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>

2 files changed, 3 insertions, 3 deletions

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 1acbad2dbfdf..0d52e48918eb 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -525,7 +525,7 @@ static struct klp_object *klp_alloc_object_dynamic(const char *name,
 {
 	struct klp_object *obj;
 
-	obj = kzalloc(sizeof(*obj), GFP_KERNEL);
+	obj = kzalloc_obj(*obj, GFP_KERNEL);
 	if (!obj)
 		return NULL;
 
@@ -554,7 +554,7 @@ static struct klp_func *klp_alloc_func_nop(struct klp_func *old_func,
 {
 	struct klp_func *func;
 
-	func = kzalloc(sizeof(*func), GFP_KERNEL);
+	func = kzalloc_obj(*func, GFP_KERNEL);
 	if (!func)
 		return NULL;
 
diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c
index 90408500e5a3..1149840cd538 100644
--- a/kernel/livepatch/patch.c
+++ b/kernel/livepatch/patch.c
@@ -179,7 +179,7 @@ static int klp_patch_func(struct klp_func *func)
 			return -EINVAL;
 		}
 
-		ops = kzalloc(sizeof(*ops), GFP_KERNEL);
+		ops = kzalloc_obj(*ops, GFP_KERNEL);
 		if (!ops)
 			return -ENOMEM;