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Message-ID: <20171220100029.GH4831@dhcp22.suse.cz> Date: Wed, 20 Dec 2017 11:00:29 +0100 From: Michal Hocko <mhocko@...nel.org> To: Dmitry Vyukov <dvyukov@...gle.com> Cc: syzbot <bot+83f46cd25e266359cd056c91f6ecd20b04eddf42@...kaller.appspotmail.com>, Andrew Morton <akpm@...ux-foundation.org>, Johannes Weiner <hannes@...xchg.org>, LKML <linux-kernel@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>, Mel Gorman <mgorman@...hsingularity.net>, Minchan Kim <minchan@...nel.org>, Shakeel Butt <shakeelb@...gle.com>, syzkaller-bugs@...glegroups.com, ying.huang@...el.com, syzkaller <syzkaller@...glegroups.com> Subject: Re: BUG: unable to handle kernel NULL pointer dereference in __list_del_entry_valid On Wed 20-12-17 10:24:51, Dmitry Vyukov wrote: > On Wed, Dec 20, 2017 at 10:20 AM, Michal Hocko <mhocko@...nel.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@...nel.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@...gle.com > >> >> > while this one has 001a11452568f5857c0560b0dc0e@...gle.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) OK. -- Michal Hocko SUSE Labs
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