash in php5ts.dll
Submitted:	2015-01-20 13:08 UTC	Modified:	2015-02-01 04:22 UTC
From:	chr dot schubert at gmx dot de	Assigned:
Status:	No Feedback	Package:	Reproducible crash
PHP Version:	5.5.20	OS:	Windows 7 / Windows 2008 R2
Private report:	No	CVE-ID:	None

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From:	chr dot schubert at gmx dot de
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[2015-01-20 13:08 UTC] chr dot schubert at gmx dot de

Description:
------------
I am running a Windows (7 & 2008R2) web server which handles quite a few requests from many different clients. The webserver is Apache 2.4.10 downloaded from https://www.apachelounge.com/download. It is used together with PHP 5.5.20 (obtained from http://windows.php.net/download#php-5.5-ts-VC11-x86) installed as Apache 2.0 Handler (= Output in field Server API from phpinfo()).

When a php script is accessed from different Clients via the web Server, it does not take long (~30seconds) until I receive an "Access Violation error 0xc0000005" (This is if I run httpd -X. Otherwise corresponding log entries occur)

After the Crash the backtrace points at varying positions in php5ts.dll.

Only one module is being used by my php: php_oci8_11g.dll

I tried both the x86 and x64 Versions on multiple computers. It seems to me that the x86 Version takes a bit longer to Crash. Any help is greatly appreciated.

Changes made to php.ini (compared to php.ini-dist):
  extension=php_oci8_11g.dll
  date.timezone = "Europe/Berlin"
  date.default_latitude = 51.248532
  date.default_longitude = 6.704677

Test script:
---------------
Unfortunately, I cannot publish the php script we run. However, I am happy to try out any suggestions.

I can only publish how the Clients Access the webserver:
<html>
<head>
<meta http-equiv="refresh" content="0">
</head>
<body>
<iframe src="http://webserver/script.php?event=PING" />
</body>
</html>

Expected result:
----------------
No Crash ;-)

Actual result:
--------------
-----------------------------------------
Visual Studio Backtrace 1:
-----------------------------------------
 	ntdll.dll!77112d47() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]	
 	kernel32.dll!754cc484() 	
 	kernel32.dll!754cc484() 	
 	msvcr110.dll!611edac2() 	
>	php5ts.dll!timelib_time_dtor(timelib_time * t=0x0759a818)  Line 84 + 0x12 bytes	C
 	php5ts.dll!php_format_date(char * format=0x05e75e10, int format_len=3, long ts=1421756704, int localtime=1, void * * * tsrm_ls=0x057ae6e0)  Line 1251 + 0x8 bytes	C
 	php5ts.dll!php_date(int ht=1, _zval_struct * return_value=0x05e75b28, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x00000000, int return_value_used=1, void * * * tsrm_ls=0x057ae6e0, int localtime=1)  Line 1227	C
 	php5ts.dll!zif_date(int ht=1, _zval_struct * return_value=0x05e75b28, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x00000000, int return_value_used=1, void * * * tsrm_ls=0x057ae6e0)  Line 1356 + 0x1f bytes	C
 	php5ts.dll!zend_do_fcall_common_helper_SPEC(_zend_execute_data * execute_data=0x00270000, void * * * tsrm_ls=0x075a7ad0)  Line 551	C
 	php5ts.dll!execute_ex(_zend_execute_data * execute_data=0x05e62064, void * * * tsrm_ls=0x057ae6e0)  Line 363 + 0xf9 bytes	C
 	php5ts.dll!zend_execute(_zend_op_array * op_array=0x05ded728, void * * * tsrm_ls=0x0000002c)  Line 388 + 0x1a6 bytes	C
 	php5ts.dll!zend_execute_scripts(int type=262983856, void * * * tsrm_ls=0x00000008, _zval_struct * * retval=0x00000001, int file_count=0, ...)  Line 1331	C
 	php5ts.dll!zend_set_timeout(long seconds=0, int reset_signals=1027153623)  Line 1510	C
 	php5ts.dll!_emalloc(unsigned int size=)  Line 2430	C
 	php5ts.dll!php_auto_globals_create_files(const char * name=0x0000001a, unsigned int name_len=265405876, void * * * tsrm_ls=0x0fd1ad87)  Line 720	C
 	php5ts.dll!_xmlGetGlobalState()  + 0x11 bytes	
 	0518f770()	
 	15ff016a()	

