On 05/08, alvinx.zh...@intel.com wrote:
>From: Alvin Zhang <alvinx.zh...@intel.com>
>
>Fix some out-of-bounds memory issues, they may lead to wrong results
>or affect application stability.
>
>Coverity issue: 357759, 357713
>Fixes: bd3fcf0d0fa1 (net/igc: support RSS)
>Cc: sta...@dpdk.org
>
>Signed-off-by: Alvin Zhang <alvinx.zh...@intel.com>
>---
>
>V2: update git log
>V3: update git log
>
> drivers/net/igc/igc_ethdev.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
>index 16d98c6..6ab3ee9 100644
>--- a/drivers/net/igc/igc_ethdev.c
>+++ b/drivers/net/igc/igc_ethdev.c
>@@ -2266,6 +2266,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
> return -EINVAL;
> }
>
>+ RTE_BUILD_BUG_ON(ETH_RSS_RETA_SIZE_128 % IGC_RSS_RDT_REG_SIZE);
>+
> /* set redirection table */
> for (i = 0; i < ETH_RSS_RETA_SIZE_128; i += IGC_RSS_RDT_REG_SIZE) {
> union igc_rss_reta_reg reta, reg;
>@@ -2278,7 +2280,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
> IGC_RSS_RDT_REG_SIZE_MASK);
>
> /* if no need to update the register */
>- if (!mask)
>+ if (!mask ||
>+ shift > (RTE_RETA_GROUP_SIZE - IGC_RSS_RDT_REG_SIZE))
> continue;
>
> /* check mask whether need to read the register value first */
>@@ -2289,6 +2292,7 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
> IGC_RETA(i / IGC_RSS_RDT_REG_SIZE));
>
> /* update the register */
>+ RTE_BUILD_BUG_ON(sizeof(reta.bytes) != IGC_RSS_RDT_REG_SIZE);
> for (j = 0; j < IGC_RSS_RDT_REG_SIZE; j++) {
> if (mask & (1u << j))
> reta.bytes[j] =
>@@ -2318,6 +2322,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
> return -EINVAL;
> }
>
>+ RTE_BUILD_BUG_ON(ETH_RSS_RETA_SIZE_128 % IGC_RSS_RDT_REG_SIZE);
>+
> /* read redirection table */
> for (i = 0; i < ETH_RSS_RETA_SIZE_128; i += IGC_RSS_RDT_REG_SIZE) {
> union igc_rss_reta_reg reta;
>@@ -2330,10 +2336,12 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev
>*dev,
> IGC_RSS_RDT_REG_SIZE_MASK);
>
> /* if no need to read register */
>- if (!mask)
>+ if (!mask ||
>+ shift > (RTE_RETA_GROUP_SIZE - IGC_RSS_RDT_REG_SIZE))
> continue;
>
> /* read register and get the queue index */
>+ RTE_BUILD_BUG_ON(sizeof(reta.bytes) != IGC_RSS_RDT_REG_SIZE);
> reta.dword = IGC_READ_REG_LE_VALUE(hw,
> IGC_RETA(i / IGC_RSS_RDT_REG_SIZE));
> for (j = 0; j < IGC_RSS_RDT_REG_SIZE; j++) {
>--
>1.8.3.1
>
Applied to dpdk-next-net-intel, Thanks.
