From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759489Ab0I0OXX (ORCPT ); Mon, 27 Sep 2010 10:23:23 -0400 Received: from uucp.gnuu.de ([83.246.114.63]:4348 "EHLO uucp.gnuu.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759477Ab0I0OXV (ORCPT ); Mon, 27 Sep 2010 10:23:21 -0400 X-Greylist: delayed 1667 seconds by postgrey-1.27 at vger.kernel.org; Mon, 27 Sep 2010 10:23:21 EDT Date: Mon, 27 Sep 2010 14:50:37 +0200 From: =?iso-8859-1?Q?J=F6rg?= Sommer To: Steven Rostedt Cc: Frederic Weisbecker , Ingo Molnar , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: Re: Oops in trace_hardirqs_on (powerpc) Message-ID: <20100927125037.GA4497@alea.gnuu.de> References: <20100806233157.GA7117@alea.gnuu.de> <1285184671.26872.127.camel@gandalf.stny.rr.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="MGYHOYXEY6WxJCY8" Content-Disposition: inline In-Reply-To: <1285184671.26872.127.camel@gandalf.stny.rr.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --MGYHOYXEY6WxJCY8 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello Steven, Steven Rostedt hat am Wed 22. Sep, 15:44 (-0400) geschrieben: > Sorry for the late reply, but I was on vacation when you sent this, and > I missed it while going through email. >=20 > Do you still have this issue? No. I've rebuild my kernel without TRACE_IRQFLAGS and the problem vanished, as expected. The problem is, that in some cases the stack is only two frames deep, which causes the macro CALLER_ADDR1 makes an invalid access. Someone told me, there a workaround for the problem on i386, too. % sed -n 2p arch/x86/lib/thunk_32.S * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash) Bye, J=F6rg. --=20 Angenehme Worte sind nie wahr, wahre Worte sind nie angenehm. --MGYHOYXEY6WxJCY8 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature http://en.wikipedia.org/wiki/OpenPGP Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkygkx0ACgkQwe0mZwH1VICMRACfS1qucjIyFj+p8CB55kopPB3Q oHwAoJmA2XysgTSHqoBhVchfOs7Fdm8J =zPt1 -----END PGP SIGNATURE----- --MGYHOYXEY6WxJCY8--