From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754609AbaE1PU3 (ORCPT ); Wed, 28 May 2014 11:20:29 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:52313 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932194AbaE1PUY (ORCPT ); Wed, 28 May 2014 11:20:24 -0400 Date: Wed, 28 May 2014 17:20:11 +0200 From: Peter Zijlstra To: Cyrill Gorcunov Cc: Pavel Machek , Vince Weaver , linux-kernel@vger.kernel.org, Ingo Molnar Subject: Re: perf_fuzzer crash on pentium 4 Message-ID: <20140528152011.GX11096@twins.programming.kicks-ass.net> References: <20140528135617.GA25750@amd.pavel.ucw.cz> <20140528140632.GH2570@moon> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="fjRHIBfqI5bf54wl" Content-Disposition: inline In-Reply-To: <20140528140632.GH2570@moon> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --fjRHIBfqI5bf54wl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 28, 2014 at 06:06:32PM +0400, Cyrill Gorcunov wrote: > On Wed, May 28, 2014 at 03:56:17PM +0200, Pavel Machek wrote: > > Hi! > >=20 > > > So just to be difficult I fired up the perf_fuzzer on a Pentium 4 mac= hine. > > >=20 > > > It crashes more or less instantly (sorry for the line wrapping,=20 > > > just got the serial console hooked up and don't have minicom configur= ed=20 > > > right yet). > > >=20 > > > this is 3.15-rc4 with the anti-memory corruption patch applied. > > >=20 > > > [ 67.872274] BUG: unable to handle kernel NULL pointer dereference = at 00000004 > > > [ 67.876146] IP: [] p4_pmu_schedule_events+0xa5/0= x331 > >=20 > > Pentium 4 's were not 64bit, were they? >=20 > Not all, but there were 64bit varians (Xeons iirc). http://en.wikipedia.org/wiki/Pentium_d consumer netburst chip with x86_64. --fjRHIBfqI5bf54wl Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJThf6rAAoJEHZH4aRLwOS6wKAP/0GrQlaTgkXshTS3698dYlNF tiSjB6f85eHRh75jhwxO1MqW7O5x9sMPIlcYSJMFblOo5T23APgRdHmpP9/G8eg2 ZE+RBC6jC5kp6hhF0N9gE/0RZKLQ3+y7YW/Bynp/haRHww1KTu/0xRWP+75pVX64 Z6ublwI7U9CB39Oupe5HB6GGsofG5r+1jaGuvz4AcY+NNVCJeYFpkIKWjfEu7HKn y7TbHymS2sNc1+vPPQz/NkbGbhXQqz8NGNGUi/6be5Xh9wttSm0B7Ls5sTK1kdRW uIPgyvfRSqCO+QPM3gjogLKG6a+rx55GUlblODt4V14qdi4hbZuruADvxb7fSGkn kDS25onwoK5KvVZh7OC10vwfN7DezpGhc4JajhkxiQc927kT7/ULPst/XOvtdciC vAwzct4zugf269aPPi2NoQ/rIDcHCAgx1qN5ZZJo57msse+I3M2obeUkOfxM9hbl bhv5yds0IUDcMjVCfh5kK+/KAM7YoNXaGY78VpESygISjmdSwsgIPJ5NJKDaZS+j hVeO6om/ZmOg4wnl94AlGTXzsNV6npNm77VQzUW1Tkgxk9jHNQWHX4doRQD3zcrL awxRhlqH1GMKxmUpnM/aowIWZp3b0k1E6SZrcg0plwxM4wmNKgMLaHUpPVNUiFVx s4ksJrYUq5CB4FbMOTFo =BlZe -----END PGP SIGNATURE----- --fjRHIBfqI5bf54wl--