[PATCH 4.9 019/144] mm/slub.c: add __printf verification to slab_err()

From: Greg Kroah-Hartman
Date: Wed Aug 01 2018 - 13:26:46 EST

4.9-stable review patch. If anyone has any objections, please let me know.


From: Mathieu Malaterre <malat@xxxxxxxxxx>

[ Upstream commit a38965bf941b7c2af50de09c96bc5f03e136caef ]

__printf is useful to verify format and arguments. Remove the following
warning (with W=1):

mm/slub.c:721:2: warning: function might be possible candidate for `gnu_printf' format attribute [-Wsuggest-attribute=format]

Link: http://lkml.kernel.org/r/20180505200706.19986-1-malat@xxxxxxxxxx
Signed-off-by: Mathieu Malaterre <malat@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
mm/slub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/slub.c
+++ b/mm/slub.c
@@ -673,7 +673,7 @@ void object_err(struct kmem_cache *s, st
print_trailer(s, page, object);

-static void slab_err(struct kmem_cache *s, struct page *page,
+static __printf(3, 4) void slab_err(struct kmem_cache *s, struct page *page,
const char *fmt, ...)
va_list args;