sparc64: Fix overshoot in nid_range().

If 'start' does not begin on a page boundary, we can overshoot
past 'end'.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 217de3ea29e842cff4c0eff6be2b82c5a13f25fe..64d8e7623e0d52eb00cca50a242ec6b023d2a818 100644 (file)
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -796,6 +796,9 @@ static unsigned long nid_range(unsigned long start, unsigned long end,
                start += PAGE_SIZE;
        }
 
+       if (start > end)
+               start = end;
+
        return start;
 }
 #else