[SRU][Trusty][PATCH 3/3] VSOCK: Detach QP check should filter out non matching QPs.

[Kleber Souza]

On 07/31/18 15:50, Eric Desrochers wrote:

There's no "From ..." at the beginning of the body, so the authorship of
the patch is wrongly assigned when applying it. I'll fix it.


> BugLink: https://bugs.launchpad.net/bugs/1780470
> 
> The check in vmci_transport_peer_detach_cb should only allow a
> detach when the qp handle of the transport matches the one in
> the detach message.
> 
> Testing: Before this change, a detach from a peer on a different
> socket would cause an active stream socket to register a detach.
> 
> Reviewed-by: George Zhang <georgezhang at vmware.com>
> Signed-off-by: Jorgen Hansen <jhansen at vmware.com>
> Signed-off-by: David S. Miller <davem at davemloft.net>
> (cherry picked from 8ab18d71de8b07d2c4d6f984b718418c09ea45c5)
> Signed-off-by: Eric Desrochers <eric.desrochers at canonical.com>
> ---
>  net/vmw_vsock/vmci_transport.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
> index 0d1fa05cc8ed..e0436a962789 100644
> --- a/net/vmw_vsock/vmci_transport.c
> +++ b/net/vmw_vsock/vmci_transport.c
> @@ -844,7 +844,7 @@ static void vmci_transport_peer_detach_cb(u32 sub_id,
>  	 * qp_handle.
>  	 */
>  	if (vmci_handle_is_invalid(e_payload->handle) ||
> -	    vmci_handle_is_equal(trans->qp_handle, e_payload->handle))
> +	    !vmci_handle_is_equal(trans->qp_handle, e_payload->handle))
>  		return;
>  
>  	/* We don't ask for delayed CBs when we subscribe to this event (we
>