linux-kernel - Re: [PATCH -next v2] mm/hotplug: fix a null-ptr-deref during NUMA boot

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Message-ID: <20190528182132.GH1658@dhcp22.suse.cz>
Date:   Tue, 28 May 2019 20:21:32 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Pingfan Liu <kernelfans@...il.com>
Cc:     Qian Cai <cai@....pw>, Andrew Morton <akpm@...ux-foundation.org>,
        Barret Rhoden <brho@...gle.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Ingo Molnar <mingo@...e.hu>,
        Oscar Salvador <osalvador@...e.de>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next v2] mm/hotplug: fix a null-ptr-deref during NUMA
 boot

On Thu 23-05-19 12:00:46, Pingfan Liu wrote:
[...]
> > Yes, but maybe it will pay great effort on it.
> >
> And as a first step, we can find a way to fix the bug reported by me
> and the one reported by Barret

Can we try http://lkml.kernel.org/r/20190513140448.GJ24036@dhcp22.suse.cz
for starter?
-- 
Michal Hocko
SUSE Labs