----------------------------------
Visual Studio Backtrace 2
----------------------------------
>	ntdll.dll!77112d47() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]	
 	ntdll.dll!77112cf8() 	
 	kernel32.dll!754cc484() 	
 	msvcr110.dll!611edac2() 	
 	msvcr110.dll!611f310f() 	
 	msvcr110.dll!611edaff() 	
 	php5ts.dll!seek_to_tz_position(const unsigned char * * tzf=0x052bf684, char * timezone=0x0027bf50, const _timelib_tzdb * tzdb=0x0ff43e98)  Line 269 + 0x9 bytes	C
 	php5ts.dll!timelib_parse_tzfile(char * timezone=0x0027bf50, const _timelib_tzdb * tzdb=0x0ff43e98)  Line 320 + 0x13 bytes	C
 	php5ts.dll!php_date_parse_tzfile(char * formal_tzname=0x0027bf50, const _timelib_tzdb * tzdb=0x0ff43e98, void * * * tsrm_ls=0x0226bae8)  Line 912 + 0xa bytes	C
 	php5ts.dll!get_timezone_info(void * * * tsrm_ls=0x0226bae8)  Line 987 + 0x19 bytes	C
 	php5ts.dll!php_format_date(char * format=0x05595d68, int format_len=3, long ts=1421758713, int localtime=1, void * * * tsrm_ls=0x0226bae8)  Line 1241	C
 	php5ts.dll!php_date(int ht=1, _zval_struct * return_value=0x05595ab0, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x00000000, int return_value_used=1, void * * * tsrm_ls=0x0226bae8, int localtime=1)  Line 1227	C
 	php5ts.dll!zif_date(int ht=1, _zval_struct * return_value=0x05595ab0, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x00000000, int return_value_used=1, void * * * tsrm_ls=0x0226bae8)  Line 1356 + 0x1f bytes	C
 	php5ts.dll!zend_do_fcall_common_helper_SPEC(_zend_execute_data * execute_data=0x001c0000, void * * * tsrm_ls=0x0688bd28)  Line 551	C
 	php5ts.dll!execute_ex(_zend_execute_data * execute_data=0x0558397c, void * * * tsrm_ls=0x0226bae8)  Line 363 + 0xf9 bytes	C
 	php5ts.dll!zend_execute(_zend_op_array * op_array=0x0a13d728, void * * * tsrm_ls=0x0000002c)  Line 388 + 0x1a6 bytes	C
 	php5ts.dll!zend_execute_scripts(int type=263508144, void * * * tsrm_ls=0x00000008, _zval_struct * * retval=0x00000001, int file_count=0, ...)  Line 1331	C
 	php5ts.dll!zend_set_timeout(long seconds=0, int reset_signals=1027153623)  Line 1510	C
 	php5ts.dll!_emalloc(unsigned int size=)  Line 2430	C
 	php5ts.dll!php_auto_globals_create_files(const char * name=0x0000001a, unsigned int name_len=265930164, void * * * tsrm_ls=0x0fd9ad87)  Line 720	C
 	php5ts.dll!_xmlGetGlobalState()  + 0x11 bytes	
 	052bfa38()	
 	15ff016a()

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[2015-01-21 10:33 UTC] ab@php.net

-Status: Open +Status: Feedback

[2015-01-21 10:33 UTC] ab@php.net

Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.

It's hard to say what happens under the carpet yet. It would rock if you could extract some reproduce snippet from your script. Also, you could try some of the latest 5.5 snapshots http://windows.php.net/downloads/snaps/php-5.5/ .

Thanks.

[2015-02-01 04:22 UTC] php-bugs at lists dot php dot net

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.

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