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Subject: Re: i386: selftests: vm: compaction_test: BUG: kernel NULL pointer
 dereference, address: 00000000
To:     Naresh Kamboju <naresh.kamboju@linaro.org>,
        open list <linux-kernel@vger.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>, linux-mm <linux-mm@kvack.org>
Cc:     lkft-triage@lists.linaro.org, Shuah Khan <shuah@kernel.org>,
        Anders Roxell <anders.roxell@linaro.org>,
        Christophe Leroy <christophe.leroy@c-s.fr>,
        Andrew Morton <akpm@linux-foundation.org>,
        Leonardo Bras <leonardo@linux.ibm.com>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Peter Xu <peterx@redhat.com>,
        Mike Rapoport <rppt@linux.vnet.ibm.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Jules Irenge <jbi.octave@gmail.com>,
        "Huang, Ying" <ying.huang@intel.com>,
        Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
        Rik van Riel <riel@surriel.com>,
        Hugh Dickins <hughd@google.com>,
        Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Mateusz Nosek <mateusznosek0@gmail.com>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Kees Cook <keescook@chromium.org>,
        Vlastimil Babka <vbabka@suse.cz>
References: <CA+G9fYsRGvkqtpdGv_aVr+Hn17KgYq04Q=EE=pB774qVxRqOeg@mail.gmail.com>
From:   Dave Hansen <dave.hansen@intel.com>
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Message-ID: <bf5efd27-50bb-d2f1-abd3-cfbaff1bc5d4@intel.com>
Date:   Mon, 13 Apr 2020 10:53:12 -0700
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Sender: linux-kernel-owner@vger.kernel.org
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On 4/11/20 11:54 PM, Naresh Kamboju wrote:
> On Linux mainline kernel 5.6.0 running kselftest vm compaction_test on i386
>  kernel running on x86_64 devices we have noticed this Kernel BUG followed by
> Kernel panic.

Any chance we could talk you into doing a bisect on this sucker?

The "Bad swap file entry" message could be a lot of things.