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 592CEC433F5 for ; Tue, 30 Nov 2021 22:09:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344714AbhK3WMt (ORCPT ); Tue, 30 Nov 2021 17:12:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344547AbhK3WLO (ORCPT ); Tue, 30 Nov 2021 17:11:14 -0500 Received: from out1.migadu.com (out1.migadu.com [IPv6:2001:41d0:2:863f::]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C741C06174A for ; Tue, 30 Nov 2021 14:07:54 -0800 (PST) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1638310073; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IXyg2OmXCwGvEgzJdDkzZ/hs5ydqycKFWdffFjeLykY=; b=s1AnY5h27kusC+7KxsIVZ6wRvZU3UewzI9HszyP42L8ajoEt/veaVlWMXgEs9OwN0kW8jA eddnoKtIlfK6druyh1YnaRXiMjuWWSjPRWUpSGdPe4bXtZjd/tiJetCMwqyVqIp8UycolK so8S9kcbXcrrS+sWSrwV2o9TQ3yakco= From: andrey.konovalov@linux.dev To: Marco Elver , Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne Cc: Andrey Konovalov , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH 23/31] kasan, arm64: allow KASAN_VMALLOC with SW_TAGS Date: Tue, 30 Nov 2021 23:07:51 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrey Konovalov vmalloc support for SW_TAGS KASAN is now complete. Allow enabling CONFIG_KASAN_VMALLOC. Signed-off-by: Andrey Konovalov --- arch/arm64/Kconfig | 1 + lib/Kconfig.kasan | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c4207cf9bb17..c05d7a06276f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -206,6 +206,7 @@ config ARM64 select IRQ_DOMAIN select IRQ_FORCED_THREADING select KASAN_VMALLOC if KASAN_GENERIC + select KASAN_VMALLOC if KASAN_SW_TAGS select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index cdc842d090db..3f144a87f8a3 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -179,7 +179,7 @@ config KASAN_TAGS_IDENTIFY config KASAN_VMALLOC bool "Back mappings in vmalloc space with real shadow memory" - depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC + depends on (KASAN_GENERIC || KASAN_SW_TAGS) && HAVE_ARCH_KASAN_VMALLOC help By default, the shadow region for vmalloc space is the read-only zero page. This means that KASAN cannot detect errors involving -- 2.25.1