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-rw-r--r--mm/mempolicy.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 290fb5bf0440..3cec080faa23 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1730,10 +1730,12 @@ struct mempolicy *__mpol_dup(struct mempolicy *old)
if (!new)
return ERR_PTR(-ENOMEM);
+ rcu_read_lock();
if (current_cpuset_is_being_rebound()) {
nodemask_t mems = cpuset_mems_allowed(current);
mpol_rebind_policy(old, &mems);
}
+ rcu_read_unlock();
*new = *old;
atomic_set(&new->refcnt, 1);
return new;