Re: [Xen-devel] 2.6.32.27 dom0 - BUG: unable to handle kernel paging request

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Sun, Jan 09, 2011 at 01:07:26PM -0500, Christopher S. Aker wrote:
> On Jan 4, 2011, at 4:59 PM, Christopher S. Aker wrote:
> > 
> > I rebuilt with CONFIG_DEBUG_INFO, and surprisingly it appears valid at the 
> > same address:
> > 
> > # gdb vmlinux
> > (gdb) list *0xc1022781
> > 0xc1022781 is in vmalloc_sync_all 
> > (/build/xen/dom0/pv_ops/2.6.32.27-1-debug/arch/x86/include/asm/pgtable.h:434).
> > 429     #define pud_page(pud)           pfn_to_page(pud_val(pud) >> 
> > PAGE_SHIFT)
> > 430
> > 431     /* Find an entry in the second-level page table.. */
> > 432     static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
> > 433     {
> > 434             return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
> > 435     }
> > 436
> > 437     static inline int pud_large(pud_t pud)
> > 438     {
> 
> We hit the BUG again on a third test box -- at least it's fairly easy to 
> reproduce.  Has anyone had a chance to poke at this, or have a suggestion for 
> something for me to try/test?

I don't have that much memory as you, so I've only been running a smaller 
subset of those guests.
So far, nothing yet. How long did it take you to hit it? 

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