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/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 67e9e811de3a..188b0e35f856 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -1061,7 +1061,7 @@ static int prog_array_map_poke_track(struct bpf_map *map,
 			goto out;
 	}
 
-	elem = kmalloc(sizeof(*elem), GFP_KERNEL);
+	elem = kmalloc_obj(*elem, GFP_KERNEL);
 	if (!elem) {
 		ret = -ENOMEM;
 		goto out;
@@ -1174,7 +1174,7 @@ static struct bpf_map *prog_array_map_alloc(union bpf_attr *attr)
 	struct bpf_array_aux *aux;
 	struct bpf_map *map;
 
-	aux = kzalloc(sizeof(*aux), GFP_KERNEL_ACCOUNT);
+	aux = kzalloc_obj(*aux, GFP_KERNEL_ACCOUNT);
 	if (!aux)
 		return ERR_PTR(-ENOMEM);
 
@@ -1237,7 +1237,7 @@ static struct bpf_event_entry *bpf_event_entry_gen(struct file *perf_file,
 {
 	struct bpf_event_entry *ee;
 
-	ee = kzalloc(sizeof(*ee), GFP_KERNEL);
+	ee = kzalloc_obj(*ee, GFP_KERNEL);
 	if (ee) {
 		ee->event = perf_file->private_data;
 		ee->perf_file = perf_file;