Re: 2.6.21-rc3-mm2 (oops in move_freepages)

[Mel Gorman]

On Wed, 14 Mar 2007, Bjorn Helgaas wrote:

> On Wednesday 14 March 2007 12:59, Mel Gorman wrote:
> > > <SNIP>
> > > Virtual mem_map starts at 0xa0007fffc7200000
> > > Zone PFN ranges:
> >
> > Total aside, a message should have been printed out here with
> > "sizeof(struct page) = ??" when loglevel was set to 8. I wanted it so I
> > could work out PFNs from the faulting addresses. Can you find such a
> > string in the output of dmesg?
>
> You probably don't need this anymore, but sizeof(struct page) = 56.

Thanks, it allowed me to confirm that the fault happened in a definite 
hole based on the output of early_node_map[] so that's good to know. If it 
happened in a location that should have had memory, I would be worried.

> > > BUG: at drivers/pci/pci.c:679 pci_restore_state()
> > >
> > > Call Trace:
> > > [<a000000100014980>] show_stack+0x40/0xa0
> > >                                sp=e000004063a5fb90 bsp=e000004063a58f98
> > > [<a0000001000152b0>] dump_stack+0x30/0x60
> > >                                sp=e000004063a5fd60 bsp=e000004063a58f80
> > > [<a0000001003f8800>] pci_restore_state+0x480/0x4a0
> > >                                sp=e000004063a5fd60 bsp=e000004063a58f38
> > > [<a00000010051a0b0>] tg3_chip_reset+0x6d0/0x1020
> > ...
> > That doesn't look particularly healthy! Is this a known problem?
>
> Yeah, that's ugly, isn't it?  I hadn't got to worrying about that yet.

heh, ok.

--
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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