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

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.


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