linux-kernel - Re: BUG() during suspend to disk (2.6.21-rc2, x86

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Date:	Wed, 7 Mar 2007 11:53:20 +0530
From:	Vivek Goyal <vgoyal@...ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Pavel Machek <pavel@....cz>, Andi Kleen <ak@...e.de>
Subject: Re: BUG() during suspend to disk (2.6.21-rc2, x86_64)

On Tue, Mar 06, 2007 at 09:56:46PM +0100, Rafael J. Wysocki wrote:
> Hi,
> 
> On Tuesday, 6 March 2007 11:32, Vivek Goyal wrote:
> > Hi,
> > 
> > I see following BUG() on serial console while hibernating on a x86_64
> > machine. I am using 2.6.21-rc2 kernel.
> 
> I see it too.
> 
> > BUG: at arch/x86_64/kernel/acpi/sleep.c:70 init_low_mapping()
> > 
> > Call Trace:
> >  [<ffffffff80214b9a>] acpi_save_state_mem+0x70/0xd6
> >  [<ffffffff8036e90e>] acpi_pm_enter+0x23/0xc1
> >  [<ffffffff8024eec4>] pm_suspend_disk+0x1ac/0x228
> >  [<ffffffff8024dc9b>] enter_state+0x50/0x1e6
> >  [<ffffffff8036ecce>] acpi_system_write_sleep+0x5c/0x79
> >  [<ffffffff8027b767>] vfs_write+0xad/0x136
> >  [<ffffffff8027bca4>] sys_write+0x45/0x6e
> >  [<ffffffff80209bbe>] system_call+0x7e/0x83
> 
> Hm, it doesn't like the fact that nonboot CPUs are online at that point, but
> we don't do anything to disable them.  Should we?
> 
> I think the appended patch might work.
> 

Yes. It does work for me. Thanks

Vivek
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