From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761816AbYEFFi1 (ORCPT ); Tue, 6 May 2008 01:38:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756743AbYEFFh6 (ORCPT ); Tue, 6 May 2008 01:37:58 -0400 Received: from chilli.pcug.org.au ([203.10.76.44]:43976 "EHLO smtps.tip.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754978AbYEFFh5 (ORCPT ); Tue, 6 May 2008 01:37:57 -0400 Date: Tue, 6 May 2008 15:37:46 +1000 From: Stephen Rothwell To: Daniel Hazelton Cc: linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, Ingo Molnar Subject: Re: linux-next 5/5 does not boot Message-Id: <20080506153746.0a33d9aa.sfr@canb.auug.org.au> In-Reply-To: <200805052004.33804.dhazelton@enter.net> References: <200805052004.33804.dhazelton@enter.net> X-Mailer: Sylpheed 2.5.0beta3 (GTK+ 2.12.9; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA1"; boundary="Signature=_Tue__6_May_2008_15_37_46_+1000__m.YuACLodRfNiC1" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Signature=_Tue__6_May_2008_15_37_46_+1000__m.YuACLodRfNiC1 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable cc'ing Ingo ... On Mon, 5 May 2008 20:04:33 -0400 Daniel Hazelton wro= te: > > This may be related to one of the stack dumps I reported earlier as occur= ring=20 > when booting the 4/30 linux-next tree... >=20 > During two attempted boots of the 5/5 tree using the same config as the 4= /30=20 > tree the system locked solid at "testing tracer ftrace". >=20 > The 4/30 tree produced the following dump (the 5/5 tree locks solid as so= on as=20 > the test is started): > [ 10.238230] Testing tracer ftrace: <4>------------[ cut here ]--------= ---- > [ 10.356558] WARNING: at kernel/lockdep.c:2712 check_flags+0xfb/0x180() > [ 10.356726] Modules linked in: > [ 10.356915] Pid: 1, comm: swapper Not tainted 2.6.25-next-20080430 #2 > [ 10.357718] > [ 10.357722] Call Trace: > [ 10.357939] [] warn_on_slowpath+0x64/0x90 > [ 10.358174] [] ? tick_get_tick_sched+0x9/0x30 > [ 10.358337] [] ? __update_rq_clock+0x68/0x140 > [ 10.358501] [] ? trace_hardirqs_off+0xd/0x10 > [ 10.358665] [] ? trace_hardirqs_off+0xd/0x10 > [ 10.358827] [] ? function_trace_call+0x9e/0xa0 > [ 10.358992] [] ? ftrace_call+0x5/0x2b > [ 10.359148] [] ? cpu_clock+0xda/0x190 > [ 10.359302] [] check_flags+0xfb/0x180 > [ 10.359457] [] lock_acquire+0x65/0xd0 > [ 10.359614] [] cpu_clock+0xf9/0x190 > [ 10.359769] [] ftrace_now+0x9/0x10 > [ 10.359920] [] trace_function+0xc4/0x260 > [ 10.360079] [] ? _local_bh_enable+0x63/0xc0 > [ 10.360240] [] ? sub_preempt_count+0x9/0x90 > [ 10.360400] [] ? _local_bh_enable+0x63/0xc0 > [ 10.360561] [] ? sub_preempt_count+0x9/0x90 > [ 10.360721] [] function_trace_call+0x6c/0xa0 > [ 10.360883] [] ftrace_call+0x5/0x2b > [ 10.361038] [] ? sub_preempt_count+0x9/0x90 > [ 10.361199] [] _local_bh_enable+0x63/0xc0 > [ 10.361357] [] __do_softirq+0xfe/0x150 > [ 10.361514] [] call_softirq+0x1c/0x30 > [ 10.361669] [] do_softirq+0x6a/0xb0 > [ 10.361823] [] irq_exit+0xa5/0xb0 > [ 10.361975] [] smp_apic_timer_interrupt+0x9e/0xf0 > [ 10.362143] [] apic_timer_interrupt+0x6b/0x70 > [ 10.362301] [] ?