linux-kernel - Re: [PATCH net-next] ip_tunnel: harden copying IP tunnel params to userspace

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Date: Mon, 08 Apr 2024 10:10:27 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, dan.carpenter@...aro.org, dsahern@...nel.org,
 horms@...nel.org, nex.sw.ncis.osdt.itp.upstreaming@...el.com,
 netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] ip_tunnel: harden copying IP tunnel params to
 userspace

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@...emloft.net>:

On Thu,  4 Apr 2024 18:03:02 +0200 you wrote:
> Structures which are about to be copied to userspace shouldn't have
> uninitialized fields or paddings.
> memset() the whole &ip_tunnel_parm in ip_tunnel_parm_to_user() before
> filling it with the kernel data. The compilers will hopefully combine
> writes to it.
> 
> Fixes: 117aef12a7b1 ("ip_tunnel: use a separate struct to store tunnel params in the kernel")
> Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
> Closes: https://lore.kernel.org/netdev/5f63dd25-de94-4ca3-84e6-14095953db13@moroto.mountain
> Signed-off-by: Alexander Lobakin <aleksander.lobakin@...el.com>
> 
> [...]

Here is the summary with links:
  - [net-next] ip_tunnel: harden copying IP tunnel params to userspace
    https://git.kernel.org/netdev/net-next/c/5a66cda52d7d

You are awesome, thank you!
-- 
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