From: Heinz Mauelshagen <heinzm@xxxxxxxxxx>
[ Upstream commit 5cae0aa77397015f530aeb34f3ced32db6ac2875 ]
Signed-off-by: Heinz Mauelshagen <heinzm@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Stable-dep-of: 249bed821b4d ("dm ioctl: Avoid double-fetch of version")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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,
--
2.39.2
