From: Jens Axboe <axboe@fb.com>
Date: Wed, 9 Apr 2014 03:15:09 +0000 (-0600)
Subject: diskutil: fix potential out-of-bounds array write
X-Git-Tag: fio-2.1.8~5^2~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=976406b8a0d823f053400178b7b86f32a973762d;ds=sidebyside

diskutil: fix potential out-of-bounds array write

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/diskutil.c b/diskutil.c
index 9aa1fa15..cbde42e9 100644
--- a/diskutil.c
+++ b/diskutil.c
@@ -236,7 +236,7 @@ static void find_add_disk_slaves(struct thread_data *td, char *path,
 		 * are links to the real directories for the slave
 		 * devices?
 		 */
-		linklen = readlink(temppath, slavepath, PATH_MAX - 0);
+		linklen = readlink(temppath, slavepath, PATH_MAX - 1);
 		if (linklen  < 0) {
 			perror("readlink() for slave device.");
 			return;