netdev - Re: [PATCH v2 net] tcp: fix skb_copy

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Message-Id: <168267181984.3488.15879400692691350248.git-patchwork-notify@kernel.org>
Date:   Fri, 28 Apr 2023 08:50:19 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        netdev@...r.kernel.org, eric.dumazet@...il.com, dsahern@...nel.org,
        lucien.xin@...il.com, willemb@...gle.com, lixiaoyan@...gle.com
Subject: Re: [PATCH v2 net] tcp: fix skb_copy_ubufs() vs BIG TCP

Hello:

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

On Fri, 28 Apr 2023 04:32:31 +0000 you wrote:
> David Ahern reported crashes in skb_copy_ubufs() caused by TCP tx zerocopy
> using hugepages, and skb length bigger than ~68 KB.
> 
> skb_copy_ubufs() assumed it could copy all payload using up to
> MAX_SKB_FRAGS order-0 pages.
> 
> This assumption broke when BIG TCP was able to put up to 512 KB per skb.
> 
> [...]

Here is the summary with links:
  - [v2,net] tcp: fix skb_copy_ubufs() vs BIG TCP
    https://git.kernel.org/netdev/net/c/7e692df39336

You are awesome, thank you!
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