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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 98868C433E6 for ; Sun, 3 Jan 2021 17:13:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 653CF20936 for ; Sun, 3 Jan 2021 17:13:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727732AbhACRNV (ORCPT ); Sun, 3 Jan 2021 12:13:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727676AbhACRNU (ORCPT ); Sun, 3 Jan 2021 12:13:20 -0500 Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2AC75C0613C1 for ; Sun, 3 Jan 2021 09:12:32 -0800 (PST) Received: by mail-pg1-x52d.google.com with SMTP id n25so17260321pgb.0 for ; Sun, 03 Jan 2021 09:12:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=j9nC8spDRsbKIqITtcFVK5qfNVqGd72bWGhC3L39q82R8010SlWb58g4xtF50sisUa CfMxfvTnGgeJKwMLbxYvaE5kCZi0IvGeR3BidI8+fAl8OE1m9ex3PjGA7l5UqpCdsT8S CClk/1SFkcl8k97Jxq7SWRUVMGeCADSH2ApMpuinr1XvsQiYSvwvzasCmOh+FDJUp0Om TodXjnTwaBrW6MTUzvvXn9BG1fUoJ7hC0QKUOPOOXCdJtwB3gmstUWRzTpxCBS6Pdftp tj0cJiWF3qGNKeBorCQmV3YLO1jiIhCt7sTf6RH4bjvwmI5zU4UBNxMvwPLlw0T5wOYt PsUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=o4AA8E1uHkNYKZj18e6gAxtyoFbvpKQB5ZwoS5t7Pkw3z94q4yR1lGFwDcgj6k/9uU AcldvE8n3RjU1MoYt7XQBSFd1oZhIobJRwSWEM6OC2mtM44yEg0HmdhCF9Y97n+tFZEC +bdogh6kB8I3a8+l/ReSs/hq6e04YYPpzlk/PeOGE3+KvUWSAt6022cVLTImRQ+T5wt6 iMxVkCbt1K2wdmBqVaIKgFQppuHOlrp6AUf0P0m+89muy+EhlT6W3jgko5F4pU4WJKG9 3ZRbTq1qc0BK4gxX2nO+5Z/wLZkYdZPVmXhinkN4wP+iViNdAg0ZIhU2s8kPrBInwypk E8yQ== X-Gm-Message-State: AOAM533IqjmeOBOnIrU0xC5Lt5o+OgKkJbjKECoDD1uUhbP6EfnEY/WE iNdY44/WGko7STh6rVztTi/C+vkOZrA= X-Google-Smtp-Source: ABdhPJwVkKI1/s0n073MJPATBjaxsZ36JasEetjbvlDaf7VaG92vb5iUjgmHPzD5NvQlqz5H++LpZA== X-Received: by 2002:aa7:9619:0:b029:1ae:33b2:780f with SMTP id q25-20020aa796190000b02901ae33b2780fmr7380595pfg.26.1609693951614; Sun, 03 Jan 2021 09:12:31 -0800 (PST) Received: from localhost.localdomain (61-230-37-4.dynamic-ip.hinet.net. [61.230.37.4]) by smtp.gmail.com with ESMTPSA id y3sm19771657pjb.18.2021.01.03.09.12.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Jan 2021 09:12:31 -0800 (PST) From: Lecopzer Chen To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org Cc: dan.j.williams@intel.com, aryabinin@virtuozzo.com, glider@google.com, dvyukov@google.com, akpm@linux-foundation.org, linux-mediatek@lists.infradead.org, yj.chiang@mediatek.com, will@kernel.org, catalin.marinas@arm.com, Lecopzer Chen , Lecopzer Chen Subject: [PATCH 0/3] arm64: kasan: support CONFIG_KASAN_VMALLOC Date: Mon, 4 Jan 2021 01:11:34 +0800 Message-Id: <20210103171137.153834-1-lecopzer@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linux supports KAsan for VMALLOC since commit 3c5c3cfb9ef4da9 ("kasan: support backing vmalloc space with real shadow memory") Acroding to how x86 ported it [1], they early allocated p4d and pgd, but in arm64 I just simulate how KAsan supports MODULES_VADDR in arm64 by not to populate the vmalloc area except for kimg address. Test environment: 4G and 8G Qemu virt, 39-bit VA + 4k PAGE_SIZE with 3-level page table, test by lib/test_kasan.ko and lib/test_kasan_module.ko It also works in Kaslr with CONFIG_RANDOMIZE_MODULE_REGION_FULL, but not test for HW_TAG(I have