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, 1 insertions, 1 deletions

diff --git a/kernel/trace/rethook.c b/kernel/trace/rethook.c
index 30d224946881..d09d5a204627 100644
--- a/kernel/trace/rethook.c
+++ b/kernel/trace/rethook.c
@@ -108,7 +108,7 @@ struct rethook *rethook_alloc(void *data, rethook_handler_t handler,
 	if (!handler || num <= 0 || size < sizeof(struct rethook_node))
 		return ERR_PTR(-EINVAL);
 
-	rh = kzalloc(sizeof(struct rethook), GFP_KERNEL);
+	rh = kzalloc_obj(struct rethook, GFP_KERNEL);
 	if (!rh)
 		return ERR_PTR(-ENOMEM);