Bug #68937 [Opn]: Segfault in curl_multi_exec

Edit report at https://bugs.php.net/bug.php?id=68937&edit=1 ID: 68937 Updated by: laruence@php.net Reported by: danack@php.net Summary: Segfault in curl_multi_exec Status: Open Type: Bug Package: cURL related Operating System: Centos 64bit PHP Version: master-Git-2015-01-28 (Git) Block user comment: N Private report: N New Comment: damned, composer is blocked in china.... Previous Comments: ------------------------------------------------------------------------ [2015-01-29 12:55:13] danack@php.net mbeccati, > Also, with 5.6 curl_read is called with: > "PUT /rpm.example.com/LICENSE.md HTTP/1.1\r\nHost: s3-eu-..." > > whereas master's curl_read gets "PUT / HTTP/1.1\r\nHost: s3-eu-..." That would explain the large number of errors related to URLs that occur when running the test suite for the AWS sdk. The test suite for the AWS sdk is in that repo, but is only available if you 'git clone' it, as the zip archive has the test suite excluded, and is run with 'make test'. It has no errors on 5.6 and lots of seemingly related ones in 7. ------------------------------------------------------------------------ [2015-01-29 12:49:55] danack@php.net Hi Laruence, No, I'm not able to reduce it to a simple script. This is testing the Amazon AWS SDK, which is massive and I don't think it would be trivial to reproduce this bug outside of that SDK. However there are instructions on how to setup the example in the test script: // Download https://github.com/aws/aws-sdk-php and stick this file // in the root directory and do a composer update. ------------------------------------------------------------------------ [2015-01-29 11:38:24] laruence@php.net are you able to refine it to a simple script? I can not find the "autoload.php" in your example thanks ------------------------------------------------------------------------ [2015-01-29 09:24:38] mbeccati@php.net It looks like ch->handlers->read->res is NULL inside curl_read Also, with 5.6 curl_read is called with: "PUT /rpm.example.com/LICENSE.md HTTP/1.1\r\nHost: s3-eu-..." whereas master's curl_read gets "PUT / HTTP/1.1\r\nHost: s3-eu-..." ------------------------------------------------------------------------ [2015-01-28 20:23:58] danack@php.net Description: ------------ Segfault occurs in curl_multi_exec when testing simple script. Test script: --------------- Test script here: https://gist.github.com/Danack/ce6be556842d645ab0ce It uses the Amazon PHP sdk. Expected result: ---------------- Code should not segfault Actual result: -------------- ==8799== Invalid read of size 4 ==8799== at 0x56BF53: curl_read (zend_types.h:696) ==8799== by 0x5C29F26: Curl_fillreadbuffer (in /usr/lib64/libcurl.so.4.1.1) ==8799== by 0x5C2B04B: Curl_readwrite (in /usr/lib64/libcurl.so.4.1.1) ==8799== by 0x5C31745: ??? (in /usr/lib64/libcurl.so.4.1.1) ==8799== by 0x5C31DB2: curl_multi_perform (in /usr/lib64/libcurl.so.4.1.1) ==8799== by 0x573369: zif_curl_multi_exec (multi.c:222) ==8799== by 0x8C600B: ZEND_DO_FCALL_SPEC_HANDLER (zend_vm_execute.h:596) ==8799== by 0x86F39F: execute_ex (zend_vm_execute.h:352) ==8799== by 0x824F0B: zend_call_function (zend_execute_API.c:835) ==8799== by 0x853E7C: zend_call_method (zend_interfaces.c:101) ==8799== by 0x86741F: zend_std_call_user_call (zend_object_handlers.c:912) ==8799== by 0x8C600B: ZEND_DO_FCALL_SPEC_HANDLER (zend_vm_execute.h:596) ==8799== Address 0x0 is not stack'd, malloc'd or (recently) free'd ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68937&edit=1