From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757967Ab0JLRmR (ORCPT ); Tue, 12 Oct 2010 13:42:17 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:42202 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757306Ab0JLRmQ (ORCPT ); Tue, 12 Oct 2010 13:42:16 -0400 Date: Tue, 12 Oct 2010 10:42:38 -0700 (PDT) Message-Id: <20101012.104238.104051243.davem@davemloft.net> To: mikpe@it.uu.se Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [2.6.36-rc regression] occasional complete system hangs on sparc64 SMP From: David Miller In-Reply-To: <19624.63312.156073.410319@pilspetsen.it.uu.se> References: <19611.34846.813757.309183@pilspetsen.it.uu.se> <19624.63312.156073.410319@pilspetsen.it.uu.se> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mikael Pettersson Date: Sun, 3 Oct 2010 23:36:16 +0200 > I've been testing older kernels and can now say that 2.6.35-git5 > and newer kernels are definitely affected, but 2.6.35-git4 seems > solid. I'll dig deeper into the .35-git4->git5 changes towards > the end of next week. > > I never got any data out of sysrq-y or any other sysrq when a hang > occurs; usually they'd just print the name of the command but no data, > sometimes they'd oops and crash the kernel even harder. So I haven't been ignoring this report, but I cannot reproduce it on the SB2500 I have access to right now. I've been doing gcc builds and testsuite runs in a loop for several days. Occaisionally I get a dying 'as' which I have seen before and plan to investigate, but no hard hangs and no crashes. I'll keep prodding, but if you can narrow it down further please let us know.