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,HEADER_FROM_DIFFERENT_DOMAINS,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 6F4A1C433E0 for ; Fri, 7 Aug 2020 06:24:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35E0F22C9F for ; Fri, 7 Aug 2020 06:24:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596781489; bh=0pwmDf6RKAj4GsHA6WJNrrGdfM0GOFri15aa4i5FvDo=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=rUhdyvN2zOhu9a5kOQALNoMaWZCpO+6Yj1SPaikF+6xFLjl6hLYj67rTYxL3f4nlt HDSBqB0yazH6W/xvcAmdDAy36BxfBgw4v8OVn8xTRG+G0XTLDBqkeTT68xj/pRfOc/ eU6Xk74Y9H325ciDpTPZ3ZonQ985cd9Tr1B1vaTc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726282AbgHGGYs (ORCPT ); Fri, 7 Aug 2020 02:24:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:33642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725379AbgHGGYs (ORCPT ); Fri, 7 Aug 2020 02:24:48 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3A4B422CAE; Fri, 7 Aug 2020 06:24:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596781488; bh=0pwmDf6RKAj4GsHA6WJNrrGdfM0GOFri15aa4i5FvDo=; h=Date:From:To:Subject:In-Reply-To:From; b=SA/e0f9QtGxKy2uftQuH6LgKWDOyTPgr9ii53Wdd+/75hXLUSKiORySS3KOzyUz4J BDXL21lYgUI2cU+nSI0qeQrKn2RvE9eTuFcvq57pyShGWwdCIidHekwCnftbQSIZVa EBGqcnWLnKg6icd76F4/qLrHXdkFYZrjhhJevNo0= Date: Thu, 06 Aug 2020 23:24:46 -0700 From: Andrew Morton To: akpm@linux-foundation.org, andreyknvl@google.com, aryabinin@virtuozzo.com, corbet@lwn.net, dvyukov@google.com, glider@google.com, jiangshanlai@gmail.com, joel@joelfernandes.org, josh@joshtriplett.org, linux-mm@kvack.org, mathieu.desnoyers@efficios.com, matthias.bgg@gmail.com, mm-commits@vger.kernel.org, paulmck@kernel.org, torvalds@linux-foundation.org, walter-zh.wu@mediatek.com Subject: [patch 133/163] kasan: update documentation for generic kasan Message-ID: <20200807062446.EMPtGEWYE%akpm@linux-foundation.org> In-Reply-To: <20200806231643.a2711a608dd0f18bff2caf2b@linux-foundation.org> User-Agent: s-nail v14.8.16 Sender: mm-commits-owner@vger.kernel.org Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Walter Wu Subject: kasan: update documentation for generic kasan Generic KASAN will support to record the last two call_rcu() call stacks and print them in KASAN report. So that need to update documentation. Link: http://lkml.kernel.org/r/20200601051111.1359-1-walter-zh.wu@mediatek.com Signed-off-by: Walter Wu Reviewed-by: Dmitry Vyukov Tested-by: Dmitry Vyukov Reviewed-by: Andrey Konovalov Cc: Andrey Ryabinin Cc: Alexander Potapenko Cc: Jonathan Corbet Cc: Matthias Brugger Cc: "Paul E . McKenney" Cc: Josh Triplett Cc: Mathieu Desnoyers Cc: Lai Jiangshan Cc: Joel Fernandes Signed-off-by: Andrew Morton --- Documentation/dev-tools/kasan.rst | 3 +++ 1 file changed, 3 insertions(+) --- a/Documentation/dev-tools/kasan.rst~kasan-update-documentation-for-generic-kasan +++ a/Documentation/dev-tools/kasan.rst @@ -190,6 +190,9 @@ function calls GCC directly inserts the This option significantly enlarges kernel but it gives x1.1-x2 performance boost over outline instrumented kernel. +Generic KASAN prints up to 2 call_rcu() call stacks in reports, the last one +and the second to last. + Software tag-based KASAN ~~~~~~~~~~~~~~~~~~~~~~~~ _