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Subject[PATCH V2 net-next 06/10] net: hns3: set ops to null when unregister ad_dev
Date
From: Weihang Li <liweihang@hisilicon.com>

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 <liweihang@hisilicon.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
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 fa8b850..738e013 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);
--
2.7.4
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