From patchwork Mon Jul 12 06:03:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 475869 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 435A7C07E99 for ; Mon, 12 Jul 2021 07:00:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F7A061107 for ; Mon, 12 Jul 2021 07:00:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238161AbhGLHDY (ORCPT ); Mon, 12 Jul 2021 03:03:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:38226 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239485AbhGLHCj (ORCPT ); Mon, 12 Jul 2021 03:02:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4976D610D1; Mon, 12 Jul 2021 06:59:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626073190; bh=pm0P6MIYFV4UwASFGjmsJVkEZD7UJkVgOjZ807PFSkk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r93qwt8N5MO9lzsVkWw4qMZogUXBnoQ+pCxXdZEOi6+mca3gRU8rBww3le/8OWLkz BXdWJCQCFHePrP04OpZfQFyNwYOzb5dC+ot7FEYixKPNwFlScz4HAP3fiYPmxfklFF RcyRQssUb7hdrAWcfDjgFrJEGA/njB2n7s3BY/1Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Igor Matheus Andrade Torrente , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.12 156/700] media: em28xx: Fix possible memory leak of em28xx struct Date: Mon, 12 Jul 2021 08:03:59 +0200 Message-Id: <20210712060947.647649506@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060924.797321836@linuxfoundation.org> References: <20210712060924.797321836@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Igor Matheus Andrade Torrente [ Upstream commit ac5688637144644f06ed1f3c6d4dd8bb7db96020 ] The em28xx struct kref isn't being decreased after an error in the em28xx_ir_init, leading to a possible memory leak. A kref_put and em28xx_shutdown_buttons is added to the error handler code. Signed-off-by: Igor Matheus Andrade Torrente Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/usb/em28xx/em28xx-input.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index 5aa15a7a49de..59529cbf9cd0 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -720,7 +720,8 @@ static int em28xx_ir_init(struct em28xx *dev) dev->board.has_ir_i2c = 0; dev_warn(&dev->intf->dev, "No i2c IR remote control device found.\n"); - return -ENODEV; + err = -ENODEV; + goto ref_put; } } @@ -735,7 +736,7 @@ static int em28xx_ir_init(struct em28xx *dev) ir = kzalloc(sizeof(*ir), GFP_KERNEL); if (!ir) - return -ENOMEM; + goto ref_put; rc = rc_allocate_device(RC_DRIVER_SCANCODE); if (!rc) goto error; @@ -839,6 +840,9 @@ error: dev->ir = NULL; rc_free_device(rc); kfree(ir); +ref_put: + em28xx_shutdown_buttons(dev); + kref_put(&dev->ref, em28xx_free_device); return err; }