linux-kernel - Re: 3.3.0-rc1 kernel becomes unresponsive

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Date:	Tue, 24 Jan 2012 15:52:47 +0100
From:	Stanislaw Gruszka <sgruszka@...hat.com>
To:	Arend van Spriel <arend@...adcom.com>
Cc:	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 3.3.0-rc1 kernel becomes unresponsive

On Tue, Jan 24, 2012 at 11:34:25AM +0100, Arend van Spriel wrote:
> I moved my development work to 3.3.0-rc1 from wireless-testing
> repository. After loading the brcmfmac driver (12 sec.) I suddenly see
> the BUG message 'scheduling while atomic' and it fills up the entire log
> with the machine becoming totally unresponsive.
> 
> Any suggestions on where to start looking. What type of problems could
> cause this?

There are various debug config options which allow to narrow such problems
down. CONFIG_LOCKDEP seems to be most useful, but there are other quite
helpful too. Try to add options from attached file to your .config (do not
forgot to "make oldconfig" and check if these options ware not wiped out),
and after recompile see if kernel will print some more valuable messages.

Stanislaw

View attachment "debug.config" of type "text/plain" (4799 bytes)