1 files changed, 7 insertions, 0 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index a963f2034dfc..976bbc5646fe 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -18,6 +18,7 @@
 #include <linux/bootmem.h>
 #include <linux/sysfs.h>
 #include <linux/slab.h>
+#include <linux/mmdebug.h>
 #include <linux/sched/signal.h>
 #include <linux/rmap.h>
 #include <linux/string_helpers.h>
@@ -4374,6 +4375,12 @@ int hugetlb_reserve_pages(struct inode *inode,
         struct resv_map *resv_map;
         long gbl_reserve;
 
+        /* This should never happen */
+        if (from > to) {
+                VM_WARN(1, "%s called with a negative range\n", __func__);
+                return -EINVAL;
+        }
+
         /*
          * Only apply hugepage reservation if asked. At fault time, an
          * attempt will be made for VM_NORESERVE to allocate a page