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Date: Fri, 9 Mar 2007 00:28:57 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>, Adrian Bunk <bunk@stusta.de>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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       luming.yu@intel.com, Arkadiusz Miskiewicz <arekm@maven.pl>,
       Konstantin Karasyov <konstantin.a.karasyov@intel.com>,
       Greg KH <greg@kroah.com>, linux-usb-devel@lists.sourceforge.net,
       Thomas Meyer <thomas.mey@web.de>, Meelis Roos <mroos@linux.ee>,
       Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>,
       Janosch Machowinski <jmachowinski@gmx.de>, vladimir.p.lebedev@intel.com,
       Ash Milsted <thatistosayiseenem@gawab.com>, dmitry.torokhov@gmail.com,
       linux-input@atrey.karlin.mff.cuni.cz,
       "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [2/6] 2.6.21-rc2: known regressions
Message-ID: <20070308232857.GA8347@elte.hu>
References: <Pine.LNX.4.64.0702272105220.12485@woody.linux-foundation.org> <20070305015034.GG3441@stusta.de> <20070308123143.GF5149@mellanox.co.il> <Pine.LNX.4.64.0703080954220.10832@woody.linux-foundation.org> <20070308192554.GA2999@elte.hu> <20070308230705.GA4611@elte.hu> <20070308231246.GA6267@elte.hu>
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* Ingo Molnar <mingo@elte.hu> wrote:

> > Here's another suspend/resume artifact: one of my boxes wouldnt 
> > resume, it hangs at:
> > 
> > [    1.456633] pci 0000:00:18.2: resuming
> > [    1.456641] pci 0000:00:18.3: resuming
> > [    1.456648] 8139too 0000:05:07.0: resuming
> > [    1.456667] radeonfb 0000:01:00.0: resuming
> > 
> > the box is pingable but otherwise no console and it's hung as well. [I 
> > got the log above via netconsole]
> 
> unfortunately there's no way to get any backtrace out of the system at 
> this point - the timer interrupts are not active yet here, so i cannot 
> use the softlockup_tick patch to sample the lockup. Since it's 
> pingable i'll try to hack a dump_stack() into icmp_reply() ;-)

didnt succeed at that - no netconsole output during the hang. But the 
RADEON_FB .config options definitely make the difference. The video card 
in question is:

01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]

	Ingo