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

[Jürgen Groß <jgross@xxxxxxxx>]

On 04.02.21 00:48, Jakub Kicinski wrote:
> On Tue,  2 Feb 2021 08:09:38 +0100 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>
> Should we route this change via networking trees? I see the bug did not
> go through networking :)
I'm fine with either networking or the Xen tree. It should be included
in 5.11, though. So if you are willing to take it, please do so.


Juergen

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