Re: [PATCH] xen/netback: avoid race in xenvif_rx_ring_slots_available()

[Jürgen Groß]

On 02.02.21 16:26, Igor Druzhinin wrote:
> On 02/02/2021 07:09, Juergen Gross wrote:
> > Since commit 23025393dbeb3b8b3 ("xen/netback: use lateeoi irq binding")
> > xenvif_rx_ring_slots_available() is no longer called only from the rx
> > queue kernel thread, so it needs to access the rx queue with the
> > associated queue held.
> >
> > Reported-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
> > Fixes: 23025393dbeb3b8b3 ("xen/netback: use lateeoi irq binding")
> > Cc: stable@xxxxxxxxxxxxxxx
> > Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
>
> Appreciate a quick fix! Is this the only place that sort of race could
> happen now?

I checked and didn't find any other similar problem.


Juergen

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