From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753519Ab0APM2Y (ORCPT ); Sat, 16 Jan 2010 07:28:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753330Ab0APM2X (ORCPT ); Sat, 16 Jan 2010 07:28:23 -0500 Received: from lider.pardus.org.tr ([193.140.100.216]:41293 "EHLO lider.pardus.org.tr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752129Ab0APM2W (ORCPT ); Sat, 16 Jan 2010 07:28:22 -0500 Message-ID: <4B51B0E8.1010302@pardus.org.tr> Date: Sat, 16 Jan 2010 14:28:24 +0200 From: =?UTF-8?B?T3phbiDDh2HEn2xheWFu?= User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: Yinghai Lu CC: "linux-kernel@vger.kernel.org" , hpa@zytor.com, mingo@elte.hu, a.p.zijlstra@chello.nl, jaswinder@kernel.org, stable@kernel.org, "Rafael J. Wysocki" Subject: Re: Boot hangs after "Freeing initrd memory" with 2.6.31.11 References: <4B4E1633.8010700@pardus.org.tr> <4B4EC0A1.3090503@pardus.org.tr> <4B4ECB1C.6070000@kernel.org> <4B4EF35D.3040203@pardus.org.tr> <4B4F1764.2040406@pardus.org.tr> <4B4F1DE7.307@pardus.org.tr> In-Reply-To: <4B4F1DE7.307@pardus.org.tr> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ozan Çağlayan wrote: > Ozan Çağlayan wrote On 14-01-2010 15:08: > > (CC'ing stable) > >>> From 5095f59bda6793a7b8f0856096d6893fe98e0e51 Mon Sep 17 00:00:00 2001 >>> From: Jaswinder Singh Rajput >>> Date: Fri, 5 Jun 2009 23:27:17 +0530 >>> Subject: [PATCH] x86: cpu_debug: Remove model information to reduce encoding-decoding >> Reverting this commit on top of 2.6.31.11 fixes the boot hangs with AMD Athlon XP processors. >> I'll double check with other reporters in a day or two. > > OK we've verified on 2 separate systems with Athlon XP that reverting the commit fixes the issue. > Here's proc/cpuinfo and relevant dmesg output for reference: > > processor : 0 > vendor_id : AuthenticAMD > cpu family : 6 > model : 10 > model name : AMD Athlon(tm) XP 2600+ > stepping : 0 > cpu MHz : 1920.500 > cache size : 512 KB > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up > bogomips : 3842.29 > clflush size : 32 > power management: ts > > > > [ 0.461404] Freeing initrd memory: 5191k freed > [ 0.467844] initcall populate_rootfs+0x0/0x62 returned 0 after 217975 usecs > [ 0.467947] calling i8259A_init_sysfs+0x0/0x1d @ 1 > [ 0.468093] initcall i8259A_init_sysfs+0x0/0x1d returned 0 after 41 usecs > [ 0.468190] calling sbf_init+0x0/0xda @ 1 > [ 0.468282] initcall sbf_init+0x0/0xda returned 0 after 0 usecs > [ 0.468378] calling i8237A_init_sysfs+0x0/0x1d @ 1 > [ 0.468484] initcall i8237A_init_sysfs+0x0/0x1d returned 0 after 12 usecs > [ 0.468582] calling add_rtc_cmos+0x0/0x94 @ 1 > [ 0.468679] initcall add_rtc_cmos+0x0/0x94 returned 0 after 4 usecs > [ 0.468780] calling cache_sysfs_init+0x0/0x55 @ 1 > [ 0.468940] initcall cache_sysfs_init+0x0/0x55 returned 0 after 64 usecs > [ 0.469041] calling cpu_debug_init+0x0/0x1f @ 1 > [ 0.469190] cpu0(1) debug files 5 > [ 0.469282] initcall cpu_debug_init+0x0/0x1f returned 0 after 143 usecs <-- That call wasn't returning at all > > I think that the commit should be reverted or a fix should be released for linux-2.6 tree, > as well as .31 and .32 stable trees. Linux 2.6.31 is released on Sep 9th. So people having an Athlon XP processor + a kernel newer than 4 months which enables CONFIG_X86_CPU_DEBUG can't even boot into a linux kernel. I was *at least* expecting a comment from the relevant people but nope for 2 days. It seems to be a serious regression which doesn't get caught. I'm also CC'ing Rafael, maybe he can inject this in one of his regression threads. Thanks Ozan Caglayan