init_super1() memset full buffer allocated for superblock

Avoid possibly using stale data in bitmap and misc area of superblock.
In addition, remove superfluous memsets already covered by memset of
full superblock.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/super1.c b/super1.c
index f165f59201342a60fa6589ddb1d7f76db55fb5d6..4da599179e27aa376f8e3ae5348efc05d90ea915 100644 (file)
--- a/super1.c
+++ b/super1.c
@@ -848,7 +848,7 @@ static int init_super1(struct supertype *st, mdu_array_info_t *info,
                        ": %s could not allocate superblock\n", __func__);
                return 0;
        }
-       memset(sb, 0, MAX_SB_SIZE);
+       memset(sb, 0, SUPER1_SIZE);
 
        st->sb = sb;
        if (info == NULL) {
@@ -883,7 +883,6 @@ static int init_super1(struct supertype *st, mdu_array_info_t *info,
                sprintf(defname, "%d", info->md_minor);
                name = defname;
        }
-       memset(sb->set_name, 0, 32);
        if (homehost &&
            strchr(name, ':')== NULL &&
            strlen(homehost)+1+strlen(name) < 32) {