linux-kernel - [PATCH] [38/50] x86_64: fix off-by-one in find_next_zero

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 22 Sep 2007 00:32:38 +0200 (CEST)
From:	Andi Kleen <ak@...e.de>
To:	abh@...y.com, patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [38/50] x86_64: fix off-by-one in find_next_zero_string


From: Andrew Hastings <abh@...y.com>
Fix an off-by-one error in find_next_zero_string which prevents
allocating the last bit.

Signed-off-by: Andrew Hastings <abh@...y.com> on behalf of Cray Inc.
Signed-off-by: Andi Kleen <ak@...e.de>

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

Index: linux/arch/x86_64/lib/bitstr.c
===================================================================
--- linux.orig/arch/x86_64/lib/bitstr.c
+++ linux/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)) {  
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/