linux-kernel - [2.6.21.1] soft lockup detected on CPU#1

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Date:	Mon, 4 Jun 2007 19:29:38 +0200
From:	Folkert van Heusden <folkert@...heusden.com>
To:	linux-kernel@...r.kernel.org
Subject: [2.6.21.1] soft lockup detected on CPU#1 - timers

Hi,

Suddenly out of the blue (NO powertop was running or so) my system threw
a message in the logging about a soft lockup:

[330718.331426] BUG: soft lockup detected on CPU#1!
[330718.331483]  [<c1004d53>] show_trace_log_lvl+0x1a/0x30
[330718.331574]  [<c1004d7b>] show_trace+0x12/0x14
[330718.331661]  [<c1004e75>] dump_stack+0x16/0x18
[330718.331747]  [<c104dd77>] softlockup_tick+0xa6/0xc2
[330718.331834]  [<c1026855>] run_local_timers+0x12/0x14
[330718.331923]  [<c1026669>] update_process_times+0x72/0xa1
[330718.332009]  [<c103867b>] tick_sched_timer+0x53/0xb6
[330718.332094]  [<c1033d6a>] hrtimer_interrupt+0x189/0x1e3
[330718.332180]  [<c100e9e2>] local_apic_timer_interrupt+0x55/0x5b
[330718.332268]  [<c100ea12>] smp_apic_timer_interrupt+0x2a/0x39
[330718.332354]  [<c1004a3f>] apic_timer_interrupt+0x33/0x38
[330718.332441]  [<c10020f2>] cpu_idle+0x6b/0x85
[330718.332526]  [<c130e218>] start_secondary+0xe8/0x30a
[330718.333480]  [<00000000>] 0x0
[330718.333579]  =======================

I'm a little puzzled why cpu_idle is called anyway as the load of the
system is on average at least 2.5 (see
http://keetweej.vanheusden.com/load.png ).


Folkert van Heusden

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