[patch 19/29] x86: fix off-by-one in find_next_zero_string

[Greg Kroah-Hartman]

2.6.23-stable review patch.  If anyone has any objections, please let us
know.

------------------
From: Andrew Hastings <abh@xxxxxxxx>

patch 801916c1b369b637ce799e6c71a94963ff63df79 in mainline.

x86: fix off-by-one in find_next_zero_string

Fix an off-by-one error in find_next_zero_string which prevents
allocating the last bit.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Andrew Hastings <abh@xxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/x86_64/lib/bitstr.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86_64/lib/bitstr.c
+++ b/arch/x86_64/lib/bitstr.c
@@ -14,7 +14,7 @@ find_next_zero_string(unsigned long *bit
 	
 	/* could test bitsliced, but it's hardly worth it */
 	end = n+len;
-	if (end >= nbits) 
+	if (end > nbits)
 		return -1; 
 	for (i = n+1; i < end; i++) { 
 		if (test_bit(i, bitmap)) {  

-- 
-
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