[dpdk-dev] [PATCH v5 08/16] net/nfp: don't memcpy out of source range

[Andy Green]

/home/agreen/projects/dpdk/drivers/net/nfp/nfp_net.c:669:2:
error: ‘memcpy’ forming offset [5, 6] is out of the bounds
[0, 4] of object ‘tmp’ with type ‘uint32_t’ {aka ‘unsigned
int’} [-Werror=array-bounds]  memcpy(&hw->mac_addr[0],
&tmp, sizeof(struct ether_addr));

Signed-off-by: Andy Green <a...@warmcat.com>
Acked-by: Alejandro Lucero <alejandro.luc...@netronome.com>
Tested-by: Alejandro Lucero <alejandro.luc...@netronome.com>
Fixes: e6decee38209 ("net/nfp: use random MAC address if not configured")
Cc: sta...@dpdk.org
---
 drivers/net/nfp/nfp_net.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 78113b41b..f114b1839 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -666,7 +666,7 @@ nfp_net_vf_read_mac(struct nfp_net_hw *hw)
        uint32_t tmp;
 
        tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR));
-       memcpy(&hw->mac_addr[0], &tmp, sizeof(struct ether_addr));
+       memcpy(&hw->mac_addr[0], &tmp, 4);
 
        tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR + 4));
        memcpy(&hw->mac_addr[4], &tmp, 2);