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Thu, 26 Aug 2021 14:40:34 +0000 From: Chengfeng Ye To: ffmpeg-devel@ffmpeg.org Date: Thu, 26 Aug 2021 07:40:24 -0700 Message-Id: <20210826144024.95697-1-cyeaa@connect.ust.hk> X-Mailer: git-send-email 2.17.1 X-ClientProxiedBy: HK2PR04CA0071.apcprd04.prod.outlook.com (2603:1096:202:15::15) To TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:b7::8) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ubuntu.localdomain (218.253.253.162) by HK2PR04CA0071.apcprd04.prod.outlook.com (2603:1096:202:15::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4457.18 via Frontend Transport; Thu, 26 Aug 2021 14:40:34 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 6071be24-0bbf-4357-2129-08d9689f763e X-MS-TrafficTypeDiagnostic: TYBP286MB0174: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:268; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: connect.ust.hk X-MS-Exchange-CrossTenant-Network-Message-Id: 6071be24-0bbf-4357-2129-08d9689f763e X-MS-Exchange-CrossTenant-AuthSource: TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Aug 2021 14:40:34.3891 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 6c1d4152-39d0-44ca-88d9-b8d6ddca0708 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: LaDhT89H9gH2pyfL8LhN/ZZ5fs9kAOObk0R4j8dVhUjoZGyZVDYVUD573tFusliZCG0CjnOKV2CpGssuR2ACTw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYBP286MB0174 Subject: [FFmpeg-devel] [PATCH 1/2] libavdevice/avfoundation.m: fix protential unreleased lock issue X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Chengfeng Ye Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: SxdC13T+tRMv The problem here is that the lock ctx->frame_lock will become an unreleased lock if the program returns at line 697, line 735 and line744. Cc: cyeaa@connect.ust.hk Bug tracker link: https://trac.ffmpeg.org/ticket/9385\#ticket Signed-off-by: Chengfeng Ye --- libavdevice/avfoundation.m | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavdevice/avfoundation.m b/libavdevice/avfoundation.m index 1d108417be..8ce3d064c5 100644 --- a/libavdevice/avfoundation.m +++ b/libavdevice/avfoundation.m @@ -693,6 +693,7 @@ static int get_audio_config(AVFormatContext *s) const AudioStreamBasicDescription *basic_desc = CMAudioFormatDescriptionGetStreamBasicDescription(format_desc); if (!basic_desc) { + unlock_frames(ctx); av_log(s, AV_LOG_ERROR, "audio format not available\n"); return 1; } @@ -731,6 +732,7 @@ static int get_audio_config(AVFormatContext *s) ctx->audio_packed) { stream->codecpar->codec_id = ctx->audio_be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; } else { + unlock_frames(ctx); av_log(s, AV_LOG_ERROR, "audio format is not supported\n"); return 1; } @@ -740,6 +742,7 @@ static int get_audio_config(AVFormatContext *s) ctx->audio_buffer_size = CMBlockBufferGetDataLength(block_buffer); ctx->audio_buffer = av_malloc(ctx->audio_buffer_size); if (!ctx->audio_buffer) { + unlock_frames(ctx); av_log(s, AV_LOG_ERROR, "error allocating audio buffer\n"); return 1; }