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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 4CCBCC433F5 for ; Thu, 16 Sep 2021 08:49:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D511661251 for ; Thu, 16 Sep 2021 08:49:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D511661251 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 686DD6B0071; Thu, 16 Sep 2021 04:49:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 636A26B0072; Thu, 16 Sep 2021 04:49:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 54C60900002; Thu, 16 Sep 2021 04:49:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0148.hostedemail.com [216.40.44.148]) by kanga.kvack.org (Postfix) with ESMTP id 48F466B0071 for ; Thu, 16 Sep 2021 04:49:40 -0400 (EDT) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id CBEE42FDF6 for ; Thu, 16 Sep 2021 08:49:39 +0000 (UTC) X-FDA: 78592813278.13.2CEE647 Received: from mail-ot1-f52.google.com (mail-ot1-f52.google.com [209.85.210.52]) by imf26.hostedemail.com (Postfix) with ESMTP id 7BFB620019E8 for ; Thu, 16 Sep 2021 08:49:39 +0000 (UTC) Received: by mail-ot1-f52.google.com with SMTP id x10-20020a056830408a00b004f26cead745so7389388ott.10 for ; Thu, 16 Sep 2021 01:49:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vIP749jeRM51PP+EheT1+GJQiFSryXau4Nw9wt2MR9o=; b=ib0a2fLDYWnjqZoTZ2hv2mqWpo0hxUiuak1z8zTBm5r0xV/7KaW/JbUV25PKvnGvTy bFs639CZnjaV49OWYkXGOaipp0xWiE3EQFig/rlZBYZVLal2Dz23Y7n+hcBfSbvJyGq6 0x/9XTrelZbk/G7wpUU/6D37k2Qg9f2IxTOirWCacrGFIj29wrJz6nvF2J52/AZVpVOl VcA8YnGAzh0qDhwLtiL93l5UlzwE6Fh1955ClLCsOouv38pRaQebmWv/fzIu4CZhbSn4 jyf5Jex3LTofcZwSiNA3D0omXfwDoSopXsQ2EyH2Sw0HDn4INDyfoivTV8hGI15Hb06h hCeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vIP749jeRM51PP+EheT1+GJQiFSryXau4Nw9wt2MR9o=; b=4SnFU83w54DxsermhJYc4QmjWq08E4dyxeLvy3BhKgttsBYsylbzJ+YU5NjuNrQOPf fHvNgfgICz+zxmni58lVhQpvZ6ga+k4AJsNbBpHN1O926KzDWK4FJnRvTHOne58YmGoh Ng1aq6mKbLZQgNw32Ulx8ipMeMCHMoMDLqJhSsBEiQo9IhHCqiVTdT8ts91SJdSNFQQ1 g15G+QmlmJiL/ROlmfINzI1LCUNF3QaRu5ZnlkKIj7wQm55IPRl4aKVhhMs5jP55XjMt WIO9S98q+JuF3ZG+KnWuJySSgI45ODVvH6FEGMmKeu5FZgwUkxMr16DON6mkgNyVLa/b v/yg== X-Gm-Message-State: AOAM532igRT5OdKwCL1cVV4HmptpSwGs3+NDAGvQsrc0HTtShCfQKAKb OkgfCsHZSD8kFAKVRJTfr0IXhzEZ/yIz/05M6jhN/Q== X-Google-Smtp-Source: ABdhPJz3110GOQH0TXL0WZg5/2ZsApOW/cZ8gCqx6RYVU3IQy90hLLmlWEzVPbFdklWHNIUmQvOmVKas6KBPlKGgdGQ= X-Received: by 2002:a9d:71db:: with SMTP id z27mr3758946otj.292.1631782178670; Thu, 16 Sep 2021 01:49:38 -0700 (PDT) MIME-Version: 1.0 References: <20210421105132.3965998-1-elver@google.com> <20210421105132.3965998-3-elver@google.com> <6c0d5f40-5067-3a59-65fa-6977b6f70219@huawei.com> In-Reply-To: From: Marco Elver Date: Thu, 16 Sep 2021 10:49:27 +0200 Message-ID: Subject: Re: [PATCH v2 2/3] kfence: maximize allocation wait timeout duration To: Kefeng Wang Cc: akpm@linux-foundation.org, glider@google.com, dvyukov@google.com, jannh@google.com, mark.rutland@arm.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, hdanton@sina.com Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=ib0a2fLD; spf=pass (imf26.hostedemail.com: domain of elver@google.com designates 209.85.210.52 as permitted sender) smtp.mailfrom=elver@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 7BFB620019E8 X-Stat-Signature: dftcq371snmtp4bnb9o1tbzfcfx439eo X-HE-Tag: 1631782179-658604 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 16 Sept 2021 at 03:20, Kefeng Wang wrote: > Hi Marco, > > We found kfence_test will fails on ARM64 with this patch with/without > CONFIG_DETECT_HUNG_TASK, > > Any thought ? Please share log and instructions to reproduce if possible. Also, if possible, please share bisection log that led you to this patch. I currently do not see how this patch would cause that, it only increases the timeout duration. I know that under QEMU TCG mode, there are occasionally timeouts in the test simply due to QEMU being extremely slow or other weirdness.