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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 8B036C433DF for ; Tue, 19 May 2020 02:30:21 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4EC5E20715 for ; Tue, 19 May 2020 02:30:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="IpBVrVlf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="CwEr/lgM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4EC5E20715 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=UUYbjqI5G85YxmwCohtHgPx/l0lNP/mcm/+RBXed9wA=; b=IpBVrVlfD/a2VI e2tiKG0NE/uSHob9LP3Zc3fQSxYThmTz45PXmC1MFZN/TMb9tpEU7hED0CVRJB09IKF0pYyfUylPJ 6St275lECGSYPErbsftuq6nCPtKWPQcEVOzSaTPXnzcoY/tIoV2veX5+i7glJXZyNqbccNdIfpBSL 2iHl3oxmI6JghYVmg/hYHoll0DvfVfSax0LAlwLULHDBS0agdWz021/wv7EJLswvhzhKlUt1fZQv+ UKMmD9YiVD2w6IXAVg6RADqPtQfFsknS67i1h0uEBSF2zYxwsLiNlMdyI4bOlnP4aXNJaG552mQbk dcFFjnGTK0tPYrv32cUQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jas1C-0007ZL-7g; Tue, 19 May 2020 02:30:10 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jas18-00070a-DU; Tue, 19 May 2020 02:30:07 +0000 X-UUID: f085b9eccf8240a6be8e9719f70bdf9a-20200518 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=+1T6h4ks8LG74RTkqrEoFP7s8tKRSn96p/OdYqATlnk=; b=CwEr/lgMRQcsWV12OU5NpdJX5g/an5AUTivJgbQRzXex6S+3m1n961tjFeQkSvpPfK7EfQdC9W/cgt9dvJufMh+3qKaMKhdAS3x3mnW1zRE3LEr9YjIWsvdGSnRr/KXUgL0wS+KkGZSiaMW6cA2b8dRy30BzPozTz6tj6an2awQ=; X-UUID: f085b9eccf8240a6be8e9719f70bdf9a-20200518 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1787550371; Mon, 18 May 2020 18:30:06 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 18 May 2020 19:26:28 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 19 May 2020 10:26:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 19 May 2020 10:26:27 +0800 From: Walter Wu To: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Jonathan Corbet Subject: [PATCH v4 4/4] kasan: update documentation for generic kasan Date: Tue, 19 May 2020 10:26:26 +0800 Message-ID: <20200519022626.24305-1-walter-zh.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200518_193006_470607_255C653F X-CRM114-Status: UNSURE ( 7.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Walter Wu , wsd_upstream , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Generic KASAN will support to record the last two call_rcu() call stacks and print them in KASAN report. So need to update documentation. Signed-off-by: Walter Wu Cc: Andrey Ryabinin Cc: Dmitry Vyukov Cc: Alexander Potapenko Cc: Jonathan Corbet --- Documentation/dev-tools/kasan.rst | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst index c652d740735d..fede42e6536b 100644 --- a/Documentation/dev-tools/kasan.rst +++ b/Documentation/dev-tools/kasan.rst @@ -193,6 +193,9 @@ function calls GCC directly inserts the code to check the shadow memory. 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 ~~~~~~~~~~~~~~~~~~~~~~~~ -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel