linux-kernel - Re: [PATCH v3] mm: fix panic in __alloc

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Message-ID: <YbHCT1r7NXyIvpsS@dhcp22.suse.cz>
Date:   Thu, 9 Dec 2021 09:46:07 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Alexey Makhalov <amakhalov@...are.com>
Cc:     Dennis Zhou <dennis@...nel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.de>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH v3] mm: fix panic in __alloc_pages

On Thu 09-12-21 02:16:17, Alexey Makhalov wrote:
> This patch calls alloc_percpu() from setup_arch() while percpu
> allocator is not yet initialized (before setup_per_cpu_areas()).

Yeah, I haven't realized the pcp is not available. I was not really sure
about that. Could you try with the alloc_percpu dropped?

Thanks for testing!
-- 
Michal Hocko
SUSE Labs