From: Chris Down <chris@chrisdown.name>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Roman Gushchin <guro@fb.com>,
linux-mm@kvack.org
Subject: Re: [linux-next-20190131] NULL pointer dereference at shrink_node_memcg.
Date: Thu, 31 Jan 2019 23:28:36 -0500 [thread overview]
Message-ID: <20190201042836.GA1529@chrisdown.name> (raw)
In-Reply-To: <201902010337.x113b72e028186@www262.sakura.ne.jp>
Hey Tetsuo,
Tetsuo Handa writes:
>Commit 8a907cdf0177ab40 ("mm, memcg: proportional memory.{low,min} reclaim")
>broke global reclaim by kdump kernel due to NULL pointer dereference at
>
> protection = mem_cgroup_protection(memcg);
>
>. Please fix.
Oh yeah, memcg is null if memcg is disabled at run time but is compiled in (so
this works with CONFIG_MEMCG and !CONFIG_MEMCG, but not CONFIG_MEMCG +
cgroup_disable=memory).
A fix will be out shortly, thanks.
prev parent reply other threads:[~2019-02-01 4:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-01 3:37 [linux-next-20190131] NULL pointer dereference at shrink_node_memcg Tetsuo Handa
2019-02-01 4:28 ` Chris Down [this message]
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