Bug #64177 [Opn->Asn]: curl_multi_* crash with libcurl 7.29.0

Edit report at https://bugs.php.net/bug.php?id=64177&edit=1 ID: 64177 Updated by: pajoye@php.net Reported by: ab@php.net Summary: curl_multi_* crash with libcurl 7.29.0 -Status: Open +Status: Assigned Type: Bug Package: cURL related Operating System: any PHP Version: Irrelevant -Assigned To: +Assigned To: ab Block user comment: N Private report: N New Comment: This commit may fix this regression: https://github.com/bagder/curl/commit/da3fc1ee91de656a30f3a12de394bcba55119872 @a please patch our libcurl and test again :) Previous Comments: ------------------------------------------------------------------------ [2013-02-08 23:31:40] ab@php.net Description: ------------ Perhaps that's a libcurl bug, but the curl extension multi functionality consistently fails with 7.29.0 . For instance this snippet based on ext/curl/tests/curl_multi_init_basic.phpt $mh = curl_multi_init(); curl_multi_close($mh); Basically it does crash always if no handles were added between init and cleanup. Ther corresponding snippet in c #include <curl/curl.h> int main(void) { CURLM *multi_handle; multi_handle = curl_multi_init(); curl_multi_cleanup(multi_handle); return 0; } That snippets do successfully work with the libcurl versions prior to 7.29.0 . The issue introduces itself starting with this commit in libcurl included in 7.29.0 https://github.com/bagder/curl/commit/c43127414d89ccb9ef6517081f68986d991bcfb3#L10R1776 And the commit is related to a big change explaned here http://daniel.haxx.se/blog/2013/01/17/internally-were-all-multi-now/ The issue is consistently reproduceable on linux and windows through all PHP versions. Expected result: ---------------- no crash Actual result: -------------- #0 _php_curl_multi_close (rsrc=0xb707259c) at /home/weltling/dws/src/php-5.5-nts/ext/curl/multi.c:349 #1 0x085902ff in list_entry_destructor (ptr=0xb707259c) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_list.c:183 #2 0x0858d72e in zend_hash_del_key_or_index (ht=0x8aa7158, arKey=0x0, nKeyLength=0, h=4, flag=1) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_hash.c:531 #3 0x0858ffed in _zend_list_delete (id=4) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_list.c:57 #4 0x081d1d8b in zif_curl_multi_close (ht=1, return_value=0xb7070b3c, return_value_ptr=0x0, this_ptr=0x0, return_value_used=0) at /home/weltling/dws/src/php-5.5-nts/ext/curl/multi.c:330 #5 0x085b7f4b in zend_do_fcall_common_helper_SPEC (execute_data=0xb70540c4) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_vm_execute.h:542 #6 0x085bdc7b in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0xb70540c4) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_vm_execute.h:2293 #7 0x085b695c in execute_ex (execute_data=0xb70540c4) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_vm_execute.h:356 #8 0x085b7023 in zend_execute (op_array=0xb70713a8) at /home/weltling/dws/src/php-5.5-nts/Zend/zend_vm_execute.h:381 #9 0x0857ed2d in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/weltling/dws/src/php-5.5-nts/Zend/zend.c:1316 #10 0x085023ec in php_execute_script (primary_file=0xbfffdff0) at /home/weltling/dws/src/php-5.5-nts/main/main.c:2479 #11 0x086a7d59 in do_cli (argc=2, argv=0xbffff284) at /home/weltling/dws/src/php-5.5-nts/sapi/cli/php_cli.c:988 #12 0x086a8ec3 in main (argc=2, argv=0xbffff284) at /home/weltling/dws/src/php-5.5-nts/sapi/cli/php_cli.c:1364 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64177&edit=1