On Mon, 2018-02-26 at 14:12 -0700, Shuah Khan wrote:

Upstream commit 10c901209306 ("usbip: stub_rx: fix static checker warning on unnecessary checks")

Back-port fix for static checker warning on unnecessary checks

smatch warnings: drivers/staging/usbip/stub_rx.c:360 get_pipe() warn: impossible condition '(pdu->u.cmd_submit.transfer_buffer_length > ((~0 >> 1))) => (s32min-s32max > s32max)' drivers/staging/usbip/stub_rx.c:501 stub_recv_cmd_submit() warn: always true condition '(pdu->u.cmd_submit.transfer_buffer_length <= ((~0 >> 1))) => (s32min-s32max <= s32max)'

I've finally queued this up, thanks.

Ben.

Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Shuah Khan shuahkh@osg.samsung.com

---

drivers/staging/usbip/stub_rx.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c index 35f59747122a..d8544ab9577b 100644 --- a/drivers/staging/usbip/stub_rx.c +++ b/drivers/staging/usbip/stub_rx.c @@ -356,14 +356,6 @@ static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu) epd = &ep->desc;

• /* validate transfer_buffer_length */
• if (pdu->u.cmd_submit.transfer_buffer_length > INT_MAX) {

• dev_err(&sdev->udev->dev,
  

• 	"CMD_SUBMIT: -EMSGSIZE transfer_buffer_length %d\n",
  

• 	pdu->u.cmd_submit.transfer_buffer_length);
  

• return -1;
  

• }
• if (usb_endpoint_xfer_control(epd)) { if (dir == USBIP_DIR_OUT) return usb_sndctrlpipe(udev, epnum);

@@ -497,8 +489,7 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, } /* allocate urb transfer buffer, if needed */

• if (pdu->u.cmd_submit.transfer_buffer_length > 0 &&

•    pdu->u.cmd_submit.transfer_buffer_length <= INT_MAX) {
  

• if (pdu->u.cmd_submit.transfer_buffer_length > 0) { priv->urb->transfer_buffer = kzalloc(pdu->u.cmd_submit.transfer_buffer_length, GFP_KERNEL);