[PATCH v3 09/10] malloc: check result of elem_start_pt

[okaya at kernel.org]

From: Sinan Kaya <okaya at kernel.org>

In malloc_elem_alloc result of call to elem_start_pt is dereferenced
here and may be null.

Signed-off-by: Sinan Kaya <okaya at kernel.org>
---
 lib/eal/common/malloc_elem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/eal/common/malloc_elem.c b/lib/eal/common/malloc_elem.c
index 8f49812846..26296f2dba 100644
--- a/lib/eal/common/malloc_elem.c
+++ b/lib/eal/common/malloc_elem.c
@@ -435,6 +435,9 @@ malloc_elem_alloc(struct malloc_elem *elem, size_t size, unsigned align,
 {
 	struct malloc_elem *new_elem = elem_start_pt(elem, size, align, bound,
 			contig);
+	if (new_elem == NULL)
+		return NULL;
+
 	const size_t old_elem_size = (uintptr_t)new_elem - (uintptr_t)elem;
 	const size_t trailer_size = elem->size - old_elem_size - size -
 		MALLOC_ELEM_OVERHEAD;
-- 
2.25.1