linux-kernel - [PATCH AUTOSEL 4.19 06/21] scsi: hpsa: Fix memory leak in hpsa_init

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Message-Id: <20201110035541.424648-6-sashal@kernel.org>
Date:   Mon,  9 Nov 2020 22:55:26 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>,
        Don Brace <don.brace@...rochip.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>, storagedev@...rochip.com,
        linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 06/21] scsi: hpsa: Fix memory leak in hpsa_init_one()

From: Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>

[ Upstream commit af61bc1e33d2c0ec22612b46050f5b58ac56a962 ]

When hpsa_scsi_add_host() fails, h->lastlogicals is leaked since it is
missing a free() in the error handler.

Fix this by adding free() when hpsa_scsi_add_host() fails.

Link: https://lore.kernel.org/r/20201027073125.14229-1-keitasuzuki.park@sslab.ics.keio.ac.jp
Tested-by: Don Brace <don.brace@...rochip.com>
Acked-by: Don Brace <don.brace@...rochip.com>
Signed-off-by: Keita Suzuki <keitasuzuki.park@...ab.ics.keio.ac.jp>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/hpsa.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 11de2198bb87d..0fe21cbdf0ca7 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -8781,7 +8781,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* hook into SCSI subsystem */
 	rc = hpsa_scsi_add_host(h);
 	if (rc)
-		goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
+		goto clean8; /* lastlogicals, perf, sg, cmd, irq, shost, pci, lu, aer/h */
 
 	/* Monitor the controller for firmware lockups */
 	h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
@@ -8796,6 +8796,8 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 				HPSA_EVENT_MONITOR_INTERVAL);
 	return 0;
 
+clean8: /* lastlogicals, perf, sg, cmd, irq, shost, pci, lu, aer/h */
+	kfree(h->lastlogicals);
 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
 	hpsa_free_performant_mode(h);
 	h->access.set_intr_mask(h, HPSA_INTR_OFF);
-- 
2.27.0