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=-9.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 B6D1DC55179 for ; Wed, 21 Oct 2020 16:26:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F73722283 for ; Wed, 21 Oct 2020 16:26:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603297612; bh=rNAAM/r90IkCSUbtaY5FPZ1EPfnFPNizgiW6QhfRiXw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=gPMWRLlUzJoCTkV9/4848ixxVxkeolcAWFg610u16ZQ0JQPneyT5Y2PS1XY3p5TvD WkO9qVDBzWfScQsAKD7AqQjbw0WzsqfoVx5D3kPmoWl85Y+6DWxY/H2HFZ0SQhW6/l LuVBHRaSpFcfeyrunDjkor/2ezprPth/Vep988Gs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2444620AbgJUQ0v (ORCPT ); Wed, 21 Oct 2020 12:26:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:59722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730587AbgJUQ0u (ORCPT ); Wed, 21 Oct 2020 12:26:50 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.37.151]) (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 B4AF321D7B; Wed, 21 Oct 2020 16:26:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603297609; bh=rNAAM/r90IkCSUbtaY5FPZ1EPfnFPNizgiW6QhfRiXw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=O+mZiMdtaNYPJC+m2IJKqLx9SoD8hgdvduSg2fd5+fATBlmn4rrg/QSTFkgvzjwNx lBKVXXqq7asgi4nm7VfMhPirOgBQkRVSqY4Fg6MqEWamsrREgI5saII5HuxwXlDfpN y01SCVbNanahv0HZyWhLs3j65kqtO2R9GvVE9c/0= Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id ADEA7403C2; Wed, 21 Oct 2020 13:26:47 -0300 (-03) Date: Wed, 21 Oct 2020 13:26:47 -0300 From: Arnaldo Carvalho de Melo To: Andrii Nakryiko Cc: Jiri Slaby , =?iso-8859-1?Q?=C9rico?= Rolim , dwarves@vger.kernel.org, open list , Arnaldo Carvalho de Melo , Hao Luo , Andrii Nakryiko Subject: Re: Segfault in pahole 1.18 when building kernel 5.9.1 for arm64 Message-ID: <20201021162647.GQ2342001@kernel.org> References: <82b757bb-1f49-ab02-2f4b-89577d56fec9@kernel.org> <20201020122015.GH2294271@kernel.org> <20201021112900.GN2342001@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Oct 21, 2020 at 08:53:16AM -0700, Andrii Nakryiko escreveu: > On Wed, Oct 21, 2020 at 6:48 AM Arnaldo Carvalho de Melo > wrote: > > > > Em Wed, Oct 21, 2020 at 08:22:40AM +0200, Jiri Slaby escreveu: > > > On 20. 10. 20, 14:20, Arnaldo Carvalho de Melo wrote: > > > > > Yeah, I observe the very same. I reported it at: > > > > > https://bugzilla.suse.com/show_bug.cgi?id=1177921 > > > > > > Would it be possible to try with > > > > https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?h=tmp.libbtf_encoder > > > > ? > > > > > Yes, that branch fixes the crashes and the kernel build finishes. The > > > zero-sized symbol error remains. > > > > > So what should distributions do now -- should we switch to a pahole snapshot > > > for a while? > > > > That would do the trick, I just completed my testing and pushed to the > > master branch on kernel.org and github, tests detailed at: > > > > https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=040fd7f585c9b9fcf4475d294b3f5ddf78405297 > > > > There are some minor bug reports I want to address but my ETA right now > > is the end of this week to release v1.19. > > I've just sent a patch that skips zero-sized ELF symbols without a > warning or error. Got it, applied, Jiri, please consider testing it and providing a Tested-by, in addition to the Reported-by that I'm adding now. Thanks! - Arnaldo