#33560 [Opn->Fbk]: curl_multi handle not being properly destroyed - seg faults if reused

ID: 33560 Updated by: sniper@php.net Reported By: eja40 at cam dot ac dot uk -Status: Open +Status: Feedback Bug Type: cURL related Operating System: Redhat 9 PHP Version: 5.0.4 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2005-07-04 03:38:56] eja40 at cam dot ac dot uk Description: ------------ Irregularly, multi-curl functions will give a seg fault. Appears to be due to reuse of handles. Reproduce code: --------------- $mh = curl_multi_init(); unset($this->connections); // setup connections here // exec curl connections here, get data out // then remove the connections using this: curl_multi_remove_handle($mh,$this->connections[$i]); curl_multi_close($mh); When I establish a second round of connections using the same variable name, $this->connections[$i] - there can be a segmentation fault. It crashes on the curl_setopt line of this: $this->connections[$i] = curl_init($url['URL']); curl_setopt($this->connections[$i], CURLOPT_RETURNTRANSFER,1); Expected result: ---------------- Shouldn't crash! Appears that it can be worked around by adding an additional unset($this->connections); directly after curl_multi_close($mh); Actual result: -------------- Segmentation fault ( - erratically reproducible with my very complicated code).. Backtrace: #0 0x080a0529 in zif_curl_setopt (ht=3, return_value=0x85feb9c, this_ptr=0x0, return_value_used=0) at /home/admin/php-5.0.4/ext/curl/interface.c:1040 #1 0x08201746 in zend_do_fcall_common_helper (execute_data=0xbfff9c90, opline=0x85c9f20, op_array=0x85be5f4) at /home/admin/php-5.0.4/Zend/zend_execute.c:2727 #2 0x081fed42 in execute (op_array=0x85be5f4) at /home/admin/php-5.0.4/Zend/zend_execute.c:1406 #3 0x0820155e in zend_do_fcall_common_helper (execute_data=0xbfffb700, opline=0x85c33e0, op_array=0x85bbb1c) at /home/admin/php-5.0.4/Zend/zend_execute.c:2756 #4 0x081fed42 in execute (op_array=0x85bbb1c) at /home/admin/php-5.0.4/Zend/zend_execute.c:1406 #5 0x0820155e in zend_do_fcall_common_helper (execute_data=0xbfffbb00, opline=0x85ba58c, op_array=0x85b57d4) at /home/admin/php-5.0.4/Zend/zend_execute.c:2756 #6 0x081fed42 in execute (op_array=0x85b57d4) at /home/admin/php-5.0.4/Zend/zend_execute.c:1406 #7 0x081e4c17 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/admin/php-5.0.4/Zend/zend.c:1069 #8 0x081b793b in php_execute_script (primary_file=0xbfffdec0) at /home/admin/php-5.0.4/main/main.c:1632 #9 0x08208060 in main (argc=3, argv=0xbfffdf44) at /home/admin/php-5.0.4/sapi/cli/php_cli.c:946 #10 0x42015704 in __libc_start_main () from /lib/tls/libc.so.6 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33560&edit=1