From patchwork Wed Apr 17 03:49:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: quic_zijuhu X-Patchwork-Id: 13632849 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82E7B10976 for ; Wed, 17 Apr 2024 03:50:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713325846; cv=none; b=IjXKrolYSqH9Y4sSYVsHRhReXVw3OGkGAoK77q8poE0hwggQ1ajFxRW64q1zxxnwXTjq39bYgffj7wIn26595L4eBt90tYtlZMTgrS/9tPGHLolmuLbLHlg+X41ypur7rKUJw4uavkCMKO5rShiLXQKuJlf+NdZEPUZCTdMqqwc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713325846; c=relaxed/simple; bh=oz4k/ArvhaAP3HSgrcBp+pEByepWCEEjHrlSXagnEqg=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=vC2X4SWo19Zg29fXoNh23iocg/uaG5UynXz7F2lNTDXB/sjSXflk3rswSDshrjLpdtU6kjifpLOacVW+x6I8jH7ENQGtmZhsmqWxmSxrXyJYWWgjz9TSsgDrMp2cI1fY/XveYoitK9MstlgrPfp1JeM+4QrkC4VFwD6mnAjO6Ew= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=Ze6XtZ0x; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="Ze6XtZ0x" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 43H2bAGh025243; Wed, 17 Apr 2024 03:50:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:mime-version:content-type; s= qcppdkim1; bh=eLyKDXz9FfO1FOa6Rhm2bCRPirWUmKUjM2DBp0TgkqI=; b=Ze 6XtZ0x12EqFkwjmcSmLrSO1YSy5nxV0Wd0fkn7k/jRwNFl5AIWaSAN5oWYVE1JXG zX1CUJsZ014Z8SbgXQRIqq6tmkVMxajdoJuIEgUhLYhhod1t9ctMGDILE9k0uRPY xHCn3YhUjRNKxZmqs+gFq3woN4vTwS1FqbUG8CopwqLP55KK5w5jFWwO5ytfT2hu AKsvH5SUdI1lB6k4AMmqrpl9XSVZdK3H3VQKs3FtlIK5wAbDC0c/M3XYf7gPOpJf LGrySQfavLpupCBQg1qhlOkTTHWC+lJu/QEhQ5Rarcvoick0uMd5aLE4S2mJaA+H 0sbzqKosN3P7BmU5SSvQ== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3xhqyytm0y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 17 Apr 2024 03:50:32 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 43H3oW4V017052 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 17 Apr 2024 03:50:32 GMT Received: from zijuhu-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 16 Apr 2024 20:50:30 -0700 From: Zijun Hu To: , CC: , , Subject: [PATCH] Bluetooth: qca: Fix nullptr dereference for non-serdev devices Date: Wed, 17 Apr 2024 11:49:52 +0800 Message-ID: <1713325792-17181-1-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 2IQPeO_XLTSd5Ub8LyhgPSq77MS6wJAb X-Proofpoint-ORIG-GUID: 2IQPeO_XLTSd5Ub8LyhgPSq77MS6wJAb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-17_03,2024-04-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=971 bulkscore=0 suspectscore=0 spamscore=0 mlxscore=0 clxscore=1011 adultscore=0 malwarescore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404170024 hu->serdev is nullptr and will cause nullptr dereference if qca_setup() is called by non-serdev device, fixed by null check before access. Fixes: 77f45cca8bc5 ("Bluetooth: qca: fix device-address endianness") Signed-off-by: Zijun Hu --- drivers/bluetooth/hci_qca.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 92fa20f5ac7d..9c6573c727e1 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1905,10 +1905,11 @@ static int qca_setup(struct hci_uart *hu) case QCA_WCN6750: case QCA_WCN6855: case QCA_WCN7850: - qcadev = serdev_device_get_drvdata(hu->serdev); - if (qcadev->bdaddr_property_broken) - set_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks); - + if (hu->serdev) { + qcadev = serdev_device_get_drvdata(hu->serdev); + if (qcadev->bdaddr_property_broken) + set_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks); + } hci_set_aosp_capable(hdev); ret = qca_read_soc_version(hdev, &ver, soc_type);