cgroup: Fix memory leak when parsing multiple source parameters

[linux-2.6-microblaze.git] / kernel / cgroup / cgroup-v1.c

diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index 191c329..32596fd 100644 (file)
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -908,6 +908,8 @@ int cgroup1_parse_param(struct fs_context *fc, struct fs_parameter *param)
        opt = fs_parse(fc, cgroup1_fs_parameters, param, &result);
        if (opt == -ENOPARAM) {
                if (strcmp(param->key, "source") == 0) {
+                       if (fc->source)
+                               return invalf(fc, "Multiple sources not supported");
                        fc->source = param->string;
                        param->string = NULL;
                        return 0;