[libvirt] [PATCH] Check for existence of interface prior to setting terminate flag

[Eric Blake]

On 05/31/2013 06:06 AM, John Ferlan wrote:
> https://bugzilla.redhat.com/show_bug.cgi?id=903480
> 
> During domain destruction it's possible that the learnIPAddressThread has
> already removed the interface prior to the teardown filter path being run.
> The teardown code would only be telling the thread to terminate.
> ---
>  src/nwfilter/nwfilter_learnipaddr.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/src/nwfilter/nwfilter_learnipaddr.c b/src/nwfilter/nwfilter_learnipaddr.c
> index 2b49333..c56d119 100644
> --- a/src/nwfilter/nwfilter_learnipaddr.c
> +++ b/src/nwfilter/nwfilter_learnipaddr.c
> @@ -251,6 +251,14 @@ virNWFilterTerminateLearnReq(const char *ifname) {
>      int ifindex;
>      virNWFilterIPAddrLearnReqPtr req;
>  
> +    /* It's possible that it's already be removed as a result of

s/be/been/

> +     * virNWFilterDeregisterLearnReq during learnIPAddressThread() exit
> +     */
> +    if (virNetDevExists(ifname) != 1) {
> +        virResetLastError();
> +        return 0;
> +    }
> +

ACK, and okay for 1.0.6.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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