Re: [PATCH] net: macb: Increment rx bd head after allocating skb and buffer

[Paolo Abeni <pabeni@redhat.com>]

Hello,

On Mon, 2022-05-09 at 17:49 +0530, Harini Katakam wrote:
> In gem_rx_refill rx_prepared_head is incremented at the beginning of
> the while loop preparing the skb and data buffers. If the skb or data
> buffer allocation fails, this BD will be unusable BDs until the head
> loops back to the same BD (and obviously buffer allocation succeeds).
> In the unlikely event that there's a string of allocation failures,
> there will be an equal number of unusable BDs and an inconsistent RX
> BD chain. Hence increment the head at the end of the while loop to be
> clean.
> 
> Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

This looks like targeting the "net" tree, please repost adding a
suitable Fixes tag.

Thanks,

Paolo