Re: [Xen-devel] netback oops in Linux 3.14 / 3.15

[Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>]

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@xxxxxxxxxx> 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@xxxxxxxxxxxxx
> > > http://lists.xen.org/xen-devel
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel

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