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

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

1 files changed, 4 insertions, 2 deletions

diff --git a/util.c b/util.c
index 3a4a085..5bac0ec 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)