netdev - Re: [PATCH v1 net] tcp: Clear req->syncookie in reqsk

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Date: Wed, 20 Mar 2024 03:10:28 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Kuniyuki Iwashima <kuniyu@...zon.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, martin.lau@...nel.org, kuni1840@...il.com,
 netdev@...r.kernel.org, syzkaller@...glegroups.com
Subject: Re: [PATCH v1 net] tcp: Clear req->syncookie in reqsk_alloc().

Hello:

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

On Fri, 15 Mar 2024 15:47:10 -0700 you wrote:
> syzkaller reported a read of uninit req->syncookie. [0]
> 
> Originally, req->syncookie was used only in tcp_conn_request()
> to indicate if we need to encode SYN cookie in SYN+ACK, so the
> field remains uninitialised in other places.
> 
> The commit 695751e31a63 ("bpf: tcp: Handle BPF SYN Cookie in
> cookie_v[46]_check().") added another meaning in ACK path;
> req->syncookie is set true if SYN cookie is validated by BPF
> kfunc.
> 
> [...]

Here is the summary with links:
  - [v1,net] tcp: Clear req->syncookie in reqsk_alloc().
    https://git.kernel.org/netdev/net/c/956c0d619107

You are awesome, thank you!
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