1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index f71341cd8340..3bb5f980fabf 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -961,6 +961,16 @@ xfs_ireq_setup(
 	    memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved)))
 		return -EINVAL;
 
+	if (hdr->flags & XFS_IREQ_SPECIAL) {
+		switch (hdr->ino) {
+		case XFS_IREQ_SPECIAL_ROOT:
+			hdr->ino = mp->m_sb.sb_rootino;
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
 	if (XFS_INO_TO_AGNO(mp, hdr->ino) >= mp->m_sb.sb_agcount)
 		return -EINVAL;