Bug#599089: linux-image-2.6.32-5-xen-686: Kernel Panics when using NFS from DomU to Dom0

[Jason Kendall <jakendall@gmail.com>]

Where do you guys commit? I didn't see it on the kernel git tree, and 
can't find a debian one.

Would this happen to make it into Squeeze soon? ETA?

Save me the trouble of a recompile :)

Cheers,
Jay


On 10-10-05 06:39 PM, Jeremy Fitzhardinge wrote:
>   On 10/05/2010 11:22 AM, Ian Campbell wrote:
>    
>> On Tue, 2010-10-05 at 09:54 -0700, Jeremy Fitzhardinge wrote:
>>      
>>> On 10/05/2010 02:52 AM, Ian Campbell wrote:
>>>        
>>>> On Tue, 2010-10-05 at 10:47 +0100, Ian Campbell wrote:
>>>>          
>>>>> In addition to the kernel logging of the error I get this from the
>>>>> hypervisor:
>>>>> (XEN) mm.c:2062:d0 Error pfn 16d99: rd=ffff83011fefa000,
>>>>> od=0000000000000000, caf=180000000000000, taf=0000000000000000
>>>>> (XEN) mm.c:658:d0 Could not get page ref for pfn 16d99
>>>>> (XEN) mm.c:3621:d0 Could not get page for mach->phys update
>>>>>            
>>>> Adding a bit more logging to the kernel I get:
>>>> gnttb_copy_grant_page old c22ebcd8 P:0x1ec8e M:0xc499d F:0x41000000
>>>> gnttb_copy_grant_page new c2324ce0 P:0x1fe18 M:0x11cd32 F:0x40000000
>>>> (XEN) mm.c:2062:d0 Error pfn 1cd32: rd=ffff83011fefa000, od=0000000000000000, caf=180000000000000, taf=0000000000000000
>>>> (XEN) mm.c:658:d0 Could not get page ref for pfn 1cd32
>>>> (XEN) mm.c:3621:d0 Could not get page for mach->phys update
>>>>
>>>> Notice how MFN 0x11cd32 has become 0x1cd32 by the time it gets to the
>>>> hypervisor!
>>>>          
>>> Oy, more of these.  It might be better to use PFN_PHYS().
>>>        
>> I thought there ought to be a helper but couldn't find one, PFN_PHYS
>> sounds like a good bet, unless we want to alias it as MFN_MACH or
>> something?
>>      
> Doesn't really seem worth it, unless phys_addr_t ends up not being large
> enough for a machine address.  But I think we rely on that pretty
> heavily anyway.
>
> I've committed it with that change.
>
>      J
>