3.16.82-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Jan Kara <jack@xxxxxxx>
commit 3dd4d40b420846dd35869ccc8f8627feef2cff32 upstream.
Flags passed to Q_XQUOTARM were not sanity checked for invalid values.
Fix that.
Fixes: 9da93f9b7cdf ("xfs: fix Q_XQUOTARM ioctl")
Reported-by: Yang Xu <xuyang2018.jy@xxxxxxxxxxxxxx>
Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
fs/xfs/xfs_quotaops.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -119,6 +119,9 @@ xfs_fs_rm_xquota(
if (XFS_IS_QUOTA_ON(mp))
return -EINVAL;
+ if (uflags & ~(FS_USER_QUOTA | FS_GROUP_QUOTA | FS_PROJ_QUOTA))
+ return -EINVAL;
+
if (uflags & FS_USER_QUOTA)
flags |= XFS_DQ_USER;
if (uflags & FS_GROUP_QUOTA)
