From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755651Ab0BTOBk (ORCPT ); Sat, 20 Feb 2010 09:01:40 -0500 Received: from he.sipsolutions.net ([78.46.109.217]:55513 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755285Ab0BTOBj (ORCPT ); Sat, 20 Feb 2010 09:01:39 -0500 Subject: Re: sysfs lockdep complaint From: Johannes Berg To: =?ISO-8859-1?Q?Am=E9rico?= Wang Cc: Kernel development list , "Eric W. Biederman" In-Reply-To: <20100220135122.GB3000@hack> References: <1266485543.6539.4.camel@jlt3.sipsolutions.net> <2375c9f91002200126x22b262b3r8b9b58e3cee34077@mail.gmail.com> <1266664814.11514.5.camel@jlt3.sipsolutions.net> <20100220135122.GB3000@hack> Content-Type: text/plain; charset="UTF-8" Date: Sat, 20 Feb 2010 15:01:33 +0100 Message-ID: <1266674493.18465.9.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 X-Mailer: Evolution 2.29.3.2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2010-02-20 at 21:51 +0800, Américo Wang wrote: > Please send us the backtraces you got, we could expect this. The first one is fun: [ 1.576226] windfarm: initializing for dual-core desktop G5 [ 1.577182] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577190] ------------[ cut here ]------------ [ 1.577192] Badness at kernel/lockdep.c:2706 [ 1.577196] NIP: c0000000000b6a68 LR: c0000000000b6a4c CTR: c0000000003afedc [ 1.577200] REGS: c000000216197620 TRAP: 0700 Not tainted (2.6.33-rc8-wl-64022-gcdee415-dirty) [ 1.577203] MSR: 9000000000029032 CR: 28000082 XER: 200fffff [ 1.577214] TASK = c000000216198000[1] 'swapper' THREAD: c000000216194000 CPU: 2 [ 1.577217] GPR00: 0000000000000000 c0000002161978a0 c000000000b10328 0000000000000001 [ 1.577223] GPR04: 0000000000000001 c000000000071638 0000000000000000 0000000000000002 [ 1.577229] GPR08: 0000000000000000 c0000000014320f0 0000000000000001 c000000000b27638 [ 1.577235] GPR12: 0000000000000041 c000000000b21880 0000000000000056 0000000001400000 [ 1.577241] GPR16: 0000000000240ee0 c000000000718923 c0000000007ff6ec 000000000000005e [ 1.577247] GPR20: 00000000ffb30f40 c0000000007188b9 0000000000000000 0000000000240ed0 [ 1.577253] GPR24: 0000000000000108 0000000000000000 fffffffffffffff4 c00000021488b000 [ 1.577259] GPR28: 6b6b6b6b6b6b6b6b c00000021488bcc8 c000000000a77780 c0000002161978a0 [ 1.577271] NIP [c0000000000b6a68] .lockdep_init_map+0x148/0x66c [ 1.577276] LR [c0000000000b6a4c] .lockdep_init_map+0x12c/0x66c [ 1.577278] Call Trace: [ 1.577282] [c0000002161978a0] [c0000000000b6a34] .lockdep_init_map+0x114/0x66c (unreliable) [ 1.577289] [c0000002161979a0] [c0000000001efd88] .sysfs_add_file_mode+0x90/0x124 [ 1.577294] [c000000216197a60] [c0000000001efe58] .sysfs_add_file+0x3c/0x50 [ 1.577299] [c000000216197b00] [c0000000001effb4] .sysfs_create_file+0x5c/0x74 [ 1.577305] [c000000216197ba0] [c0000000004292b0] .device_create_file+0x40/0x5c [ 1.577311] [c000000216197c40] [c000000000441178] .wf_register_control+0x108/0x178 [ 1.577316] [c000000216197cf0] [c0000000004440a4] .smu_fan_create+0x548/0x598 [ 1.577323] [c000000216197da0] [c0000000007e5e6c] .smu_controls_init+0xb0/0x1f4 [ 1.577329] [c000000216197e40] [c0000000000084e4] .do_one_initcall+0xac/0x204 [ 1.577335] [c000000216197ef0] [c0000000007b84b8] .kernel_init+0x1f0/0x270 [ 1.577340] [c000000216197f90] [c000000000028f8c] .kernel_thread+0x54/0x70 [ 1.577343] Instruction dump: [ 1.577346] e93e81c8 80090000 2f800000 409e04f4 482fa5e9 60000000 2fa30000 419e04e4 [ 1.577355] e93e81d0 80090000 2f800000 409e04d4 <0fe00000> 480004cc fb9d0000 e93e8018 [ 1.577375] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577385] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577397] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577413] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577423] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577435] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.577446] BUG: key 6b6b6b6b6b6b6b6b not in .data! [ 1.839465] BUG: key 6b6b6b6b6b6b6b6b not in .data! key pointing to something freed? wtf? johannes