linux-kernel - Re: [PATCH v4] net: asix: fix uninit value bugs

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Message-Id: <162928380541.20153.5366417098709462761.git-patchwork-notify@kernel.org>
Date:   Wed, 18 Aug 2021 10:50:05 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, linux@...pel-privat.de,
        andrew@...n.ch, himadrispandya@...il.com,
        robert.foss@...labora.com, freddy@...x.com.tw,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        syzbot+a631ec9e717fb0423053@...kaller.appspotmail.com
Subject: Re: [PATCH v4] net: asix: fix uninit value bugs

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Tue, 17 Aug 2021 19:37:23 +0300 you wrote:
> Syzbot reported uninit-value in asix_mdio_read(). The problem was in
> missing error handling. asix_read_cmd() should initialize passed stack
> variable smsr, but it can fail in some cases. Then while condidition
> checks possibly uninit smsr variable.
> 
> Since smsr is uninitialized stack variable, driver can misbehave,
> because smsr will be random in case of asix_read_cmd() failure.
> Fix it by adding error handling and just continue the loop instead of
> checking uninit value.
> 
> [...]

Here is the summary with links:
  - [v4] net: asix: fix uninit value bugs
    https://git.kernel.org/netdev/net/c/a786e3195d6a

You are awesome, thank you!
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