From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754899Ab2CGKcq (ORCPT ); Wed, 7 Mar 2012 05:32:46 -0500 Received: from mail.skyhub.de ([78.46.96.112]:50774 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751415Ab2CGKco (ORCPT ); Wed, 7 Mar 2012 05:32:44 -0500 Date: Wed, 7 Mar 2012 11:32:27 +0100 From: Borislav Petkov To: Linus Torvalds Cc: Linux Kernel Mailing List , "Paul E. McKenney" Subject: Re: Linux 3.3-rc6 Message-ID: <20120307103227.GA5237@x1.osrc.amd.com> Mail-Followup-To: Borislav Petkov , Linus Torvalds , Linux Kernel Mailing List , "Paul E. McKenney" References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 03, 2012 at 06:57:31PM -0800, Linus Torvalds wrote: > Hmm. Nothing much to say about this -rc: it really is all small fixes > and cleanups. > > In fact, it's been calm enough that this *might* be the last -rc, but > we'll see how the upcoming week goes. If it stays calm (and hopefully > even calms down some more), there doesn't seem to be any major reason > to drag out the release cycle any more. > > But hey, that does imply that people who have seen regressions should > re-check them and holler loudly if they are still seeing problems. Just a couple of warnings, just saw them when booted 3.3.0-rc6-00104-gf3969bf78f14 yesterday on this box. I'm ccing Paul for the first two, there's a fix already for the last one, I'm sending it to Ingo. Thanks. ... [ 0.027998] Performance Events: AMD PMU driver. [ 0.027998] ... version: 0 [ 0.027998] ... bit width: 48 [ 0.027998] ... generic registers: 4 [ 0.027998] ... value mask: 0000ffffffffffff [ 0.027998] ... max period: 00007fffffffffff [ 0.027998] ... fixed-purpose events: 0 [ 0.028000] ... event mask: 000000000000000f [ 0.028240] System has AMD C1E enabled [ 0.028257] ------------[ cut here ]------------ [ 0.028263] WARNING: at include/linux/rcupdate.h:242 __atomic_notifier_call_chain+0x4d/0xe9() [ 0.028265] Hardware name: System Product Name [ 0.028266] Modules linked in: [ 0.028269] Pid: 0, comm: swapper/0 Not tainted 3.3.0-rc6-00104-gf3969bf78f14 #1 [ 0.028270] Call Trace: [ 0.028274] [] warn_slowpath_common+0x83/0x9b [ 0.028277] [] warn_slowpath_null+0x1a/0x1c [ 0.028280] [] __atomic_notifier_call_chain+0x4d/0xe9 [ 0.028282] [] atomic_notifier_call_chain+0x14/0x16 [ 0.028285] [] notify_write+0x29/0x2b [ 0.028288] [] vt_console_print+0x243/0x2fe [ 0.028291] [] __call_console_drivers+0x77/0x89 [ 0.028294] [] _call_console_drivers+0x5c/0x60 [ 0.028296] [] console_unlock+0x118/0x212 [ 0.028298] [] vprintk+0x3be/0x403 [ 0.028302] [] ? rcu_idle_enter_common.isra.31+0x336/0x37b [ 0.028305] [] printk+0x41/0x43 [ 0.028307] [] ? rcu_idle_enter+0x45/0x53 [ 0.028309] [] ? rcu_idle_enter+0x45/0x53 [ 0.028312] [] amd_e400_idle+0x6c/0xe7 [ 0.028315] [] cpu_idle+0x6c/0xc8 [ 0.028318] [] rest_init+0x124/0x12b [ 0.028319] [] ? rest_init+0x6a/0x12b [ 0.028323] [] start_kernel+0x2d5/0x2e2 [ 0.028325] [] x86_64_start_reservations+0x7e/0x82 [ 0.028327] [] x86_64_start_kernel+0xf0/0xf7 [ 0.028333] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 0.028334] ------------[ cut here ]------------ [ 0.028336] WARNING: at include/linux/rcupdate.h:248 __atomic_notifier_call_chain+0xb4/0xe9() [ 0.028337] Hardware name: System Product Name [ 0.028338] Modules linked in: [ 0.028341] Pid: 0, comm: swapper/0 Tainted: G W 3.3.0-rc6-00104-gf3969bf78f14 #1 [ 0.028342] Call Trace: [ 0.028344] [] warn_slowpath_common+0x83/0x9b [ 0.028347] [] warn_slowpath_null+0x1a/0x1c [ 0.028349] [] __atomic_notifier_call_chain+0xb4/0xe9 [ 0.028352] [] ? __atomic_notifier_call_chain+0x54/0xe9 [ 0.028354] [] atomic_notifier_call_chain+0x14/0x16 [ 0.028356] [] notify_write+0x29/0x2b [ 0.028359] [] vt_console_print+0x243/0x2fe [ 0.028361] [] __call_console_drivers+0x77/0x89 [ 0.028364] [] _call_console_drivers+0x5c/0x60 [ 0.028367] [] console_unlock+0x118/0x212 [ 0.028369] [] vprintk+0x3be/0x403 [ 0.028371] [] ? rcu_idle_enter_common.isra.31+0x336/0x37b [ 0.028374] [] printk+0x41/0x43 [ 0.028376] [] ? rcu_idle_enter+0x45/0x53 [ 0.028378] [] ? rcu_idle_enter+0x45/0x53 [ 0.028380] [] amd_e400_idle+0x6c/0xe7 [ 0.028382] [] cpu_idle+0x6c/0xc8 [ 0.028384] [] rest_init+0x124/0x12b [ 0.028386] [] ? rest_init+0x6a/0x12b [ 0.028388] [] start_kernel+0x2d5/0x2e2 [ 0.028391] [] x86_64_start_reservations+0x7e/0x82 [ 0.028393] [] x86_64_start_kernel+0xf0/0xf7 [ 0.028394] ---[ end trace 4eaa2a86a8e2da23 ]--- [ 0.028998] Switch to broadcast mode on CPU0 [ 0.035099] MCE: In-kernel MCE decoding enabled. [ 0.036006] [ 0.036144] =============================== [ 0.036283] [ INFO: suspicious RCU usage. ] [ 0.036425] 3.3.0-rc6-00104-gf3969bf78f14 #1 Tainted: G W [ 0.036568] ------------------------------- [ 0.036708] arch/x86/kernel/cpu/mcheck/mce.c:194 suspicious rcu_dereference_index_check() usage! [ 0.036998] [ 0.036999] other info that might help us debug this: [ 0.037000] [ 0.037412] [ 0.037412] rcu_scheduler_active = 1, debug_locks = 0 [ 0.037689] no locks held by swapper/0/1. [ 0.037828] [ 0.037829] stack backtrace: [ 0.037999] Pid: 1, comm: swapper/0 Tainted: G W 3.3.0-rc6-00104-gf3969bf78f14 #1 [ 0.038245] Call Trace: [ 0.039003] [] lockdep_rcu_suspicious+0xd8/0xe1 [ 0.039148] [] ? thermal_init+0x8b/0x8b [ 0.039292] [] mce_register_decode_chain+0xa4/0x179 [ 0.039435] [] ? thermal_init+0x8b/0x8b [ 0.039578] [] mce_amd_init+0x153/0x157 [ 0.039721] [] do_one_initcall+0x7f/0x134 [ 0.039864] [] kernel_init+0x59/0x114 [ 0.040000] [] kernel_thread_helper+0x4/0x10 [ 0.040144] [] ? local_clock+0xf/0x3b [ 0.040286] [] ? finish_task_switch+0x88/0xee [ 0.040429] [] ? _raw_spin_unlock_irq+0x38/0x55 [ 0.040572] [] ? retint_restore_args+0xe/0xe [ 0.040715] [] ? start_kernel+0x2e2/0x2e2 [ 0.040857] [] ? gs_change+0xb/0xb [ 0.045018] lockdep: fixing up alternatives. [ 0.048040] Booting Node 0, Processors #1 [ 0.048118] smpboot cpu 1: start_ip = 9a000 [ 0.061016] Switch to broadcast mode on CPU1 [ 0.065027] lockdep: fixing up alternatives. [ 0.066014] #2 [ 0.066051] smpboot cpu 2: start_ip = 9a000 [ 0.078017] Switch to broadcast mode on CPU2 [ 0.082029] lockdep: fixing up alternatives. [ 0.083016] #3 Ok. [ 0.083154] smpboot cpu 3: start_ip = 9a000 [ 0.095022] Brought up 4 CPUs ... -- Regards/Gruss, Boris.