| Message ID | tencent_A037749680365C4BCC750776D566183C4509@qq.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [V4,1/2] wifi: ath6kl: Replace ath6kl_usb_submit_ctrl_in with usb_control_msg_recv | expand |
On Mon, Aug 26, 2024 at 08:29:56PM +0800, Edward Adam Davis wrote: > ath6kl_usb_submit_ctrl_in() did not take into account the situation where > the length of the data read from the device is not equal to the len, and > such missing judgments will result in subsequent code using incorrect data. > > usb_control_msg_recv() handles the abnormal length of the returned data, > so using it directly can fix this warning. what warning?
diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c index 5220809841a6..0458b5a078e1 100644 --- a/drivers/net/wireless/ath/ath6kl/usb.c +++ b/drivers/net/wireless/ath/ath6kl/usb.c @@ -1027,9 +1027,10 @@ static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len) int ret; /* get response */ - ret = ath6kl_usb_submit_ctrl_in(ar_usb, - ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP, - 0, 0, buf, len); + ret = usb_control_msg_recv(ar_usb->udev, 0, + ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, 0, buf, len, 2000, GFP_KERNEL); if (ret) { ath6kl_err("Unable to read the bmi data from the device: %d\n", ret);
ath6kl_usb_submit_ctrl_in() did not take into account the situation where the length of the data read from the device is not equal to the len, and such missing judgments will result in subsequent code using incorrect data. usb_control_msg_recv() handles the abnormal length of the returned data, so using it directly can fix this warning. Reported-by: syzbot+92c6dd14aaa230be6855@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis <eadavis@qq.com> --- V4: Adjust indentation style drivers/net/wireless/ath/ath6kl/usb.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)