netdev - Re: [PATCH] xen/netback: avoid race in xenvif_rx_ring_slots

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Date:   Tue, 2 Feb 2021 16:22:34 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Juergen Gross <jgross@...e.com>
Cc:     xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Wei Liu <wei.liu@...nel.org>,
        Paul Durrant <paul@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Igor Druzhinin <igor.druzhinin@...rix.com>,
        stable@...r.kernel.org
Subject: Re: [PATCH] xen/netback: avoid race in
 xenvif_rx_ring_slots_available()

On Tue, Feb 02, 2021 at 08:09:38AM +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@...rix.com>
> Fixes: 23025393dbeb3b8b3 ("xen/netback: use lateeoi irq binding")
> Cc: stable@...r.kernel.org
> Signed-off-by: Juergen Gross <jgross@...e.com>

Acked-by: Wei Liu <wl@....org>