On Thu, Sep 21, 2006 at 08:04:49PM +0100, Hugh Dickins wrote:
> BUG: unable to handle kernel paging request at virtual address 0010c744
> printing eip:
> c013be50
> *pde = 00000000
> Oops: 0002 [#1]
> Modules linked in: ntfs 8139too via_agp agpgart usb_storage ehci_hcd uhci_hcd usbcore
> CPU: 0
> EIP: 0060:[<c013be50>] Tainted: G M VLI
> EFLAGS: 00010282 (2.6.17 #2)
> EIP is at anon_vma_unlink+0x16/0x3c
> eax: 0010c740 ebx: cf1070cc ecx: cf107104 edx: cf8bc740
> esi: cf8bc740 edi: b7e82000 ebp: 00000000 esp: cdad7f58
>
> I haven't worked out the disassembly in detail to support the idea
> (though certainly anon_vma_unlink would be trying to list_del around
> here), but that eax and esi do suggest a corrupted list: somehow the
> top half of a pointer overwritten by the top half of LIST_POISON1.
>
> And in Anton's case, the top half of a pointer overwritten by the
> bottom half of LIST_POISON2.
>
> Maybe just coincidence, and I've nothing more illuminating to add;
> but just a hint of a list_del going very wrong somewhere?
Given a machine check happened, the state of the machine in general
is questionable. I'd recommend a run of memtest86+
Dave
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