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Bug #18626 socket functions crash apache
Submitted: 2002-07-29 13:41 UTC Modified: 2002-08-20 16:15 UTC
From: Assigned:
Status: Closed Package: Sockets related
PHP Version: 4CVS-2002-07-29 OS: linux
Private report: No CVE-ID: None
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 [2002-07-29 13:41 UTC]

the following script crashes (segfaults) apache from time to time (1-2 out of 10). No idea what's wrong. The scripts works fine with PHP 4.2.2. backtrace appended.

System Info

- latest CVS
- Linux 2.4.18
- Apache 1.3.26



$url = parse_url($_GET["URL"]);
$url["host"] = "";
$url["path"] = "/";
header("Content-type: text/xml");
$fp = fsockopen ($url["host"], 80, $errno, $errstr, 30);
fputs ($fp, "GET ".$url["path"]." HTTP/1.0\r\nHost: ".$url["host"]."\r\n\r\n");
while (!feof($fp)) {
	$line =  fgets ($fp,128);
	echo $line;
fclose ($fp);


#0  0x401159e0 in free () from /lib/
#1  0x40115983 in free () from /lib/
#2  0x4030a1e5 in _efree (ptr=0x8195214) at /opt/cvs/php4.3/Zend/zend_alloc.c:235
#3  0x402f8a0b in sapi_send_headers () at /opt/cvs/php4.3/main/SAPI.c:719
#4  0x40296c30 in php_header () at /opt/cvs/php4.3/ext/standard/head.c:57
#5  0x402ffc4b in php_ub_body_write (str=0x819785c "HTTP/1.0 200 OK\r\n", str_length=17)
    at /opt/cvs/php4.3/main/output.c:486
#6  0x402ff35e in php_body_write (str=0x819785c "HTTP/1.0 200 OK\r\n", str_length=17)
    at /opt/cvs/php4.3/main/output.c:101
#7  0x402f3429 in php_body_write_wrapper (str=0x819785c "HTTP/1.0 200 OK\r\n", str_length=17)
    at /opt/cvs/php4.3/main/main.c:810
#8  0x40318280 in zend_print_zval_ex (write_func=0x402f3408 <php_body_write_wrapper>, expr=0x8199ee4, 
    indent=0) at /opt/cvs/php4.3/Zend/zend.c:187
#9  0x40318221 in zend_print_zval (expr=0x8199ee4, indent=0) at /opt/cvs/php4.3/Zend/zend.c:168
#10 0x40317eac in zend_print_variable (var=0x8199ee4) at /opt/cvs/php4.3/Zend/zend_variables.c:138
#11 0x40326ccb in execute (op_array=0x819241c) at /opt/cvs/php4.3/Zend/zend_execute.c:1220
#12 0x403191ae in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /opt/cvs/php4.3/Zend/zend.c:810
#13 0x402f4706 in php_execute_script (primary_file=0xbffff868) at /opt/cvs/php4.3/main/main.c:1398
#14 0x4033108e in apache_php_module_main (r=0x818ec84, display_source_mode=0)
    at /opt/cvs/php4.3/sapi/apache/sapi_apache.c:55
#15 0x40331bae in send_php (r=0x818ec84, display_source_mode=0, filename=0x0)
    at /opt/cvs/php4.3/sapi/apache/mod_php4.c:553
#16 0x40331c12 in send_parsed_php (r=0x818ec84) at /opt/cvs/php4.3/sapi/apache/mod_php4.c:568
#17 0x08073c59 in ap_invoke_handler ()
#18 0x0808916f in process_request_internal ()
#19 0x080891d6 in ap_process_request ()
#20 0x0807fe66 in child_main ()
#21 0x08080021 in make_child ()
#22 0x0808019c in startup_children ()
#23 0x0808082d in standalone_main ()
#24 0x0808108c in main ()
#25 0x400c014f in __libc_start_main () from /lib/


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 [2002-08-20 16:15 UTC]
It works with latest CVS...

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