From owner-svn-src-stable-12@freebsd.org Mon Feb 18 14:03:19 2019 Return-Path: Delivered-To: svn-src-stable-12@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E9D6614DCCE7; Mon, 18 Feb 2019 14:03:18 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 27921680A4; Mon, 18 Feb 2019 14:03:18 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id x1IE36wU009737 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 18 Feb 2019 16:03:09 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua x1IE36wU009737 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id x1IE36Ma009736; Mon, 18 Feb 2019 16:03:06 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Mon, 18 Feb 2019 16:03:05 +0200 From: Konstantin Belousov To: "Herbert J. Skuhra" Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: Re: svn commit: r344157 - stable/12/lib/libc/x86/sys Message-ID: <20190218140305.GH2420@kib.kiev.ua> References: <201902151133.x1FBXmHU060955@repo.freebsd.org> <87d0nqazuq.wl-herbert@gojira.at> <20190217211916.GD2420@kib.kiev.ua> <87bm3aawcn.wl-herbert@gojira.at> <20190218075814.GE2420@kib.kiev.ua> <20190218113745.skk5eoofarzsjbq6@mail.bsd4all.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190218113745.skk5eoofarzsjbq6@mail.bsd4all.net> User-Agent: Mutt/1.11.2 (2019-01-07) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on tom.home X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2019 14:03:19 -0000 On Mon, Feb 18, 2019 at 12:37:45PM +0100, Herbert J. Skuhra wrote: > On Mon, Feb 18, 2019 at 09:58:14AM +0200, Konstantin Belousov wrote: > > On Sun, Feb 17, 2019 at 11:22:48PM +0100, Herbert J. Skuhra wrote: > > > On Sun, 17 Feb 2019 22:19:16 +0100, Konstantin Belousov wrote: > > > > > > > > On Sun, Feb 17, 2019 at 10:07:09PM +0100, Herbert J. Skuhra wrote: > > > > > On Fri, 15 Feb 2019 12:33:48 +0100, Konstantin Belousov wrote: > > > > > > > > > > > > Author: kib > > > > > > Date: Fri Feb 15 11:33:48 2019 > > > > > > New Revision: 344157 > > > > > > URL: https://svnweb.freebsd.org/changeset/base/344157 > > > > > > > > > > > > Log: > > > > > > MFC r343855, r343859: > > > > > > Use ifunc to select the barrier instruction for RDTSC. > > > > > > > > > > > > Modified: > > > > > > stable/12/lib/libc/x86/sys/__vdso_gettc.c > > > > > > Directory Properties: > > > > > > stable/12/ (props changed) > > > > > > > > > > After upgrading my Soekris Net 6501-70 (amd64) to this revision the > > > > > system is unusable. Basically all programs produce a "Segmentation > > > > > fault (core dumped)": > > > > > > > > > > pid 856 (ls), jid 0, uid 1001: exited on signal 11 (core dumped) > > > > > pid 857 (ls), jid 0, uid 1001: exited on signal 11 (core dumped) > > > > > pid 858 (bsdtar), jid 0, uid 0: exited on signal 11 (core dumped) > > > > > pid 859 (sh), jid 0, uid 0: exited on signal 11 (core dumped) > > > > > pid 876 (dmesg), jid 0, uid 1001: exited on signal 11 (core dumped) > > > > > pid 877 (su), jid 0, uid 0: exited on signal 11 > > > > > pid 880 (more), jid 0, uid 1001: exited on signal 11 (core dumped) > > > > > pid 885 (sudo), jid 0, uid 0: exited on signal 11 > > > > > > > > What do you have in your make.conf and src.conf ? > > > > > > I am building on a faster machine with a Intel(R) Xeon(R) CPU. > > > > > > /etc/src.conf: > > > > > > WITHOUT_DEBUG_FILES= > > > WITHOUT_KERNEL_SYMBOLS= > > > WITHOUT_PROFILE= > > > WITH_KERNEL_RETPOLINE= > > > > > WITH_RETPOLINE= > > ^^^^^^ > > Remove this setting and rebuild the world. > > Is it still broken ? > > No, without the line "WITH_RETPOLINE=" the system is OK. Which version of clang do you get ? It was recently bumped from 6.0.1 to 7.0.1, and there was a ifunc use in libc in quite fundamental place already.