From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
IBTA declares QPN as 24bits, mask input to ensure that kernel
doesn't get higher bits.
Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
* Not fully tested yet, passed sanity tests for now.
---
drivers/infiniband/core/ucma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 0274e9b704be..57e68491a2fd 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1045,7 +1045,7 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id,
dst->retry_count = src->retry_count;
dst->rnr_retry_count = src->rnr_retry_count;
dst->srq = src->srq;
- dst->qp_num = src->qp_num;
+ dst->qp_num = src->qp_num & 0xFFFFFF;
dst->qkey = (id->route.addr.src_addr.ss_family == AF_IB) ? src->qkey : 0;
}
--
2.20.1
