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, 3 insertions, 3 deletions

diff --git a/lib/lru_cache.c b/lib/lru_cache.c
index 9e0d469c7658..b1ee3b2540c9 100644
--- a/lib/lru_cache.c
+++ b/lib/lru_cache.c
@@ -94,14 +94,14 @@ struct lru_cache *lc_create(const char *name, struct kmem_cache *cache,
 	if (e_count > LC_MAX_ACTIVE)
 		return NULL;
 
-	slot = kcalloc(e_count, sizeof(struct hlist_head), GFP_KERNEL);
+	slot = kzalloc_objs(struct hlist_head, e_count, GFP_KERNEL);
 	if (!slot)
 		goto out_fail;
-	element = kcalloc(e_count, sizeof(struct lc_element *), GFP_KERNEL);
+	element = kzalloc_objs(struct lc_element *, e_count, GFP_KERNEL);
 	if (!element)
 		goto out_fail;
 
-	lc = kzalloc(sizeof(*lc), GFP_KERNEL);
+	lc = kzalloc_obj(*lc, GFP_KERNEL);
 	if (!lc)
 		goto out_fail;