linux-kernel - [PATCH AUTOSEL 6.2 35/45] nvme-pci: fixing memory leak in probe teardown path

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Message-Id: <20230322195639.1995821-35-sashal@kernel.org>
Date:   Wed, 22 Mar 2023 15:56:29 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Irvin Cote <irvincoteg@...il.com>, Christoph Hellwig <hch@....de>,
        Sasha Levin <sashal@...nel.org>, kbusch@...nel.org,
        axboe@...com, sagi@...mberg.me, linux-nvme@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.2 35/45] nvme-pci: fixing memory leak in probe teardown path

From: Irvin Cote <irvincoteg@...il.com>

[ Upstream commit a61d265533b7fe0026a02a49916aa564ffe38e4c ]

In case the nvme_probe teardown path is triggered the ctrl ref count does
not reach 0 thus creating a memory leak upon failure of nvme_probe.

Signed-off-by: Irvin Cote <irvincoteg@...il.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/host/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c11e0cfeef0f3..0a77242794d64 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3126,6 +3126,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	nvme_dev_unmap(dev);
 out_uninit_ctrl:
 	nvme_uninit_ctrl(&dev->ctrl);
+	nvme_put_ctrl(&dev->ctrl);
 	return result;
 }
 
-- 
2.39.2