On Mon, Feb 15, 2021 at 08:04:11AM -0700, David Ahern wrote:
> On 2/15/21 5:03 AM, Dan Carpenter wrote:
> > Hi Arjun,
> >
> > url:
> > https://github.com/0day-ci/linux/commits/Arjun-Roy/tcp-Sanitize-CMSG-flags-and-reserved-args-in-tcp_zerocopy_receive/20210212-052537
> >
> > base: https://
On 2/15/21 5:03 AM, Dan Carpenter wrote:
> Hi Arjun,
>
> url:
> https://github.com/0day-ci/linux/commits/Arjun-Roy/tcp-Sanitize-CMSG-flags-and-reserved-args-in-tcp_zerocopy_receive/20210212-052537
> base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
> e4b62cf7559f2ef9a
Hi Arjun,
url:
https://github.com/0day-ci/linux/commits/Arjun-Roy/tcp-Sanitize-CMSG-flags-and-reserved-args-in-tcp_zerocopy_receive/20210212-052537
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
e4b62cf7559f2ef9a022de235e5a09a8d7ded520
config: x86_64-randconfig-m00
gested-by: Leon Romanovsky
> Suggested-by: Jakub Kicinski
>
> [...]
Here is the summary with links:
- [net-next] tcp: Sanitize CMSG flags and reserved args in
tcp_zerocopy_receive.
https://git.kernel.org/netdev/net-next/c/3c5a2fd042d0
You are awesome, thank you!
--
Deet-do
On Thu, 11 Feb 2021 13:21:07 -0800 Arjun Roy wrote:
> + if (unlikely(len > sizeof(zc))) {
> + err = check_zeroed_user(optval + sizeof(zc),
> + len - sizeof(zc));
> + if (err < 1)
> +
From: Arjun Roy
Explicitly define reserved field and require it and any subsequent
fields to be zero-valued for now. Additionally, limit the valid CMSG
flags that tcp_zerocopy_receive accepts.
Fixes: 7eeba1706eba ("tcp: Add receive timestamp support for receive zerocopy.")
Signed-off-by: Arjun R
