From owner-freebsd-dtrace@freebsd.org Thu Dec 15 05:56:20 2016 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0E279C800CC for ; Thu, 15 Dec 2016 05:56:20 +0000 (UTC) (envelope-from hrs@FreeBSD.org) Received: from mail.allbsd.org (gatekeeper.allbsd.org [IPv6:2001:2f0:104:e001::32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.allbsd.org", Issuer "RapidSSL SHA256 CA - G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8DD7019EF for ; Thu, 15 Dec 2016 05:56:18 +0000 (UTC) (envelope-from hrs@FreeBSD.org) Received: from mail-d.allbsd.org (p2027-ipbf1605funabasi.chiba.ocn.ne.jp [123.225.191.27]) (authenticated bits=56) by mail.allbsd.org (8.15.2/8.15.2) with ESMTPSA id uBF5tqx6096144 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) (Client CN "/OU=GT07882699/OU=See+20www.rapidssl.com/resources/cps+20+28c+2915/OU=Domain+20Control+20Validated+20-+20RapidSSL+28R+29/CN=*.allbsd.org", Issuer "/C=US/O=GeoTrust+20Inc./CN=RapidSSL+20SHA256+20CA+20-+20G3"); Thu, 15 Dec 2016 14:56:13 +0900 (JST) (envelope-from hrs@FreeBSD.org) Received: from alph.allbsd.org (alph.allbsd.org [192.168.0.10]) by mail-d.allbsd.org (8.15.2/8.15.2) with ESMTPS id uBF5sZt9036175 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 15 Dec 2016 14:54:35 +0900 (JST) (envelope-from hrs@FreeBSD.org) Received: from localhost (localhost [IPv6:::1]) (authenticated bits=0) by alph.allbsd.org (8.15.2/8.15.2) with ESMTPA id uBF5sZCP036172; Thu, 15 Dec 2016 14:54:35 +0900 (JST) (envelope-from hrs@FreeBSD.org) Date: Thu, 15 Dec 2016 14:54:24 +0900 (JST) Message-Id: <20161215.145424.2283983185637049413.hrs@allbsd.org> To: rm@joyent.com Cc: freebsd-dtrace@freebsd.org Subject: Re: malformed symbol From: Hiroki Sato In-Reply-To: <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a@joyent.com> References: <20161215.075124.1459885758696268380.hrs@allbsd.org> <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a@joyent.com> X-PGPkey-fingerprint: BDB3 443F A5DD B3D0 A530 FFD7 4F2C D3D8 2793 CF2D X-Mailer: Mew version 6.7 on Emacs 25.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Multipart/Signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="--Security_Multipart(Thu_Dec_15_14_54_24_2016_334)--" Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.99 at gatekeeper.allbsd.org X-Virus-Status: Clean X-Greylist: Sender DNS name whitelisted, not delayed by milter-greylist-4.4.3 (mail.allbsd.org [133.31.130.32]); Thu, 15 Dec 2016 14:56:14 +0900 (JST) X-Spam-Status: No, score=-99.9 required=13.0 tests=CONTENT_TYPE_PRESENT, QENCPTR1,USER_IN_WHITELIST autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on gatekeeper.allbsd.org X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Dec 2016 05:56:20 -0000 ----Security_Multipart(Thu_Dec_15_14_54_24_2016_334)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Robert Mustacchi wrote in <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a@joyent.com>: rm> On 12/14/16 14:51 , Hiroki Sato wrote: rm> > This was reproducible on 11.x and 12.x, not on 10.x. Could anyone rm> > try this and let me know if this is reproducible on your 11.x or 12.x rm> > box? I guess this is a regression of symbol rewrite routine such as rm> > s/__/-/ in the dtrace utility while I have not investigated the rm> > details yet. Or am I missing something here? rm> rm> We've seen something similar on illumos that corresponds with newer rm> binutils versions (2.26). See https://www.illumos.org/issues/6653. Thank you for the info. Certainly passing -no-integrated-as flag to clang to make it use an old gas avoids this issue. Simply doing objcopy sample.o before "dtrace -G" is another workaround. -- Hiroki ----Security_Multipart(Thu_Dec_15_14_54_24_2016_334)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlhSMBAACgkQTyzT2CeTzy1nigCgy8pQrp41RhIx4PfouUN1H5yV vAcAnin5e6sgQE8k33gqAYpVWzDgS4/x =h6MM -----END PGP SIGNATURE----- ----Security_Multipart(Thu_Dec_15_14_54_24_2016_334)----