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=-0.8 required=3.0 tests=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 58AE2C433F5 for ; Tue, 4 Sep 2018 08:06:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0689E2086A for ; Tue, 4 Sep 2018 08:06:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0689E2086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tomt.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726234AbeIDMae (ORCPT ); Tue, 4 Sep 2018 08:30:34 -0400 Received: from mail1.ugh.no ([178.79.162.34]:55436 "EHLO mail1.ugh.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726061AbeIDMad (ORCPT ); Tue, 4 Sep 2018 08:30:33 -0400 Received: from localhost (localhost [127.0.0.1]) by mail1.ugh.no (Postfix) with ESMTP id 817602493DB; Tue, 4 Sep 2018 10:06:33 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at catastrophix.ugh.no Received: from mail1.ugh.no ([127.0.0.1]) by localhost (catastrophix.ugh.no [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UJp582a7rY4Q; Tue, 4 Sep 2018 10:06:33 +0200 (CEST) Received: from [10.255.99.10] (unknown [185.176.245.143]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: andre@tomt.net) by mail.ugh.no (Postfix) with ESMTPSA id B45F42493DA; Tue, 4 Sep 2018 10:06:32 +0200 (CEST) Subject: Re: [PATCH 4.18 050/123] mm/tlb, x86/mm: Support invalidating TLB caches for RCU_TABLE_FREE From: Andre Tomt To: Greg Kroah-Hartman , Naresh Kamboju Cc: open list , linux- stable , Jann Horn , "Peter Zijlstra (Intel)" , Rik van Riel , Nicholas Piggin , David Miller , Will Deacon , Martin Schwidefsky , Michael Ellerman , stable@kernel.org, Linus Torvalds References: <20180903165719.499675257@linuxfoundation.org> <20180903165721.576888426@linuxfoundation.org> <20180904052428.GA26045@kroah.com> <75d7b2f6-e057-5c76-0da0-2e76b54d10a5@tomt.net> Message-ID: <4059f8e5-391c-5898-a6ce-8aa6ed887731@tomt.net> Date: Tue, 4 Sep 2018 10:06:32 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <75d7b2f6-e057-5c76-0da0-2e76b54d10a5@tomt.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04. sep. 2018 08:10, Andre Tomt wrote: > On 04. sep. 2018 07:24, Greg Kroah-Hartman wrote: >>> Full test log link, >>> https://lkft.validation.linaro.org/scheduler/job/404027#L4051 >> >> Does Linus's tree also crash with this patch applied?  Being "bug >> compatible" is good :) >> >> thanks, >> >> greg k-h >> > > I suspect it is because we're missing upstream commit > db7ddef301128dad394f1c0f77027f86ee9a4edb > mm: move tlb_table_flush to tlb_flush_mmu_free > > Have not tested. Tested it now. Adding this commit to my local 4.18.6-rc1 based tree fixes the crashing on my systems. On 4.18.6-rc1 they would fall over within seconds of getting to the login prompt.