diff options
| author |   Yufeng Mo <moyufeng@huawei.com> | 2021-12-10 21:09:34 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-12-12 16:20:50 +0000 |
| commit | 6dde452bceca3f2ed2b33bc46a16ff5682a03a2e (patch) | |
| tree | 16215f2ff55af1577640dc72fbc103b3bc1829b3 /drivers/net/ethernet/hisilicon/hns3/hnae3.h | |
| parent | net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg (diff) | |
| download | linux-dev-6dde452bceca3f2ed2b33bc46a16ff5682a03a2e.tar.xz linux-dev-6dde452bceca3f2ed2b33bc46a16ff5682a03a2e.zip | |
net: hns3: fix race condition in debugfs
When multiple threads concurrently access the debugfs content, data
and pointer exceptions may occur. Therefore, mutex lock protection is
added for debugfs.
Fixes: 5e69ea7ee2a6 ("net: hns3: refactor the debugfs process")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns3/hnae3.h')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hnae3.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h index 3f7a9a4c59d5..63f5abcc6bf4 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h @@ -839,6 +839,8 @@ struct hnae3_handle { u8 netdev_flags; struct dentry *hnae3_dbgfs; + /* protects concurrent contention between debugfs commands */ + struct mutex dbgfs_lock; /* Network interface message level enabled bits */ u32 msg_enable; |