Edit report at http://bugs.php.net/bug.php?id=52389&edit=1
ID: 52389 Updated by: fel...@php.net Reported by: miroslav dot zacek at skype dot net Summary: Memory (de)allocation problem for pgsql notices -Status: Open +Status: Feedback Type: Bug Package: PostgreSQL related Operating System: Linux (Kubuntu) PHP Version: 5.3.2 Block user comment: N New Comment: Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2010-07-22 05:08:28] ahar...@php.net The original description without the double encoding: In the ext/pgsql.c pgsql_globals->notices structure is allocated as persistent but individual messages non persistent. Thus the destructor _php_pgsql_notice_ptr_dtor happens to try to free memory that was already freed by the garbage collector and the thread exits with segmentation fault. Program received signal SIGSEGV, Segmentation fault. 0x00007ffff3cd3013 in _zend_mm_free_int (heap=0x7ffff844b5c0, p=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2018 2018 if (ZEND_MM_IS_FREE_BLOCK(next_block)) { (gdb) backtrace #0 0x00007ffff3cd3013 in _zend_mm_free_int (heap=0x7ffff844b5c0, p=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2018 #1 0x00007ffff3cd3de1 in _efree (ptr=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2351 #2 0x00007fffeb4d3419 in _php_pgsql_notice_ptr_dtor (ptr=0x7ffff9396708) at /tmp/pgsql/pgsql.c:841 ------------------------------------------------------------------------ [2010-07-21 15:50:43] miroslav dot zacek at skype dot net Description: ------------ In the ext/pgsql.c pgsql_globals->notices structure is allocated as persistent but individual messages non persistent. Thus the destructor _php_pgsql_notice_ptr_dtor happens to try to free memory that was already freed by the garbage collector and the thread exits with segmentation fault. Program received signal SIGSEGV, Segmentation fault. 0x00007ffff3cd3013 in _zend_mm_free_int (heap=0x7ffff844b5c0, p=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2018 2018 if (ZEND_MM_IS_FREE_BLOCK(next_block)) { (gdb) backtrace #0 0x00007ffff3cd3013 in _zend_mm_free_int (heap=0x7ffff844b5c0, p=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2018 #1 0x00007ffff3cd3de1 in _efree (ptr=0x7ffff9397390) at /usr/src/php_no_suhosin/php5-5.3.2/Zend/zend_alloc.c:2351 #2 0x00007fffeb4d3419 in _php_pgsql_notice_ptr_dtor (ptr=0x7ffff9396708) at /tmp/pgsql/pgsql.c:841 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52389&edit=1
