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

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Date:   Fri, 21 Jun 2019 15:55:07 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Qian Cai <cai@....pw>
Cc:     akpm@...ux-foundation.org, brho@...gle.com, kernelfans@...il.com,
        dave.hansen@...el.com, rppt@...ux.ibm.com, peterz@...radead.org,
        mpe@...erman.id.au, mingo@...e.hu, osalvador@...e.de,
        luto@...nel.org, tglx@...utronix.de, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next v2] mm/hotplug: fix a null-ptr-deref during NUMA
 boot

On Fri 21-06-19 09:17:58, Qian Cai wrote:
> Sigh...
> 
> I don't see any benefit to keep the broken commit,
> 
> "x86, numa: always initialize all possible nodes"
> 
> for so long in linux-next that just prevent x86 NUMA machines with any memory-
> less node from booting.
> 
> Andrew, maybe it is time to drop this patch until Michal found some time to fix
> it properly.

Yes, please drop the patch for now, Andrew. I thought I could get to
this but time is just scarce.
-- 
Michal Hocko
SUSE Labs