From 583ceee2ed1d171718aee348163f2ed25d461772 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Fri, 27 Jul 2012 15:08:11 +0100 Subject: dm thin metadata: zero unused superblock uuid Zero the unused uuid when initialising the metadata superblock. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin-metadata.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/md') diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c index 934b3fc7bfc9..9f7c1e01dda2 100644 --- a/drivers/md/dm-thin-metadata.c +++ b/drivers/md/dm-thin-metadata.c @@ -455,6 +455,7 @@ static int __write_initial_superblock(struct dm_pool_metadata *pmd) disk_super = dm_block_data(sblock); disk_super->flags = 0; + memset(disk_super->uuid, 0, sizeof(disk_super->uuid)); disk_super->magic = cpu_to_le64(THIN_SUPERBLOCK_MAGIC); disk_super->version = cpu_to_le32(THIN_VERSION); disk_super->time = 0; -- cgit v1.2.1