linux-kernel - Re: 2.6.29-rc1 does not boot

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Date:	Mon, 12 Jan 2009 21:45:44 -0700
From:	Michal Jaegermann <michal@...pspace.math.ualberta.ca>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Dieter Ries <clip2@....de>,
	Maciej Rutecki <maciej.rutecki@...il.com>, travis@....com,
	rusty@...tcorp.com.au, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: 2.6.29-rc1 does not boot

On Mon, Jan 12, 2009 at 07:59:54PM +0100, Ingo Molnar wrote:
> * Dieter Ries <clip2@....de> wrote:
> 
> > 
> > This is what I have got:
> > 
> > [   12.340122] =============================================
> > [   12.341044] [ INFO: possible recursive locking detected ]
> > [   12.341044] 2.6.29-rc1-00041-gacd1e11 #143
> > [   12.341044] ---------------------------------------------
> > [   12.341044] events/0/9 is trying to acquire lock:
> > [   12.341044]  (events){--..}, at: [<ffffffff80254783>]
....
> > Hope that helps,
> 
> thanks, it helps!

I bumped into something pretty similar, although not precisely the
same, with 2.6.29-0.28.rc1.fc11.x86_64 Fedora rawhide kernel.

=============================================
[ INFO: possible recursive locking detected ]
2.6.29-0.28.rc1.fc11.x86_64 #1
---------------------------------------------
events/0/6 is trying to acquire lock:
 (events){--..}, at: [<ffffffff8105b843>] flush_workqueue+0x0/0xa4

but task is already holding lock:
 (events){--..}, at: [<ffffffff8105ae26>] run_workqueue+0xb1/0x20a

It appears that this during an initialization of AC97 sound system.
What I got is at https://bugzilla.redhat.com/show_bug.cgi?id=479778
and close to the bottom of
https://bugzilla.redhat.com/attachment.cgi?id=328808

It is a throw of a dice if this kernel will boot or not.

   Michal
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