linux-kernel - Re: arm64: fp-stress: BUG: KFENCE: memory corruption in fpsimd_release

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Date:   Mon, 26 Jun 2023 11:53:14 -0600
From:   Daniel Díaz <daniel.diaz@...aro.org>
To:     Will Deacon <will@...nel.org>
Cc:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        linux-stable <stable@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        Catalin Marinas <catalin.marinas@....com>,
        Dan Carpenter <dan.carpenter@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, Shuah Khan <shuah@...nel.org>
Subject: Re: arm64: fp-stress: BUG: KFENCE: memory corruption in fpsimd_release_task

Hello!

On Mon, 26 Jun 2023 at 08:42, Will Deacon <will@...nel.org> wrote:
>
> On Thu, May 25, 2023 at 07:21:24PM +0530, Naresh Kamboju wrote:
> > On Tue, 23 May 2023 at 03:42, Mark Brown <broonie@...nel.org> wrote:
> > > On Tue, May 16, 2023 at 11:58:40AM +0530, Naresh Kamboju wrote:
> > > > Test log links:
> > > > ========
> > > >
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.28-240-gb82733c0ff99/testrun/17007082/suite/log-parser-test/test/check-kernel-kfence/log
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.28-240-gb82733c0ff99/testrun/17007082/suite/log-parser-test/tests/
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.28-240-gb82733c0ff99/testrun/17007268/suite/kselftest-arm64/tests/
> > > >
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.3.y/build/v6.3.2-247-g5a952cfef67c/testrun/17015127/suite/log-parser-test/test/check-kernel-bug/log
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.3.y/build/v6.3.2-247-g5a952cfef67c/testrun/17015127/suite/log-parser-test/tests/
> > > >  - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.3.y/build/v6.3.2-247-g5a952cfef67c/testrun/17015127/suite/kselftest-arm64/tests/
> > >
> > > None of these seem to provide me with information like what kernel
> > > config was used but I did manage to find
> > >
> > >   https://storage.tuxsuite.com/public/linaro/lkft/builds/2Pq5NvLiBcWRMuy6lXftDVQMvca/config
> > >
> > > which might be it?  Or one of them?  However even trying to use that I'm
> > > unable to reproduce issues with either the FVP or qemu.
> >
> > You got the right config file which we are using for testing
> > FVP selftests.
>
> Sadly, the config link above no longer works (404 file not found).
>
> However, I notice that the failure still seems to occur with 6.4:
>
> https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v6.4/testrun/17767612/suite/log-parser-test/tests/
>
> Please can you point me at the config file for that run? I can't figure
> out which one I need from the web interface.

Kernel artifacts for that test run can be found here:
  https://storage.tuxsuite.com/public/linaro/lkft/builds/2Ricfkwzy9jwZnHXNOetymU5t44/

(The labyrinth can be traversed this way: I went from that testrun
link, then test details [clicking on "check-kernel-kfence — FAIL"],
then "job_url", then "build", then "tuxbuild directory".)

Greetings!

Daniel Díaz
daniel.diaz@...aro.org