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Date: Thu, 8 Feb 2024 22:10:56 +0000
From: Mark Brown <broonie@...nel.org>
To: Guenter Roeck <linux@...ck-us.net>
Cc: linux-kernel@...r.kernel.org
Subject: Re: Sporadic regmap unit test failure in raw_sync

On Thu, Feb 08, 2024 at 01:45:13PM -0800, Guenter Roeck wrote:

>     # raw_sync: EXPECTATION FAILED at drivers/base/regmap/regmap-kunit.c:1305
>     Expected &hw_buf[6] != val, but
>         &hw_buf[6] ==
>          57  30 
>         val ==
>          57  30 
>         not ok 4 rbtree-big
>         ok 5 maple-little
>         ok 6 maple-big
>     # raw_sync: pass:5 fail:1 skip:0 total:6
>     not ok 25 raw_sync

> This is with regmap: 'kunit: fix raw noinc write test wrapping'
> applied on top of the upstream kernel (v6.8-rc3-47-g047371968ffc).
> So far I have seen it only once, with the x86_64:q35 emulation in qemu.

I guess it's possible that we randomly generated the same value for the
initial and modified values here?

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