From: rob at alterlinks dot fr
Operating system: Linux Mandrake 2.4.19-16
PHP version: 5.0.0
PHP Bug Type: Reproducible crash
Bug description: Segmentation Fault 11 in strlen()
Description:
------------
Tested with PHP5.0.0 and later Snapshots with Apache 1.3.31 and 2.0.50,
systematically a Segmentation Fault 11 (error_log Apache), blank page is
shown.
OK with PHP4.3.8.
Result of debug :
[EMAIL PROTECTED] logs]# gdb ../bin/httpd
GNU gdb 5.2.1-2mdk (Mandrake Linux)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
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conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i586-mandrake-linux-gnu"...
(gdb) run -X
Starting program: /usr/local/free_websites/bin/httpd -X
Program received signal SIGSEGV, Segmentation fault.
0x40186bc3 in strlen () from /lib/i686/libc.so.6
(gdb)
Result of bt
#0 0x40186bc3 in strlen () from /lib/i686/libc.so.6
#1 0x40473993 in add_property_string_ex (arg=0x1, key=0x82a4664 "\001",
key_len=0,
str=0x1 <Address 0x1 out of bounds>, duplicate=135993744) at
/download/php5-200407261830/Zend/zend_API.c:1132
#2 0x4032b406 in zif_mysql_fetch_field (ht=1, return_value=0x82a4664,
this_ptr=0x0, return_value_used=1)
at /download/php5-200407261830/ext/mysql/php_mysql.c:2250
#3 0x40497feb in zend_do_fcall_common_helper (execute_data=0xbfffd280,
opline=0x820b7dc, op_array=0x824cd28)
at /download/php5-200407261830/Zend/zend_execute.c:2699
#4 0x40498760 in zend_do_fcall_handler (execute_data=0xbfffd280,
opline=0x820b7dc, op_array=0x824cd28)
at /download/php5-200407261830/Zend/zend_execute.c:2831
#5 0x4049460c in execute (op_array=0x824cd28) at
/download/php5-200407261830/Zend/zend_execute.c:1391
#6 0x40498184 in zend_do_fcall_common_helper (execute_data=0xbfffd350,
opline=0x4088fb70, op_array=0x829207c)
at /download/php5-200407261830/Zend/zend_execute.c:2728
#7 0x40498652 in zend_do_fcall_by_name_handler (execute_data=0xbfffd350,
opline=0x4088fb70, op_array=0x829207c)
at /download/php5-200407261830/Zend/zend_execute.c:2813
#8 0x4049460c in execute (op_array=0x829207c) at
/download/php5-200407261830/Zend/zend_execute.c:1391
#9 0x40470841 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /download/php5-200407261830/Zend/zend.c:1068
#10 0x404295b2 in php_execute_script (primary_file=0xbffff600) at
/download/php5-200407261830/main/main.c:1631
#11 0x404a149e in php_handler (r=0x842ab78) at
/download/php5-200407261830/sapi/apache2handler/sapi_apache2.c:535
#12 0x0807e18b in ap_run_handler (r=0x842ab78) at config.c:152
#13 0x0807e72e in ap_invoke_handler (r=0x6) at config.c:358
#14 0x0806d1fb in ap_process_request (r=0x842ab78) at http_request.c:246
#15 0x08068fef in ap_process_http_connection (c=0x81f2058) at
http_core.c:250
#16 0x08087e2b in ap_run_process_connection (c=0x81f2058) at
connection.c:42
#17 0x0807cbf1 in child_main (child_num_arg=4) at prefork.c:609
#18 0x0807cdad in make_child (s=0x80bb120, slot=0) at prefork.c:649
#19 0x0807ce0e in startup_children (number_to_start=5) at prefork.c:721
#20 0x0807d553 in ap_mpm_run (_pconf=0x80b89f0, plog=0x80f0ad0,
s=0x80b69e8) at prefork.c:940
#21 0x0808299a in main (argc=2, argv=0xbffff994) at main.c:617
#22 0x4012a082 in __libc_start_main () from /lib/i686/libc.so.6
(gdb)
Reproduce code:
---------------
phpMyAdmin script, page sql.php
Expected result:
----------------
Display of contents of Database tables
Actual result:
--------------
Segmentation Fault 11 (no coredump), see gdb results (bt)
--
Edit bug report at http://bugs.php.net/?id=29435&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29435&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29435&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29435&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29435&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29435&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29435&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29435&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29435&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29435&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29435&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29435&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29435&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29435&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29435&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29435&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29435&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29435&r=float
