linux-kernel - Re: canfdtest on flexcan loopback

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Message-ID: <26eccae7-e6bd-dbe4-abb6-4e71277a012a@pengutronix.de>
Date:   Thu, 17 Sep 2020 15:10:28 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Vladimir Oltean <vladimir.oltean@....com>,
        Vladimir Oltean <olteanv@...il.com>
Cc:     "wg@...ndegger.com" <wg@...ndegger.com>,
        Pankaj Bansal <pankaj.bansal@....com>,
        "Pankaj Bansal (OSS)" <pankaj.bansal@....nxp.com>,
        "linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
        Joakim Zhang <qiangqing.zhang@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: canfdtest on flexcan loopback

On 9/17/20 2:59 PM, Vladimir Oltean wrote:
> On Wed, Sep 16, 2020 at 03:14:37PM +0300, Vladimir Oltean wrote:
>> Nonetheless, you bring up a good point. I'll try to bring into net-next
>> the minimum amount of required delta (which seems to be the
>> fsl_lx2160a_r1_devtype_data structure only), and I'll re-test.
> 
> So I'm back with some interesting results.
> 
> Test 1:
> NXP LSDK 20.04 based on v5.4.3 - reordering reproduces instantly
> 
> Test 2:
> net-next 5.9-rc3 with upstream defconfig and all downstream patches
> imported from LSDK - hasn't reproduced in 20 hours of testing
> 
> Test 3:
> net-next 5.9-rc3 with .config imported from LSDK - hasn't reproduced in
> 335 iterations
> 
> Test 4:
> linux stable linux-5.4.y - hasn't reproduced in 137 iterations
> 
> Test 5:
> torvalds v5.4.3 - reproduces instantly

Is there a bug in v5.4.3? v5.4.66 is current latest v5.4.x

Marc

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