linux-kernel - [PATCH 5.10 027/717] RDMA/rtrs-clt: Missing error from rtrs_rdma_conn

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Message-Id: <20201228125022.287534526@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:40:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Gioh Kim <gi-oh.kim@...ud.ionos.com>,
        Jack Wang <jinpu.wang@...ud.ionos.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 027/717] RDMA/rtrs-clt: Missing error from rtrs_rdma_conn_established

From: Gioh Kim <gi-oh.kim@...ud.ionos.com>

[ Upstream commit f553e7601df9566ba7644541fc09152a3a81f793 ]

When rtrs_rdma_conn_established returns error (non-zero value), the error
value is stored in con->cm_err and it cannot trigger
rtrs_rdma_error_recovery. Finally the error of rtrs_rdma_con_established
will be forgot.

Fixes: 6a98d71daea1 ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20201023074353.21946-5-jinpu.wang@cloud.ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@...ud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@...ud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 3cc957fea93ee..d54a77ebe1184 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1835,8 +1835,8 @@ static int rtrs_clt_rdma_cm_handler(struct rdma_cm_id *cm_id,
 		cm_err = rtrs_rdma_route_resolved(con);
 		break;
 	case RDMA_CM_EVENT_ESTABLISHED:
-		con->cm_err = rtrs_rdma_conn_established(con, ev);
-		if (likely(!con->cm_err)) {
+		cm_err = rtrs_rdma_conn_established(con, ev);
+		if (likely(!cm_err)) {
 			/*
 			 * Report success and wake up. Here we abuse state_wq,
 			 * i.e. wake up without state change, but we set cm_err.
-- 
2.27.0