From patchwork Mon Jan 24 18:05:11 2022 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: 12722700 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 D471BC433EF for ; Mon, 24 Jan 2022 18:08:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6968F6B00AB; Mon, 24 Jan 2022 13:08:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 644D46B00B7; Mon, 24 Jan 2022 13:08:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 50C176B00B9; Mon, 24 Jan 2022 13:08:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0056.hostedemail.com [216.40.44.56]) by kanga.kvack.org (Postfix) with ESMTP id 3D9E86B00AB for ; Mon, 24 Jan 2022 13:08:44 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 07831903AA for ; Mon, 24 Jan 2022 18:08:44 +0000 (UTC) X-FDA: 79065966168.06.F404A8F Received: from out2.migadu.com (out2.migadu.com [188.165.223.204]) by imf14.hostedemail.com (Postfix) with ESMTP id 0E25110003C for ; Mon, 24 Jan 2022 18:08:32 +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=1643047712; 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=iNP88pCjnQrqi/xZg5Z3uUoNwPfihld579YonDiORFw=; b=wHE5nEfzV2Z4xHp+jp9YDlFb+5mvOKHRL3s+CepOxi4361G8mH6Zg8F1rA6ng6ENClWmTX sZlXt3qLm56Ela4HkNq00u8WUX0A791i536LJHFKZLgHpwUpGLlA57w2DthCQy1mtOpLlR r3rYg/lJEPcruLOZ2po2yt0Ifpb2woE= 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 v6 37/39] arm64: select KASAN_VMALLOC for SW/HW_TAGS modes Date: Mon, 24 Jan 2022 19:05:11 +0100 Message-Id: <99d6b3ebf57fc1930ff71f9a4a71eea19881b270.1643047180.git.andreyknvl@google.com> In-Reply-To: References: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev X-Rspam-User: nil X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0E25110003C X-Stat-Signature: d9c7fnrbg3d43yk7m7w3a9xihifp8krz Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=wHE5nEfz; spf=pass (imf14.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-HE-Tag: 1643047712-915562 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 6978140edfa4..beefec5c7b90 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