From: troy dot tinnes at motorola dot com
Operating system: Solaris 2.8
PHP version: 4.3.4
PHP Bug Type: Reproducible crash
Bug description: Web Output stops suddenly - Apache generates Seg fault in log
Description:
------------
Environment:
Sun Solaris 2.8
Sun Ultra Enterprise
PHP 4.3.4
Apache 2.0.47
Problem Description: On some HTML outputs, the page code stops
unexpectedly. There does not appear to be any real reason for halting the
execution - it stops generating code many times - midway through
displaying a record (1 HTML table row). For example if I have a query that
shows which people bought widget "a" in the past month - the output might
be ok. Use the same script and show which people bought widget "b" - the
script might stop 3/4 of the way down the page mid-record. One thing that
is consistent - is that it will always stop in the same place. 2 days
later, Widget "b" output might be fine - displaying Widget "a" is now a
problem.
Reproduce code:
---------------
I use object-oriented code to do the database activities - example:
$db = new myDB ($db1);
$db->connect();
$db->query($sql1);
In the db.class file, I have functions like this:
function connect ()
{
$conn = ocilogon ($this->username, $this->password,
$this->hostspec);
$this->conn = $conn;
}
AND
function query ($sql)
{
$this->stmt = @ociparse ($this->conn, $sql);
if (!$this->stmt) {
return false;
}
else {
@ociexecute($this->stmt, OCI_DEFAULT);
return($this->rowcount());
}
}
As I said before, I do not use persistent connections because I have
several different database instances I connect to based on the type of
information requested.
Expected result:
----------------
I am hoping to see complete HTML outputs!
Actual result:
--------------
BACKTRACE:
---------
solaris8:/opt/web/apache_php/apache2/bin# /usr/misc/bin/gdb
/opt/web/apache_php/apache2/bin/httpd
GNU gdb 5.3
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are welcome to change it and/or distribute copies of it under certain
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 "sparc-sun-solaris2.8"...
(gdb) run -X
Starting program: /opt/web/apache_php/apache2/bin/httpd -X
[New LWP 1]
[New LWP 2]
[New LWP 3]
[New LWP 4]
[New LWP 5]
Program received signal SIGSEGV, Segmentation fault.
0xff0331f0 in strlen () from /usr/lib/libc.so.1
(gdb) bt
#0 0xff0331f0 in strlen () from /usr/lib/libc.so.1
#1 0xfe1e5918 in _oci_close_session (session=0x313bc8)
at /opt/web/apache_php/source/php-4.3.4/ext/oci8/oci8.c:2443
#2 0xfe1e0ca8 in _oci_session_list_dtor (rsrc=0x200e30)
at /opt/web/apache_php/source/php-4.3.4/ext/oci8/oci8.c:935
#3 0xfe36dcb0 in list_entry_destructor (ptr=0x200e30)
at /opt/web/apache_php/source/php-4.3.4/Zend/zend_list.c:177
#4 0xfe36aa64 in zend_hash_apply_deleter (ht=0xfe3e13fc, p=0x2017b0)
at /opt/web/apache_php/source/php-4.3.4/Zend/zend_hash.c:608
#5 0xfe36ae04 in zend_hash_graceful_reverse_destroy (ht=0xfe3e13fc)
at /opt/web/apache_php/source/php-4.3.4/Zend/zend_hash.c:674
#6 0xfe36dee0 in zend_destroy_rsrc_list (ht=0xfe3e13fc)
at /opt/web/apache_php/source/php-4.3.4/Zend/zend_list.c:233
#7 0xfe3501dc in shutdown_executor ()
at /opt/web/apache_php/source/php-4.3.4/Zend/zend_execute_API.c:213
#8 0xfe3612f8 in zend_deactivate ()
at /opt/web/apache_php/source/php-4.3.4/Zend/zend.c:665
#9 0xfe306904 in php_request_shutdown (dummy=0x0)
at /opt/web/apache_php/source/php-4.3.4/main/main.c:998
#10 0xfe383be8 in php_apache_request_dtor (r=0x187dd0)
at
/opt/web/apache_php/source/php-4.3.4/sapi/apache2handler/sapi_apache2.c:449
#11 0xfe3840b8 in php_handler (r=0x187dd0)
---Type <return> to continue, or q <return> to quit---
at
/opt/web/apache_php/source/php-4.3.4/sapi/apache2handler/sapi_apache2.c:553
#12 0x0004a37c in ap_run_handler (r=0x187dd0) at config.c:195 #13
0x0004a950 in ap_invoke_handler (r=0x187dd0) at config.c:401 #14
0x00037d60 in ap_process_request (r=0x187dd0) at http_request.c:288 #15
0x00033274 in ap_process_http_connection (c=0x169220) at http_core.c:293
#16 0x00055740 in ap_run_process_connection (c=0x169220) at
connection.c:85 #17 0x00048b78 in child_main (child_num_arg=1470896) at
prefork.c:694 #18 0x00048d70 in make_child (s=0x9bb80, slot=0) at
prefork.c:734 #19 0x00048dfc in startup_children (number_to_start=4) at
prefork.c:806 #20 0x0004962c in ap_mpm_run (_pconf=0x1, plog=0xd1558,
s=0x9bb80)
at prefork.c:1022
#21 0x0004f23c in main (argc=2, argv=0xffbefd1c) at main.c:660
(gdb)
LOG ENTRY IN APACHE
----------------------
websrv01:/opt/web/apache_php/apache/logs% grep Segment error_log [Thu Nov
20 20:31:59 2003] [error] [client 200.30.7.100] Segmentation Fault - core
dumped [Thu Nov 20 20:33:46 2003] [error] [client 200.30.7.100]
Segmentation Fault - core dumped [Thu Nov 20 20:33:55 2003] [error]
[client 200.30.7.100] Segmentation Fault - core dumped [Thu Nov 20
20:47:37 2003] [error] [client 200.30.7.100] Segmentation Fault - core
dumped [Sun Nov 23 19:55:45 2003] [notice] child pid 4946 exit signal
Segmentation fault (11) [Sun Nov 23 19:56:04 2003] [notice] child pid 6151
exit signal Segmentation fault (11) [Sun Nov 23 19:58:31 2003] [notice]
child pid 6536 exit signal Segmentation fault (11) [Sun Nov 23 20:05:13
2003] [notice] child pid 7172 exit signal Segmentation fault (11) [Mon Nov
24 13:39:02 2003] [notice] child pid 27426 exit signal Segmentation fault
(11)
--
Edit bug report at http://bugs.php.net/?id=26393&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=26393&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=26393&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=26393&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=26393&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=26393&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=26393&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=26393&r=support
Expected behavior: http://bugs.php.net/fix.php?id=26393&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=26393&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=26393&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=26393&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26393&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=26393&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=26393&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=26393&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=26393&r=float
