From patchwork Fri May 22 02:02:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Walter Wu X-Patchwork-Id: 11564351 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 142861391 for ; Fri, 22 May 2020 02:02:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D3848207F7 for ; Fri, 22 May 2020 02:02:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="W4d4mS/l" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3848207F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1F9C28000B; Thu, 21 May 2020 22:02:19 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 182DF80007; Thu, 21 May 2020 22:02:19 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 098F38000B; Thu, 21 May 2020 22:02:19 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0077.hostedemail.com [216.40.44.77]) by kanga.kvack.org (Postfix) with ESMTP id E37B580007 for ; Thu, 21 May 2020 22:02:18 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id A4B295DDB for ; Fri, 22 May 2020 02:02:18 +0000 (UTC) X-FDA: 76842705156.20.waves96_8878c2bd6143b X-Spam-Summary: 2,0,0,66320411798d406a,d41d8cd98f00b204,walter-zh.wu@mediatek.com,,RULES_HIT:41:355:379:421:541:800:960:973:988:989:1042:1185:1260:1277:1311:1313:1314:1345:1431:1437:1514:1515:1516:1518:1534:1541:1585:1711:1730:1747:1777:1792:1978:1981:2194:2198:2199:2200:2393:2559:2562:2693:2895:3138:3139:3140:3141:3142:3352:3865:3867:3868:3870:3872:3874:4250:5007:6119:6261:6653:8660:10004:10400:11232:11658:11914:12043:12048:12198:12297:12521:12555:12895:13069:13148:13230:13311:13357:14181:14394:14721:21080:21451:21627:21772:21939:30012:30054:30070,0,RBL:210.61.82.184:@mediatek.com:.lbl8.mailshell.net-62.2.12.100 64.100.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:25,LUA_SUMMARY:none X-HE-Tag: waves96_8878c2bd6143b X-Filterd-Recvd-Size: 3656 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by imf23.hostedemail.com (Postfix) with ESMTP for ; Fri, 22 May 2020 02:02:17 +0000 (UTC) X-UUID: 7421c5cce6cf45d086d0431ffc9b90f3-20200522 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=qIWtxoGuZ5P6mO49eH/CrXHztmv7j3tYchUpE2BMWOE=; b=W4d4mS/lmhxkiGXUku7OiRPcT+PtShkiyBU8ll5t8mWZfJBWYwtCJVK436oJiJF766jBshnlD/DLQB4VKr1W82iwuR4u08y5qbrsc2596txEJ8u7PEhDvh+LwavCy5hx1Jl4ZIEIb2WSENR0+YSMdI+/xZlyqney+VETXWo6QKo=; X-UUID: 7421c5cce6cf45d086d0431ffc9b90f3-20200522 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 944133403; Fri, 22 May 2020 10:02:14 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs06n2.mediatek.inc (172.21.101.130) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 10:02:11 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 May 2020 10:02:12 +0800 From: Walter Wu To: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Jonathan Corbet CC: , , , , wsd_upstream , , Walter Wu Subject: [PATCH v6 4/4] kasan: update documentation for generic kasan Date: Fri, 22 May 2020 10:02:12 +0800 Message-ID: <20200522020212.23460-1-walter-zh.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-TM-SNTS-SMTP: 96CB23A265DA29919D6ADF75D54BB85AE65E7498DE570CC72449AA74EB4B50CD2000:8 X-MTK: N X-Bogosity: Ham, tests=bogofilter, spamicity=0.023764, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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. 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 ~~~~~~~~~~~~~~~~~~~~~~~~