linux-kernel - Re: Acpi deadlocks with 3.7.0-rc4

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Message-ID: <50B75488.3090904@redhat.com>
Date:	Thu, 29 Nov 2012 13:26:48 +0100
From:	Zdenek Kabelac <zkabelac@...hat.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Acpi deadlocks with 3.7.0-rc4

Dne 29.11.2012 11:59, Rafael J. Wysocki napsal(a):
> On Thursday, November 29, 2012 11:13:10 AM Zdenek Kabelac wrote:
>> Dne 28.11.2012 20:07, Linus Torvalds napsal(a):
>>> whole "prefix_node" pointer is bogus. It seems to have the value 0x1000.
>>
>> Tested also this patch with this result:
>>
>> https://bugzilla.kernel.org/show_bug.cgi?id=51071#c8
>>
>> So while it's made it pass suspend/resume, it's not really usable
>> as docking then.
>
> This just makes acpi_ns_lookup() always return acpi_gbl_root_node
> for things looked up by acpi_ns_get_node() as far as I can say.
>
> Hmm.
>
> If my theory correct, the patch below should catch the bug.  Can you please
> test it?
>

Ok now crashing right after 'undock' button press:

https://bugzilla.kernel.org/show_bug.cgi?id=51071#c10


Zdenek


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