From mboxrd@z Thu Jan 1 00:00:00 1970 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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 885E1C07E9C for ; Sun, 4 Jul 2021 23:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 773486135A for ; Sun, 4 Jul 2021 23:13:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234308AbhGDXQe (ORCPT ); Sun, 4 Jul 2021 19:16:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:50502 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234057AbhGDXOw (ORCPT ); Sun, 4 Jul 2021 19:14:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C15A06162A; Sun, 4 Jul 2021 23:11:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625440264; bh=S/VLIVkYk1uLWSewoxryVdCxBD48RHaJTth9LF1k63Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F6EPCciY5OQU120bYdBDZ+5zwTnC6NUdMnjiEHs5w1bmciEV7Ab0fOYBXT9jH5AqS /rm6DSJ6caksR11n5UunOJCs5ez4pkj4gG1vxSIQkIl+VoBhmUppI9WsoHyLeV4ML0 WHaq/zKLinLHUEs3zfBzQXRQfmUKgxCiewfD4u9RwzIPqAC4xldgvzYsl+13ZA5hqn 87/efOxX8h24/FMgszh1uKQWIRL6cjfBOF8dhSDXvIZL7LxIbedHx2yY9MVeCMZq6N 9yvpj5Dwji4JtaCoEnadmW5bqqlZHJ0+IaS1qGr5MAmoAKdA24hybLi7VSFPaEYQ40 un7MCXqOybg9A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Igor Matheus Andrade Torrente , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 16/31] media: em28xx: Fix possible memory leak of em28xx struct Date: Sun, 4 Jul 2021 19:10:28 -0400 Message-Id: <20210704231043.1491209-16-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210704231043.1491209-1-sashal@kernel.org> References: <20210704231043.1491209-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-media@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 f84a1208d5d3..3612f0d730dd 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -736,7 +736,8 @@ 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; } } @@ -751,7 +752,7 @@ 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; @@ -862,6 +863,9 @@ static int em28xx_ir_init(struct em28xx *dev) dev->ir = NULL; rc_free_device(rc); kfree(ir); +ref_put: + em28xx_shutdown_buttons(dev); + kref_put(&dev->ref, em28xx_free_device); return err; } -- 2.30.2