linux-kernel - WARNING: at kernel/lockdep.c:2592 trace_hardirqs_on

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Date:	Wed, 4 Apr 2012 06:40:03 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: WARNING: at kernel/lockdep.c:2592
 trace_hardirqs_on_caller+0x1a4/0x1b0()

Hi guys,

I get the following after resuming on 3.4-rc1. Any ideas how to debug this?

[  100.962703] Enabling non-boot CPUs ...
[  100.971361] lockdep: fixing up alternatives.
[  100.971383] Booting Node 0 Processor 1 APIC 0x1
[  100.982448] LVT offset 0 assigned for vector 0x400
[  100.984636] ------------[ cut here ]------------
[  100.984648] WARNING: at kernel/lockdep.c:2592 trace_hardirqs_on_caller+0x1a4/0x1b0()
[  100.984652] Hardware name: 30515QG
[  100.984654] Modules linked in: tun cpufreq_stats cpufreq_conservative cpufreq_powersave cpufreq_userspace binfmt_misc uinput kvm_amd kvm fuse dm_crypt dm_mod ipv6 vfat fat loop snd_hda_codec_conexant snd_hda_codec_hdmi snd_hda_intel arc4 snd_hda_codec rtl8192ce rtl8192c_common rtlwifi snd_hwdep snd_pcm mac80211 thinkpad_acpi radeon snd_seq cfg80211 snd_timer snd_seq_device ttm snd nvram video ohci_hcd pcspkr ehci_hcd soundcore powernow_k8 mperf microcode k10temp rfkill thermal evdev button battery processor drm_kms_helper snd_page_alloc thermal_sys ac
[  100.984739] Pid: 0, comm: swapper/1 Not tainted 3.4.0-rc1 #1
[  100.984743] Call Trace:
[  100.984751]  [<ffffffff8103588f>] warn_slowpath_common+0x7f/0xc0
[  100.984758]  [<ffffffff814296f0>] ? start_secondary+0x1ab/0x205
[  100.984764]  [<ffffffff810358ea>] warn_slowpath_null+0x1a/0x20
[  100.984769]  [<ffffffff8108d3f4>] trace_hardirqs_on_caller+0x1a4/0x1b0
[  100.984774]  [<ffffffff8108d40d>] trace_hardirqs_on+0xd/0x10
[  100.984779]  [<ffffffff814296f0>] start_secondary+0x1ab/0x205
[  100.984785] ---[ end trace c9b3d3b86e472b29 ]---
[  100.986201] CPU1 is up

Thanks.

-- 
Regards/Gruss,
    Boris.
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