sh: off by one BUG_ON() in setup_bootmem_node()

This off by one bug is harmless but it upsets the static checkers and the
code is obvious so it doesn't hurt to fix it.  The Smatch warning is:

    arch/sh/mm/numa.c:47 setup_bootmem_node()
    error: buffer overflow 'node_data' 1024 <= 1024

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
index 3d85225..bce52ba 100644 (file)
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -31,7 +31,7 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
        unsigned long bootmem_paddr;
 
        /* Don't allow bogus node assignment */
-       BUG_ON(nid > MAX_NUMNODES || nid <= 0);
+       BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
 
        start_pfn = start >> PAGE_SHIFT;
        end_pfn = end >> PAGE_SHIFT;