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Date: Thu, 7 Dec 2017 09:44:57 +0100
From: Michal Hocko <mhocko@kernel.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: David Rientjes <rientjes@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org
Subject: Re: Multiple oom_reaper BUGs: unmap_page_range racing with exit_mmap
Message-ID: <20171207084457.GD20234@dhcp22.suse.cz>
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On Thu 07-12-17 09:28:01, Michal Hocko wrote:
[...]
> oom_reaper		oom_victim		task
> 						mmget_not_zero
> 			exit_mmap

bleh, this should have been do_exit

> 			  mmput
> __oom_reap_task_mm				mmput
>   						  __mmput
> 						    exit_mmap
> 						      remove_vma
>   unmap_page_range
-- 
Michal Hocko
SUSE Labs