Ensure FMODE_NONOTIFY is not set by userspace

[net-next-2.6.git] / kernel / cgroup.c

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 3e6517e51fd3199aa1c9bd7773f33be3743c1a47..5cf366965d0ca5ec8766781367135838f3b2eac0 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1922,6 +1922,8 @@ static int cgroup_release_agent_write(struct cgroup *cgrp, struct cftype *cft,
                                      const char *buffer)
 {
        BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);
+       if (strlen(buffer) >= PATH_MAX)
+               return -EINVAL;
        if (!cgroup_lock_live_group(cgrp))
                return -ENODEV;
        strcpy(cgrp->root->release_agent_path, buffer);