linux-kernel - [patch] w1: off by one in w1_f29_remove

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Message-ID: <20110727095557.GL3824@shale.localdomain>
Date:	Wed, 27 Jul 2011 12:55:57 +0300
From:	Dan Carpenter <error27@...il.com>
To:	dagenaisj@...atest.com
Cc:	Evgeniy Polyakov <johnpol@....mipt.ru>,
	Andrew Morton <akpm@...ux-foundation.org>,
	open list <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: [patch] w1: off by one in w1_f29_remove_slave()

This reads past the end of the w1_f29_sysfs_bin_files[] array.  I
don't have this hardware, but I assume it crashes every time the
function is called.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c
index c377818..0da4e97 100644
--- a/drivers/w1/slaves/w1_ds2408.c
+++ b/drivers/w1/slaves/w1_ds2408.c
@@ -373,7 +373,7 @@ static int w1_f29_add_slave(struct w1_slave *sl)
 static void w1_f29_remove_slave(struct w1_slave *sl)
 {
 	int i;
-	for (i = NB_SYSFS_BIN_FILES; i <= 0; --i)
+	for (i = NB_SYSFS_BIN_FILES - 1; i <= 0; --i)
 		sysfs_remove_bin_file(&sl->dev.kobj,
 			&(w1_f29_sysfs_bin_files[i]));
 }
--
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