From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66027C433DB for ; Sat, 6 Mar 2021 12:03:30 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ED61765012 for ; Sat, 6 Mar 2021 12:03:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED61765012 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=A8LbkapUwv6UMgYpIg8Lc0MQVKVPVWKc4SB04KwP1/k=; b=qUA5nD4uiQrRoXq+tXrAiR3TD uKwaCx0Z1IiALngJP/8djRk9/zZ5FHcsmamRQqx5IZa2xU/f8t2j27KYJUmnTAFapHU9kKOHgafZ7 VKYwNyg2jymlhfDXvhvMjuXbC5kIzEv4VZ5P67vekcyvJHFrFKIw0Cy/d++PDjf4fq65ruPK3tR0+ oav00FjZEapZtLB41Yb2HzRXX80tXK3TIdCuAZGuIafUutqYJtcFVKJ9u87OBJbx0WT8iJNamuH2K mbCYI2ITmneQQpsSwUe+nzNhYtO+UMe5yGty0e12v8ActhqXi4Q253LTREGvKoVfvRmAZDAT6U8s9 FBfVjUS1Q==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lIVcl-002yrF-L6; Sat, 06 Mar 2021 12:01:35 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lIVcg-002ypj-AQ for linux-arm-kernel@lists.infradead.org; Sat, 06 Mar 2021 12:01:32 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 489906501B; Sat, 6 Mar 2021 12:01:26 +0000 (UTC) Date: Sat, 6 Mar 2021 12:01:23 +0000 From: Catalin Marinas To: Andrey Konovalov Cc: Linux ARM , Vincenzo Frascino , kasan-dev , Will Deacon Subject: Re: arm64 KASAN_HW_TAGS panic on non-MTE hardware on 5.12-rc1 Message-ID: <20210306120121.GA2932@arm.com> References: <20210305171108.GD23855@arm.com> <20210305175124.GG23855@arm.com> <20210305175243.GH23855@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210306_120130_704722_0F1942EC X-CRM114-Status: GOOD ( 13.71 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 05, 2021 at 07:36:22PM +0100, Andrey Konovalov wrote: > On Fri, Mar 5, 2021 at 6:52 PM Catalin Marinas wrote: > > > > This is weird. kasan_unpoison_task_stack() is only defined when > > > > CONFIG_KASAN_STACK is enabled, which shouldn't be enablable for > > > > HW_TAGS. > > > > > > CONFIG_KASAN=y > > > # CONFIG_KASAN_GENERIC is not set > > > CONFIG_KASAN_HW_TAGS=y > > > CONFIG_KASAN_STACK=1 > > > > From Kconfig: > > > > config KASAN_STACK > > int > > default 1 if KASAN_STACK_ENABLE || CC_IS_GCC > > default 0 > > > > and I use gcc. > > Ah, that explains it. > > Could you try applying this patch and see if it fixes the issue? > > https://patchwork.kernel.org/project/linux-mm/patch/20210226012531.29231-1-walter-zh.wu@mediatek.com/ Walter's patches already in -next fix this issue. Thanks. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel