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Subject[PATCH 4.1 026/267] staging: vt6655: device_rx_srv check sk_buff is NULL
Date
4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Malcolm Priestley <tvboxspy@gmail.com>

commit b5eeed8cb6097c8ea660b6598d36fdbb94065a22 upstream.

There is a small chance that pRD->pRDInfo->skb could go NULL
while the interrupt is processing.

Put NULL check on loop to break out.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/staging/vt6655/device_main.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -807,6 +807,10 @@ static int device_rx_srv(struct vnt_priv
pRD = pRD->next) {
if (works++ > 15)
break;
+
+ if (!pRD->pRDInfo->skb)
+ break;
+
if (vnt_receive_frame(pDevice, pRD)) {
if (!device_alloc_rx_buf(pDevice, pRD)) {
dev_err(&pDevice->pcid->dev,



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