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-rw-r--r--mm/mempolicy.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index a37a5034f63..c94e58b192c 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -729,7 +729,11 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
} else {
*policy = pol == &default_policy ? MPOL_DEFAULT :
pol->mode;
- *policy |= pol->flags;
+ /*
+ * Internal mempolicy flags must be masked off before exposing
+ * the policy to userspace.
+ */
+ *policy |= (pol->flags & MPOL_MODE_FLAGS);
}
if (vma) {