linux-kernel - Re: 3.16-rcX crashes on resume from Suspend-To-RAM

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Date:	Tue, 12 Aug 2014 16:26:15 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	markus@...schke.com
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: 3.16-rcX crashes on resume from Suspend-To-RAM

On Sat, 2014-08-09 at 03:14 -0700, Markus Gutschke wrote:
> I am back and have physical access to the machine now.
> 
great!

> I re-ran the test just to be sure, and I can confirm that "platform"
> does in fact result in a crash.
> 
what about "devices"?
I mean

# echo devices > /sys/power/pm_test

and see if that triggers the crash.

> Furthermore, I ran the test that Rui asked for. I suspended, resumed,
> and upon crashing power-cycled the machine ASAP. "dmesg" suggests that
> the problem is with LNXSYBUS:00 That doesn't tell me much, but
> hopefully it makes sense to you guys.
> 
[    0.930093]   Magic number: 10:810:122
[    0.930185] acpi LNXSYBUS:00: hash matches

This looks weird, ACPI will do nothing for LNXSYBUS devices during
resume.
Rafael, any thought on this?

thanks,
rui

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