From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f71.google.com (mail-wm0-f71.google.com [74.125.82.71]) by kanga.kvack.org (Postfix) with ESMTP id 0A93D6B0038 for ; Thu, 7 Dec 2017 03:45:00 -0500 (EST) Received: by mail-wm0-f71.google.com with SMTP id t15so3043611wmh.3 for ; Thu, 07 Dec 2017 00:44:59 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id c15si1319230wra.5.2017.12.07.00.44.58 for (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 07 Dec 2017 00:44:58 -0800 (PST) Date: Thu, 7 Dec 2017 09:44:57 +0100 From: Michal Hocko Subject: Re: Multiple oom_reaper BUGs: unmap_page_range racing with exit_mmap Message-ID: <20171207084457.GD20234@dhcp22.suse.cz> References: <20171206090019.GE16386@dhcp22.suse.cz> <201712070720.vB77KlBQ009754@www262.sakura.ne.jp> <20171207082801.GB20234@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171207082801.GB20234@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Tetsuo Handa Cc: David Rientjes , Andrew Morton , Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-mm@kvack.org 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org