From: Yi Xie <xieyi@kylinos.cn>
Date: Tue, 14 Jul 2026 03:03:06 +0000 (+0800)
Subject: io_uring/fs: check unused sqe fields for unlinkat
X-Git-Tag: v7.2-rc4~3^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cc609376e9a43166a2fba2aef6c5f9ea262ce722;p=thirdparty%2Flinux.git

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 <xieyi@kylinos.cn>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://patch.msgid.link/20260714030306.64820-1-xieyi@kylinos.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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;