linux-kernel - Re: [Bug #13833] Kernel Oops when trying to suspend with ubifs mounted on block2mtd mtd device

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Date:	Tue, 28 Jul 2009 14:33:16 +0300
From:	saeed bishara <saeed.bishara@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>,
	David Woodhouse <David.Woodhouse@...el.com>
Cc:	Tobias Diedrich <ranma@...edrich.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	David Brownell <david-b@...bell.net>,
	Eric Miao <eric.y.miao@...il.com>, Pavel Machek <pavel@....cz>
Subject: Re: [Bug #13833] Kernel Oops when trying to suspend with ubifs 
	mounted on block2mtd mtd device

Hi
This patch crashes my system, when issue suspend to ram, the kernel
crashes mtd_cls_suspend when the mtd device is mtdXro, the problem is
the the mtdXro devices are of mtd_class, and the suspend function of
this class assumes that the "dev" is contained in mtd_into structure
(dev_to_mtd(dev)), but, the mtdXro device created using
device_create() so the dev is not contained in valid mtd_info
structure.

saeed


On Tue, Jul 28, 2009 at 1:43 AM, Rafael J. Wysocki<rjw@...k.pl> wrote:
> On Monday 27 July 2009, Tobias Diedrich wrote:
>> Rafael J. Wysocki wrote:
>> > This message has been generated automatically as a part of a report
>> > of recent regressions.
>> >
>> > The following bug entry is on the current list of known regressions
>> > from 2.6.30.  Please verify if it still should be listed and let me know
>> > (either way).
>>
>>
>> Well, the patch reverting the commit still applies to 2.6.31-rc4, so
>> I assume the issue persists,but I have not tried an unpatched
>> 2.6.31-rc4.
>
> Thanks for the update.
>
> Rafael
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