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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9656C433EF for ; Mon, 4 Jul 2022 01:41:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232501AbiGDBlF (ORCPT ); Sun, 3 Jul 2022 21:41:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbiGDBlD (ORCPT ); Sun, 3 Jul 2022 21:41:03 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25EBF6378 for ; Sun, 3 Jul 2022 18:40:54 -0700 (PDT) X-UUID: 862a8d493bda47d2918fdc25cc8b89f1-20220704 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.7,REQID:9fc070c2-e751-4244-9a55-dc043afeaf29,OB:0,LO B:20,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,RULE:Release_Ham,A CTION:release,TS:100 X-CID-INFO: VERSION:1.1.7,REQID:9fc070c2-e751-4244-9a55-dc043afeaf29,OB:0,LOB: 20,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,RULE:Spam_GS981B3D,A CTION:quarantine,TS:100 X-CID-META: VersionHash:87442a2,CLOUDID:11fb7dd6-5d6d-4eaf-a635-828a3ee48b7c,C OID:2a2041576cbe,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 862a8d493bda47d2918fdc25cc8b89f1-20220704 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 749548446; Mon, 04 Jul 2022 09:40:50 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Mon, 4 Jul 2022 09:40:48 +0800 Received: from mszsdtcf10.gcn.mediatek.inc (10.16.4.60) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 4 Jul 2022 09:40:48 +0800 From: Haibo Li To: Sami Tolvanen CC: , Kees Cook , Nathan Chancellor , Nick Desaulniers , Matthias Brugger , Peter Zijlstra , Masami Hiramatsu , Christophe Leroy , =?UTF-8?q?Andr=C3=A9=20Almeida?= , Luis Chamberlain , Juergen Gross , Haibo Li , Tiezhu Yang , Aaron Tomlin , Dmitry Torokhov , , , , Subject: [PATCH v2 0/2] cfi: free old cfi shadow asynchronously Date: Mon, 4 Jul 2022 09:40:44 +0800 Message-ID: <20220704014046.34596-1-haibo.li@mediatek.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset changes synchronize_rcu to call_rcu in update_shadow. Patch 1 enables the CFI sanitization for cfi.c and bypass __cfi_slowpath_diag. It is the prerequisite for using call_rcu in cfi.c. Patch 2 changes synchronize_rcu to call_rcu and free old cfi shadow in rcu cb Changes in v2: - Remove _run_cfi_check,add __nocfi to __cfi_slowpath_diag directly - Rename _cfi_shadow_free_rcu to free_shadow Haibo Li (2): cfi: enable sanitize for cfi.c cfi: free old cfi shadow asynchronously kernel/Makefile | 3 --- kernel/cfi.c | 14 +++++++++++--- 2 files changed, 11 insertions(+), 6 deletions(-) -- 2.25.1