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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 521E4C43381 for ; Mon, 18 Feb 2019 17:23:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 11B55217D9 for ; Mon, 18 Feb 2019 17:23:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iYHwja4k" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11B55217D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject: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=KahBxW2kSMzJ5W0xtRaQxLiX83/7rSfnku+8fR8m7fI=; b=iYHwja4kaqyFHt rnrcCnwjl8vIvIaSEfyV/c31kD0yWqO1arNVQm8TUl4YNBrLGoHd7bnYy1jw4RlZ8klold+03ExsQ DzlZ8JOnzqRndsducJx7PvQWUvccA7bvbLosMj7vG4EwwQJwK3URUs6mb+K/XQQxTVOEyz+U/AITn PqfEb2wepqjUPgVN/D42Dr3uCylrsq6IkIXpbuZVBMXsojalvQu3hF57tnVmN5df11ZumBTpNOWO3 HJKni7/IPeI4Msbi28tCdrL7U+7v8oU3uWJUkGnSUYdl00m0P38kFGQYzvOOoL8cTthQYxoBqDnJ9 priFYjy3Wb9/+tdXl6aQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gvmdd-0006ti-22; Mon, 18 Feb 2019 17:23:29 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gvmdZ-0006iy-Ba for linux-arm-kernel@lists.infradead.org; Mon, 18 Feb 2019 17:23:26 +0000 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 845C3217D9; Mon, 18 Feb 2019 17:23:23 +0000 (UTC) Date: Mon, 18 Feb 2019 12:23:22 -0500 From: Steven Rostedt To: Andrey Konovalov Subject: Re: [PATCH] trace: skip hwasan Message-ID: <20190218122322.5219d3cb@gandalf.local.home> In-Reply-To: References: <20190217043434.46233-1-cai@lca.pw> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190218_092325_410155_97F21357 X-CRM114-Status: GOOD ( 13.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Will Deacon , LKML , kasan-dev , Ingo Molnar , Qian Cai , Andrey Ryabinin , Linux ARM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 18 Feb 2019 16:56:44 +0100 Andrey Konovalov wrote: > On Mon, Feb 18, 2019 at 4:53 PM Qian Cai wrote: > > > > > > > > On 2/18/19 10:25 AM, Andrey Konovalov wrote: > > > On Sun, Feb 17, 2019 at 5:34 AM Qian Cai wrote: > > >> > > >> Enabling function tracer with CONFIG_KASAN_SW_TAGS=y (hwasan) tracer > > >> causes the whole system frozen on ThunderX2 systems with 256 CPUs, > > >> because there is a burst of too much pointer access, and then KASAN will > > >> dereference each byte of the shadow address for the tag checking which > > >> will kill all the CPUs. > > > > > > Hi Qian, > > > > > > Could you check if adding "CFLAGS_REMOVE_tags.o = -pg" into > > > mm/kasan/Makefile helps with that? > > > > Yes, you nailed it! > > Great! I'll send the patch. OK, then I'll ignore the original patch in this thread. -- Steve _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel