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From:   Anders Roxell <anders.roxell@linaro.org>
Date:   Thu, 2 Feb 2023 16:29:47 +0100
Message-ID: <CADYN=9+=p0cYu63feXfZVXZTGruJP_i5dA3AuP0G6Fh_rfQO0g@mail.gmail.com>
Subject: Re: selftests: memfd: run_hugetlbfs_test.sh - invalid opcode: 0000
 [#1] PREEMPT SMP
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Mike Kravetz <mike.kravetz@oracle.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        linux-stable <stable@vger.kernel.org>,
        lkft-triage@lists.linaro.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Shuah Khan <shuah@kernel.org>, Jeff Xu <jeffxu@google.com>,
        Joel Fernandes <joel@joelfernandes.org>,
        Pranith Kumar <bobby.prani@gmail.com>,
        David Herrmann <dh.herrmann@gmail.com>
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On Thu, 2 Feb 2023 at 15:54, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> Hi Mike,
>
> On Wed, 25 Jan 2023 at 06:04, Mike Kravetz <mike.kravetz@oracle.com> wrote:
> >
> > On 01/05/23 15:14, Naresh Kamboju wrote:
> > > While running selftests: memfd: run_hugetlbfs_test.sh on qemu_i386 and i386 the
> > > following invalid opcode was noticed on stable-rc 6.1 and  6.0.
> > >
> > > This is always reproducible on stable-rc 6.1 and  6.0 with qemu_i386 and i386.
> > > Build, config and test log details provided in the below links [1].
> >
> > Hello Naresh,
> >
> > I have tried to create this issue a few times without success.  Since I
> > do not have i386 HW, I am using qemu_i386.  If I use the supplied config,
> > my kernel does not boot.  I then try to modify config options which I
> > think are not relevant.  By the time I get to a config that will boot, I
> > can not recreate the issue. :(
> >
> > Just curious if you have any suggestions?  Or, Wondering if anyone else has
> > suggestions on how to proceed?
>
> Please install tuxmake and run attached script to reproduce reported issues,
> $ pip3 install tuxmake

oops, a typo, should be 'tuxrun' not 'tuxmake'.

https://tuxrun.org/

Cheers,
Anders

> $ ./memfd-crash-test-qemu-i386.sh
>
> This script downloads kernel Image and rootfs and runs run_hugetlbfs_test.sh.
> If you have any questions please get back to me.
> For your reference I have attached logs.txt
>
> > --
> > Mike Kravetz