target/linux/generic/backport-5.15/752-04-v6.6-net-ethernet-mtk_wed-check-update_wo_rx_stats-in-mtk.patch

   1 From: Lorenzo Bianconi <lorenzo@kernel.org>
   2 Date: Tue, 12 Sep 2023 10:28:00 +0200
   3 Subject: [PATCH] net: ethernet: mtk_wed: check update_wo_rx_stats in
   4  mtk_wed_update_rx_stats()
   5
   6 Check if update_wo_rx_stats function pointer is properly set in
   7 mtk_wed_update_rx_stats routine before accessing it.
   8
   9 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
  10 Reviewed-by: Simon Horman <horms@kernel.org>
  11 Link: https://lore.kernel.org/r/b0d233386e059bccb59f18f69afb79a7806e5ded.1694507226.git.lorenzo@kernel.org
  12 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
  13 ---
  14
  15 --- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
  16 +++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
  17 @@ -68,6 +68,9 @@ mtk_wed_update_rx_stats(struct mtk_wed_d
  18         struct mtk_wed_wo_rx_stats *stats;
  19         int i;
  20
  21 +       if (!wed->wlan.update_wo_rx_stats)
  22 +               return;
  23 +
  24         if (count * sizeof(*stats) > skb->len - sizeof(u32))
  25                 return;
  26