From: Neil Brown <neilb@suse.de>
Date: Tue, 14 Jun 2005 01:06:42 +0000 (+0000)
Subject: Fix a possible overflow when shifting a sector size to a byte count
X-Git-Tag: mdadm-1.12.0~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d74c6de8d18ae40a6dec8e8ef804f72ce2b60f21;p=thirdparty%2Fmdadm.git

Fix a possible overflow when shifting a sector size to a byte count

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
---

diff --git a/util.c b/util.c
index 3a4a0853..5bac0ec4 100644
--- a/util.c
+++ b/util.c
@@ -221,8 +221,10 @@ int load_super(int fd, mdp_super_t *super)
 	{
 		if (ioctl(fd, BLKGETSIZE, &size))
 			return 1;
-		else
-			dsize = size << 9;
+		else {
+			dsize = size;
+			dsize <<= 9;
+		}
 	}
 
 	if (dsize < MD_RESERVED_SECTORS*2)