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

["Christopher S. Aker" <caker@xxxxxxxxxxxx>]

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?

Thanks,
-Chris


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