netdev - Re: [PATCH net] sctp: check asoc strreset_chunk in sctp_generate_reconf

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Message-Id: <165075001054.4343.8485395307076127833.git-patchwork-notify@kernel.org>
Date:   Sat, 23 Apr 2022 21:40:10 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Xin Long <lucien.xin@...il.com>
Cc:     netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org, marcelo.leitner@...il.com,
        nhorman@...driver.com
Subject: Re: [PATCH net] sctp: check asoc strreset_chunk in
 sctp_generate_reconf_event

Hello:

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

On Wed, 20 Apr 2022 16:52:41 -0400 you wrote:
> A null pointer reference issue can be triggered when the response of a
> stream reconf request arrives after the timer is triggered, such as:
> 
>   send Incoming SSN Reset Request --->
>   CPU0:
>    reconf timer is triggered,
>    go to the handler code before hold sk lock
>                             <--- reply with Outgoing SSN Reset Request
>   CPU1:
>    process Outgoing SSN Reset Request,
>    and set asoc->strreset_chunk to NULL
>   CPU0:
>    continue the handler code, hold sk lock,
>    and try to hold asoc->strreset_chunk, crash!
> 
> [...]

Here is the summary with links:
  - [net] sctp: check asoc strreset_chunk in sctp_generate_reconf_event
    https://git.kernel.org/netdev/net/c/165e3e17fe8f

You are awesome, thank you!
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