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authorFlorian Fainelli <f.fainelli@gmail.com>2023-01-27 03:08:19 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-03-10 11:29:10 +0300
commit411317d2a4a7d6049d8efeef0d32ae43f8baefce (patch)
tree647d7142d21453cf13e1a9f7c1bd6bf0d5683196 /drivers/net/ethernet/broadcom/genet/bcmgenet.c
parentbe64d4b114f9ef90e4a37769e2eb0643097dcddd (diff)
downloadlinux-411317d2a4a7d6049d8efeef0d32ae43f8baefce.tar.xz
net: bcmgenet: Add a check for oversized packets
[ Upstream commit 5c0862c2c962052ed5055220a00ac1cefb92fbcd ] 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> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/broadcom/genet/bcmgenet.c')
-rw-r--r--drivers/net/ethernet/broadcom/genet/bcmgenet.c8
1 files changed, 8 insertions, 0 deletions
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");