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[23.128.96.18]) by mx.google.com with ESMTP id gb1si2765063ejc.89.2021.09.16.01.51.57; Thu, 16 Sep 2021 01:52:20 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20210112 header.b=ib0a2fLD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235418AbhIPIvI (ORCPT + 99 others); Thu, 16 Sep 2021 04:51:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53650 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235495AbhIPIvB (ORCPT ); Thu, 16 Sep 2021 04:51:01 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7783CC0613C1 for ; Thu, 16 Sep 2021 01:49:39 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id c19-20020a9d6153000000b0051829acbfc7so7406000otk.9 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=4GgZhX9RbETXPmQ8ftvrfJKE7uRAJbZm0ONGCVQIJyr1MlsrzBCFia5+RFH70HqIvt LU6Gd4IWC18DNt2JNdsHoTJjLSVlv0UESzpMC6Br8F/gO8JNdTuuoMIHk1rDP0TJNZeu pDIVqTAGXW2UCBOnkerZbdjDkGTTmRvU3NwspEnU48AIc1ED59k9m21fQXSn8bgx5NFA Y5L7llpnmkPDmDI9lE8iTx8EHlP4uvGC2HgF8I7X094AGE1ryFTZuxXrdkC++bdxq3hN 7CbEv4ys1wEvSDPP1yyMbMCDxTC2ShqY2JpX+YOycTxHQTcgJ+s5SeQveTzH5PaqEjj2 5ukg== X-Gm-Message-State: AOAM5324SDAIzUmss2Qiwm4aHzm4WisytjE+ZbpgLRPNE1sjOgjoXM8P 3Oj7+RpRYIKxBr5AwYTcHwY+YYVeTJwhDtYh9DB50Q== 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" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.