linux-hardening - Re: [PATCH net-next v5] skbuff: Proactively round up to kmalloc bucket size

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Date:   Thu, 27 Oct 2022 14:00:15 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Kees Cook <keescook@...omium.org>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org,
        gregkh@...uxfoundation.org, ndesaulniers@...gle.com,
        rientjes@...gle.com, vbabka@...e.cz, asml.silence@...il.com,
        imagedong@...cent.com, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH net-next v5] skbuff: Proactively round up to kmalloc bucket
 size

Hello:

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

On Tue, 25 Oct 2022 15:39:35 -0700 you wrote:
> Instead of discovering the kmalloc bucket size _after_ allocation, round
> up proactively so the allocation is explicitly made for the full size,
> allowing the compiler to correctly reason about the resulting size of
> the buffer through the existing __alloc_size() hint.
> 
> This will allow for kernels built with CONFIG_UBSAN_BOUNDS or the
> coming dynamic bounds checking under CONFIG_FORTIFY_SOURCE to gain
> back the __alloc_size() hints that were temporarily reverted in commit
> 93dd04ab0b2b ("slab: remove __alloc_size attribute from __kmalloc_track_caller")
> 
> [...]

Here is the summary with links:
  - [net-next,v5] skbuff: Proactively round up to kmalloc bucket size
    https://git.kernel.org/netdev/net-next/c/12d6c1d3a2ad

You are awesome, thank you!
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