linux-kernel - [PATCH] scsi: qla2xxx: fix memory leak if qlt_add

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Message-Id: <20200809221154.12798-1-navid.emamdoost@gmail.com>
Date:   Sun,  9 Aug 2020 17:11:53 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     Nilesh Javali <njavali@...vell.com>,
        GR-QLogic-Storage-Upstream@...vell.com,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     emamd001@....edu, Navid Emamdoost <navid.emamdoost@...il.com>
Subject: [PATCH] scsi: qla2xxx: fix memory leak if qlt_add_target fails

In the implementation of qla2x00_probe_one() the allocated and
initialized ha is leaked if it fails to add target via qlt_add_target().
Go to error handling path if qlt_add_target() fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
 drivers/scsi/qla2xxx/qla_os.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index e92fad99338c..81a58ae54909 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3457,7 +3457,9 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	    base_vha->host_no,
 	    ha->isp_ops->fw_version_str(base_vha, fw_str, sizeof(fw_str)));
 
-	qlt_add_target(ha, base_vha);
+	ret = qlt_add_target(ha, base_vha);
+	if (ret)
+		goto probe_failed;
 
 	clear_bit(PFLG_DRIVER_PROBING, &base_vha->pci_flags);
 
-- 
2.17.1