PHP :: Bug #62839 :: curl_copy_handle segfault with CURLOPT

PHP :: Bug #62839 :: curl_copy_handle segfault with CURLOPT_FILE

Bug #62839	curl_copy_handle segfault with CURLOPT_FILE
Submitted:	2012-08-16 13:58 UTC	Modified:	2012-08-16 18:53 UTC
From:	martin at mixotv dot com	Assigned:	pierrick (profile)
Status:	Closed	Package:	cURL related
PHP Version:	5.4.5	OS:	Linux 3.4.8-1
Private report:	No	CVE-ID:	None

[2012-08-16 13:58 UTC] martin at mixotv dot com

Description:
------------
When using cURL with the option CURLOPT_FILE (write the result of the curl request in a file), curl_copy_handle() causes a SEGFAULT.

I use the packages from Archlinux repository (php, libcurl 7.27.0 x86_64).

I get the same results with a current ubuntu distribution.

Test script:
---------------
<?php

$curl = curl_init();

$fd = fopen('/tmp/test', 'wb');
curl_setopt($curl, CURLOPT_FILE, $fd);

$copy = curl_copy_handle($curl);

var_dump($copy);

curl_close($copy);
curl_close($curl);
fclose($fd);

Expected result:
----------------
no segfault

Actual result:
--------------
segfault:

#0  0x00007ffff5ca6f46 in ?? () from /usr/lib/php/modules/curl.so
#1  0x00007ffff5ec0f0d in xdebug_execute_internal () from /usr/lib/php/modules/xdebug.so
#2  0x00000000006dac6d in ?? ()
#3  0x00000000006946ff in execute ()
#4  0x00007ffff5ec1392 in xdebug_execute () from /usr/lib/php/modules/xdebug.so
#5  0x00000000006355d9 in zend_execute_scripts ()
#6  0x00000000005d5393 in php_execute_script ()
#7  0x00000000006dd433 in ?? ()
#8  0x000000000042601a in ?? ()
#9  0x00007ffff692d725 in __libc_start_main () from /lib/libc.so.6
#10 0x00000000004260ad in _start ()

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[2012-08-16 14:17 UTC] martin at mixotv dot com

-Status: Feedback +Status: Open

[2012-08-16 14:17 UTC] martin at mixotv dot com

Hi Felipe,

Here is the backtrace without Xdebug:

Program received signal SIGSEGV, Segmentation fault.
#0  0x00007ffff5ed9f46 in ?? () from /usr/lib/php/modules/curl.so
#1  0x00000000006dae02 in ?? ()
#2  0x00000000006946ff in execute ()
#3  0x00000000006355d9 in zend_execute_scripts ()
#4  0x00000000005d5393 in php_execute_script ()
#5  0x00000000006dd433 in ?? ()
#6  0x000000000042601a in ?? ()
#7  0x00007ffff692d725 in __libc_start_main () from /lib/libc.so.6
#8  0x00000000004260ad in _start ()

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