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From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Christian Benvenuti <benve@cisco.com>,
	Nelson Escobar <neescoba@cisco.com>,
	Doug Ledford <dledford@redhat.com>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] RDMA/usnic: Fix memleak in find_free_vf_and_create_qp_grp
Date: Sat, 26 Dec 2020 15:42:48 +0800
Message-ID: <20201226074248.2893-1-dinghao.liu@zju.edu.cn> (raw)

If usnic_ib_qp_grp_create() fails at the first call, dev_list
will not be freed on error, which leads to memleak.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
 drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index 38a37770c016..3705c6b8b223 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -214,6 +214,7 @@ find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev,
 
 		}
 		usnic_uiom_free_dev_list(dev_list);
+		dev_list = NULL;
 	}
 
 	/* Try to find resources on an unused vf */
@@ -239,6 +240,8 @@ find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev,
 qp_grp_check:
 	if (IS_ERR_OR_NULL(qp_grp)) {
 		usnic_err("Failed to allocate qp_grp\n");
+		if (usnic_ib_share_vf)
+			usnic_uiom_free_dev_list(dev_list);
 		return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM);
 	}
 	return qp_grp;
-- 
2.17.1


             reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-26  7:42 Dinghao Liu [this message]
2020-12-27  7:24 ` Leon Romanovsky
2021-01-07 20:41 ` Jason Gunthorpe

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