From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932551Ab0JVSAG (ORCPT ); Fri, 22 Oct 2010 14:00:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46902 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932486Ab0JVSAC (ORCPT ); Fri, 22 Oct 2010 14:00:02 -0400 Date: Fri, 22 Oct 2010 13:58:45 -0400 From: Jason Baron To: Ingo Molnar Cc: Steven Rostedt , LKML , Andrew Morton , Frederic Weisbecker , Thomas Gleixner , "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , masami.hiramatsu.pt@hitachi.com Subject: Re: [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c Message-ID: <20101022175845.GF6498@redhat.com> References: <1287508282.16971.386.camel@gandalf.stny.rr.com> <20101019184111.GA17266@elte.hu> <20101020154045.GA18353@elte.hu> <20101020164324.GC7348@redhat.com> <20101020183329.GA12666@elte.hu> <20101021110925.GA27219@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101021110925.GA27219@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 21, 2010 at 01:09:25PM +0200, Ingo Molnar wrote: > * Ingo Molnar wrote: > > > > > * Jason Baron wrote: > > > > > [...] Do we always fail after "Testing all events:" is printed? [...] > > > > Yes, in all cases i checked. Sometimes it's an oops. > > Such as this one: > > [ 6.724449] Testing event kmalloc_node: OK > [ 6.744459] Testing event kmem_cache_alloc_node: > [ 6.749111] BUG: unable to handle kernel paging request at ffffffff > [ 6.752000] IP: [] 0xf6425f7c > [ 6.752000] *pde = 01384067 *pte = 00000000 > [ 6.752000] Oops: 0002 [#1] PREEMPT SMP > [ 6.752000] last sysfs file: > [ 6.752000] Modules linked in: > [ 6.752000] > [ 6.752000] Pid: 2, comm: kthreadd Not tainted 2.6.36-rc8-tip+ #50831 / > [ 6.752000] EIP: 0060:[] EFLAGS: 00010282 CPU: 0 > [ 6.752000] EIP is at 0xf6425f7c > [ 6.752000] EAX: ffffffff EBX: c1021c4f ECX: 00000001 EDX: 00000000 > [ 6.752000] ESI: f6425f7c EDI: fffffff4 EBP: f640c000 ESP: f6425ee4 > [ 6.752000] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 6.752000] Process kthreadd (pid: 2, ti=f6424000 task=f640c000 task.ti=f6424000) > [ 6.752000] Stack: > [ 6.752000] c1021c4f f640c02c 00800711 00000000 00000000 00000000 f6425f7c f6809880 > [ 6.752000] <0> f6425f7c 00000000 00000000 f6425f7c c1022a54 00000000 00000000 00000000 > [ 6.752000] <0> 00000000 00800711 00000000 00000000 00000000 c101d94a f6809880 c131f3a0 > [ 6.752000] Call Trace: > [ 6.752000] [] ? copy_process+0xa1/0xd6d > [ 6.752000] [] ? do_fork+0x139/0x2ca > [ 6.752000] [] ? dequeue_task+0xb9/0xc8 > [ 6.752000] [] ? schedule+0x821/0x84b > [ 6.752000] [] ? kthread+0x0/0x68 > [ 6.752000] [] ? kernel_thread+0x77/0x7f > [ 6.752000] [] ? kthread+0x0/0x68 > [ 6.752000] [] ? kernel_thread_helper+0x0/0x10 > [ 6.752000] [] ? kthreadd+0x91/0xc7 > [ 6.752000] [] ? kthreadd+0x0/0xc7 > [ 6.752000] [] ? kernel_thread_helper+0x6/0x10 > [ 6.752000] Code: 98 80 f6 00 c0 40 f6 a9 37 61 f9 11 07 80 00 79 80 03 c1 c0 5f 42 f6 7c 5f 42 f6 30 79 00 c1 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 79 80 03 c1 70 3f 42 f6 00 > [ 6.752000] EIP: [] 0xf6425f7c SS:ESP 0068:f6425ee4 > [ 6.752000] CR2: 00000000ffffffff > [ 6.752000] ---[ end trace 6000cf675d3eddec ]--- > > (captured two days ago) > > Full bootlog is attached below. > > Thanks, > > Ingo > Hi, this looks potentially like a separate issue from the 'hang' one - I'm wondering if this was re-produced with the same .config as the 'hang' case? I haven't been able to hit this one yet.... thanks, -Jason