linux-kernel - Re: CONFIG_DEBUG_TEST_DRIVER

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <c1fe5707-6b21-003a-14ff-5874290eeec3@redhat.com>
Date:   Fri, 7 Oct 2016 08:40:26 -0700
From:   Laura Abbott <labbott@...hat.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
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 10/06/2016 08:56 PM, Greg Kroah-Hartman wrote:
> 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 :)
>

Sure, let's go with brave. That makes me sound good ;)

>> 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?
>

Sure.

> thanks,
>
> greg k-h
>

Thanks,
Laura