From 0dac45f0e5a5f55cf454e9e2ca86221539e63357 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 10 Nov 2015 20:23:53 -0200 Subject: [PATCH] [media] av7110: potential divide by zero "len" comes from dvb_video_ioctl() and there is a possibility that it is zero. We do a divide by len later in the function so that's not ok. Signed-off-by: Dan Carpenter Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ttpci/av7110_av.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/pci/ttpci/av7110_av.c b/drivers/media/pci/ttpci/av7110_av.c index ccb3b2c89ef8..1cf906047353 100644 --- a/drivers/media/pci/ttpci/av7110_av.c +++ b/drivers/media/pci/ttpci/av7110_av.c @@ -1045,6 +1045,9 @@ static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len dprintk(2, "av7110:%p, \n", av7110); + if (len == 0) + return 0; + if (!(av7110->playing & RP_VIDEO)) { if (av7110_av_start_play(av7110, RP_VIDEO) < 0) return -EBUSY; -- 2.20.1