From: Hans Wippel <hwippel@xxxxxxxxxxxxxxxxxx>
In the infiniband part, SMC currently uses get_netdev which calls
dev_hold on the returned net device. However, the SMC code never calls
dev_put on that net device resulting in a wrong reference count.
This patch adds a dev_put after the usage of the net device to fix the
issue.
Signed-off-by: Hans Wippel <hwippel@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Ursula Braun <ubraun@xxxxxxxxxxxxxxxxxx>
---
net/smc/smc_ib.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index 547e0e113b17..0b5852299158 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -380,6 +380,7 @@ static int smc_ib_fill_gid_and_mac(struct smc_ib_device *smcibdev, u8 ibport)
ndev = smcibdev->ibdev->get_netdev(smcibdev->ibdev, ibport);
if (ndev) {
memcpy(&smcibdev->mac, ndev->dev_addr, ETH_ALEN);
+ dev_put(ndev);
} else if (!rc) {
memcpy(&smcibdev->mac[ibport - 1][0],
&smcibdev->gid[ibport - 1].raw[8], 3);
--
2.13.5
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