From owner-freebsd-dtrace@freebsd.org Sat Dec 17 06:13:29 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 38624C84D36 for ; Sat, 17 Dec 2016 06:13:29 +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 B705C1CCE for ; Sat, 17 Dec 2016 06:13:28 +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 uBH6D2hp045697 (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"); Sat, 17 Dec 2016 15:13:24 +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 uBH6BlxZ060178 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 17 Dec 2016 15:11:47 +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 uBH6BiSc060171; Sat, 17 Dec 2016 15:11:46 +0900 (JST) (envelope-from hrs@FreeBSD.org) Date: Sat, 17 Dec 2016 15:07:59 +0900 (JST) Message-Id: <20161217.150759.295686080150201223.hrs@allbsd.org> To: gnn@neville-neil.com Cc: rm@joyent.com, freebsd-dtrace@freebsd.org Subject: Re: malformed symbol From: Hiroki Sato In-Reply-To: <0921189E-481D-4F8D-BAEA-6B656EE5ECFB@neville-neil.com> References: <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a@joyent.com> <20161215.145424.2283983185637049413.hrs@allbsd.org> <0921189E-481D-4F8D-BAEA-6B656EE5ECFB@neville-neil.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(Sat_Dec_17_15_07_59_2016_309)--" 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]); Sat, 17 Dec 2016 15:13:26 +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: Sat, 17 Dec 2016 06:13:29 -0000 ----Security_Multipart(Sat_Dec_17_15_07_59_2016_309)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit "George Neville-Neil" wrote in <0921189E-481D-4F8D-BAEA-6B656EE5ECFB@neville-neil.com>: gn> gn> gn> On 15 Dec 2016, at 0:54, Hiroki Sato wrote: gn> gn> > Robert Mustacchi wrote gn> > in <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a@joyent.com>: gn> > gn> > rm> On 12/14/16 14:51 , Hiroki Sato wrote: gn> > rm> > This was reproducible on 11.x and 12.x, not on 10.x. Could anyone gn> > rm> > try this and let me know if this is reproducible on your 11.x or 12.x gn> > rm> > box? I guess this is a regression of symbol rewrite routine such as gn> > rm> > s/__/-/ in the dtrace utility while I have not investigated the gn> > rm> > details yet. Or am I missing something here? gn> > rm> gn> > rm> We've seen something similar on illumos that corresponds with newer gn> > rm> binutils versions (2.26). See https://www.illumos.org/issues/6653. gn> > gn> > Thank you for the info. Certainly passing -no-integrated-as flag to gn> > clang to make it use an old gas avoids this issue. Simply doing gn> > objcopy sample.o before "dtrace -G" is another workaround. gn> > gn> gn> Can you open a PR for this one, so we can track it? Sure. I will. -- Hiroki ----Security_Multipart(Sat_Dec_17_15_07_59_2016_309)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlhU1j8ACgkQTyzT2CeTzy2DXwCgwi+vVYke3eLx4+kuKi09jZzD MlYAn398kCtRgAuh+VqCNaMxhDAUm0y5 =c6D2 -----END PGP SIGNATURE----- ----Security_Multipart(Sat_Dec_17_15_07_59_2016_309)----