From nobody Fri Sep 25 04:08:51 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 6FF2F3DAAAF; Wed, 16 Sep 2026 18:13:48 +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=1789582433; cv=none; b=Fszn+e616tJcJKg2a7+JFQ6KGB2s1q1SP2mtSzAq71X3sfqpQglWQGZ3NnH/8Bqn2Uduu4MRdEqnoN6WZwsj4You37GTV3o8X4CsXGWi5xYcX7VmqaKPXvQcEqB4rUj0xIzWWCyCw7yNv2V8aclVsIb3Vh+9qaTZkFscrqwhhW4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789582433; c=relaxed/simple; bh=YNCF9zXpl7BclJy2vQTGEe+agcML92SIO46Rgj9QuA0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=C8/OxperBtm92S9T4WdxDNH/WsBqToT7zMoNd8WwgRWBlmVO0s/qyR0tEo1qfneJaYDdPXy3g3QZG8VO2wPEbw9DKqqtUNhvu2FQV97njl8N6XsYwdBkBkh0kUwHtTtF418IfXm7O9U0nsMIjzfMwOPGt2C2keRRk1zqeK6cg/M= 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 zQCowABXwz1S3KpqnUpvCA--.24366S2; Thu, 17 Sep 2026 02:13:38 +0800 (CST) From: Wentao Liang To: airlied@gmail.com Cc: andrzej.hajda@intel.com, andy.yan@rock-chips.com, dri-devel@lists.freedesktop.org, heiko@sntech.de, hjc@rock-chips.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, simona@ffwll.ch, tzimmermann@suse.de, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] drm/rockchip: dsi: Fix second reference leak in dw_mipi_dsi_rockchip_host_attach() Date: Wed, 16 Sep 2026 18:13:10 +0000 Message-Id: <20260916181310.2090958-1-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: zQCowABXwz1S3KpqnUpvCA--.24366S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtFy8ZFyUZFykWw1UuF48WFg_yoWDWFX_K3 4jqr1UWr4xJrnIk3WxA3y3urZFkasF9r48ta1jvFsxAa9rJr1Iq3yFgr1YqF1UAF47AFy7 G3W0qr1rGa13WjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb-xFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F 4UJVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUAVWUtwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE7xkEbV WUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7Cj xVA2Y2ka0xkIwI1lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JF I_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26F4UJV W0obIYCTnIWIevJa73UjIFyTuYvjfUw5l8UUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBgEMA2qqok9-DQABsW Content-Type: text/plain; charset="utf-8" The reference to the dual-DSI partner device obtained through dw_mipi_dsi_rockchip_find_second() is dropped on neither the success path nor when adding the partner as a component fails. Release it on both paths. Fixes: cf6d100dd238 ("drm/rockchip: dsi: add dual mipi support") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/= drm/rockchip/dw-mipi-dsi-rockchip.c index 4ab29410b2c0..2c1f1c53ddda 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -1079,8 +1079,10 @@ static int dw_mipi_dsi_rockchip_host_attach(void *pr= iv_data, DRM_DEV_ERROR(second, "Failed to register component: %d\n", ret); + put_device(second); goto out; } + put_device(second); } =20 return 0; --=20 2.34.1