linux-kernel - Re: KMSAN: uninit-value in ath9k_htc_rx

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Message-ID: <CAG_fn=Wq51FMbty4c_RwjBSFWS1oceL1rOAUzCyRnGEzajQRAg@mail.gmail.com>
Date:   Thu, 25 Aug 2022 17:09:22 +0200
From:   Alexander Potapenko <glider@...gle.com>
To:     Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Cc:     phil@...lpotter.co.uk, ath9k-devel@....qualcomm.com,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: KMSAN: uninit-value in ath9k_htc_rx_msg

On Thu, Aug 25, 2022 at 4:34 PM Tetsuo Handa
<penguin-kernel@...ove.sakura.ne.jp> wrote:
>
> Hello.
Hi Tetsuo,

> I found that your patch was applied. But since the reproducer tested only 0 byte
> case, I think that rejecting only less than sizeof(struct htc_frame_hdr) bytes
> is not sufficient.
>
> More complete patch with Ack from Toke is waiting at
> https://lkml.kernel.org/r/7acfa1be-4b5c-b2ce-de43-95b0593fb3e5@I-love.SAKURA.ne.jp .

Thanks for letting me know! I just checked that your patch indeed
fixes the issue I am facing.
If it is more complete, I think we'd indeed better use yours.

> Please consider overriding with my version.