netdev - Re: [PATCH] net: stmmac: dwc-qos: Disable split header for Tegra194

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 7 Jul 2022 11:12:26 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH] net: stmmac: dwc-qos: Disable split header for Tegra194


On 07/07/2022 03:11, Jakub Kicinski wrote:
> On Wed, 6 Jul 2022 09:39:13 +0100 Jon Hunter wrote:
>> There is a long-standing issue with the Synopsys DWC Ethernet driver
>> for Tegra194 where random system crashes have been observed [0]. The
>> problem occurs when the split header feature is enabled in the stmmac
>> driver. In the bad case, a larger than expected buffer length is
>> received and causes the calculation of the total buffer length to
>> overflow. This results in a very large buffer length that causes the
>> kernel to crash. Why this larger buffer length is received is not clear,
>> however, the feedback from the NVIDIA design team is that the split
>> header feature is not supported for Tegra194. Therefore, disable split
>> header support for Tegra194 to prevent these random crashes from
>> occurring.
>>
>> [0] https://lore.kernel.org/linux-tegra/b0b17697-f23e-8fa5-3757-604a86f3a095@nvidia.com/
>>
>> Signed-off-by: Jon Hunter <jonathanh@...dia.com>
> 
> Fixes: 67afd6d1cfdf ("net: stmmac: Add Split Header support and enable it in XGMAC cores")
> 
> correct?


Yes that is correct. I forgot to add. Let me know if you want me to send 
a V2.

Thanks
Jon

-- 
nvpublic