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Mon, 27 Oct 2025 23:09:33 -0700 (PDT) Received: from localhost.localdomain ([124.77.218.104]) by smtp.googlemail.com with ESMTPSA id 41be03b00d2f7-b71268bd810sm9382533a12.6.2025.10.27.23.09.30 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 27 Oct 2025 23:09:32 -0700 (PDT) From: Miaoqian Lin To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , "benjamin.gaignard@linaro.org" , Philippe Cornu , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: linmq006@gmail.com, stable@vger.kernel.org Subject: [PATCH] drm/of: Fix device node reference leak in drm_of_panel_bridge_remove Date: Tue, 28 Oct 2025 14:09:18 +0800 Message-Id: <20251028060918.65688-1-linmq006@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" of_graph_get_remote_node() returns a device node with its reference count incremented. The caller is responsible for releasing this reference when the node is no longer needed. Add of_node_put(remote) to fix the reference leak. Found via static analysis. Fixes: c70087e8f16f ("drm/drm_of: add drm_of_panel_bridge_remove function") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin --- include/drm/drm_of.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h index 7f0256dae3f1..5940b1cd542b 100644 --- a/include/drm/drm_of.h +++ b/include/drm/drm_of.h @@ -171,6 +171,7 @@ static inline int drm_of_panel_bridge_remove(const stru= ct device_node *np, return -ENODEV; =20 bridge =3D of_drm_find_bridge(remote); + of_node_put(remote); drm_panel_bridge_remove(bridge); =20 return 0; --=20 2.39.5 (Apple Git-154)