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    SubjectRe: [PATCH v9 3/3] hv_netvsc: Use vmbus_requestor to generate transaction IDs for VMBus hardening
    On Mon, Nov 09, 2020 at 11:04:02AM +0100, Andrea Parri (Microsoft) wrote:
    > From: Andres Beltran <lkmlabelt@gmail.com>
    >
    > Currently, pointers to guest memory are passed to Hyper-V as
    > transaction IDs in netvsc. In the face of errors or malicious
    > behavior in Hyper-V, netvsc should not expose or trust the transaction
    > IDs returned by Hyper-V to be valid guest memory addresses. Instead,
    > use small integers generated by vmbus_requestor as requests
    > (transaction) IDs.
    >
    > Signed-off-by: Andres Beltran <lkmlabelt@gmail.com>
    > Co-developed-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
    > Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
    > Reviewed-by: Michael Kelley <mikelley@microsoft.com>
    > Acked-by: Jakub Kicinski <kuba@kernel.org>
    > Cc: "David S. Miller" <davem@davemloft.net>
    > Cc: Jakub Kicinski <kuba@kernel.org>
    > Cc: netdev@vger.kernel.org

    Reviewed-by: Wei Liu <wl@xen.org>

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