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From: Dmitry Vyukov <dvyukov@google.com>
Date: Wed, 20 Dec 2017 10:24:51 +0100
Message-ID: <CACT4Y+achWa2fCT9LWeHas6gOLtMwk28XZLkkfFF++D1X=9mVw@mail.gmail.com>
Subject: Re: BUG: unable to handle kernel NULL pointer dereference in __list_del_entry_valid
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Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Michal Hocko <mhocko@kernel.org>
Cc: syzbot <bot+83f46cd25e266359cd056c91f6ecd20b04eddf42@syzkaller.appspotmail.com>, Andrew Morton <akpm@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, LKML <linux-kernel@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, Mel Gorman <mgorman@techsingularity.net>, Minchan Kim <minchan@kernel.org>, Shakeel Butt <shakeelb@google.com>, syzkaller-bugs@googlegroups.com, ying.huang@intel.com, syzkaller <syzkaller@googlegroups.com>

On Wed, Dec 20, 2017 at 10:20 AM, Michal Hocko <mhocko@kernel.org> wrote:
> On Tue 19-12-17 17:40:19, Dmitry Vyukov wrote:
>> On Tue, Dec 19, 2017 at 2:42 PM, Michal Hocko <mhocko@kernel.org> wrote:
>> >> >> > Can we silence this duplicates [1] please?
>> >> >> >
>> >> >> > [1] http://lkml.kernel.org/r/001a1140f57806ebef05608b25a5@google.com
>> >> >>
>> >> >> Hi Michal,
>> >> >>
>> >> >> What exactly do you mean?
>> >> >>
>> >> >> These 2 are the same email with the same Message-ID just on different
>> >> >> mailing lists. I don't see anything wrong here.
>> >> >
>> >> > Hmm the other one has Message-id: 001a1140f57806ebef05608b25a5@google.com
>> >> > while this one has 001a11452568f5857c0560b0dc0e@google.com
>> >>
>> >> Ah, I see.
>> >> These are reported separately because the crashes are titled
>> >> differently. Kernel titled one as "general protection fault" and
>> >> another as "BUG: unable to handle kernel NULL pointer dereference".
>> >
>> > Ahh, OK, so I've missed that part ;) I just thought it was duplicate
>> > because the report seemed very familiar.
>>
>>
>> So are these duplicates? If yes, we need to tell this syzbot:
>
> It seems so.

Please tell this directly to syzbot next time.

#syz dup: general protection fault in __list_del_entry_valid (2)

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