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-rw-r--r--mm/hugetlb.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b21d78c..ceb3ebb 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -444,6 +444,15 @@ retry:
page = alloc_huge_page(vma, address);
if (!page) {
hugetlb_put_quota(mapping);
+ /*
+ * No huge pages available. So this is an OOM
+ * condition but we do not want to trigger the OOM
+ * killer, so we return VM_FAULT_SIGBUS.
+ *
+ * A program using hugepages may fault with Bus Error
+ * because no huge pages are available in the cpuset, per
+ * memory policy or because all are in use!
+ */
goto out;
}
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