Bug #52284 [Com]: Reproducible crash using curl_multi functions with FTP

Edit report at http://bugs.php.net/bug.php?id=52284&edit=1 ID: 52284 Comment by: profy dot net at gmail dot com Reported by: aharvey@php.net Summary: Reproducible crash using curl_multi functions with FTP Status: Verified Type: Bug Package: cURL related Operating System: Ubuntu 10.04 (and others) PHP Version: 5.3SVN-2010-07-08 (SVN) Block user comment: N New Comment: Reproduced every time when call test script. Test script: --------------- <?php function multi_request($urls, $url_options = array()) { $mh = curl_multi_init(); foreach ($urls as $id => $url) { $curly[$id] = curl_init(); curl_setopt($curly[$id], CURLOPT_URL, $url); curl_setopt($curly[$id], CURLOPT_RETURNTRANSFER, true); // I've add this opt to speed up request, bug appearing with or without this line curl_setopt($curly[$id], CURLOPT_NOBODY, true); curl_multi_add_handle($mh, $curly[$id]); } $running = null; do { $status = curl_multi_exec($mh, $running); usleep(1000); } while($status == CURLM_CALL_MULTI_PERFORM || $running); foreach ($curly as $id => $c) { $result[$id] = curl_multi_getcontent($c); curl_multi_remove_handle($mh, $c); curl_close($c); } curl_multi_close($mh); return $result; } $urls = array( "4358521" => "ftp://ftp.ea.com/pub/ea/patches/nfs-underground/pc/en-uk/NFSU_EUROPE_PATCH_4.exe", "7458288" => "ftp://ftp.nero.com/software/plugins/WMAPlugin20937.exe", ); echo "<pre>"; print_R(multi_request($urls)); echo "</pre>"; Previous Comments: ------------------------------------------------------------------------ [2010-07-27 04:57:11] srinatar@php.net able to reproduce this issue. here is the stack trace: (gdb) where #0 0x0000000000520a58 in curl_write_header (data=0x18d3b78 "221 Goodbye.\r\nomplete.\r", size=1, nmemb=14, ctx=0x1876e58) at /home/sriramn/dev/php-src/branches/PHP_5_3/ext/curl/interface.c:1123 #1 0x00007f106e187c26 in ?? () from /usr/lib/libcurl.so.4 #2 0x00007f106e1885ad in ?? () from /usr/lib/libcurl.so.4 #3 0x00007f106e18b2ed in ?? () from /usr/lib/libcurl.so.4 #4 0x00007f106e18c64f in ?? () from /usr/lib/libcurl.so.4 #5 0x00007f106e18c792 in ?? () from /usr/lib/libcurl.so.4 #6 0x00007f106e18e9b2 in ?? () from /usr/lib/libcurl.so.4 #7 0x00007f106e1a4813 in curl_multi_cleanup () from /usr/lib/libcurl.so.4 #8 0x0000000000527208 in _php_curl_multi_close (rsrc=0x1871970) at /home/sriramn/dev/php-src/branches/PHP_5_3/ext/curl/multi.c:327 #9 0x00000000007f246e in list_entry_destructor (ptr=0x1871970) at /home/sriramn/dev/php-src/branches/PHP_5_3/Zend/zend_list.c:184 #10 0x00000000007efa3b in zend_hash_del_key_or_index (ht=0xe1eaf0, arKey=0x0, nKeyLength=0, h=4, flag=1) at /home/sriramn/dev/php-src/branches/PHP_5_3/Zend/zend_hash.c:497 #11 0x00000000007f1fa0 in _zend_list_delete (id=4) at /home/sriramn/dev/php-src/branches/PHP_5_3/Zend/zend_list.c:58 #12 0x00000000005271d5 in zif_curl_multi_close (ht=1, return_value=0x187a140, return_value_ptr=0x0, this_ptr=0x0, return_value_used=0) at /home/sriramn/dev/php-src/branches/PHP_5_3/ext/curl/multi.c:319 ------------------------------------------------------------------------ [2010-07-21 13:11:10] profy dot net at gmail dot com Sorry for bothering you, but I see now that bug still exists. My code already had a workaround for that issue and I not disabled it when testing against latest version (5.3.3RC3 and libcurl 7.21.0). Now I&#39;ve tested again with truly parallel 5 ftp requests and it is still failing as it was with PHP 5.2.13 on Win XP SP3 ------------------------------------------------------------------------ [2010-07-21 12:39:00] pajoye@php.net Was a libCurl issue, fixed in latest release. ------------------------------------------------------------------------ [2010-07-21 12:31:14] profy dot net at gmail dot com I&#38;#38;#39;ve tested with latest PHP5.3.3RC3 downloaded from http://windows.php.net/qa/ and it works fine now with 5 FTP and 3 HTTP parallel requests using curl_multi_* functions. This request failed before. cURL version is 7.21.0. It seems bug is fixed in latest curl. ------------------------------------------------------------------------ [2010-07-21 11:07:25] profy dot net at gmail dot com Curl version: libcurl/7.20.0 OpenSSL/0.9.8h zlib/1.2.3 ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=52284 -- Edit this bug report at http://bugs.php.net/bug.php?id=52284&edit=1