RDMA: Directly cast the sockaddr union to sockaddr
gcc 9 now does allocation size tracking and thinks that passing the member
of a union and then accessing beyond that member's bounds is an overflow.
Instead of using the union member, use the entire union with a cast to
get to the sockaddr. gcc will now know that the memory extends the full
size of the union.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index 32674b2..5127e2e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -2499,7 +2499,6 @@ static int ocrdma_set_av_params(struct ocrdma_qp *qp,
u16 vlan_id = 0xFFFF;
u8 mac_addr[6], hdr_type;
union {
- struct sockaddr _sockaddr;
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
} sgid_addr, dgid_addr;
@@ -2542,8 +2541,8 @@ static int ocrdma_set_av_params(struct ocrdma_qp *qp,
hdr_type = rdma_gid_attr_network_type(sgid_attr);
if (hdr_type == RDMA_NETWORK_IPV4) {
- rdma_gid2ip(&sgid_addr._sockaddr, &sgid_attr->gid);
- rdma_gid2ip(&dgid_addr._sockaddr, &grh->dgid);
+ rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid);
+ rdma_gid2ip((struct sockaddr *)&dgid_addr, &grh->dgid);
memcpy(&cmd->params.dgid[0],
&dgid_addr._sockaddr_in.sin_addr.s_addr, 4);
memcpy(&cmd->params.sgid[0],