From patchwork Thu Apr 18 03:11:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: quic_zijuhu X-Patchwork-Id: 789981 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 9F8384F1E4 for ; Thu, 18 Apr 2024 03:12:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713409932; cv=none; b=htlO2oKiWY6HWRfwhFvBDZiuPwwIwzXUPp+PjYJfcUAklWAAtO/3Fn3boRvhm2Xwh4rssbf56mawby1juAxNIGPCeaJZXZ6o26gkGWW2esxBSMZC/2veUPIpYEzvpcrgSQaB/X4+nhmissMzS63WJJkOPMngTJIWUvBYO5TwPVs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713409932; c=relaxed/simple; bh=a0Dws8bCHWQDjut/dq6Un5iD5BkUvh71mEh3bVz34dE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jOqIuT5Jg/TyaM2KXidXdoQqyGMbUyQe8snPG2NwVVwvnMzdYF8/UtQoO21zBhLdL7BRZzHgfkNnIe5XG2TgXu+E5rKW/hDJir4MpR3LYAguiMkAY6cvcIK+1I5ByAam9WxGWIgzcqw3wYLdeQXF8K6TYOGoRwAOFpVi046Bw84= 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=PhbC5r0c; arc=none smtp.client-ip=205.220.180.131 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="PhbC5r0c" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 43I1dwC0031435; Thu, 18 Apr 2024 03:12:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=xGf06k19GpmCskoVfaxh sQXJwVrhXkDkROvHSn0eFw4=; b=PhbC5r0ccUQ35vhEFsEMGTjzT+UdPAXi0KSa yAmSzzi3JOuZe/A2CZQqkKlqWobMBuOqAyQQYueYmlSfq5qzIrWFzaJSfh3T8duO 6tFTwGxRDG4Ux3CYunc1VlEBQ30ICqoDUe/zCH4UVV61kznEnkQkI3vURGqeKpbM XBjzs5iR04zJNwDgabTw/psIePWfSJn1T4pNfXwd425MOM1oAZrh2izNgHQ0f0zz dQaPiVVycTmnQUlgeE/L+LScEkYuuEnQcGI+IG/2VHHvs7vGrujfFOcGgPC6m6yo Ey+8g0TpHAVMIHlhs91uJRn6VX2H54PDTnGATFa7KwkziyrJpw== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3xjqcurn2m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Apr 2024 03:12:06 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 43I3C5MA003846 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Apr 2024 03:12:05 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; Wed, 17 Apr 2024 20:12:03 -0700 From: Zijun Hu To: , , CC: , Subject: [PATCH v3 2/4] Bluetooth: qca: Fix nullptr dereference for non-serdev devices Date: Thu, 18 Apr 2024 11:11:51 +0800 Message-ID: <1713409913-13042-3-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1713409913-13042-1-git-send-email-quic_zijuhu@quicinc.com> References: <1713358336-29619-1-git-send-email-quic_zijuhu@quicinc.com> <1713409913-13042-1-git-send-email-quic_zijuhu@quicinc.com> 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: mor-LxtjF-NPuHxkRs3fmmbmaWY8Z-IK X-Proofpoint-ORIG-GUID: mor-LxtjF-NPuHxkRs3fmmbmaWY8Z-IK 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=2024-04-18_02,2024-04-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 adultscore=0 lowpriorityscore=0 impostorscore=0 suspectscore=0 spamscore=0 priorityscore=1501 phishscore=0 mlxscore=0 bulkscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404180021 hu->serdev is nullptr and will cause nullptr dereference if qca_setup() is called by non-serdev device, fixed by nullptr checking before access. 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 fdaf83d817af..c04b97332bca 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);