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Tue, 25 Jul 2023 13:48:04 +0000 From: Nitin Jadhav To: linux-bluetooth@vger.kernel.org Cc: devyani.godbole@nxp.com, pav@iki.fi, luiz.dentz@gmail.com, sathish.narasimman@intel.com, nitin.jadhav@nxp.com Subject: [PATCH BlueZ v4 1/3] shared/vcp: Fix the crash observed with VOCS Date: Tue, 25 Jul 2023 16:47:40 +0300 Message-Id: <20230725134742.51651-2-nitin.jadhav@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230725134742.51651-1-nitin.jadhav@nxp.com> References: <20230725134742.51651-1-nitin.jadhav@nxp.com> X-ClientProxiedBy: AS4P189CA0037.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:5dd::8) To AS8PR04MB9126.eurprd04.prod.outlook.com (2603:10a6:20b:449::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB9126:EE_|PAXPR04MB9593:EE_ X-MS-Office365-Filtering-Correlation-Id: aa9e3cd9-729e-44d7-271d-08db8d15c556 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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Fix - Correcting it, to access rdb has resolved the problem in VOCS. - Same correction is done for VCS. Reported-by: Pauli Virtanen --- src/shared/vcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/shared/vcp.c b/src/shared/vcp.c index 74bd01729..314618664 100644 --- a/src/shared/vcp.c +++ b/src/shared/vcp.c @@ -1719,10 +1719,10 @@ bool bt_vcp_attach(struct bt_vcp *vcp, struct bt_gatt_client *client) return false; bt_uuid16_create(&uuid, VCS_UUID); - gatt_db_foreach_service(vcp->ldb->db, &uuid, foreach_vcs_service, vcp); + gatt_db_foreach_service(vcp->rdb->db, &uuid, foreach_vcs_service, vcp); bt_uuid16_create(&uuid, VOL_OFFSET_CS_UUID); - gatt_db_foreach_service(vcp->ldb->db, &uuid, foreach_vocs_service, vcp); + gatt_db_foreach_service(vcp->rdb->db, &uuid, foreach_vocs_service, vcp); return true; } From patchwork Tue Jul 25 13:47:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Jadhav X-Patchwork-Id: 706705 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 D93BDC001DF for ; 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DBG statement wrongly accessed value to print the log that caused the crash. Fix - Corrected audio output descriptor read variable - Corrected the audio location debug printing function - Allocated the memory as a char pointer to the audio descriptor variable. - Corrected the audio descriptor pointer checking condition --- src/shared/vcp.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) diff --git a/src/shared/vcp.c b/src/shared/vcp.c index 314618664..0408531b2 100644 --- a/src/shared/vcp.c +++ b/src/shared/vcp.c @@ -973,7 +973,7 @@ static void vocs_voaodec_read(struct gatt_db_attribute *attrib, struct bt_vocs *vocs = user_data; struct iovec iov; - iov.iov_base = &vocs->vocs_ao_dec; + iov.iov_base = vocs->vocs_ao_dec; iov.iov_len = strlen(vocs->vocs_ao_dec); gatt_db_attribute_read_result(attrib, id, 0, iov.iov_base, @@ -1385,11 +1385,12 @@ static void read_vocs_audio_location(struct bt_vcp *vcp, bool success, const uint8_t *value, uint16_t length, void *user_data) { - uint32_t *vocs_audio_loc; - struct iovec iov = { - .iov_base = (void *) value, - .iov_len = length, - }; + uint32_t vocs_audio_loc; + + if (!value) { + DBG(vcp, "Unable to get VOCS Audio Location"); + return; + } if (!success) { DBG(vcp, "Unable to read VOCS Audio Location: error 0x%02x", @@ -1397,13 +1398,9 @@ static void read_vocs_audio_location(struct bt_vcp *vcp, bool success, return; } - vocs_audio_loc = iov_pull_mem(&iov, sizeof(uint32_t)); - if (!*vocs_audio_loc) { - DBG(vcp, "Unable to get VOCS Audio Location"); - return; - } + memcpy(&vocs_audio_loc, value, length); - DBG(vcp, "VOCS Audio Loc:%x", *vocs_audio_loc); + DBG(vcp, "VOCS Audio Loc: %x", vocs_audio_loc); } @@ -1413,10 +1410,11 @@ static void read_vocs_audio_descriptor(struct bt_vcp *vcp, bool success, void *user_data) { char *vocs_ao_dec_r; - struct iovec iov = { - .iov_base = (void *) value, - .iov_len = length, - }; + + if (!value) { + DBG(vcp, "Unable to get VOCS Audio Location"); + return; + } if (!success) { DBG(vcp, "Unable to read VOCS Audio Descriptor: error 0x%02x", @@ -1424,13 +1422,18 @@ static void read_vocs_audio_descriptor(struct bt_vcp *vcp, bool success, return; } - vocs_ao_dec_r = iov_pull_mem(&iov, length); - if (!*vocs_ao_dec_r) { + vocs_ao_dec_r = malloc(length+1); + memset(vocs_ao_dec_r, 0, length+1); + memcpy(vocs_ao_dec_r, value, length); + + if (!vocs_ao_dec_r) { DBG(vcp, "Unable to get VOCS Audio Descriptor"); return; } - DBG(vcp, "VOCS Audio Descriptor:%s", *vocs_ao_dec_r); + DBG(vcp, "VOCS Audio Descriptor: %s", vocs_ao_dec_r); + free(vocs_ao_dec_r); + vocs_ao_dec_r = NULL; } static void vcp_pending_destroy(void *data) From patchwork Tue Jul 25 13:47:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Jadhav X-Patchwork-Id: 706704 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 2EB08C0015E for ; Tue, 25 Jul 2023 13:48:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231522AbjGYNsV (ORCPT ); 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hence it should be included under a primary service VCS. The current number of handles is increased to accommodate the included service --- src/shared/vcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/shared/vcp.c b/src/shared/vcp.c index 0408531b2..263da4c30 100644 --- a/src/shared/vcp.c +++ b/src/shared/vcp.c @@ -998,7 +998,7 @@ static struct bt_vcs *vcs_new(struct gatt_db *db, struct bt_vcp_db *vdb) /* Populate DB with VCS attributes */ bt_uuid16_create(&uuid, VCS_UUID); - vcs->service = gatt_db_add_service(db, &uuid, true, 9); + vcs->service = gatt_db_add_service(db, &uuid, true, 10); gatt_db_service_add_included(vcs->service, vdb->vocs->service); gatt_db_service_set_active(vdb->vocs->service, true);