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, 4 insertions, 4 deletions

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 6a86c0683b67..e2d6f9a91a49 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -108,11 +108,11 @@ static inline struct audit_entry *audit_init_entry(u32 field_count)
 	struct audit_entry *entry;
 	struct audit_field *fields;
 
-	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+	entry = kzalloc_obj(*entry, GFP_KERNEL);
 	if (unlikely(!entry))
 		return NULL;
 
-	fields = kcalloc(field_count, sizeof(*fields), GFP_KERNEL);
+	fields = kzalloc_objs(*fields, field_count, GFP_KERNEL);
 	if (unlikely(!fields)) {
 		kfree(entry);
 		return NULL;
@@ -638,7 +638,7 @@ static struct audit_rule_data *audit_krule_to_data(struct audit_krule *krule)
 	void *bufp;
 	int i;
 
-	data = kzalloc(struct_size(data, buf, krule->buflen), GFP_KERNEL);
+	data = kzalloc_flex(*data, buf, krule->buflen, GFP_KERNEL);
 	if (unlikely(!data))
 		return NULL;
 
@@ -1180,7 +1180,7 @@ int audit_list_rules_send(struct sk_buff *request_skb, int seq)
 	 * happen if we're actually running in the context of auditctl
 	 * trying to _send_ the stuff */
 
-	dest = kmalloc(sizeof(*dest), GFP_KERNEL);
+	dest = kmalloc_obj(*dest, GFP_KERNEL);
 	if (!dest)
 		return -ENOMEM;
 	dest->net = get_net(sock_net(NETLINK_CB(request_skb).sk));