linux-kernel - [PATCH 4.19 214/234] usb: dwc2: Fix memory leak in dwc2_hcd

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Message-Id: <20220623164349.106846277@linuxfoundation.org>
Date:   Thu, 23 Jun 2022 18:44:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, stable <stable@...nel.org>,
        Minas Harutyunyan <hminas@...opsys.com>,
        Miaoqian Lin <linmq006@...il.com>
Subject: [PATCH 4.19 214/234] usb: dwc2: Fix memory leak in dwc2_hcd_init

From: Miaoqian Lin <linmq006@...il.com>

commit 3755278f078460b021cd0384562977bf2039a57a upstream.

usb_create_hcd will alloc memory for hcd, and we should
call usb_put_hcd to free it when platform_get_resource()
fails to prevent memory leak.
goto error2 label instead error1 to fix this.

Fixes: 856e6e8e0f93 ("usb: dwc2: check return value after calling platform_get_resource()")
Cc: stable <stable@...nel.org>
Acked-by: Minas Harutyunyan <hminas@...opsys.com>
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Link: https://lore.kernel.org/r/20220530085413.44068-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/dwc2/hcd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -5236,7 +5236,7 @@ int dwc2_hcd_init(struct dwc2_hsotg *hso
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		retval = -EINVAL;
-		goto error1;
+		goto error2;
 	}
 	hcd->rsrc_start = res->start;
 	hcd->rsrc_len = resource_size(res);