linux-hardening - Re: [PATCH] fortify: Provide a memcpy trap door for sharp corners

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Date:   Thu, 12 May 2022 09:10:11 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Kees Cook <keescook@...omium.org>
Cc:     kuba@...nel.org, edumazet@...gle.com, davem@...emloft.net,
        pabeni@...hat.com, lixiaoyan@...gle.com, tariqt@...dia.com,
        saeedm@...dia.com, leon@...nel.org, netdev@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org
Subject: Re: [PATCH] fortify: Provide a memcpy trap door for sharp corners

Hello:

This patch was applied to netdev/net-next.git (master)
by Paolo Abeni <pabeni@...hat.com>:

On Tue, 10 May 2022 19:53:01 -0700 you wrote:
> As we continue to narrow the scope of what the FORTIFY memcpy() will
> accept and build alternative APIs that give the compiler appropriate
> visibility into more complex memcpy scenarios, there is a need for
> "unfortified" memcpy use in rare cases where combinations of compiler
> behaviors, source code layout, etc, result in cases where the stricter
> memcpy checks need to be bypassed until appropriate solutions can be
> developed (i.e. fix compiler bugs, code refactoring, new API, etc). The
> intention is for this to be used only if there's no other reasonable
> solution, for its use to include a justification that can be used
> to assess future solutions, and for it to be temporary.
> 
> [...]

Here is the summary with links:
  - fortify: Provide a memcpy trap door for sharp corners
    https://git.kernel.org/netdev/net-next/c/43213daed6d6

You are awesome, thank you!
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