Re: netback oops in Linux 3.14 / 3.15

[Zoltan Kiss <zoltan.kiss@schaman.hu>]

Yes, it does worth to backport if the patch referred in the commit 
message is there.

Zoli

On 19/08/14 04:30, Dennis Lan (dlan) wrote:
> Hello zoli:
>   should we back port this to longterm maintain kernel? current the
> most recent version is 3.14.17
>
> Lan
>
> On Wed, Jun 11, 2014 at 2:42 AM, Zoltan Kiss <zoltan.kiss@citrix.com> wrote:
>> Hi,
>>
>> It is very likely to be a recent issue, please apply this fix onto your
>> kernel:
>>
>> http://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/drivers/net/xen-netback?id=59ae9fc67007da8b5aea7b0a31c3607745cfbfee
>>
>> Zoli
>>
>>
>> On 10/06/14 19:20, James Dingwall wrote:
>>> Hi,
>>>
>>> Under Linux 3.14.6 and 3.15 I am getting a BUG_ON() from netback in
>>> xenvif_rx_action().  Under 3.15 it is the line at
>>> 629 which is triggering:
>>>
>>> BUG_ON(ring_slots_used > max_slots_needed);
>>>
>>> The conditions are a 3.15.0 dom0 with Xen 4.4.0, a guest domain running
>>> the same 3.15.0 kernel, an rsync in the guest
>>> where the source filesystem is NFS mounted from the dom0.
>>>
>>> I have added a printk to log the values which is seen as the first line in
>>> the attached trace.  Is there an off-by-one
>>> error in the calculation for max_slots_needed or is it worth adding some
>>> more printks to find out how the value was
>>> calculated?
>>>
>>> Please let me know if any other information about my configuration is
>>> required.
>>>
>>> Thanks,
>>> James
>>>
>>>
>>>
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@lists.xen.org
>>> http://lists.xen.org/xen-devel
>>>
>>
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