diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 809b135881246a616b92f59d71d02105bba52ef4..e41c21819ba08485d82f7b2a4b5c479af601d71a 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -3681,6 +3681,9 @@ static ssize_t cgroup_file_write(struct kernfs_open_file *of, char *buf, struct cgroup_subsys_state *css; int ret; + if (!nbytes) + return 0; + /* * If namespaces are delegation boundaries, disallow writes to * files in an non-init namespace root from inside the namespace