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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 67056C433E7 for ; Wed, 2 Sep 2020 14:53:06 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 333ED2078E for ; Wed, 2 Sep 2020 14:53:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="MNWkd4xz"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="u1QrlX4t" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 333ED2078E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2XltSqVx126S+Te7WiSDcBLSGhvTpEKgyYpQAhmJ/ks=; b=MNWkd4xzxO18fBgt42qVeLPy2 j1m8MaBI8A1gSjYnLecSZCFL3WLz9pbwkoojC2QPrS814SgyjZxbTPKR3CdIUZW9Ptim6XLOSyUc+ POVCdY8aQgbWYSW8A+xwN8SKuNWfgmnrrU94qCDAtmklBIyQw827AXm6AGPeHzl/dUGIOzr2Yo7SY fBQTeEl6pmk7thlLc3vmA9/U++291bYLhA2UrpM42XRY5eR0qhdkhxIXHfLZOSePeU6+hjjfJqbvY hUhw1SEqfgBzNqEi0oyNHLudLm1YKVkThopvODqf6tuk8MGTDNvYZAOopVlGwnT1k2Ls5hMKGZxVT XrD+6rrzA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDU8A-0001zY-GC; Wed, 02 Sep 2020 14:52:58 +0000 Received: from mail-qk1-x742.google.com ([2607:f8b0:4864:20::742]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDU87-0001yM-51; Wed, 02 Sep 2020 14:52:55 +0000 Received: by mail-qk1-x742.google.com with SMTP id o64so4560724qkb.10; Wed, 02 Sep 2020 07:52:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=Umk5Ulvu4oLoYIO+HUXZ2g8XNW9wJ6mMmUfCXe6cwzE=; b=u1QrlX4tBu3SeweQyeFvKcbd9BBbzKPHcAtreRTlE33njRMc4xrp/YRss9Ci+1XqX+ 0xWJ6n7UQr5uBOb+HLR1Gi1qqN/3rG4mHZvtQlPi50OjxzIAQ5GVt57+5LQn4Od+lzjl jYGMV86QT9ZunHZEH/BhYUBDXSQblsoWLudOKuTH8j1YF7k27tHzvRVh8Y4hgcDS/6PC +Zk1u8BeT7PHGtED6kcFwnHyMDUoOv9vK31Qca6YjTjUNyAy3yyeOHMxwL4c1B60duVJ qXoKMXatMGF3ZaXHvIDSU0tDAHb6hDyN9jRZhvc6r0HNEm2oANhB8njQAruZnTk08Egb XX1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=Umk5Ulvu4oLoYIO+HUXZ2g8XNW9wJ6mMmUfCXe6cwzE=; b=BPXg5TeMDsnIP7tNjqbCxjQJvFi85rM/xDZSJKHSWG1Z6wCuN4/hjt6PqVGh9WHBTc qNwYx0xPoxDIsDiZKWMGSO5cWXsMMnUhLHolByqFbsY/p6JwXnaRjDoxGrFWi07jqBOb kNt9ioqYGRvJW3iaaVQgXdr3Fe2ZsVu4Bb0wh3+fmWUbbJJDdqpBX5KoY9Zq2LeEiJUO CVNuz+FG6gI/K8Xao/pTjMZ2t0hNczWlk7Ong/Q8u/9D7wewRMBpqixdVvbfXQpgWjte OuZIYOk/Gy5WjklXrzfKhoe45/JcP3Sf07Ie6IOlEj2az/krADkY4A5bpTrGfxJcGzn3 JOaQ== X-Gm-Message-State: AOAM530vLNkm7+J0nJ3H1GGWdpkchxhIHXcguB+a1ryAuh0OQigGqvB1 pE3aP383Q48bJCjdfW7eskn0PQMLc8rKCg== X-Google-Smtp-Source: ABdhPJwtF2MnHLtEgYqsM1xBk1VrAbk4U4yp0K+SVFwUEGI/lp1d3JSafaq/2JyqeLrKZqK4fC46LQ== X-Received: by 2002:a37:8b01:: with SMTP id n1mr7286182qkd.62.1599058369875; Wed, 02 Sep 2020 07:52:49 -0700 (PDT) Received: from localhost ([2620:10d:c091:480::1:a198]) by smtp.gmail.com with ESMTPSA id r11sm4772987qtt.2.2020.09.02.07.52.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Sep 2020 07:52:49 -0700 (PDT) Date: Wed, 2 Sep 2020 10:52:41 -0400 From: Tejun Heo To: Walter Wu Subject: Re: [PATCH v3 2/6] workqueue: kasan: record workqueue stack Message-ID: <20200902145241.GG4230@mtj.thefacebook.com> References: <20200825015833.27900-1-walter-zh.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200825015833.27900-1-walter-zh.wu@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200902_105255_232129_4B2ABB08 X-CRM114-Status: GOOD ( 12.70 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marco Elver , wsd_upstream , Lai Jiangshan , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-mediatek@lists.infradead.org, Alexander Potapenko , linux-arm-kernel@lists.infradead.org, Matthias Brugger , Andrey Ryabinin , Andrew Morton , Dmitry Vyukov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Tue, Aug 25, 2020 at 09:58:33AM +0800, Walter Wu wrote: > Records the last two enqueuing work call stacks in order to print them > in KASAN report. It is useful for programmers to solve use-after-free > or double-free memory workqueue issue. > > For workqueue it has turned out to be useful to record the enqueuing > work call stacks. Because user can see KASAN report to determine > whether it is root cause. They don't need to enable debugobjects, > but they have a chance to find out the root cause. > > Signed-off-by: Walter Wu > Suggested-by: Marco Elver > Cc: Andrey Ryabinin > Cc: Dmitry Vyukov > Cc: Alexander Potapenko > Cc: Tejun Heo > Cc: Lai Jiangshan Acked-by: Tejun Heo Thanks. -- tejun _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek