From 1f068588efddf0175e954ffc07ec8478bddd52c7 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 18 Aug 2017 18:11:52 +0200 Subject: mediatek: update to latest kernel patchset from v4.13-rc Signed-off-by: Muciri Gatimu Signed-off-by: Shashidhar Lakkavalli Signed-off-by: John Crispin --- ...t-mediatek-avoid-potential-invalid-memory.patch | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 target/linux/mediatek/patches-4.9/0055-net-ethernet-mediatek-avoid-potential-invalid-memory.patch (limited to 'target/linux/mediatek/patches-4.9/0055-net-ethernet-mediatek-avoid-potential-invalid-memory.patch') diff --git a/target/linux/mediatek/patches-4.9/0055-net-ethernet-mediatek-avoid-potential-invalid-memory.patch b/target/linux/mediatek/patches-4.9/0055-net-ethernet-mediatek-avoid-potential-invalid-memory.patch new file mode 100644 index 0000000..6598e82 --- /dev/null +++ b/target/linux/mediatek/patches-4.9/0055-net-ethernet-mediatek-avoid-potential-invalid-memory.patch @@ -0,0 +1,31 @@ +From a3360b3543b9fb833ba691019e396e72293a313f Mon Sep 17 00:00:00 2001 +From: John Crispin +Date: Thu, 10 Aug 2017 16:31:45 +0200 +Subject: [PATCH 55/57] net: ethernet: mediatek: avoid potential invalid memory + access + +Potential dangerous invalid memory might be accessed if invalid mac value +reflected from the forward port field in rxd4 caused by possible potential +hardware defects. So added a simple sanity checker to avoid the kind of +situation happening. + +Signed-off-by: Sean Wang +Acked-by: John Crispin +Signed-off-by: David S. Miller +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -964,6 +964,10 @@ static int mtk_poll_rx(struct napi_struc + mac--; + } + ++ if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || ++ !eth->netdev[mac])) ++ goto release_desc; ++ + netdev = eth->netdev[mac]; + + if (unlikely(test_bit(MTK_RESETTING, ð->state))) -- cgit v1.1