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{
    "id": 15017,
    "url": "https://patchwork.libcamera.org/api/patches/15017/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/15017/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
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    "msgid": "<20211203164619.1541033-5-hiroh@chromium.org>",
    "date": "2021-12-03T16:46:16",
    "name": "[libcamera-devel,4/7] libcamera: camera_manager: Protect cameras_ by mutex in cleanup()",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "049e3d552aacf147b2ac2d2e7a0fe4e8afc68966",
    "submitter": {
        "id": 63,
        "url": "https://patchwork.libcamera.org/api/people/63/?format=api",
        "name": "Hirokazu Honda",
        "email": "hiroh@chromium.org"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/15017/mbox/",
    "series": [
        {
            "id": 2812,
            "url": "https://patchwork.libcamera.org/api/series/2812/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2812",
            "date": "2021-12-03T16:46:12",
            "name": "Apply clang thread safety annotation libcamera-core and v4l2",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/2812/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/15017/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/15017/checks/",
    "tags": {},
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        "X-Received": "by 2002:a63:6bc4:: with SMTP id\n\tg187mr5337417pgc.220.1638549991659; \n\tFri, 03 Dec 2021 08:46:31 -0800 (PST)",
        "From": "Hirokazu Honda <hiroh@chromium.org>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Sat,  4 Dec 2021 01:46:16 +0900",
        "Message-Id": "<20211203164619.1541033-5-hiroh@chromium.org>",
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        "In-Reply-To": "<20211203164619.1541033-1-hiroh@chromium.org>",
        "References": "<20211203164619.1541033-1-hiroh@chromium.org>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH 4/7] libcamera: camera_manager: Protect\n\tcameras_ by mutex in cleanup()",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
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        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "This fixes the bug that camera_ is accessed without acquiring\nmutex_ in CameraManager::Private::cleanup().\n\nSigned-off-by: Hirokazu Honda <hiroh@chromium.org>\n---\n src/libcamera/camera_manager.cpp | 3 +++\n 1 file changed, 3 insertions(+)",
    "diff": "diff --git a/src/libcamera/camera_manager.cpp b/src/libcamera/camera_manager.cpp\nindex 70d73822..4492edc3 100644\n--- a/src/libcamera/camera_manager.cpp\n+++ b/src/libcamera/camera_manager.cpp\n@@ -178,7 +178,10 @@ void CameraManager::Private::cleanup()\n \t * process deletion requests from the thread's message queue as the event\n \t * loop is not in action here.\n \t */\n+\tmutex_.lock();\n \tcameras_.clear();\n+\tmutex_.unlock();\n+\n \tdispatchMessages(Message::Type::DeferredDelete);\n \n \tenumerator_.reset(nullptr);\n",
    "prefixes": [
        "libcamera-devel",
        "4/7"
    ]
}