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Mon, 01 Sep 2025 01:04:45 -0700 (PDT) Received: from vickymqlin-1vvu545oca.codev-2.svc.cluster.local ([14.22.11.164]) by smtp.googlemail.com with ESMTPSA id d2e1a72fcca58-77241f08b45sm5982326b3a.22.2025.09.01.01.04.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Sep 2025 01:04:44 -0700 (PDT) From: Miaoqian Lin To: Andreas Noever , Michael Jamet , Mika Westerberg , Yehezkel Bernat , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linmq006@gmail.com, stable@vger.kernel.org Subject: [PATCH] thunderbolt: debugfs: Fix dentry reference leaks in margining_port_init Date: Mon, 1 Sep 2025 16:04:37 +0800 Message-Id: <20250901080438.2278730-1-linmq006@gmail.com> X-Mailer: git-send-email 2.35.1 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 Content-Type: text/plain; charset="utf-8" The debugfs_lookup() function returns a dentry with an increased reference count that must be released by calling dput(). Fixes: d0f1e0c2a699 ("thunderbolt: Add support for receiver lane margining") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin --- drivers/thunderbolt/debugfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index f8328ca7e22e..2aadbec9a3e5 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -1770,6 +1770,7 @@ static void margining_port_init(struct tb_port *port) port->usb4->margining =3D margining_alloc(port, &port->usb4->dev, USB4_SB_TARGET_ROUTER, 0, parent); + dput(parent); } =20 static void margining_port_remove(struct tb_port *port) --=20 2.35.1