linux-kernel - Re: mmotm 2010-05-11 - dies in pm_qos_update

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Date:	Thu, 13 May 2010 10:34:38 -0400
From:	Valdis.Kletnieks@...edu
To:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Mark Gross <mgross@...ux.intel.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, e1000-devel@...ts.sourceforge.net,
	netdev@...r.kernel.org
Subject: Re: mmotm 2010-05-11 - dies in pm_qos_update_request()

On Wed, 12 May 2010 23:07:20 +0200, "Rafael J. Wysocki" said:
> On Wednesday 12 May 2010, Valdis.Kletnieks@...edu wrote:
> > On Tue, 11 May 2010 18:21:22 PDT, akpm@...ux-foundation.org said:
> > > The mm-of-the-moment snapshot 2010-05-11-18-20 has been uploaded to
> > > 
> > >    http://userweb.kernel.org/~akpm/mmotm/
> > 
> > Dell Latitude E6500, x86_64 kernel.
> > 
> > Died a horrid death at boot in the e1000e driver.  Seems to be
> > something in linux-next.patch. Didn't get a netconsole trace for obvious
> > reasons...
> > 
> > Copied-by-hand traceback:
> > pm_qos_update_request()+0x22
> > e1000_configure+0x478
> > e1000_open_device+0xee
> > ? _raw_notifier_call_chain+0xf
> > __dev_open+0xec
> > dev_open+0x1b
> > netpoll_setup+0x28b
> > init_netconsole+0xbc
> > 
> > I suspect this commit:
> > 
> > commit 23606cf5d1192c2b17912cb2ef6e62f9b11de133
> > Author: Rafael J. Wysocki <rjw@...k.pl>
> > Date:   Sun Mar 14 14:35:17 2010 +0000
> > 
> >     e1000e / PCI / PM: Add basic runtime PM support (rev. 4)
> 
> No, I don't think so.  I'm running -rc6 with this patch applied on a box with
> e1000e and it works just fine.
> 
> Please try to revert this one instead:
> 
> http://git.kernel.org/?p=linux/kernel/git/rafael/suspend-2.6.git;a=patch;h=ed77134bfccf5e75b6cbadab268e559dbe6a4ebb

Confirming - reverting that patch and doing the build fixup results in a
kernel that doesn't blow up in the e1000e driver...

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