From: Weihang Li Date: Mon, 3 Jun 2019 02:09:18 +0000 (+0800) Subject: net: hns3: set ops to null when unregister ad_dev X-Git-Tag: v5.4-rc1~616^2~346^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=594a81b39525f0a17e92c2e0b167ae1400650380;p=platform%2Fkernel%2Flinux-rpi.git net: hns3: set ops to null when unregister ad_dev 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 Signed-off-by: Peng Li Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller --- 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);