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[PATCH] media: dvb-usb: fix ununit-value in az6027_rc_query

From: Pavel Skripkin <hidden>
Date: 2021-08-13 14:34:31
Also in: lkml
Subsystem: media input infrastructure (v4l/dvb), the rest · Maintainers: Mauro Carvalho Chehab, Linus Torvalds

Syzbot reported ununit-value bug in az6027_rc_query(). The problem was
in missing state pointer initialization. Since this funtion does nothing
we can simply initialize state to REMOTE_NO_KEY_PRESSED.

Fixes: 76f9a820c867 ("V4L/DVB: AZ6027: Initial import of the driver")
Reported-and-tested-by: syzbot+2cd8c5db4a85f0a04142@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <redacted>
---
 drivers/media/usb/dvb-usb/az6027.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/media/usb/dvb-usb/az6027.c b/drivers/media/usb/dvb-usb/az6027.c
index 1c39b61cde29..86788771175b 100644
--- a/drivers/media/usb/dvb-usb/az6027.c
+++ b/drivers/media/usb/dvb-usb/az6027.c
@@ -391,6 +391,7 @@ static struct rc_map_table rc_map_az6027_table[] = {
 /* remote control stuff (does not work with my box) */
 static int az6027_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
+	*state = REMOTE_NO_KEY_PRESSED;
 	return 0;
 }
 
-- 
2.32.0
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