From: Heinz Mauelshagen heinzm@redhat.com
[ Upstream commit 5cae0aa77397015f530aeb34f3ced32db6ac2875 ]
Signed-off-by: Heinz Mauelshagen heinzm@redhat.com Signed-off-by: Mike Snitzer snitzer@kernel.org Stable-dep-of: 249bed821b4d ("dm ioctl: Avoid double-fetch of version") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-ioctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 2ced382cdd70b..6aeae095086d7 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1819,8 +1819,8 @@ static int check_version(unsigned int cmd, struct dm_ioctl __user *user) if (copy_from_user(version, user->version, sizeof(version))) return -EFAULT;
- if ((DM_VERSION_MAJOR != version[0]) || - (DM_VERSION_MINOR < version[1])) { + if ((version[0] != DM_VERSION_MAJOR) || + (version[1] > DM_VERSION_MINOR)) { DMERR("ioctl interface mismatch: kernel(%u.%u.%u), user(%u.%u.%u), cmd(%d)", DM_VERSION_MAJOR, DM_VERSION_MINOR, DM_VERSION_PATCHLEVEL,