linux-kernel - Re: [PATCH v3] skbuff: skb_segment, Call zero copy functions before using skbuff frags

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <169355222610.20762.15768271551540080758.git-patchwork-notify@kernel.org>
Date:   Fri, 01 Sep 2023 07:10:26 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Mohamed Khalfella <mkhalfella@...estorage.com>
Cc:     willemdebruijn.kernel@...il.com, alexanderduyck@...com,
        bpf@...r.kernel.org, brouer@...hat.com, davem@...emloft.net,
        dhowells@...hat.com, edumazet@...gle.com, keescook@...omium.org,
        kuba@...nel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com, willemb@...gle.com,
        stable@...r.kernel.org
Subject: Re: [PATCH v3] skbuff: skb_segment,
 Call zero copy functions before using skbuff frags

Hello:

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

On Thu, 31 Aug 2023 02:17:02 -0600 you wrote:
> Commit bf5c25d60861 ("skbuff: in skb_segment, call zerocopy functions
> once per nskb") added the call to zero copy functions in skb_segment().
> The change introduced a bug in skb_segment() because skb_orphan_frags()
> may possibly change the number of fragments or allocate new fragments
> altogether leaving nrfrags and frag to point to the old values. This can
> cause a panic with stacktrace like the one below.
> 
> [...]

Here is the summary with links:
  - [v3] skbuff: skb_segment, Call zero copy functions before using skbuff frags
    https://git.kernel.org/netdev/net/c/2ea35288c83b

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html