Messages in this thread Patch in this message | | | From | Florian Fainelli <> | Subject | [PATCH net-next] net: bcmgenet: Add a check for oversized packets | Date | Thu, 26 Jan 2023 16:08:19 -0800 |
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Occasionnaly we may get oversized packets from the hardware which exceed the nomimal 2KiB buffer size we allocate SKBs with. Add an early check which drops the packet to avoid invoking skb_over_panic() and move on to processing the next packet.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 21973046b12b..d937daa8ee88 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -2316,6 +2316,14 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring, __func__, p_index, ring->c_index, ring->read_ptr, dma_length_status); + if (unlikely(len > RX_BUF_LENGTH)) { + netif_err(priv, rx_status, dev, "oversized packet\n"); + dev->stats.rx_length_errors++; + dev->stats.rx_errors++; + dev_kfree_skb_any(skb); + goto next; + } + if (unlikely(!(dma_flag & DMA_EOP) || !(dma_flag & DMA_SOP))) { netif_err(priv, rx_status, dev, "dropping fragmented packet!\n"); -- 2.25.1
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