netdev - Re: [PATCH net-next] tls: cap the output scatter list to something reasonable

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 PHC
Open Source and information security mailing list archives

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

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

Date:   Fri, 04 Feb 2022 10:40:12 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        viro@...iv.linux.org.uk, borisp@...dia.com,
        john.fastabend@...il.com, daniel@...earbox.net,
        vfedorenko@...ek.ru, kernel-team@...com, axboe@...nel.dk
Subject: Re: [PATCH net-next] tls: cap the output scatter list to something
 reasonable

Hello:

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

On Wed,  2 Feb 2022 14:20:31 -0800 you wrote:
> TLS recvmsg() passes user pages as destination for decrypt.
> The decrypt operation is repeated record by record, each
> record being 16kB, max. TLS allocates an sg_table and uses
> iov_iter_get_pages() to populate it with enough pages to
> fit the decrypted record.
> 
> Even though we decrypt a single message at a time we size
> the sg_table based on the entire length of the iovec.
> This leads to unnecessarily large allocations, risking
> triggering OOM conditions.
> 
> [...]

Here is the summary with links:
  - [net-next] tls: cap the output scatter list to something reasonable
    https://git.kernel.org/netdev/net-next/c/b93235e68921

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