Commit af0cd5a7 authored by WANG Cong's avatar WANG Cong Committed by Linus Torvalds

mm/sparse.c: check the return value of sparse_index_alloc()

Since sparse_index_alloc() can return NULL on memory allocation failure,
we must deal with the failure condition when calling it.
Signed-off-by: default avatarWANG Cong <xiyou.wangcong@gmail.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bd6cba53
...@@ -83,6 +83,8 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid) ...@@ -83,6 +83,8 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid)
return -EEXIST; return -EEXIST;
section = sparse_index_alloc(nid); section = sparse_index_alloc(nid);
if (!section)
return -ENOMEM;
/* /*
* This lock keeps two different sections from * This lock keeps two different sections from
* reallocating for the same index * reallocating for the same index
......
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