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Fixed bug #54268 (Double free when destroy_zend_class fails)

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This commit is contained in:
Dmitry Stogov 2011-04-15 12:43:20 +00:00
parent 833ec62d7c
commit 92e5b10c41
3 changed files with 45 additions and 10 deletions
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35
Zend/tests/bug54268.phpt Normal file
View File

@ -0,0 +1,35 @@
--TEST--
Bug #54268 (Double free when destroy_zend_class fails)
--INI--
memory_limit=8M
--SKIPIF--
<?php
$zend_mm_enabled = getenv("USE_ZEND_ALLOC");
if ($zend_mm_enabled === "0") {
die("skip Zend MM disabled");
}
?>
--FILE--
<?php
class DestructableObject
{
public function __destruct()
{
DestructableObject::__destruct();
}
}
class DestructorCreator
{
public function __destruct()
{
$this->test = new DestructableObject;
}
}
class Test
{
public static $mystatic;
}
$x = new Test();
Test::$mystatic = new DestructorCreator();
--EXPECTF--
Fatal error: Allowed memory size of %s bytes exhausted%s(tried to allocate %s bytes) in %s on line %d

2
Zend/zend_execute_API.c
View File

@ -296,7 +296,9 @@ void shutdown_executor(TSRMLS_D) /* {{{ */
zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
}
zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
} zend_end_try();
zend_try {
zend_vm_stack_destroy(TSRMLS_C);
zend_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);

18
Zend/zend_hash.c
View File

@ -545,9 +545,15 @@ ZEND_API void zend_hash_clean(HashTable *ht)
IS_CONSISTENT(ht);
SET_INCONSISTENT(HT_CLEANING);
p = ht->pListHead;
memset(ht->arBuckets, 0, ht->nTableSize*sizeof(Bucket *));
ht->pListHead = NULL;
ht->pListTail = NULL;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->pInternalPointer = NULL;
while (p != NULL) {
q = p;
p = p->pListNext;
@ -559,14 +565,6 @@ ZEND_API void zend_hash_clean(HashTable *ht)
}
pefree(q, ht->persistent);
}
memset(ht->arBuckets, 0, ht->nTableSize*sizeof(Bucket *));
ht->pListHead = NULL;
ht->pListTail = NULL;
ht->nNumOfElements = 0;
ht->nNextFreeElement = 0;
ht->pInternalPointer = NULL;
SET_INCONSISTENT(HT_OK);
}
/* This function is used by the various apply() functions.