Bug #72862 [NEW]: segfault using prepared statements on stored procedures that use a cursor

From: nuke48386 at yahoo dot com Operating system: Debian Wheezy i686 PHP version: 5.6.24 Package: MySQLi related Bug Type: Bug Bug description:segfault using prepared statements on stored procedures that use a cursor Description: ------------ A prepared statement that calls a stored procedure that uses a cursor causes the PHP process to segfault. The issue is in the mysqlnd module. Test script: --------------- I have posted an SQL file for creating a test database and stored procedure, and a PHP script that together can reproduce the bug. Together they are more than 20 lines, so they can be found in the issue I opened with the folks at DotDeb: https://github.com/gplessis/dotdeb-php/issues/145 Actual result: -------------- backtrace: Starting program: /usr/bin/php test.php [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. mysqlnd_fetch_stmt_row_cursor (result=0xb7621088, param=0xb7621a64, flags=2, fetched_anything=0xbfffba3f "\267\364/3\267\210\020b\267") at /usr/src/builddir/ext/mysqlnd/mysqlnd_ps.c:1022 1022 /usr/src/builddir/ext/mysqlnd/mysqlnd_ps.c: No such file or directory. #0 mysqlnd_fetch_stmt_row_cursor (result=0xb7621088, param=0xb7621a64, flags=2, fetched_anything=0xbfffba3f "\267\364/3\267\210\020b\267") at /usr/src/builddir/ext/mysqlnd/mysqlnd_ps.c:1022 #1 0xb73148d5 in php_mysqlnd_res_fetch_row_pub (result=0xb7621088, param=0xb7621a64, flags=2, fetched_anything=0xbfffba3f "\267\364/3\267\210\020b\267") at /usr/src/builddir/ext/mysqlnd/mysqlnd_result.c:1352 #2 0xb73173a6 in php_mysqlnd_res_fetch_into_pub (result=0xb7621088, flags=2, return_value=0xb7621a64, extension=MYSQLND_MYSQLI) at /usr/src/builddir/ext/mysqlnd/mysqlnd_result.c:1823 #3 0xb73171c5 in php_mysqlnd_res_fetch_all_pub (result=0xb7621088, flags=2, return_value=0xb7621a48) at /usr/src/builddir/ext/mysqlnd/mysqlnd_result.c:1893 #4 0xb67c6132 in zif_mysqli_fetch_all (ht=0, return_value=0xb7621a48, return_value_ptr=0xb76041a0, this_ptr=0xb761edb0, return_value_used=1) at /usr/src/builddir/ext/mysqli/mysqli_nonapi.c:385 #5 0x0842d376 in execute_internal (execute_data_ptr=execute_data_ptr@entry=0xb76042bc, fci=fci@entry=0x0, return_value_used=return_value_used@entry=1) at /usr/src/builddir/Zend/zend_execute.c:1527 #6 0x08371493 in dtrace_execute_internal (execute_data_ptr=0xb76042bc, fci=0x0, return_value_used=1) at /usr/src/builddir/Zend/zend_dtrace.c:97 #7 0x0842f9e7 in zend_do_fcall_common_helper_SPEC (execute_data=<optimized out>) at /usr/src/builddir/Zend/zend_vm_execute.h:560 #8 0x083f15e7 in execute_ex (execute_data=execute_data@entry=0xb76042bc) at /usr/src/builddir/Zend/zend_vm_execute.h:363 #9 0x08371359 in dtrace_execute_ex (execute_data=0xb76042bc) at /usr/src/builddir/Zend/zend_dtrace.c:73 #10 0x0842f162 in zend_execute (op_array=0xb761e5a4) at /usr/src/builddir/Zend/zend_vm_execute.h:388 #11 zend_execute (op_array=0xb761e5a4) at /usr/src/builddir/Zend/zend_vm_execute.h:383 #12 0x08384906 in zend_execute_scripts (type=type@entry=8, retval=retval@entry=0x0, file_count=file_count@entry=3) at /usr/src/builddir/Zend/zend.c:1341 #13 0x08319dae in php_execute_script (primary_file=primary_file@entry=0xbfffdf78) at /usr/src/builddir/main/main.c:2613 #14 0x08433379 in do_cli (argc=-1073750152, argc@entry=2, argv=0x7, argv@entry=0x89a0d88) at /usr/src/builddir/sapi/cli/php_cli.c:994 #15 0x080a5f43 in main (argc=2, argv=0x89a0d88) at /usr/src/builddir/sapi/cli/php_cli.c:1378 A debugging session is active. Inferior 1 [process 4588] will be killed. Quit anyway? (y or n) -- Edit bug report at https://bugs.php.net/bug.php?id=72862&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72862&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72862&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72862&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72862&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72862&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72862&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72862&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72862&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72862&r=support Expected behavior: https://bugs.php.net/fix.php?id=72862&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72862&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72862&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72862&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72862&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72862&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72862&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72862&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72862&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72862&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72862&r=mysqlcfg