no proper device), thus keep HW_TAG and KASAN_VMALLOC mutual exclusion until confirming the functionality. [1]: commit 0609ae011deb41c ("x86/kasan: support KASAN_VMALLOC") Signed-off-by: Lecopzer Chen Lecopzer Chen (3): arm64: kasan: don't populate vmalloc area for CONFIG_KASAN_VMALLOC arm64: kasan: abstract _text and _end to KERNEL_START/END arm64: Kconfig: support CONFIG_KASAN_VMALLOC arch/arm64/Kconfig | 1 + arch/arm64/mm/kasan_init.c | 29 +++++++++++++++++++++-------- 2 files changed, 22 insertions(+), 8 deletions(-) -- 2.25.1 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=-13.8 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 CB28AC433E0 for ; Sun, 3 Jan 2021 17:12:48 +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 85CE2206F4 for ; Sun, 3 Jan 2021 17:12:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 85CE2206F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com 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: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=04ULTlT0+tC1mlmSHRWf8kBo5hFMa5sJfyQYpk3ElCo=; b=UQJ81jV5WEc70z4D2QvlCFgSa6 xJ0le+a6qz8CQGdxFJfZuE1xT/LqDW+8ZTaepHMyQXTl/hp3vSXMoq17/hvGlZRYs3TEpnxr8Rv8w AaK7fzBDlafI05UCiJLMdpThRg0emDWDRY+vU9e7se9w9Er4TsStn11ATHjMeZSuEG9IHeGRZXgaR VuHO+fREUwlStpXjoAEWMrWYMKQXafHiOFEckDhydOXPMRWA2ZMwNwmZ+q21z4CkV5c0Lmsc3PoAA zKc3PRv+aCdilM1FqCPxEtpTSJP00V9fuGO4QNSb09Mim7td4mZqADi9wRzyIZHvy/DtM/gSb4Xs1 EfoP7lJQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kw6vm-0003NN-1w; Sun, 03 Jan 2021 17:12:38 +0000 Received: from mail-pf1-x436.google.com ([2607:f8b0:4864:20::436]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kw6vh-0003LF-Tb; Sun, 03 Jan 2021 17:12:34 +0000 Received: by mail-pf1-x436.google.com with SMTP id c12so14893830pfo.10; Sun, 03 Jan 2021 09:12:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=j9nC8spDRsbKIqITtcFVK5qfNVqGd72bWGhC3L39q82R8010SlWb58g4xtF50sisUa CfMxfvTnGgeJKwMLbxYvaE5kCZi0IvGeR3BidI8+fAl8OE1m9ex3PjGA7l5UqpCdsT8S CClk/1SFkcl8k97Jxq7SWRUVMGeCADSH2ApMpuinr1XvsQiYSvwvzasCmOh+FDJUp0Om TodXjnTwaBrW6MTUzvvXn9BG1fUoJ7hC0QKUOPOOXCdJtwB3gmstUWRzTpxCBS6Pdftp tj0cJiWF3qGNKeBorCQmV3YLO1jiIhCt7sTf6RH4bjvwmI5zU4UBNxMvwPLlw0T5wOYt PsUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=b7TfYN4Q60PSf94fd6d1fUUKM3e9JRSuDovDndoMaMFKQDtkCiyTio/O1YiV/IoLS8 2Lq6Bc7ik8NyuFAD4Ba8cqVg3+ifjudtvNGYNa7uMh5gx9SYJEaf6hA3kGVy2Zj2dfa+ A4wQSc2n2nnOoagUPEqhA8H4us7WPKKqjiRKMJoeoVT7ZVsWAcASsrIicA/IeRN/a1vI J/E5dTVcBL/cMGuhLyW7jV2kmSh56XsQDFeQhXBwvyh5QkMtl2MRREUh/ac3NyM/QMq0 nopmo5iNtK+wU4GUFpzA/T1COehPEjvcMXW0Fv9JIM/9tHMDNKDbZIt1+zB+HutPKQR1 O1Qw== X-Gm-Message-State: AOAM533XYzI4zDKwlTR3IKNWbsyuesD/ZnZRYJerIn9oTb24+C4nYUnT oqujWCyeAKHoFJ5c9lDF+n4= X-Google-Smtp-Source: ABdhPJwVkKI1/s0n073MJPATBjaxsZ36JasEetjbvlDaf7VaG92vb5iUjgmHPzD5NvQlqz5H++LpZA== X-Received: by 2002:aa7:9619:0:b029:1ae:33b2:780f with SMTP id q25-20020aa796190000b02901ae33b2780fmr7380595pfg.26.1609693951614; Sun, 03 Jan 2021 09:12:31 -0800 (PST) Received: from localhost.localdomain (61-230-37-4.dynamic-ip.hinet.net. [61.230.37.4]) by smtp.gmail.com with ESMTPSA id y3sm19771657pjb.18.2021.01.03.09.12.