From patchwork Thu Dec 30 19:17:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: andrey.konovalov@linux.dev X-Patchwork-Id: 12701633 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 251E7C4332F for ; Thu, 30 Dec 2021 19:17:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 149A16B00BF; Thu, 30 Dec 2021 14:17:19 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0F92F6B00C0; Thu, 30 Dec 2021 14:17:19 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F29EB6B00C2; Thu, 30 Dec 2021 14:17:18 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0020.hostedemail.com [216.40.44.20]) by kanga.kvack.org (Postfix) with ESMTP id C9B6C6B00C0 for ; Thu, 30 Dec 2021 14:17:18 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 93BD28249980 for ; Thu, 30 Dec 2021 19:17:18 +0000 (UTC) X-FDA: 78975418956.02.EDCB8D5 Received: from out2.migadu.com (out2.migadu.com [188.165.223.204]) by imf03.hostedemail.com (Postfix) with ESMTP id 395A720003 for ; Thu, 30 Dec 2021 19:17:18 +0000 (UTC) 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=1640891837; 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=3futlslnRS1bChcRGJd1vN713hfm9wuyQmsIKS3rviE=; b=HptYvJTcKuKpOokFrYY96OEyW7GieQL2dYPVFb+evZ2rM5xnOcoZtauO9JM4p7kVcl+fEf USH+uNBcVKFE0DAT3B7f33ZgglGIhjOpSe20tGrFJzrzHfhb4uUMQmMdmKOQYWecNaBVgH yd756QresIoVIrsiETzW9eArq+bhrWY= From: andrey.konovalov@linux.dev To: Andrew Morton Cc: Andrey Konovalov , Marco Elver , Alexander Potapenko , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, linux-mm@kvack.org, Vincenzo Frascino , Catalin Marinas , Will Deacon , Mark Rutland , linux-arm-kernel@lists.infradead.org, Peter Collingbourne , Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH mm v5 37/39] arm64: select KASAN_VMALLOC for SW/HW_TAGS modes Date: Thu, 30 Dec 2021 20:17:12 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev X-Rspamd-Queue-Id: 395A720003 X-Stat-Signature: 9tfn5kdnqwuczyhomtmgstueqgtuqnjo Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=HptYvJTc; spf=pass (imf03.hostedemail.com: domain of andrey.konovalov@linux.dev designates 188.165.223.204 as permitted sender) smtp.mailfrom=andrey.konovalov@linux.dev; dmarc=pass (policy=none) header.from=linux.dev X-Rspamd-Server: rspam10 X-HE-Tag: 1640891838-240915 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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. Select KASAN_VMALLOC for all KASAN modes for arm64. Signed-off-by: Andrey Konovalov Acked-by: Catalin Marinas --- Changes v2->v3: - Update patch description. 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 3bb0b67292b5..8798c918f425 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