From 6330f9cf347849de74899e5fac00bfecd84a6b43 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 7 Nov 2013 14:25:32 +0300 Subject: [PATCH] staging: nvec: potential NULL dereference on error path We assume nvec->rx can be NULL earlier so I have added a check here as well. Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/staging/nvec/nvec.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c index 3066ee2e753b..49ea76b3435d 100644 --- a/drivers/staging/nvec/nvec.c +++ b/drivers/staging/nvec/nvec.c @@ -681,7 +681,8 @@ static irqreturn_t nvec_interrupt(int irq, void *dev) dev_err(nvec->dev, "RX buffer overflow on %p: " "Trying to write byte %u of %u\n", - nvec->rx, nvec->rx->pos, NVEC_MSG_SIZE); + nvec->rx, nvec->rx ? nvec->rx->pos : 0, + NVEC_MSG_SIZE); break; default: nvec->state = 0; -- 2.30.2