From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 18 Nov 2000 13:52:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 18 Nov 2000 13:52:43 -0500 Received: from web3401.mail.yahoo.com ([204.71.203.55]:37129 "HELO web3407.mail.yahoo.com") by vger.kernel.org with SMTP id ; Sat, 18 Nov 2000 13:52:36 -0500 Message-ID: <20001118182230.14470.qmail@web3407.mail.yahoo.com> Date: Sat, 18 Nov 2000 19:22:30 +0100 (CET) From: Markus Schoder Subject: Re: Freeze on FPU exception with Athlon To: Linus Torvalds , Brian Gerst Cc: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --- Linus Torvalds wrote: > > If I'm right, the proper test-program should be > something like > Your test program is indeed sufficient to trigger the freeze. Unfortunately the patch does not make a difference :( My test program caused the exception (and the freeze) unintendedly in the return statement since the division was optimized away as Brian pointed out. Some more data points: SysRq is definitely not working after the freeze :( Judging from the processor temperature after rebooting the processor is very busy. I know of another guy with the exact same CPU (Athlon Thunderbird 900MHz) and mainboard (ABIT KT7-RAID) who has the same problem. I use gcc 2.95.2 to compile the kernel. I couldn't so far find out where the problem was introduced since the older 2.4.0-test kernels do not support the HPT370. I will recable the drive to the primary controller and try again. I will also try to compile a non AMD specific kernel and see if that makes a difference. If just this 40GB drive would fsck faster :) Note that cpuinfo shows model 4 whereas e.g. Brian had model 2 if that means anything. /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) Processor stepping : 2 cpu MHz : 900.000063 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes features : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow bogomips : 1795.69 -- Markus __________________________________________________________________ Do You Yahoo!? Gesendet von Yahoo! Mail - http://mail.yahoo.de Gratis zum Millionär! - http://10millionenspiel.yahoo.de - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/