linux-kernel - Re: canfdtest on flexcan loopback

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Message-ID: <20200917125913.leisscxw2rrbuzyw@skbuf>
Date:   Thu, 17 Sep 2020 12:59:14 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Vladimir Oltean <olteanv@...il.com>
CC:     Marc Kleine-Budde <mkl@...gutronix.de>,
        "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 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

Thanks,
-Vladimir