From nobody Fri Sep 25 04:46:51 2026 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DC1BE3BA225; Wed, 16 Sep 2026 17:50:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789581072; cv=none; b=hHF6afmKi5olyXglSLdjB/w99+XuVfE2sFZmAaCw0SRBTS4FnpMZIZMwwBKwLyw2sMB4zaIA7t5/618dxPH6qMxJrsOkxhO4DbeX7sOfAPLMnKxdDjHVhdggxfLVAnNxlHcUw+5ytBQ6/J6E0QI0CqQR+Th8aCiC5YKxYJWryL0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789581072; c=relaxed/simple; bh=BVv8BY4/Rzc0tTjFsbar678ZUQmCqHNmaMe7G4dldJg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=SbL3Wi5xQ++X/M9qSbVagPiYK8QBQ9u8N6l4uRp7jOffAK3d0lDkU47X2/xWMFf7cA3mAeAW79jH2q2CgZ7g9DBB27PROjiOHRGTymtEddEPdtNgn1jycEO9ghIU+g7JD9EVN3y/nnkDaeqt+U1N6BhPtMGGmb7ZWhc6Wn1qGjs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-05 (Coremail) with SMTP id zQCowACnETzz1qpqsexuCA--.46259S2; Thu, 17 Sep 2026 01:50:43 +0800 (CST) From: Wentao Liang To: airlied@gmail.com Cc: dri-devel@lists.freedesktop.org, jagan@amarulasolutions.com, jbrunet@baylibre.com, khilman@baylibre.com, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, martin.blumenstingl@googlemail.com, mripard@kernel.org, nbelin@baylibre.com, neil.armstrong@linaro.org, simona@ffwll.ch, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/meson: Fix remote device node leak in meson_encoder_dsi_probe() Date: Wed, 16 Sep 2026 17:50:15 +0000 Message-Id: <20260916175015.2089358-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 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 X-CM-TRANSID: zQCowACnETzz1qpqsexuCA--.46259S2 X-Coremail-Antispam: 1UD129KBjvdXoW7GrWkXw47Jr4kAr1DZr17GFg_yoWkWFb_X3 WrAFyDAr1UtrZrtr47CrWxCFZ2y3W5uF4093ZrJayfCFyYyr17Xay7uF1kXF17ur9xCa1D J34rXr1fuF1xKjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb-xFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUtVWrXwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE7xkEbV WUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7Cj xVA2Y2ka0xkIwI1lc7CjxVAaw2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JF I_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJV W0obIYCTnIWIevJa73UjIFyTuYvjTRRD7VDUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiDAQMA2qqpO9uFwAAs1 Content-Type: text/plain; charset="utf-8" The device node returned by of_graph_get_remote_node() is never released. of_drm_find_and_get_bridge() only uses it as a lookup key and takes its own reference on the bridge, so drop the node reference once the lookup is done, as meson_encoder_cvbs_probe() already does. Fixes: 42dcf15f901c ("drm/meson: add DSI encoder") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/meson/meson_encoder_dsi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/me= son/meson_encoder_dsi.c index 5f2eeeaf93b8..4e1ebe617e49 100644 --- a/drivers/gpu/drm/meson/meson_encoder_dsi.c +++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c @@ -120,6 +120,7 @@ int meson_encoder_dsi_probe(struct meson_drm *priv) } =20 meson_encoder_dsi->bridge.next_bridge =3D of_drm_find_and_get_bridge(remo= te); + of_node_put(remote); if (!meson_encoder_dsi->bridge.next_bridge) return dev_err_probe(priv->dev, -EPROBE_DEFER, "Failed to find DSI transceiver bridge\n"); --=20 2.34.1