linux-kernel - Re: [2/6] 2.6.21-rc2: known regressions

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Message-ID: <20070308232857.GA8347@elte.hu>
Date:	Fri, 9 Mar 2007 00:28:57 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Michael S. Tsirkin" <mst@...lanox.co.il>,
	Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Jeff Chua <jeff.chua.linux@...il.com>, pavel@...e.cz,
	linux-pm@...ts.osdl.org, lenb@...nel.org,
	linux-acpi@...r.kernel.org, luming.yu@...el.com,
	Arkadiusz Miskiewicz <arekm@...en.pl>,
	Konstantin Karasyov <konstantin.a.karasyov@...el.com>,
	Greg KH <greg@...ah.com>,
	linux-usb-devel@...ts.sourceforge.net,
	Thomas Meyer <thomas.mey@....de>, Meelis Roos <mroos@...ux.ee>,
	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>,
	Janosch Machowinski <jmachowinski@....de>,
	vladimir.p.lebedev@...el.com,
	Ash Milsted <thatistosayiseenem@...ab.com>,
	dmitry.torokhov@...il.com, linux-input@...ey.karlin.mff.cuni.cz,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [2/6] 2.6.21-rc2: known regressions


* Ingo Molnar <mingo@...e.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
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