From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1896BC4743D for ; Tue, 8 Jun 2021 09:39:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECD6F61263 for ; Tue, 8 Jun 2021 09:39:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230330AbhFHJlr (ORCPT ); Tue, 8 Jun 2021 05:41:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:54829 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbhFHJlq (ORCPT ); Tue, 8 Jun 2021 05:41:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1623145193; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9LlW99M3AUTZm+NlelDfggWF0/pPvt2/vMj5NeCrGTM=; b=Nv9RQfFW0OlIE0okbxoYubPT6Rf7fyjNQ/MqcUyOJ0RztUAGWgjl4iFGQBA3BH7q8POIK4 PRF7ctvlrc7O7gGbAUf7u4QIs6q0d/r9yYddIASKoXgQYi19FmPtsP8XXA1BF/px3CCBFi Lful9PJW2GBw25gzsBMYO5DTU0536F4= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-374-KSeVcUuzNDy35M0-ILw-og-1; Tue, 08 Jun 2021 05:39:51 -0400 X-MC-Unique: KSeVcUuzNDy35M0-ILw-og-1 Received: by mail-wr1-f71.google.com with SMTP id e9-20020a5d6d090000b0290119e91be97dso951351wrq.1 for ; Tue, 08 Jun 2021 02:39:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=9LlW99M3AUTZm+NlelDfggWF0/pPvt2/vMj5NeCrGTM=; b=XO0YNjsFLAvP1heHP2fXCs/F60WPPN9AAMXtcxB6En1zrwECEXAvAjZ2BnD3vrfZgA vOWppnXlAr0kHpOnc4xtFWipWVm9dSa9/clp18xnE1s3znDkzcf164pjj/dVlmwgCgNb 2pmgVjPYPNbyf32Cent1KEfB+cmB4qE+0rHZpsfpXA9FM2tEwSMOGJ23rp65LqJgBXxX UpZdUtYksQSIiy/s4NjW0f6wuT7lNdU5+uZJdC9Oh9zFiHl2DeugErZ6Of0ww13rWr1r vR+CebLDYGJH3eTLhIFJYvuGgc7UGxSBkOQ/malIj9xVipQAQKtJP24ZXJLtAnYmWuev XOvQ== X-Gm-Message-State: AOAM532JJRb2avTgUtSaAdkasqGV0Bux1f/oB6dBlbH7tHTpPWRqUfL1 tTzYCyQU9epIPscqrgF/IUtoGFTWAqZ5xl35EfYMibMqJ4HLL/qt+CgnEGsyU5n738p3/2jiMX/ tPK0Q80/REhKA64DUPROorxg= X-Received: by 2002:a05:600c:354f:: with SMTP id i15mr1628693wmq.131.1623145190486; Tue, 08 Jun 2021 02:39:50 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzngI3VjMKc7cvpd9cz6cCLbAhO3CLKRxkuY/0NW1czdH/+MMSM5D+Gpmg2fYjW6vD+Mjj0Fg== X-Received: by 2002:a05:600c:354f:: with SMTP id i15mr1628684wmq.131.1623145190355; Tue, 08 Jun 2021 02:39:50 -0700 (PDT) Received: from localhost (cpc111743-lutn13-2-0-cust979.9-3.cable.virginm.net. [82.17.115.212]) by smtp.gmail.com with ESMTPSA id q11sm18832988wrx.80.2021.06.08.02.39.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Jun 2021 02:39:49 -0700 (PDT) Date: Tue, 8 Jun 2021 10:39:49 +0100 From: Aaron Tomlin To: Michal Hocko Cc: Waiman Long , Shakeel Butt , Linux MM , Andrew Morton , Vlastimil Babka , LKML Subject: Re: [RFC PATCH] mm/oom_kill: allow oom kill allocating task for non-global case Message-ID: <20210608093949.szz3e6ucpf7mztxr@ava.usersys.com> X-PGP-Key: http://pgp.mit.edu/pks/lookup?search=atomlin%40redhat.com X-PGP-Fingerprint: 7906 84EB FA8A 9638 8D1E 6E9B E2DE 9658 19CC 77D6 References: <20210607163103.632681-1-atomlin@redhat.com> <6d23ce58-4c4b-116a-6d74-c2cf4947492b@redhat.com> <353d012f-e8d4-c54c-b33e-54737e1a0115@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 2021-06-08 08:22 +0200, Michal Hocko wrote: > You are saying that there are other OOM kills going on. Yes. > Are they all for the same memcg? No. > Is it possible the only eligible task has been killed and oom reaped > already? Unfortunately, as mentioned by Waiman, no other task is suitable for "selection" due to the OOM score (i.e. OOM_SCORE_ADJ_MIN;) that said, I need access to the vmcore to check i.e. mm.flags - I'll get back to you as soon as I can. Kind regards, -- Aaron Tomlin