[PATCH 1/5] io_uring/fs: check unused sqe fields for unlinkat

Zero check unused SQE fields addr3 and pad2 for unlinkat. They're
not needed now, but could be used sometime in the future.

Signed-off-by: Yi Xie <[email protected]>
---
 io_uring/fs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/io_uring/fs.c b/io_uring/fs.c
index d0580c754bf8..26ea841a22e7 100644
--- a/io_uring/fs.c
+++ b/io_uring/fs.c
@@ -110,7 +110,8 @@ int io_unlinkat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 	const char __user *fname;
 	int err;
 
-	if (sqe->off || sqe->len || sqe->buf_index || sqe->splice_fd_in)
+	if (sqe->off || sqe->len || sqe->buf_index || sqe->splice_fd_in ||
+	    sqe->addr3 || sqe->__pad2[0])
 		return -EINVAL;
 	if (unlikely(req->flags & REQ_F_FIXED_FILE))
 		return -EBADF;
-- 
2.25.1