linux-kernel - Re: Regression: memory corruption on Atmel SAMA5D31

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Message-ID: <3105533c-d125-b8db-10e0-d85700e69597@microchip.com>
Date:   Sun, 31 Jul 2022 03:44:22 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <peda@...ntia.se>, <regressions@...mhuis.info>,
        <Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>
CC:     <du@...ntia.se>, <Patrice.Vilchez@...rochip.com>,
        <Cristian.Birsan@...rochip.com>, <Ludovic.Desroches@...rochip.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <gregkh@...uxfoundation.org>, <saravanak@...gle.com>,
        <dmaengine@...r.kernel.org>
Subject: Re: Regression: memory corruption on Atmel SAMA5D31

On 7/30/22 14:37, Peter Rosin wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> 2022-07-29 at 22:09, Peter Rosin wrote:
>> 2022-07-28 at 10:39, Tudor.Ambarus@...rochip.com wrote:
>>> Looks like I've already caught an oops in at-hdmac driver when not using virt-dma,
>>> see below. Would you please test with all the patches from [2] instead of just
>>> using the patch from [1]? I've run stress tests over night by using [2] and
>>> everything went fine on my side.
>>>
>>> Cheers,
>>> ta
>>>
>>> [2] To github.com:ambarus/linux-0day.git
>>>  * [new branch]                at-hdmac-virt-dma-2nd-iteration -> at-hdmac-virt-dma-2nd-iteration
>>
>> Hi Tudor,
>>
>> This last one feels very promising! It's been running for a few hours without
>> incidents, so even if it isn't fixed it's several magnitudes better.
>>
>> I'll leave it running for the night. Fingers crossed...
> 
> Reporting that it's still all good and that I think it's time to declare
> victory.
> 
> Thanks a bunch for you effort!
> 
> Looking through the patches on that branch, I suspect not all of it will
> be submitted upstream in that exact form. Please let me know when you have

Right, they're just some quick drafts which demonstrate where the problem
resides.

> a cleaned up series so that I can retest and add some tested-by tags to.

Sure. Will add your Reported-by tag when submitting. Thanks for the detailed
bug report and for the help since then!

> 
> Cheers and thanks again,
> Peter


-- 
Cheers,
ta