[malloc] Sanity check parameters to alloc_memblock() and free_memblock()
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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@ -237,6 +237,10 @@ void * alloc_memblock ( size_t size, size_t align, size_t offset ) {
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struct memory_block *post;
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struct memory_block *ptr;
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/* Sanity checks */
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assert ( size != 0 );
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assert ( ( align == 0 ) || ( ( align & ( align - 1 ) ) == 0 ) );
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valgrind_make_blocks_defined();
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/* Round up size to multiple of MIN_MEMBLOCK_SIZE and
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@ -338,6 +342,7 @@ void free_memblock ( void *ptr, size_t size ) {
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/* Round up size to match actual size that alloc_memblock()
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* would have used.
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*/
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assert ( size != 0 );
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size = ( size + MIN_MEMBLOCK_SIZE - 1 ) & ~( MIN_MEMBLOCK_SIZE - 1 );
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freeing = ptr;
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VALGRIND_MAKE_MEM_DEFINED ( freeing, sizeof ( *freeing ) );
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@ -444,6 +449,7 @@ void * realloc ( void *old_ptr, size_t new_size ) {
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data );
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VALGRIND_MAKE_MEM_DEFINED ( old_block, offsetof ( struct autosized_block, data ) );
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old_total_size = old_block->size;
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assert ( old_total_size != 0 );
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old_size = ( old_total_size -
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offsetof ( struct autosized_block, data ) );
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memcpy ( new_ptr, old_ptr,
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