linux-kernel - Re: [BISECTED, REGRESSION] Successful resume from suspend but freezes after I/O

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Date:	Tue, 8 Dec 2009 02:13:20 +0100
From:	Volker Lanz <vl@...ra.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: [BISECTED, REGRESSION] Successful resume from suspend but freezes after I/O

On Tuesday 08 December 2009 00:05:11 Yinghai Lu wrote:
> the updated e820 table is the same to the one for 2.6.29...
> 
> so could be some other patch cause the problem.
> 
> please check if revert
> 2547089ca2db132e307ef68848ba029a8ec2f341
> could help.

I reverted to one commit before that, which would be 
eaa959df299157e2640fcb3321537501b6afd9e6
if I am not mistaken. I built and booted that kernel and could reproduce the 
freeze with it (TBH this was not surprising to me, because I originally pinned 
down the problem by bisecting the commits and this commit is after the one 
bisecting found. Am I missing a detail here?)

But strangely enough the freeze this time produced an oops before it locked 
the machine. I couldn't save it to a file but took a picture. The screenshot 
is here:
http://banane.volker-lanz.de/08122009013.jpg
The oops is _not _reproducable. After a reboot with this same kernel, a 
suspend/resume cycle and some I/O the machine locks again without showing the 
oops.

Volker
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