[PATCH AUTOSEL 5.2 065/249] net: hns3: set ops to null when unregister ad_dev
From: Sasha Levin <sashal@kernel.org>
Date: 2019-07-15 15:13:13
Also in:
lkml, stable
Subsystem:
hisilicon network subsystem 3 driver (hns3), hisilicon network subsystem driver, networking drivers, the rest · Maintainers:
Jian Shen, Jijie Shao, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Weihang Li <redacted>
[ Upstream commit 594a81b39525f0a17e92c2e0b167ae1400650380 ]
The hclge/hclgevf and hns3 module can be unloaded independently,
when hclge/hclgevf unloaded firstly, the ops of ae_dev should
be set to NULL, otherwise it will cause an use-after-free problem.
Fixes: 38caee9d3ee8 ("net: hns3: Add support of the HNAE3 framework")
Signed-off-by: Weihang Li <redacted>
Signed-off-by: Peng Li <redacted>
Signed-off-by: Huazhong Tan <redacted>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/hisilicon/hns3/hnae3.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
index fa8b8506b120..738e01393b68 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.c@@ -251,6 +251,7 @@ void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo) ae_algo->ops->uninit_ae_dev(ae_dev); hnae3_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0); + ae_dev->ops = NULL; } list_del(&ae_algo->node);
@@ -351,6 +352,7 @@ void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev) ae_algo->ops->uninit_ae_dev(ae_dev); hnae3_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0); + ae_dev->ops = NULL; } list_del(&ae_dev->node);
--
2.20.1