[PATCH 1/1] io_uring/net: reject SEND_VECTORIZED when unsupported

[PATCH 1/1] io_uring/net: reject SEND_VECTORIZED when unsupported

[Pavel Begunkov]

IORING_SEND_VECTORIZED with registered buffers is not implemented but
could be. Don't silently ignore the flag in this case but reject it with
an error. It only affects sendzc as normal sends don't support
registered buffers.

Fixes: 6f02527729bd3 ("io_uring/net: Allow to do vectorized send")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/net.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/io_uring/net.c b/io_uring/net.c
index 7ebfd51b84de..3e6112beea88 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -375,6 +375,8 @@ static int io_send_setup(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 		kmsg->msg.msg_namelen = addr_len;
 	}
 	if (sr->flags & IORING_RECVSEND_FIXED_BUF) {
+		if (sr->flags & IORING_SEND_VECTORIZED)
+			return -EINVAL;
 		req->flags |= REQ_F_IMPORT_BUFFER;
 		return 0;
 	}
-- 
2.53.0

Re: [PATCH 1/1] io_uring/net: reject SEND_VECTORIZED when unsupported

[Jens Axboe]

On Mon, 02 Mar 2026 14:32:04 +0000, Pavel Begunkov wrote:
> IORING_SEND_VECTORIZED with registered buffers is not implemented but
> could be. Don't silently ignore the flag in this case but reject it with
> an error. It only affects sendzc as normal sends don't support
> registered buffers.
> 
> 

Applied, thanks!

[1/1] io_uring/net: reject SEND_VECTORIZED when unsupported
      commit: c36e28becd0586ac98318fd335e5e91d19cd2623

Best regards,
-- 
Jens Axboe