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From: Frans Pop <elendil@planet.nl>
To: Ingo Molnar <mingo@elte.hu>
Subject: Re: "APIC error on CPU1: 00(40)" during resume
Date: Sat, 20 Dec 2008 22:31:52 +0100
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
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On Wednesday 10 December 2008, Ingo Molnar wrote:
> regarding those APIC error messages:
> >        ACPI: Waking up from system sleep state S3
> >        APIC error on CPU1: 00(40)
> >        ACPI: EC: non-query interrupt received, switching to interrupt
>
> that does suggest that the APIC was re-enabled (we dont get any APIC
> error exceptions otherwise!), and its LVT was programmed as well, but
> somehow we got an erroneous APIC message from an illegal vector.

I wonder if this may help tracing the cause. Today I got a KERN_ERR in the 
middle of those messages:

ACPI: Waking up from system sleep state S3
BUG: sleeping function called from invalid context at kernel/sched.c:5571
in_atomic(): 0, irqs_disabled(): 1, pid: 70, name: kacpid
Pid: 70, comm: kacpid Not tainted 2.6.28-rc7-rjw #77
Call Trace:
 [<ffffffff80345013>] ? acpi_os_release_object+0x9/0xd
 [<ffffffff8022d588>] __might_sleep+0xcf/0xd1
 [<ffffffff80234e32>] __cond_resched+0x15/0x4b
 [<ffffffff8043b1d7>] _cond_resched+0x2d/0x38
 [<ffffffff80357bc9>] acpi_ps_complete_op+0x235/0x24b
 [<ffffffff803582de>] acpi_ps_parse_loop+0x6ff/0x859
 [<ffffffff803574db>] acpi_ps_parse_aml+0x7c/0x2bb
 [<ffffffff80358a35>] acpi_ps_execute_method+0x144/0x213
 [<ffffffff80354e9e>] acpi_ns_evaluate+0x152/0x230
 [<ffffffff803452d0>] ? acpi_os_execute_deferred+0x0/0x39
 [<ffffffff8034c6a6>] acpi_ev_asynch_execute_gpe_method+0xc1/0x119
 [<ffffffff803452fc>] acpi_os_execute_deferred+0x2c/0x39
 [<ffffffff802480c7>] run_workqueue+0x95/0x12a
 [<ffffffff80248251>] worker_thread+0xf5/0x109
 [<ffffffff8024b9cb>] ? autoremove_wake_function+0x0/0x38
 [<ffffffff8024815c>] ? worker_thread+0x0/0x109
 [<ffffffff8024b678>] kthread+0x49/0x76
 [<ffffffff8020d009>] child_rip+0xa/0x11
 [<ffffffff8022da41>] ? pick_next_task_fair+0x8b/0x93
 [<ffffffff8024b62f>] ? kthread+0x0/0x76
 [<ffffffff8020cfff>] ? child_rip+0x0/0x11
APIC error on CPU1: 00(40)
ACPI: EC: non-query interrupt received, switching to interrupt mode

This is the first time I've seen this error. Kernel is based on commit 
f6f7b52e2f61 (just after -rc7) and includes the final versions of the 
patches Rafael posted in this thread [1].

More complete log available on request.

Cheers,
FJP

[1] http://lkml.org/lkml/2008/12/6/69
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