From patchwork Thu Mar 16 15:53:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Valery Zabrovsky X-Patchwork-Id: 13177950 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 190ACC6FD1F for ; Thu, 16 Mar 2023 16:09:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229797AbjCPQJ3 (ORCPT ); Thu, 16 Mar 2023 12:09:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229476AbjCPQJ1 (ORCPT ); Thu, 16 Mar 2023 12:09:27 -0400 X-Greylist: delayed 449 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 16 Mar 2023 09:09:26 PDT Received: from forward103o.mail.yandex.net (forward103o.mail.yandex.net [37.140.190.177]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90CB08A64; Thu, 16 Mar 2023 09:09:26 -0700 (PDT) Received: from forward100q.mail.yandex.net (forward100q.mail.yandex.net [IPv6:2a02:6b8:c0e:4b:0:640:4012:bb97]) by forward103o.mail.yandex.net (Yandex) with ESMTP id 3BF0310AA90A; Thu, 16 Mar 2023 18:55:46 +0300 (MSK) Received: from vla1-2f6a8787997a.qloud-c.yandex.net (vla1-2f6a8787997a.qloud-c.yandex.net [IPv6:2a02:6b8:c0d:35a1:0:640:2f6a:8787]) by forward100q.mail.yandex.net (Yandex) with ESMTP id 3762F6F40007; Thu, 16 Mar 2023 18:55:46 +0300 (MSK) Received: by vla1-2f6a8787997a.qloud-c.yandex.net (smtp/Yandex) with ESMTPSA id 8tmDo6Yck8c1-N43cg4iV; Thu, 16 Mar 2023 18:55:45 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1678982145; bh=BQReFTG2lcPA75b18D8vey98+5FpL4ag8kMta6cDrLc=; h=Message-Id:Date:Cc:Subject:To:From; b=EtPFiL6PpQMV+ji65NctGCy9xESd+yPzBu6Tdgj0JcTt5nT2pLC38luwMnLIpu3kp 2N9hKaF2o+tkeK2jFkADZtZIoq4eqoP/QwDSeu4E6lOPwIalzbB0EHSZjsPRiIaU2u RzAuBJfL4zXWqlquxs41W3qMqcCO3sX/pxIynifE= Authentication-Results: vla1-2f6a8787997a.qloud-c.yandex.net; dkim=pass header.i=@yandex.ru From: Valery Zabrovsky To: Greg Kroah-Hartman Cc: Valery Zabrovsky , Guo Zhengkui , Aaro Koskinen , Alan Stern , Mian Yousaf Kaukab , Felipe Balbi , Alexey Khoroshilov , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org Subject: [PATCH] usb: gadget: net2280: fix NULL pointer dereference Date: Thu, 16 Mar 2023 18:53:55 +0300 Message-Id: <20230316155356.13391-1-valthebrewer@yandex.ru> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org In net2280_free_request(): If _ep is NULL, then ep is NULL and is dereferenced while trying to produce an error message. The patch replaces dev_err() with pr_err() which works fine. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 9ceafcc2b3ad ("usb: gadget: net2280: print error in ep_ops error paths") Signed-off-by: Valery Zabrovsky --- drivers/usb/gadget/udc/net2280.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 1b929c519cd7..a027d1323993 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -584,8 +584,7 @@ static void net2280_free_request(struct usb_ep *_ep, struct usb_request *_req) ep = container_of(_ep, struct net2280_ep, ep); if (!_ep || !_req) { - dev_err(&ep->dev->pdev->dev, "%s: Invalid ep=%p or req=%p\n", - __func__, _ep, _req); + pr_err("%s: Invalid ep=%p or req=%p\n", __func__, _ep, _req); return; }