linux-kernel - Re: [PATCH] mm: fix null pointer dereference in mem_cgroup

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Message-ID: <20180611141925.GC1507@cmpxchg.org>
Date:   Mon, 11 Jun 2018 10:19:25 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Roman Gushchin <guro@...com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>, linux-mm@...ck.org,
        kernel-team@...com, linux-kernel@...r.kernel.org,
        Michal Hocko <mhocko@...nel.org>
Subject: Re: [PATCH] mm: fix null pointer dereference in mem_cgroup_protected

On Fri, Jun 08, 2018 at 06:06:07PM +0100, Roman Gushchin wrote:
> Shakeel reported a crash in mem_cgroup_protected(), which
> can be triggered by memcg reclaim if the legacy cgroup v1
> use_hierarchy=0 mode is used:
...
> Reported-by: Shakeel Butt <shakeelb@...gle.com>
> Signed-off-by: Roman Gushchin <guro@...com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: Michal Hocko <mhocko@...nel.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>

Acked-by: Johannes Weiner <hannes@...xchg.org>