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Jan 2021 09:12:31 -0800 (PST) From: Lecopzer Chen To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/3] arm64: kasan: support CONFIG_KASAN_VMALLOC Date: Mon, 4 Jan 2021 01:11:34 +0800 Message-Id: <20210103171137.153834-1-lecopzer@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210103_121234_036971_10CE2FF8 X-CRM114-Status: UNSURE ( 7.92 ) X-CRM114-Notice: Please train this message. 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: Lecopzer Chen , glider@google.com, yj.chiang@mediatek.com, Lecopzer Chen , linux-mediatek@lists.infradead.org, catalin.marinas@arm.com, aryabinin@virtuozzo.com, dan.j.williams@intel.com, will@kernel.org, akpm@linux-foundation.org, dvyukov@google.com 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 Linux supports KAsan for VMALLOC since commit 3c5c3cfb9ef4da9 ("kasan: support backing vmalloc space with real shadow memory") Acroding to how x86 ported it [1], they early allocated p4d and pgd, but in arm64 I just simulate how KAsan supports MODULES_VADDR in arm64 by not to populate the vmalloc area except for kimg address. Test environment: 4G and 8G Qemu virt, 39-bit VA + 4k PAGE_SIZE with 3-level page table, test by lib/test_kasan.ko and lib/test_kasan_module.ko It also works in Kaslr with CONFIG_RANDOMIZE_MODULE_REGION_FULL, but not test for HW_TAG(I have no proper device), thus keep HW_TAG and KASAN_VMALLOC mutual exclusion until confirming the functionality. [1]: commit 0609ae011deb41c ("x86/kasan: support KASAN_VMALLOC") Signed-off-by: Lecopzer Chen Lecopzer Chen (3): arm64: kasan: don't populate vmalloc area for CONFIG_KASAN_VMALLOC arm64: kasan: abstract _text and _end to KERNEL_START/END arm64: Kconfig: support CONFIG_KASAN_VMALLOC arch/arm64/Kconfig | 1 + arch/arm64/mm/kasan_init.c | 29 +++++++++++++++++++++-------- 2 files changed, 22 insertions(+), 8 deletions(-) -- 2.25.1 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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=-13.8 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 A2F12C433DB for ; Sun, 3 Jan 2021 17:14:29 +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 638D4206F4 for ; Sun, 3 Jan 2021 17:14:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 638D4206F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.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=wElez4+uwHWZcIyi+KS8cXUeZTZbOPeOIN2CJuGXNOY=; b=KM/Qyu6SbeyKUatYzmd7byceZB aKfPdN45I+FcbxXks5izuwKriuoczDjJFA7I4x535fJLRu8jxWBRRx8v/QwmSVD/r+kPq6EfD9JXw qHfsLd97KWvRoRWwuHOVdQwAFcAKhAn5s4O4GxAsddOdtBTuSXrIwHp3+EsOwWNb/i+hM+uzGH+yo PjNTtBmSK9MWhaOmUJmcUUvA+CK+kKL2SYcgzykDR2sii5mjnFdJn413WEjMn3eP6lOcz+Q9Hzluz fEOEU3yopOiC6Rcm/UlZP7/XHjx8NQ3oIbXemxDUU9kqZDs1EaiWcUFkb1iFZQc0DAcuDMHuNIC+o 48pt2cBw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kw6vk-0003Ma-Pu; Sun, 03 Jan 2021 17:12:36 +0000 Received: from mail-pf1-x436.google.com ([2607:f8b0:4864:20::436]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kw6vh-0003LF-Tb; Sun, 03 Jan 2021 17:12:34 +0000 Received: by mail-pf1-x436.google.com with SMTP id c12so14893830pfo.10; Sun, 03 Jan 2021 09:12:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=j9nC8spDRsbKIqITtcFVK5qfNVqGd72bWGhC3L39q82R8010SlWb58g4xtF50sisUa