linux-kernel - Re: [PATCH] selftests: Add a taint selftest

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Date:   Wed, 24 Aug 2022 07:51:54 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Andrew Delgadilo <adelg@...gle.com>
Cc:     Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, dylanbhatch@...gle.com,
        sashalevin@...gle.com, gthelen@...gle.com
Subject: Re: [PATCH] selftests: Add a taint selftest

On Wed, Aug 24, 2022 at 07:06:27AM +0200, Greg KH wrote:
> On Tue, Aug 23, 2022 at 09:19:58PM +0000, Andrew Delgadilo wrote:
> > From: Andrew Delgadillo <adelg@...gle.com>
> > 
> > When testing a kernel, one of the earliest signals one can get is if a
> > kernel has become tainted. For example, an organization might be
> > interested in mass testing commits on their hardware. An obvious first
> > step would be to make sure every commit boots, and a next step would be
> > to make sure there are no warnings/crashes/lockups, hence the utility of
> > a taint test.
> 
> What's wrong with the tools/debugging/kernel-chktaint script?
> 
> Why do we need another "get what the taint status is" program?

Ah, looks like that script should probably be changed to return an error
code if a taint is found, but that should be a simpler patch rather than
create a whole new script.

thanks,

greg k-h