netdev - Re: [PATCH] xen-netfront: Delete rx_refill_timer in xennet_disconnect

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Message-ID: <bc3bf927-568e-043a-2785-16e6c3628359@suse.com>
Date:   Fri, 3 Feb 2017 10:38:14 +0100
From:   Juergen Gross <jgross@...e.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:     xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, vineethp@...zon.com,
        wei.liu2@...rix.com, paul.durrant@...rix.com,
        stable@...r.kernel.org
Subject: Re: [PATCH] xen-netfront: Delete rx_refill_timer in
 xennet_disconnect_backend()

On 30/01/17 18:45, Boris Ostrovsky wrote:
> rx_refill_timer should be deleted as soon as we disconnect from the
> backend since otherwise it is possible for the timer to go off before
> we get to xennet_destroy_queues(). If this happens we may dereference
> queue->rx.sring which is set to NULL in xennet_disconnect_backend().
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> CC: stable@...r.kernel.org

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen