| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 067/251] staging: vt6655: device_rx_srv check sk_buff is NULL | Date | Wed, 15 Jul 2015 18:06:28 -0700 |
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3.19.8-ckt4 -stable review patch. If anyone has any objections, please let me know.
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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> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/staging/vt6655/device_main.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c index b95e915..fea0214 100644 --- a/drivers/staging/vt6655/device_main.c +++ b/drivers/staging/vt6655/device_main.c @@ -851,6 +851,10 @@ static int device_rx_srv(struct vnt_private *pDevice, unsigned int uIdx) 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, -- 1.9.1
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