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Mon, 30 Mar 2026 08:47:55 -0700 (PDT) Received: from junjungu-PC.localdomain ([223.167.147.240]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82ca85fcb84sm7244051b3a.49.2026.03.30.08.47.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2026 08:47:54 -0700 (PDT) From: Felix Gu Date: Mon, 30 Mar 2026 23:47:50 +0800 Subject: [PATCH] usb: misc: usbio: Fix URB memory leak on submit failure Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260330-usbio-v1-1-7141b6dc612a@gmail.com> X-B4-Tracking: v=1; b=H4sIACWbymkC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDY2MD3dLipMx83RRzg1RD02RL80TzRCWg2oKi1LTMCrA50bG1tQAb5kG UVwAAAA== X-Change-ID: 20260330-usbio-d70e15c97a7a To: Israel Cepeda , Hans de Goede , Sakari Ailus , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774885672; l=1153; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=ZxBhTQD/UNucgERdjuVVc9ygUsuIPz1wuK7H8PK0OX0=; b=Bsfyw4GbxSI+TMOdLHNqqvH/Mx4w6Tn99vGk+D2lyfTYHtlklsAu85nj+aZKRiyRbE4PKDztO nt8PHLg1lnoCTeafyEutl0JJW2p/ZMum2v3bKgfga+54ktWEvY9qp48 X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= When usb_submit_urb() fails in usbio_probe(), the previously allocated URB is never freed, causing a memory leak. Add usb_free_urb() call to properly release the URB on the error path. Fixes: 121a0f839dbb ("usb: misc: Add Intel USBIO bridge driver") Signed-off-by: Felix Gu --- drivers/usb/misc/usbio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/misc/usbio.c b/drivers/usb/misc/usbio.c index 2e68d48a2cc0..d4eb3c7bafc4 100644 --- a/drivers/usb/misc/usbio.c +++ b/drivers/usb/misc/usbio.c @@ -614,8 +614,10 @@ static int usbio_probe(struct usb_interface *intf, con= st struct usb_device_id *i usb_fill_bulk_urb(usbio->urb, udev, usbio->rx_pipe, usbio->rxbuf, usbio->rxbuf_len, usbio_bulk_recv, usbio); ret =3D usb_submit_urb(usbio->urb, GFP_KERNEL); - if (ret) + if (ret) { + usb_free_urb(usbio->urb); return dev_err_probe(dev, ret, "Submitting usb urb\n"); + } =20 mutex_lock(&usbio->ctrl_mutex); =20 --- base-commit: 3b058d1aeeeff27a7289529c4944291613b364e9 change-id: 20260330-usbio-d70e15c97a7a Best regards, --=20 Felix Gu