linux-kernel - Re: CONFIG_DEBUG_TEST_DRIVER

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Message-ID: <20161007035649.GA17183@kroah.com>
Date:   Fri, 7 Oct 2016 05:56:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Laura Abbott <labbott@...hat.com>
Cc:     Rob Herring <robh@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: CONFIG_DEBUG_TEST_DRIVER_REMOVE needs a warning

On Thu, Oct 06, 2016 at 04:53:20PM -0700, Laura Abbott wrote:
> On a whim, I decided to turn on CONFIG_DEBUG_TEST_DRIVER_REMOVE on
> Fedora rawhide since it sounded harmless enough. It spewed warnings
> and panicked some systems. Clearly it's  doing its job
> well of finding drivers that can't handle remove properly and I
> underestimated it.

Yes, we knew it was going to find bugs, you were brave :)

> I was expecting to maybe find a driver or two.
> Can we get stronger Kconfig text indicating that this shouldn't be
> turned on lightly? I'll be turning the option off in Fedora but sending
> out reports from what was found.

Care to send a patch with the wording change you would have found better
to warn yourself not to do this?

thanks,

greg k-h