linux-kernel - Re: [PATCH v7 0/5] KUnit-KASAN Integration

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Date:   Thu, 28 May 2020 12:52:17 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     David Gow <davidgow@...gle.com>
Cc:     shuah <shuah@...nel.org>, Alan Maguire <alan.maguire@...cle.com>,
        Patricia Alfonso <trishalfonso@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        KUnit Development <kunit-dev@...glegroups.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH v7 0/5] KUnit-KASAN Integration

On Tue, May 26, 2020 at 7:51 PM David Gow <davidgow@...gle.com> wrote:
>
> On Sat, May 23, 2020 at 6:30 AM shuah <shuah@...nel.org> wrote:
> >
> > On 5/3/20 4:09 AM, Alan Maguire wrote:
> > > On Thu, 23 Apr 2020, David Gow wrote:
> > >
> > >> This patchset contains everything needed to integrate KASAN and KUnit.
> > >>
> > >> KUnit will be able to:
> > >> (1) Fail tests when an unexpected KASAN error occurs
> > >> (2) Pass tests when an expected KASAN error occurs
> > >>
> > >> Convert KASAN tests to KUnit with the exception of copy_user_test
> > >> because KUnit is unable to test those.
> > >>
> > >> Add documentation on how to run the KASAN tests with KUnit and what to
> > >> expect when running these tests.
> > >>
> > >> This patchset depends on:
> > >> - "[PATCH v3 kunit-next 0/2] kunit: extend kunit resources API" [1]
> > >> - "[PATCH v3 0/3] Fix some incompatibilites between KASAN and
> > >>    FORTIFY_SOURCE" [2]
> > >>
> > >> Changes from v6:
> > >>   - Rebased on top of kselftest/kunit
> > >>   - Rebased on top of Daniel Axtens' fix for FORTIFY_SOURCE
> > >>     incompatibilites [2]
> > >>   - Removed a redundant report_enabled() check.
> > >>   - Fixed some places with out of date Kconfig names in the
> > >>     documentation.
> > >>
> > >
> > > Sorry for the delay in getting to this; I retested the
> > > series with the above patchsets pre-applied; all looks
> > > good now, thanks!  Looks like Daniel's patchset has a v4
> > > so I'm not sure if that will have implications for applying
> > > your changes on top of it (haven't tested it yet myself).
> > >
> > > For the series feel free to add
> > >
> > > Tested-by: Alan Maguire <alan.maguire@...cle.com>
> > >
> > > I'll try and take some time to review v7 shortly, but I wanted
> > > to confirm the issues I saw went away first in case you're
> > > blocked.  The only remaining issue I see is that we'd need the
> > > named resource patchset to land first; it would be good
> > > to ensure the API it provides is solid so you won't need to
> > > respin.
> > >
> > > Thanks!
> > >
> > > Alan
> > >
> > >> Changes from v5:
> > >>   - Split out the panic_on_warn changes to a separate patch.
> > >>   - Fix documentation to fewer to the new Kconfig names.
> > >>   - Fix some changes which were in the wrong patch.
> > >>   - Rebase on top of kselftest/kunit (currently identical to 5.7-rc1)
> > >>
> > >
> >
> > Hi Brendan,
> >
> > Is this series ready to go inot Linux 5.8-rc1? Let me know.
> > Probably needs rebase on top of kselftest/kunit. I applied
> > patches from David and Vitor
> >
> > thanks,
> > -- Shuah
> >
>
> Hi Shuah,
>
> I think the only things holding this up are the missing dependencies:
> the "extend kunit resources API" patches[1] for KUnit (which look
> ready to me), and the "Fix some incompatibilities between KASAN and
> FORTIFY_SOURCE" changes[2] on the KASAN side (which also seem ready).
>
> This patchset may need a (likely rather trivial) rebase on top of
> whatever versions of those end up merged: I'm happy to do that if
> necessary.
>
> Cheers,
> -- David
>
> [1]: https://lore.kernel.org/linux-kselftest/1585313122-26441-1-git-send-email-alan.maguire@oracle.com/T/#t
> [2]: http://lkml.iu.edu/hypermail/linux/kernel/2004.3/00735.html

As David pointed out, this series is waiting on its dependencies.
Sorry, I thought the "extend KUnit resources API" patchset was ready
to go, but I realized I only gave a reviewed-by to one of the patches.
Both have been reviewed now, but one patch needs a minor fix.

As for other patches, the patches from David, Vitor, and Anders should
cover everything. Thanks!