diff options
Diffstat (limited to 'target/linux/generic/patches-4.0/072-08-bgmac-add-check-for-oversized-packets.patch')
| -rw-r--r-- | target/linux/generic/patches-4.0/072-08-bgmac-add-check-for-oversized-packets.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.0/072-08-bgmac-add-check-for-oversized-packets.patch b/target/linux/generic/patches-4.0/072-08-bgmac-add-check-for-oversized-packets.patch new file mode 100644 index 0000000..705aa2d --- /dev/null +++ b/target/linux/generic/patches-4.0/072-08-bgmac-add-check-for-oversized-packets.patch @@ -0,0 +1,27 @@ +From: Felix Fietkau <nbd@openwrt.org> +Date: Sun, 12 Apr 2015 22:28:20 +0200 +Subject: [PATCH] bgmac: add check for oversized packets + +In very rare cases, the MAC can catch an internal buffer that is bigger +than it's supposed to be. Instead of crashing the kernel, simply pass +the buffer back to the hardware + +Signed-off-by: Felix Fietkau <nbd@openwrt.org> +--- + +--- a/drivers/net/ethernet/broadcom/bgmac.c ++++ b/drivers/net/ethernet/broadcom/bgmac.c +@@ -445,6 +445,13 @@ static int bgmac_dma_rx_read(struct bgma + break; + } + ++ if (len > BGMAC_RX_ALLOC_SIZE) { ++ bgmac_err(bgmac, "Found oversized packet at slot %d, DMA issue!\n", ++ ring->start); ++ put_page(virt_to_head_page(buf)); ++ break; ++ } ++ + /* Omit CRC. */ + len -= ETH_FCS_LEN; + |