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Tue, 25 Jul 2023 11:22:09 +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 v3 1/3] shared/vcp: Fixed the crash observed with VOCS Date: Tue, 25 Jul 2023 14:21:24 +0300 Message-Id: <20230725112126.49656-2-nitin.jadhav@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230725112126.49656-1-nitin.jadhav@nxp.com> References: <20230725112126.49656-1-nitin.jadhav@nxp.com> X-ClientProxiedBy: SG2PR01CA0185.apcprd01.prod.exchangelabs.com (2603:1096:4:189::19) To AS8PR04MB9126.eurprd04.prod.outlook.com (2603:10a6:20b:449::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB9126:EE_|DBBPR04MB7580:EE_ X-MS-Office365-Filtering-Correlation-Id: ab54e28d-1f82-4d6d-4328-08db8d016287 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 11:21:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Jadhav X-Patchwork-Id: 706706 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 6DE59C001E0 for ; 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DBG statement wrongly accessed value to print the log that caused crash. Fix - Corrected audio output descriptor read variable - Corrected the audio location debug printing function - Allocated the memory as char pointer to the audio descriptor variable and copied the string to be displayed. - 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 11:21:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nitin Jadhav X-Patchwork-Id: 706264 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 BA884C0015E for ; Tue, 25 Jul 2023 11:22:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234443AbjGYLWY (ORCPT ); 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Current number of handles should be increase 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);