From: [EMAIL PROTECTED]
Operating system: mandrake 8.2, 2.4.18-8.1mdk
PHP version: 4.3.0
PHP Bug Type: Reproducible crash
Bug description: fsockopen() crashes on 2 of 3 servers (w/ gdb trace)
Compiling 4.3.0 and php4-STABLE-200301222030 on 3 servers, one works and
two segfault. The simple script below illustrates the problem; on one
server it runs, on two it faults. The three servers are essentially
identical; php.ini on all are identical.
Build details and gdb backtrace are below. I also have fopen("http://";)
failing the same way, not surprising. The failure appears to be in DNS
resolution. Glad to supply more info as needed.
<?php
$fd = fsockopen("www.yahoo.com", 80, &$errno, &$errstr);
if( !$fd ) {
echo "yahoo not available";
exit();
} else {
fputs($fd,"GET / HTTP/1.0\r\n\r\n");
fputs($fd,"Host: $host\r\n\r\n");
while (!feof($fd)) {
echo fread($fd,16000);
}
fclose($fd);
}
?>
=================================================
php was built with the following options:
./configure \
--with-gd \
--with-mysql=/usr \
--with-exec-dir=/var/lib/php \
--with-java=/usr/local/jdk \
--enable-unified-odbc \
--enable-safe-mode=yes \
--enable-track-vars \
--enable-ftp \
--with-expat-dir=/usr \
--with-xml \
--with-dom=/usr \
--with-dom-xslt=/usr \
--with-dom-exslt=/usr \
--enable-xslt \
--with-xslt-sablot=/usr \
--with-sablot-js=/usr \
--with-zlib \
--with-ldap \
--with-openssl \
--disable-debug \
--disable-debugger \
--with-config-file-path=/etc/httpd/conf
The bind version on all servers is 8.3.3, patched with ISC patches prior
to 8.3.4 release from recent bugs.
=================================================
gdb run commands:
gdb stacktrace:(gdb) set args fsock_yahoo.php
(gdb) run
Starting program: /usr/local/bin/php fsock_yahoo.php
[New Thread 1024 (LWP 3639)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 3639)]
0x081335d5 in php_network_getaddresses (host=0x831c59c "www.yahoo.com",
sal=0xbfffc634) at /usr/local/php4/main/network.c:215
215 *(struct sockaddr_in *)*sap =
#0 0x081335d5 in php_network_getaddresses (host=0x831c59c
"www.yahoo.com",
sal=0xbfffc634) at /usr/local/php4/main/network.c:215
#1 0x08133810 in php_hostconnect (host=0x831c59c "www.yahoo.com",
port=80,
socktype=1, timeout=0xbfffc6b0) at /usr/local/php4/main/network.c:410
#2 0x08133b5f in _php_stream_sock_open_host (host=0x831c59c
"www.yahoo.com",
port=80, socktype=1, timeout=0xbfffc6b0, persistent_id=0x0)
at /usr/local/php4/main/network.c:619
#3 0x080ee025 in php_fsockopen_stream (ht=4, return_value=0x831c5dc,
this_ptr=0x0, return_value_used=1, persistent=0)
at /usr/local/php4/ext/standard/fsock.c:218
#4 0x080ee1ed in zif_fsockopen (ht=4, return_value=0x831c5dc,
this_ptr=0x0,
return_value_used=1) at /usr/local/php4/ext/standard/fsock.c:278
#5 0x0815d2d2 in execute (op_array=0x8322504)
at /usr/local/php4/Zend/zend_execute.c:1596
#6 0x0814cdf3 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /usr/local/php4/Zend/zend.c:864
#7 0x0812992b in php_execute_script (primary_file=0xbffff560)
at /usr/local/php4/main/main.c:1573
#8 0x08164488 in main (argc=2, argv=0xbffff604)
at /usr/local/php4/sapi/cli/php_cli.c:746
#9 0x405be280 in __libc_start_main () from /lib/libc.so.6
--
Edit bug report at http://bugs.php.net/?id=21829&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=21829&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=21829&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=21829&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=21829&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=21829&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=21829&r=support
Expected behavior: http://bugs.php.net/fix.php?id=21829&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=21829&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=21829&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=21829&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=21829&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=21829&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=21829&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=21829&r=gnused
