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Date: Fri, 11 Nov 2022 15:09:23 +0800
From: Ziyang Xuan <william.xuanziyang@...wei.com>
To: <vburru@...vell.com>, <aayarekar@...vell.com>,
<sburla@...vell.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
<kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH net 3/4] octeon_ep: fix potential memory leak in octep_device_setup()
When occur unsupported_dev and mbox init errors, it did not free oct->conf
and iounmap() oct->mmio[i].hw_addr. That would trigger memory leak problem.
Add kfree() for oct->conf and iounmap() for oct->mmio[i].hw_addr under
unsupported_dev and mbox init errors to fix the problem.
Fixes: 862cd659a6fb ("octeon_ep: Add driver framework and device initialization")
Signed-off-by: Ziyang Xuan <william.xuanziyang@...wei.com>
---
drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index 546bcebf4462..53f288c32238 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -956,7 +956,7 @@ int octep_device_setup(struct octep_device *oct)
ret = octep_ctrl_mbox_init(ctrl_mbox);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize control mbox\n");
- return -1;
+ goto unsupported_dev;
}
oct->ctrl_mbox_ifstats_offset = OCTEP_CTRL_MBOX_SZ(ctrl_mbox->h2fq.elem_sz,
ctrl_mbox->h2fq.elem_cnt,
@@ -966,6 +966,10 @@ int octep_device_setup(struct octep_device *oct)
return 0;
unsupported_dev:
+ for (i = 0; i < OCTEP_MMIO_REGIONS; i++)
+ iounmap(oct->mmio[i].hw_addr);
+
+ kfree(oct->conf);
return -1;
}
--
2.25.1
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