linux-kernel - [PATCH 4.9 005/121] mtd: Fix comparison in map_word

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]

Message-Id: <20200929105930.457604144@linuxfoundation.org>
Date:   Tue, 29 Sep 2020 12:59:09 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ben Hutchings <ben@...adent.org.uk>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        "Nobuhiro Iwamatsu (CIP)" <noburhio1.nobuhiro@...hiba.co.jp>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 005/121] mtd: Fix comparison in map_word_andequal()

From: Ben Hutchings <ben@...adent.org.uk>

commit ea739a287f4f16d6250bea779a1026ead79695f2 upstream.

Commit 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
changed map_word_andequal() into a macro, but also changed the right
hand side of the comparison from val3 to val2.  Change it back to use
val3 on the right hand side.

Thankfully this did not cause a regression because all callers
currently pass the same argument for val2 and val3.

Fixes: 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Boris Brezillon <boris.brezillon@...tlin.com>
Signed-off-by: Nobuhiro Iwamatsu (CIP) <noburhio1.nobuhiro@...hiba.co.jp>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/linux/mtd/map.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -312,7 +312,7 @@ void map_destroy(struct mtd_info *mtd);
 ({									\
 	int i, ret = 1;							\
 	for (i = 0; i < map_words(map); i++) {				\
-		if (((val1).x[i] & (val2).x[i]) != (val2).x[i]) {	\
+		if (((val1).x[i] & (val2).x[i]) != (val3).x[i]) {	\
 			ret = 0;					\
 			break;						\
 		}							\