linux-kernel - Re: Traceback with CONFIG_REGMAP_KUNIT=y+CONFIG_DEBUG_ATOMIC

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Message-ID: <ZLhsHMwP/rVGjCju@finisterre.sirena.org.uk>
Date:   Thu, 20 Jul 2023 00:05:00 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org,
        Dan Carpenter <dan.carpenter@...aro.org>
Subject: Re: Traceback with CONFIG_REGMAP_KUNIT=y+CONFIG_DEBUG_ATOMIC_SLEEP=y

On Wed, Jul 19, 2023 at 03:37:54PM -0700, Guenter Roeck wrote:

> - Update the unit test regmap configuration to avoid using
>   spinlock as locking mechanism for rbtree tests.
>   That would work, but fail to catch situations where this happens
>   in the real world.

Do this.  The test is buggy, users should simply not do this.  Users who
need to allocate in atomic context need to use a cache type which does
not do dynamic allocation.

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