From: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Date: Wed, 19 Jan 2022 04:28:09 -0500
Subject: IB/rdmavt: Validate remote_addr during loopback atomic tests
Patch-mainline: v5.17-rc3
Git-commit: 4028bccb003cf67e46632dee7f97ddc5d7b6e685
References: bsc#1114685 FATE#325854

The rdma-core test suite sends an unaligned remote address and expects a
failure.

ERROR: test_atomic_non_aligned_addr (tests.test_atomic.AtomicTest)

The qib/hfi1 rc handling validates properly, but the test has the client
and server on the same system.

The loopback of these operations is a distinct code path.

Fix by syntaxing the proposed remote address in the loopback code path.

Fixes: 15703461533a ("IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt")
Link: https://lore.kernel.org/r/1642584489-141005-1-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/sw/rdmavt/qp.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -2992,6 +2992,8 @@ do_write:
 	case IB_WR_ATOMIC_FETCH_AND_ADD:
 		if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
 			goto inv_err;
+		if (unlikely(wqe->atomic_wr.remote_addr & (sizeof(u64) - 1)))
+			goto inv_err;
 		if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
 					  wqe->atomic_wr.remote_addr,
 					  wqe->atomic_wr.rkey,