netdev - Re: [PATCHSET 0/2] Disallow ancillary data from __sys_{recv,send}msg

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Message-Id: <20191126.140039.2116411993007995978.davem@davemloft.net>
Date:   Tue, 26 Nov 2019 14:00:39 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     axboe@...nel.dk
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCHSET 0/2] Disallow ancillary data from
 __sys_{recv,send}msg_file()

From: Jens Axboe <axboe@...nel.dk>
Date: Mon, 25 Nov 2019 18:31:43 -0700

> io_uring currently uses __sys_sendmsg_file() and __sys_recvmsg_file() to
> handle sendmsg and recvmsg operations. This generally works fine, but we
> don't want to allow cmsg type operations, just "normal" data transfers.
> 
> This small patchset first splits the msghdr copy from the two main
> helpers in net/socket.c, then changes __sys_sendmsg_file() and
> __sys_recvmsg_file() to use those helpers. With patch 2, we also add a
> check to explicitly check for msghdr->msg_control and
> msghdr->msg_controllen and return -EINVAL if they are set.

For the series:

Acked-by: David S. Miller <davem@...emloft.net>