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 66819C433EF for ; Mon, 6 Dec 2021 21:47:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355815AbhLFVur (ORCPT ); Mon, 6 Dec 2021 16:50:47 -0500 Received: from out2.migadu.com ([188.165.223.204]:65110 "EHLO out2.migadu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355412AbhLFVuk (ORCPT ); Mon, 6 Dec 2021 16:50:40 -0500 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=1638827230; 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=vhe5kEMNFRSnWjEMXar5wkGHtuo9NDKTQhUT0l8T7fU=; b=jRv2K2Ltk3F5wz4BzV2fccJSdYyc31RJmDOteBv/6VztOq/T+Cdioxa94cDFBW6Ax15zwl dVVKoIobsAYHqwIlB1Dmjg/h38gXHcZ0QytRMSJhPsqglzRtdH8RcYcuutAAQvS41BUqyy ndBkslAgLs45ddwWu5tiYcbgf/8lzzY= 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 , Mark Rutland , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH v2 32/34] arm64: select KASAN_VMALLOC for SW/HW_TAGS modes Date: Mon, 6 Dec 2021 22:44:09 +0100 Message-Id: <4f56dd2bfaf945032a226f90141bb4f8e73959b7.1638825394.git.andreyknvl@google.com> 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 Generic KASAN already selects KASAN_VMALLOC to allow VMAP_STACK to be selected unconditionally, see commit acc3042d62cb9 ("arm64: Kconfig: select KASAN_VMALLOC if KANSAN_GENERIC is enabled"). The same change is needed for SW_TAGS KASAN. HW_TAGS KASAN does not require enabling KASAN_VMALLOC for VMAP_STACK, they already work together as is. Still, selecting KASAN_VMALLOC still makes sense to make vmalloc() always protected. In case any bugs in KASAN's vmalloc() support are discovered, the command line kasan.vmalloc flag can be used to disable vmalloc() checking. This patch selects KASAN_VMALLOC for all KASAN modes for arm64. Signed-off-by: Andrey Konovalov --- Changes v1->v2: - Split out this patch. --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c4207cf9bb17..f0aa434e3b7a 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -205,7 +205,7 @@ config ARM64 select IOMMU_DMA if IOMMU_SUPPORT select IRQ_DOMAIN select IRQ_FORCED_THREADING - select KASAN_VMALLOC if KASAN_GENERIC + select KASAN_VMALLOC if KASAN select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH -- 2.25.1