From: anton at 310 dot ru
Operating system: linux x86_64 kernel 2.6.9
PHP version: 5.0.5
PHP Bug Type: Reproducible crash
Bug description: fix Segmentation fault
Description:
------------
fix Segmentation fault
Reproduce code:
---------------
--- zend_alloc.c.orig 2005-08-23 22:11:22.000000000 +0400
+++ zend_alloc.c 2005-09-04 16:57:33.000000000 +0400
@@ -103,7 +103,8 @@
#define REMOVE_POINTER_FROM_LIST(p) \
if (p==AG(head)) {
\
AG(head) = p->pNext; \
- } else {
\
+ } else { \
+ if(p->pLast) \
p->pLast->pNext = p->pNext; \
}
\
if (p->pNext) {
\
@@ -248,6 +249,10 @@
ZEND_API void _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
zend_mem_header *p = (zend_mem_header *) ((char *)ptr -
sizeof(zend_mem_header) - MEM_HEADER
_PADDING);
+
+ if(!ptr)
+ return;
+
DECLARE_CACHE_VARS();
TSRMLS_FETCH();
--
Edit bug report at http://bugs.php.net/?id=34408&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34408&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34408&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34408&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34408&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34408&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34408&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34408&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34408&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34408&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34408&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34408&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34408&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34408&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34408&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34408&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34408&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34408&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34408&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34408&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34408&r=mysqlcfg
