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efl/eina: detect when freeing pointer inside an allocated memory. 

SVN revision: 83195
This commit is contained in:
Cedric BAIL 2013-01-24 02:44:14 +00:00
parent 3cfd345a91
commit b1d856bc8b
1 changed files with 11 additions and 3 deletions
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14
src/modules/eina/mp/chained_pool/eina_chained_mempool.c
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@ -211,15 +211,23 @@ _eina_chained_mempool_free_in(Chained_Mempool *pool, Chained_Pool *p, void *ptr)
// pool mem base
pmem = (void *)(((unsigned char *)p) + sizeof(Chained_Pool));
#ifdef DEBUG
// is it in pool mem?
if (ptr < pmem)
{
#ifdef DEBUG
INF("%p is inside the private part of %p pool from %p Chained_Mempool (could be the sign of a buffer underrun).", ptr, p, pool);
#endif
INF("%p is inside the private part of %p pool from %p '%s' Chained_Mempool (could be the sign of a buffer underrun).", ptr, p, pool, pool->name);
return EINA_FALSE;
}
// is it really a pointer returned by malloc
if ((((unsigned char *)ptr) - (unsigned char *)(p + 1)) % pool->item_alloc)
{
INF("%p is %i bytes inside a pointer served by %p '%s' Chained_Mempool (You are freeing the wrong pointer man !). %i",
ptr, ((((unsigned char *)ptr) - (unsigned char *)(p + 1)) % pool->item_alloc), pool, pool->name);
return EINA_FALSE;
}
#endif
// freed node points to prev free node
eina_trash_push(&p->base, ptr);
// next free node is now the one we freed