linux-kernel - [PATCH] RDMA/rvt: Fix potential memory leak caused by rvt_alloc

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Date:   Fri, 12 Jun 2020 14:54:26 -0500
From:   Aditya Pakki <pakki001@....edu>
To:     pakki001@....edu
Cc:     kjlu@....edu, wu000273@....edu,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/rvt: Fix potential memory leak caused by rvt_alloc_rq

In case of failure of alloc_ud_wq_attr, the memory allocated by
rvt_alloc_rq() is not freed. The patch fixes this issue by
calling rvt_free_rq().

Signed-off-by: Aditya Pakki <pakki001@....edu>
---
 drivers/infiniband/sw/rdmavt/qp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index 511b72809e14..17ea7da73bf9 100644
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -1203,6 +1203,7 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
 			qp->s_flags = RVT_S_SIGNAL_REQ_WR;
 		err = alloc_ud_wq_attr(qp, rdi->dparms.node);
 		if (err) {
+			rvt_free_rq(&qp->r_rq);
 			ret = (ERR_PTR(err));
 			goto bail_driver_priv;
 		}
-- 
2.25.1