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authorMinChan Kim <minchan.kim@gmail.com>2008-05-19 17:12:08 +0400
committerPekka Enberg <penberg@cs.helsinki.fi>2008-05-19 21:55:25 +0400
commit239f49c0800778c863585a103805c58afbad6748 (patch)
treebc49ae2d4405b4431e6e7463b3eac52245793a02
parentf26a3988917913b3d11b2bd741601a2c64ab9204 (diff)
downloadlinux-239f49c0800778c863585a103805c58afbad6748.tar.xz
slob: Fix to return wrong pointer
Although slob_alloc return NULL, __kmalloc_node returns NULL + align. Because align always can be changed, it is very hard for debugging problem of no page if it don't return NULL. We have to return NULL in case of no page. [penberg@cs.helsinki.fi: fix formatting as suggested by Matt.] Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: MinChan Kim <minchan.kim@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
-rw-r--r--mm/slob.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/slob.c b/mm/slob.c
index 6038cbadf796..a3ad6671adf1 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -469,8 +469,9 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
return ZERO_SIZE_PTR;
m = slob_alloc(size + align, gfp, align, node);
- if (m)
- *m = size;
+ if (!m)
+ return NULL;
+ *m = size;
return (void *)m + align;
} else {
void *ret;