Re: [PATCH v6 3/4] kunit: Taint the kernel when KUnit tests are run

Shuah Khan
2022-07-08T21:24:49Z

On 7/8/22 3:22 PM, Shuah Khan wrote:
> On 7/8/22 3:00 PM, Daniel Latypov wrote:
>> On Fri, Jul 8, 2022 at 1:22 PM Shuah Khan <skhan@linuxfoundation.org> wrote:
>>>
>>> On 7/7/22 10:48 PM, David Gow wrote:
>>>> Make KUnit trigger the new TAINT_TEST taint when any KUnit test is run.
>>>> Due to KUnit tests not being intended to run on production systems, and
>>>> potentially causing problems (or security issues like leaking kernel
>>>> addresses), the kernel's state should not be considered safe for
>>>> production use after KUnit tests are run.
>>>>
>>>> This both marks KUnit modules as test modules using MODULE_INFO() and
>>>> manually taints the kernel when tests are run (which catches builtin
>>>> tests).
>>>>
>>>> Acked-by: Luis Chamberlain <mcgrof@kernel.org>
>>>> Tested-by: Daniel Latypov <dlatypov@google.com>
>>>> Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
>>>> Signed-off-by: David Gow <davidgow@google.com>
>>>> ---
>>>>
>>>> No changes since v5:
>>>> https://lore.kernel.org/linux-kselftest/20220702040959.3232874-3-davidgow@google.com/
>>>>
>>>> No changes since v4:
>>>> https://lore.kernel.org/linux-kselftest/20220701084744.3002019-3-davidgow@google.com/
>>>>
>>>
>>> David, Brendan, Andrew,
>>>
>>> Just confirming the status of these patches. I applied v4 1/3 and v4 3/4
>>> to linux-kselftest kunit for 5.20-rc1.
>>> I am seeing v5 and v6 now. Andrew applied v5 looks like. Would you like
>>> me to drop the two I applied? Do we have to refresh with v6?
>>
>> Just noting here that there'll be a merge conflict between this patch
>> (3/4) and some other patches lined up to go through the kunit tree:
>> https://patchwork.kernel.org/project/linux-kselftest/patch/20220625050838.1618469-2-davidgow@google.com/
>>
>> Not sure how we want to handle that.
>>
>
> I can go drop the two patches and have Andrew carry the series through
> mm tree.
>

Sorry spoke too soon. Yes there are others that might have conflicts as
Daniel pointed out:

https://patchwork.kernel.org/project/linux-kselftest/patch/20220625050838.1618469-2-davidgow@google.com/

thanks,
-- Shuah