[Intel-wired-lan] [net PATCH] ixgbe: Fix NULL pointer dereference in ethtool loopback test

[Björn Töpel]

On Mon, 8 Mar 2021 at 21:42, Alexander Duyck <alexander.duyck at gmail.com> wrote:
>
> From: Alexander Duyck <alexanderduyck at fb.com>
>
> The ixgbe driver currently generates a NULL pointer dereference when
> performing the ethtool loopback test. This is due to the fact that there
> isn't a q_vector associated with the test ring when it is setup as
> interrupts are not normally added to the test rings.
>
> To address this I have added code that will check for a q_vector before
> returning a napi_id value. If a q_vector is not present it will return a
> value of 0.
>
> Fixes: b02e5a0ebb17 ("xsk: Propagate napi_id to XDP socket Rx path")
> Signed-off-by: Alexander Duyck <alexanderduyck at fb.com>

Thanks Alex!

Acked-by: Björn Töpel <bjorn.topel at intel.com>

I'll look into if this applies to the other Intel drivers as well.


Björn
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