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-rw-r--r--include/linux/livepatch.h6
-rw-r--r--kernel/livepatch/core.c3
2 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
index bd830d590465..90843ccb7852 100644
--- a/include/linux/livepatch.h
+++ b/include/linux/livepatch.h
@@ -124,10 +124,12 @@ struct klp_patch {
};
#define klp_for_each_object(patch, obj) \
- for (obj = patch->objs; obj->funcs; obj++)
+ for (obj = patch->objs; obj->funcs || obj->name; obj++)
#define klp_for_each_func(obj, func) \
- for (func = obj->funcs; func->old_name; func++)
+ for (func = obj->funcs; \
+ func->old_name || func->new_func || func->old_sympos; \
+ func++)
int klp_register_patch(struct klp_patch *);
int klp_unregister_patch(struct klp_patch *);
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index d68fbf63b083..ddef649a2914 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -683,6 +683,9 @@ static void klp_free_patch(struct klp_patch *patch)
static int klp_init_func(struct klp_object *obj, struct klp_func *func)
{
+ if (!func->old_name || !func->new_func)
+ return -EINVAL;
+
INIT_LIST_HEAD(&func->stack_node);
func->state = KLP_DISABLED;