um: vector: Fix memory leak in vector_config

[ Upstream commit 8f88c73afe481f93d40801596927e8c0047b6d96 ]

If the return value of the uml_parse_vector_ifspec function is NULL,
we should call kfree(params) to prevent memory leak.

Fixes: 6922d31f3415 ("High Performance UML Vector Network Driver")
Signed-off-by: Xiang Yang <xiangyang3@huawei.com>
Acked-By: Anton Ivanov <anton.ivanov@kot-begemot.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 769ffbd9e9a61476262d5ceefc0de7716e9072d4..eb9dba8dcf9584f478710bd82ce1fdbf3b410f4c 100644 (file)
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -746,6 +746,7 @@ static int vector_config(char *str, char **error_out)
 
        if (parsed == NULL) {
                *error_out = "vector_config failed to parse parameters";
+               kfree(params);
                return -EINVAL;
        }