diff mbox series

[net-next,03/12] net: hns3: check cmdq message parameters sent from VF

Message ID 1612784382-27262-4-git-send-email-tanhuazhong@huawei.com
State New
Headers show
Series net: hns3: some cleanups for -next | expand

Commit Message

Huazhong Tan Feb. 8, 2021, 11:39 a.m. UTC 
From: Yufeng Mo <moyufeng@huawei.com>

The parameters sent from VF may be unreliable. If these
parameters are used directly, memory overwriting may occur.
Therefore, we need to check parameters before using.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c    |  7 ++++++
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 29 +++++++++++++++++++---
 2 files changed, 32 insertions(+), 4 deletions(-)

Comments

Huazhong Tan Feb. 9, 2021, 1:26 a.m. UTC | #1 
On 2021/2/9 5:34, Jakub Kicinski wrote:
> On Mon, 8 Feb 2021 19:39:33 +0800 Huazhong Tan wrote:

>> From: Yufeng Mo <moyufeng@huawei.com>

>>

>> The parameters sent from VF may be unreliable. If these

>> parameters are used directly, memory overwriting may occur.

>> Therefore, we need to check parameters before using.

>>

>> Signed-off-by: Yufeng Mo <moyufeng@huawei.com>

>> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>

> Are you sure this is not a fix which should target net and stable?



Yes, this patch should be a fix for below:

Fixes: 1a426f8b40fc ("net: hns3: fix the VF queue reset flow error")
Fixes: 84e095d64ed9 ("net: hns3: Change PF to add ring-vect binding & 
resetQ to mailbox")
Fixes: a638b1d8cc87 ("net: hns3: fix get VF RSS issue")


>

> Other than that the patches look good to me.



Could you apply other patches into -next? and i resend this one for the net.

Or I send a V2 without this patch?


>

> .
diff mbox series

Patch

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index f5a9884..037df35 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -9830,12 +9830,19 @@  int hclge_reset_tqp(struct hnae3_handle *handle, u16 queue_id)
 
 void hclge_reset_vf_queue(struct hclge_vport *vport, u16 queue_id)
 {
+	struct hnae3_handle *handle = &vport->nic;
 	struct hclge_dev *hdev = vport->back;
 	int reset_try_times = 0;
 	int reset_status;
 	u16 queue_gid;
 	int ret;
 
+	if (queue_id >= handle->kinfo.num_tqps) {
+		dev_warn(&hdev->pdev->dev, "Invalid vf queue id(%u)\n",
+			 queue_id);
+		return;
+	}
+
 	queue_gid = hclge_covert_handle_qid_global(&vport->nic, queue_id);
 
 	ret = hclge_send_reset_tqp_cmd(hdev, queue_gid, true);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 754c09a..ffb416e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -158,21 +158,31 @@  static int hclge_get_ring_chain_from_mbx(
 			struct hclge_vport *vport)
 {
 	struct hnae3_ring_chain_node *cur_chain, *new_chain;
+	struct hclge_dev *hdev = vport->back;
 	int ring_num;
-	int i = 0;
+	int i;
 
 	ring_num = req->msg.ring_num;
 
 	if (ring_num > HCLGE_MBX_MAX_RING_CHAIN_PARAM_NUM)
 		return -ENOMEM;
 
+	for (i = 0; i < ring_num; i++) {
+		if (req->msg.param[i].tqp_index >= vport->nic.kinfo.rss_size) {
+			dev_err(&hdev->pdev->dev, "tqp index(%u) is out of range(0-%u)\n",
+				req->msg.param[i].tqp_index,
+				vport->nic.kinfo.rss_size - 1);
+			return -EINVAL;
+		}
+	}
+
 	hnae3_set_bit(ring_chain->flag, HNAE3_RING_TYPE_B,
-		      req->msg.param[i].ring_type);
+		      req->msg.param[0].ring_type);
 	ring_chain->tqp_index =
 		hclge_get_queue_id(vport->nic.kinfo.tqp
-				   [req->msg.param[i].tqp_index]);
+				   [req->msg.param[0].tqp_index]);
 	hnae3_set_field(ring_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
-			HNAE3_RING_GL_IDX_S, req->msg.param[i].int_gl_index);
+			HNAE3_RING_GL_IDX_S, req->msg.param[0].int_gl_index);
 
 	cur_chain = ring_chain;
 
@@ -597,6 +607,17 @@  static void hclge_get_rss_key(struct hclge_vport *vport,
 
 	index = mbx_req->msg.data[0];
 
+	/* Check the query index of rss_hash_key from VF, make sure no
+	 * more than the size of rss_hash_key.
+	 */
+	if (((index + 1) * HCLGE_RSS_MBX_RESP_LEN) >
+	      sizeof(vport[0].rss_hash_key)) {
+		dev_warn(&hdev->pdev->dev,
+			 "failed to get the rss hash key, the index(%u) invalid !\n",
+			 index);
+		return;
+	}
+
 	memcpy(resp_msg->data,
 	       &hdev->vport[0].rss_hash_key[index * HCLGE_RSS_MBX_RESP_LEN],
 	       HCLGE_RSS_MBX_RESP_LEN);