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=-6.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 C1661C4338F for ; Wed, 4 Aug 2021 18:34:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A343561002 for ; Wed, 4 Aug 2021 18:34:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240309AbhHDSek (ORCPT ); Wed, 4 Aug 2021 14:34:40 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:40969 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240289AbhHDSej (ORCPT ); Wed, 4 Aug 2021 14:34:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1628102065; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=hlb+xRZV+z9q4u5VqbS/pgDyaJDNtQ939RsvQHMzgbU=; b=VtbidKvVOxjgMZAFSUZjIdNMZtEDk39JN/G0yOA5fMBTC430MRKABprLGeKHRbw+Omv4vL PfRR88ZfXgtBvrVsNDrJCV1V3pQS1jVM8VhEG2hVQ8fr+rBvihvuyJFc/AfwUK7bNCA1Qp vA/ytcxjYt4t/K7YohsSY1NSPU9m9ic= Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-450-Hme70hdnMPG0-ChmzJrBpw-1; Wed, 04 Aug 2021 14:34:22 -0400 X-MC-Unique: Hme70hdnMPG0-ChmzJrBpw-1 Received: by mail-qk1-f197.google.com with SMTP id i15-20020a05620a150fb02903b960837cbfso2582836qkk.10 for ; Wed, 04 Aug 2021 11:34:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=hlb+xRZV+z9q4u5VqbS/pgDyaJDNtQ939RsvQHMzgbU=; b=aDNWEbPbKkRJIZaVri7sHomRDXkBZsYfx1UMoKLnOskdPs5PZzbEoPf/XUxMi0/kl2 eNNRo2X9sxDLKswxJjojPujIHfEkkj6/OOz2QhM/mnskygvstLjdedaG0mb/UI2A/5Iv fRk93n0wMNCe/vim0mO/jAhpPIHvHubxdNv86lHmxkk68oaScwXvd3GztcdWEBCmdhsy mRaiu+3q61Ddwp2PyjpTB5bxl+hIQOhYDi7RC1A8fzai8CfAxLxmOjezRNkYS05OKtMt QqIu8OBBPQmGqviHENZXyU8wyx2Qj4Rcsx6nkWx3HsGRJ4ElX4ofv5eNlqiidivwwWAH 3s4w== X-Gm-Message-State: AOAM533Qw1AHbNxGzRBU+c+mf/FULfRiSQFc6yPdEBIcrwp1/ePr6JXV ORZ2PKtLfm5lT+1tML0mggJ8WL0Dv8gNbqpic+e7I9O37GO/aUIyFQzBejJNGvba1cV3KZanjJW yZlGXURrUbTazyZWpl0wInLIK X-Received: by 2002:a05:620a:1913:: with SMTP id bj19mr753126qkb.341.1628102062033; Wed, 04 Aug 2021 11:34:22 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy+PwbFy5Egs9sds3sq3/LK8jhuOPC4aazyRm72gTOAQ0jaeZaTEJk9zhhLIOTsTiygYfAhrg== X-Received: by 2002:a05:620a:1913:: with SMTP id bj19mr753102qkb.341.1628102061816; Wed, 04 Aug 2021 11:34:21 -0700 (PDT) Received: from treble ([68.74.140.199]) by smtp.gmail.com with ESMTPSA id g13sm1237020qtj.2.2021.08.04.11.34.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Aug 2021 11:34:21 -0700 (PDT) Date: Wed, 4 Aug 2021 11:34:19 -0700 From: Josh Poimboeuf To: Randy Dunlap Cc: LKML , Peter Zijlstra Subject: Re: linux-next: objtool hang/loop? Message-ID: <20210804183419.k7p3tvqerwgzxpuz@treble> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 28, 2021 at 07:25:21PM -0700, Randy Dunlap wrote: > Hi Josh & Peter, > > Yesterday (2021-07-27), one of my x86_64 randconfig build ran for > over 2 hours (it's a slow core i5 laptop and spinning rust media). > I killed it and reran the .config file today on linux-next-20210728. > I killed this one after 30 minutes on its last message: > OBJTOOL vmlinux.o > > This is a .config with # CONFIG_MODULES is not set. > vmlinux.o is 253 MB in size. > I see that using verbose make (V=1) won't help me any here. > > The problematic (if it is a problem: maybe I didn't wait long > enough?) .config file is attached. The gzipped vmlinux.o file is at: > http://www.infradead.org/~rdunlap/vmlinux.o.gz > > If there is a problem, I can test any patches... Hi Randy, I'm guessing your laptop doesn't have a lot of RAM. I ran /usr/bin/time -v tools/objtool/objtool check --noinstr --vmlinux --no-fp --uaccess vmlinux.o It showed a max RSS of 6.5GB. Can you try this patch from Peter? It halves the memory usage. https://lkml.kernel.org/r/20210507164925.GC54801@worktop.programming.kicks-ass.net -- Josh