Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70799C433F5 for ; Wed, 24 Nov 2021 13:01:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344834AbhKXNEQ (ORCPT ); Wed, 24 Nov 2021 08:04:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:38602 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345894AbhKXNCO (ORCPT ); Wed, 24 Nov 2021 08:02:14 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 89DD661179; Wed, 24 Nov 2021 12:35:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757327; bh=tbKFZ9hmkTXpIXUhsnfpIvlXr/0eN8S+OJ2MV5wrPnY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k7N1wnUzfNTwxtKsLUnJNmH4/PMUyI64QKzvkJCoUWQnso4ZDQ2mQJHReNUB91pUK g0tfvBdo1B/bwuI/nneYJwKRlDI6ngGQFOFkw6uhhPBMTvQRo2jpYmK90VbOcbcDol Qer6fG095iGghiGQNlcliUhnYCTA7WSYdES/D51U= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pavel Skripkin , Sean Young , Mauro Carvalho Chehab , Sasha Levin , syzbot+2cd8c5db4a85f0a04142@syzkaller.appspotmail.com Subject: [PATCH 4.19 132/323] media: dvb-usb: fix ununit-value in az6027_rc_query Date: Wed, 24 Nov 2021 12:55:22 +0100 Message-Id: <20211124115723.390297168@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pavel Skripkin [ 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 Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- 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 6321b8e302612..990719727dc37 100644 --- a/drivers/media/usb/dvb-usb/az6027.c +++ b/drivers/media/usb/dvb-usb/az6027.c @@ -394,6 +394,7 @@ 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; } -- 2.33.0