From patchwork Mon Dec 6 21:44:09 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: 12695017 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1F2B2C433F5 for ; Mon, 6 Dec 2021 22:08:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GE6kxmdXrCebR53TP64e4YknBhuFxULuFG06P/TCZik=; b=CAztIYDSlJjyFm lIfhlBOGidFr2yiFojnZDo2iicvSusL4QmgAnIf+NtizW0abIAiovvcXatTkiVbTv//CfJ4QEn4Qr anmZFFrR9aS91K+ksjlgjzFOzceoR/GujtH+HGoX3b6D0uN0rWaVIsyQkRmB7KwLKmSWRBv07oJ5G rY3/TjPKn1kli15JH48XTRtQaHbbx1WcdfV/aAtE/wMgCuisp9AD7Oqw30lXSlXz5kuLb0452ePCJ jg4JUknN3AVQ3OUNeLI42RLCJ4E0LyCJ2uesUJMwdzvOUdCoW7wqnHxvoqkAdJCiioH5/4bXlGiLB 2uPvmfmRsuy1S6pl8B9Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muM8c-00686C-1w; Mon, 06 Dec 2021 22:07:10 +0000 Received: from out2.migadu.com ([188.165.223.204]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1muLpI-005zmk-2S for linux-arm-kernel@lists.infradead.org; Mon, 06 Dec 2021 21:47:13 +0000 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 X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211206_134712_310180_EA0FD9F6 X-CRM114-Status: GOOD ( 11.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 Acked-by: Catalin Marinas --- 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