treewide: Replace kmalloc with kmalloc_obj for non-scalar types

This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 21bc9c1f7c06..d773720d11bf 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -168,8 +168,7 @@ static struct scatterlist *sg_kmalloc(unsigned int nents, gfp_t gfp_mask)
 		kmemleak_alloc(ptr, PAGE_SIZE, 1, gfp_mask);
 		return ptr;
 	} else
-		return kmalloc_array(nents, sizeof(struct scatterlist),
-				     gfp_mask);
+		return kmalloc_objs(struct scatterlist, nents, gfp_mask);
 }
 
 static void sg_kfree(struct scatterlist *sg, unsigned int nents)
@@ -632,8 +631,7 @@ struct scatterlist *sgl_alloc_order(unsigned long long length,
 			return NULL;
 		nalloc++;
 	}
-	sgl = kmalloc_array(nalloc, sizeof(struct scatterlist),
-			    gfp & ~GFP_DMA);
+	sgl = kmalloc_objs(struct scatterlist, nalloc, gfp & ~GFP_DMA);
 	if (!sgl)
 		return NULL;