=20 > _spin_unlock_irqrestore+0x68/0x80 > [ 10.362543] [] ? try_to_wake_up+0xab/0x270 > [ 10.362704] [] ? ftrace_call+0x5/0x2b > [ 10.362860] [] ? wake_up_process+0x15/0x20 > [ 10.362979] [] ? kthread_create+0xa4/0x120 > [ 10.362979] [] ? do_stop+0x0/0x190 > [ 10.362979] [] ? mark_held_locks+0x3e/0x80 > [ 10.362979] [] ? trace_hardirqs_on+0xd/0x10 > [ 10.362979] [] ? trace_hardirqs_on_caller+0xf5/0x1b0 > [ 10.362979] [] ? lockdep_init_map+0x4b/0x140 > [ 10.362979] [] ? __spin_lock_init+0x38/0x70 > [ 10.362979] [] ? init_waitqueue_head+0x24/0x40 > [ 10.362979] [] ? __ftrace_modify_code+0x0/0xa0 > [ 10.362979] [] ? __stop_machine_run+0x85/0xf0 > [ 10.362979] [] ? __ftrace_modify_code+0x0/0xa0 > [ 10.362979] [] ? __ftrace_modify_code+0x0/0xa0 > [ 10.362979] [] ? __ftrace_modify_code+0x0/0xa0 > [ 10.362979] [] ? stop_machine_run+0x33/0x60 > [ 10.362979] [] ? ftrace_run_update_code+0x20/0x30 > [ 10.362979] [] ? unregister_ftrace_function+0x14a/0= x190 > [ 10.362979] [] ? tracing_stop_function_trace+0x10/0= x20 > [ 10.362979] [] ? stop_function_trace+0x9/0x20 > [ 10.362979] [] ? function_trace_ctrl_update+0x17/0x= 20 > [ 10.362979] [] ?=20 > trace_selftest_startup_function+0xae/0x140 > [ 10.362979] [] ? register_tracer+0x11d/0x1f0 > [ 10.362979] [] ? init_function_trace+0x10/0x20 > [ 10.362979] [] ? kernel_init+0x164/0x2f0 > [ 10.362979] [] ? sub_preempt_count+0x9/0x90 > [ 10.362979] [] ? _spin_unlock_irq+0x3b/0x60 > [ 10.362979] [] ? trace_hardirqs_on_thunk+0x3a/0x3f > [ 10.362979] [] ? trace_hardirqs_on_caller+0xf5/0x1b0 > [ 10.362979] [] ? child_rip+0xa/0x12 > [ 10.362979] [] ? restore_args+0x0/0x30 > [ 10.362979] [] ? kernel_init+0x0/0x2f0 > [ 10.362979] [] ? child_rip+0x0/0x12 > [ 10.362979] > [ 10.362979] ---[ end trace 5a5d197966b56a2e ]--- > [ 10.362979] irq event stamp: 3391956 > [ 10.362979] hardirqs last enabled at (3391954): []= =20 > trace_hardirqs_on+0xd/0x10 > [ 10.362979] hardirqs last disabled at (3391955): []= =20 > trace_hardirqs_off+0xd/0x10 > [ 10.362979] softirqs last enabled at (3391956): []= =20 > __do_softirq+0xfe/0x150 > [ 10.362979] softirqs last disabled at (3391933): []= =20 > call_softirq+0x1c/0x30 > [ 10.376978] kstopmachine used greatest stack depth: 6000 bytes left > [ 10.377650] PASSED >=20 > config for 5/5 tree will be provided on request. Dmesg from 4/30 tree is = also=20 > available. System had not mounted the root drive before the ftrace crash,= so=20 > I have no available logs or dmesg from the 5/5 tree. If asked, I will att= empt=20 > to setup a netconsole and try to capture the logs there. >=20 > DRH --=20 Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/ --Signature=_Tue__6_May_2008_15_37_46_+1000__m.YuACLodRfNiC1 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIH+6vTgG2atn1QN8RAgftAJ4/M6o2SPHexLkhkw8iM/t1eh490ACfTU4Q KCKXL+VGG3/qwtjkvgzVLUA= =slAK -----END PGP SIGNATURE----- --Signature=_Tue__6_May_2008_15_37_46_+1000__m.YuACLodRfNiC1--