CfMxfvTnGgeJKwMLbxYvaE5kCZi0IvGeR3BidI8+fAl8OE1m9ex3PjGA7l5UqpCdsT8S CClk/1SFkcl8k97Jxq7SWRUVMGeCADSH2ApMpuinr1XvsQiYSvwvzasCmOh+FDJUp0Om TodXjnTwaBrW6MTUzvvXn9BG1fUoJ7hC0QKUOPOOXCdJtwB3gmstUWRzTpxCBS6Pdftp tj0cJiWF3qGNKeBorCQmV3YLO1jiIhCt7sTf6RH4bjvwmI5zU4UBNxMvwPLlw0T5wOYt PsUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=P/GeiIxcJ64ZQ6SmObKp07RN0gB/xHVcCELrAtFy6J8=; b=b7TfYN4Q60PSf94fd6d1fUUKM3e9JRSuDovDndoMaMFKQDtkCiyTio/O1YiV/IoLS8 2Lq6Bc7ik8NyuFAD4Ba8cqVg3+ifjudtvNGYNa7uMh5gx9SYJEaf6hA3kGVy2Zj2dfa+ A4wQSc2n2nnOoagUPEqhA8H4us7WPKKqjiRKMJoeoVT7ZVsWAcASsrIicA/IeRN/a1vI J/E5dTVcBL/cMGuhLyW7jV2kmSh56XsQDFeQhXBwvyh5QkMtl2MRREUh/ac3NyM/QMq0 nopmo5iNtK+wU4GUFpzA/T1COehPEjvcMXW0Fv9JIM/9tHMDNKDbZIt1+zB+HutPKQR1 O1Qw== X-Gm-Message-State: AOAM533XYzI4zDKwlTR3IKNWbsyuesD/ZnZRYJerIn9oTb24+C4nYUnT oqujWCyeAKHoFJ5c9lDF+n4= X-Google-Smtp-Source: ABdhPJwVkKI1/s0n073MJPATBjaxsZ36JasEetjbvlDaf7VaG92vb5iUjgmHPzD5NvQlqz5H++LpZA== X-Received: by 2002:aa7:9619:0:b029:1ae:33b2:780f with SMTP id q25-20020aa796190000b02901ae33b2780fmr7380595pfg.26.1609693951614; Sun, 03 Jan 2021 09:12:31 -0800 (PST) Received: from localhost.localdomain (61-230-37-4.dynamic-ip.hinet.net. [61.230.37.4]) by smtp.gmail.com with ESMTPSA id y3sm19771657pjb.18.2021.01.03.09.12.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Jan 2021 09:12:31 -0800 (PST) From: Lecopzer Chen To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/3] arm64: kasan: support CONFIG_KASAN_VMALLOC Date: Mon, 4 Jan 2021 01:11:34 +0800 Message-Id: <20210103171137.153834-1-lecopzer@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210103_121234_036971_10CE2FF8 X-CRM114-Status: UNSURE ( 7.92 ) 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: Lecopzer Chen , glider@google.com, yj.chiang@mediatek.com, Lecopzer Chen , linux-mediatek@lists.infradead.org, catalin.marinas@arm.com, aryabinin@virtuozzo.com, dan.j.williams@intel.com, will@kernel.org, akpm@linux-foundation.org, dvyukov@google.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Linux supports KAsan for VMALLOC since commit 3c5c3cfb9ef4da9 ("kasan: support backing vmalloc space with real shadow memory") Acroding to how x86 ported it [1], they early allocated p4d and pgd, but in arm64 I just simulate how KAsan supports MODULES_VADDR in arm64 by not to populate the vmalloc area except for kimg address. Test environment: 4G and 8G Qemu virt, 39-bit VA + 4k PAGE_SIZE with 3-level page table, test by lib/test_kasan.ko and lib/test_kasan_module.ko It also works in Kaslr with CONFIG_RANDOMIZE_MODULE_REGION_FULL, but not test for HW_TAG(I have no proper device), thus keep HW_TAG and KASAN_VMALLOC mutual exclusion until confirming the functionality. [1]: commit 0609ae011deb41c ("x86/kasan: support KASAN_VMALLOC") Signed-off-by: Lecopzer Chen Lecopzer Chen (3): arm64: kasan: don't populate vmalloc area for CONFIG_KASAN_VMALLOC arm64: kasan: abstract _text and _end to KERNEL_START/END arm64: Kconfig: support CONFIG_KASAN_VMALLOC arch/arm64/Kconfig | 1 + arch/arm64/mm/kasan_init.c | 29 +++++++++++++++++++++-------- 2 files changed, 22 insertions(+), 8 deletions(-) -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel