cred: add missing return error code when set_cred_ucounts() failed

If set_cred_ucounts() failed, we need return the error code.

Fixes: 905ae01c4ae2 ("Add a reference to ucounts for each cred")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lkml.kernel.org/r/20210526143805.2549649-1-yangyingliang@huawei.com
Reviewed-by: Alexey Gladkov <legion@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

diff --git a/kernel/cred.c b/kernel/cred.c
index dcfa30b..5a1d970 100644 (file)
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -372,7 +372,8 @@ int copy_creds(struct task_struct *p, unsigned long clone_flags)
                ret = create_user_ns(new);
                if (ret < 0)
                        goto error_put;
-               if (set_cred_ucounts(new) < 0)
+               ret = set_cred_ucounts(new);
+               if (ret < 0)
                        goto error_put;
        }