From: Pavel Skripkin <paskripkin@gmail.com> stable inclusion from stable-5.10.80 commit e2f3608a0b5075774a422bf56745f56fc90a0f28 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit afae4ef7d5ad913cab1316137854a36bea6268a5 ] Syzbot reported ununit-value bug in az6027_rc_query(). The problem was in missing state pointer initialization. Since this function does nothing we can simply initialize state to REMOTE_NO_KEY_PRESSED. Reported-and-tested-by: syzbot+2cd8c5db4a85f0a04142@syzkaller.appspotmail.com Fixes: 76f9a820c867 ("V4L/DVB: AZ6027: Initial import of the driver") Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Reviewed-by: Weilong Chen <chenweilong@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- 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; } -- 2.20.1