diff options
| author | Felix Fietkau | 2025-09-12 12:39:48 +0000 |
|---|---|---|
| committer | Felix Fietkau | 2025-09-12 12:41:59 +0000 |
| commit | 05e6fe692b32f05529ac12dea3689e59ae69a0d0 (patch) | |
| tree | c3313a0df589bd83a6e65e2a0eba9bb39b8721ef | |
| parent | c60b94a1954eb4a190f02cf29b654f58a560c495 (diff) | |
| download | openwrt-05e6fe692b32f05529ac12dea3689e59ae69a0d0.tar.gz | |
kernel: mtk_eth_soc: zero-initialize PPE flow tables
Prevents invalid flow table data from leaking across reboots
Fixes: https://github.com/openwrt/openwrt/issues/19895
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit 36d0690993ba90321fd0c004e5f3c66ac10966ee)
| -rw-r--r-- | target/linux/generic/pending-6.6/736-05-net-ethernet-mtk_eth_soc-zero-initialize-PPE-flow-ta.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/generic/pending-6.6/736-05-net-ethernet-mtk_eth_soc-zero-initialize-PPE-flow-ta.patch b/target/linux/generic/pending-6.6/736-05-net-ethernet-mtk_eth_soc-zero-initialize-PPE-flow-ta.patch new file mode 100644 index 0000000000..2ca5ace367 --- /dev/null +++ b/target/linux/generic/pending-6.6/736-05-net-ethernet-mtk_eth_soc-zero-initialize-PPE-flow-ta.patch @@ -0,0 +1,27 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 12 Sep 2025 14:18:14 +0200 +Subject: [PATCH] net: ethernet: mtk_eth_soc: zero initialize PPE flow table + +Avoid picking up flows from last boot or other invalid data + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/net/ethernet/mediatek/mtk_ppe.c ++++ b/drivers/net/ethernet/mediatek/mtk_ppe.c +@@ -914,6 +914,7 @@ struct mtk_ppe *mtk_ppe_init(struct mtk_ + if (!foe) + goto err_free_l2_flows; + ++ memset(foe, 0, MTK_PPE_ENTRIES * soc->foe_entry_size); + ppe->foe_table = foe; + + foe_flow_size = (MTK_PPE_ENTRIES / soc->hash_offset) * +@@ -928,6 +929,7 @@ struct mtk_ppe *mtk_ppe_init(struct mtk_ + if (!mib) + return NULL; + ++ memset(mib, 0, MTK_PPE_ENTRIES * sizeof(*mib)); + ppe->mib_table = mib; + + acct = devm_kzalloc(dev, MTK_PPE_ENTRIES * sizeof(*acct), |