linux-kernel - Re: [PATCH net-next v2] crypto: af_alg/hash: Fix recvmsg() after sendmsg(MSG

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Message-Id: <168728881968.9715.9390991093529503679.git-patchwork-notify@kernel.org>
Date:   Tue, 20 Jun 2023 19:20:19 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     David Howells <dhowells@...hat.com>
Cc:     netdev@...r.kernel.org, herbert@...dor.apana.org.au,
        syzbot+13a08c0bf4d212766c3c@...kaller.appspotmail.com,
        syzbot+14234ccf6d0ef629ec1a@...kaller.appspotmail.com,
        syzbot+4e2e47f32607d0f72d43@...kaller.appspotmail.com,
        syzbot+472626bb5e7c59fb768f@...kaller.appspotmail.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, axboe@...nel.dk, willy@...radead.org,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2] crypto: af_alg/hash: Fix recvmsg() after
 sendmsg(MSG_MORE)

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Fri, 16 Jun 2023 12:10:32 +0100 you wrote:
> If an AF_ALG socket bound to a hashing algorithm is sent a zero-length
> message with MSG_MORE set and then recvmsg() is called without first
> sending another message without MSG_MORE set to end the operation, an oops
> will occur because the crypto context and result doesn't now get set up in
> advance because hash_sendmsg() now defers that as long as possible in the
> hope that it can use crypto_ahash_digest() - and then because the message
> is zero-length, it the data wrangling loop is skipped.
> 
> [...]

Here is the summary with links:
  - [net-next,v2] crypto: af_alg/hash: Fix recvmsg() after sendmsg(MSG_MORE)
    https://git.kernel.org/netdev/net-next/c/b6d972f68983

You are awesome, thank you!
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