From bd1fd72e13652416da4c646ea47549fcfdf49b26 Mon Sep 17 00:00:00 2001
From: Robert LeBlanc <robert@leblancnet.us>
Date: Wed, 24 Aug 2016 10:10:44 -0600
Subject: [PATCH] mdopen: Prevent overrunning the devname buffer when copying
 devnm into it for long md names.

Linux allows for 32 character device names. When using the maximum
size device name and also storing "/dev/", devname needs to be 37
character long to store the complete device name.
i.e. "/dev/md_abcdefghijklmnopqrstuvwxyz12\0"

Signed-off-by: Robert LeBlanc<robert@leblancnet.us>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
 mdopen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mdopen.c b/mdopen.c
index f818fdf..5af344b 100644
--- a/mdopen.c
+++ b/mdopen.c
@@ -144,7 +144,7 @@ int create_mddev(char *dev, char *name, int autof, int trustworthy,
 	struct createinfo *ci = conf_get_create_info();
 	int parts;
 	char *cname;
-	char devname[20];
+	char devname[37];
 	char devnm[32];
 	char cbuf[400];
 	if (chosen == NULL)
-- 
2.7.4