1 files changed, 13 insertions, 1 deletions

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 798b3ab054e..459d601947a 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1194,6 +1194,15 @@ static int cpuset_can_attach(struct cgroup_subsys *ss,
 
         if (cpus_empty(cs->cpus_allowed) || nodes_empty(cs->mems_allowed))
                 return -ENOSPC;
+        if (tsk->flags & PF_THREAD_BOUND) {
+                cpumask_t mask;
+
+                mutex_lock(&callback_mutex);
+                mask = cs->cpus_allowed;
+                mutex_unlock(&callback_mutex);
+                if (!cpus_equal(tsk->cpus_allowed, mask))
+                        return -EINVAL;
+        }
 
         return security_task_setscheduler(tsk, 0, NULL);
 }
@@ -1207,11 +1216,14 @@ static void cpuset_attach(struct cgroup_subsys *ss,
         struct mm_struct *mm;
         struct cpuset *cs = cgroup_cs(cont);
         struct cpuset *oldcs = cgroup_cs(oldcont);
+        int err;
 
         mutex_lock(&callback_mutex);
         guarantee_online_cpus(cs, &cpus);
-        set_cpus_allowed_ptr(tsk, &cpus);
+        err = set_cpus_allowed_ptr(tsk, &cpus);
         mutex_unlock(&callback_mutex);
+        if (err)
+                return;
 
         from = oldcs->mems_allowed;
         to = cs->mems_allowed;