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=-9.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 EADD6C32789 for ; Sun, 4 Nov 2018 13:55:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB234204FD for ; Sun, 4 Nov 2018 13:55:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="EnkqJvje" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB234204FD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731904AbeKDXJu (ORCPT ); Sun, 4 Nov 2018 18:09:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:49924 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729483AbeKDXJs (ORCPT ); Sun, 4 Nov 2018 18:09:48 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 463B220869; Sun, 4 Nov 2018 13:54:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541339684; bh=vzMpZ58hi0eZsjcsIQun9i4lrMP3vtyZOfmz+wd6uV8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EnkqJvje6LJI1fdTUBnXus5QRderl6tJSOw5VFQNlWXnxzs9gtF6uiblKASZ36nih ggVL9rgIE7ZWK/LHalGQBH4JhKfGwvmWQg8ZNyAXqC7sPt/fQQLRfoNVzBycJz75IK judH7guGMFTTl88bvPJhuJumiLqOZIvz2zyzgF6g= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Nicholas Mc Guire , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH AUTOSEL 3.18 09/13] media: pci: cx23885: handle adding to list failure Date: Sun, 4 Nov 2018 08:54:29 -0500 Message-Id: <20181104135433.88734-9-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181104135433.88734-1-sashal@kernel.org> References: <20181104135433.88734-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicholas Mc Guire [ Upstream commit c5d59528e24ad22500347b199d52b9368e686a42 ] altera_hw_filt_init() which calls append_internal() assumes that the node was successfully linked in while in fact it can silently fail. So the call-site needs to set return to -ENOMEM on append_internal() returning NULL and exit through the err path. Fixes: 349bcf02e361 ("[media] Altera FPGA based CI driver module") Signed-off-by: Nicholas Mc Guire Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/pci/cx23885/altera-ci.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/pci/cx23885/altera-ci.c b/drivers/media/pci/cx23885/altera-ci.c index 2bbbf545b042..a7681719de76 100644 --- a/drivers/media/pci/cx23885/altera-ci.c +++ b/drivers/media/pci/cx23885/altera-ci.c @@ -662,6 +662,10 @@ static int altera_hw_filt_init(struct altera_ci_config *config, int hw_filt_nr) } temp_int = append_internal(inter); + if (!temp_int) { + ret = -ENOMEM; + goto err; + } inter->filts_used = 1; inter->dev = config->dev; inter->fpga_rw = config->fpga_rw; @@ -696,6 +700,7 @@ static int altera_hw_filt_init(struct altera_ci_config *config, int hw_filt_nr) __func__, ret); kfree(pid_filt); + kfree(inter); return ret; } @@ -731,6 +736,10 @@ int altera_ci_init(struct altera_ci_config *config, int ci_nr) } temp_int = append_internal(inter); + if (!temp_int) { + ret = -ENOMEM; + goto err; + } inter->cis_used = 1; inter->dev = config->dev; inter->fpga_rw = config->fpga_rw; @@ -799,6 +808,7 @@ int altera_ci_init(struct altera_ci_config *config, int ci_nr) ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret); kfree(state); + kfree(inter); return ret; } -- 2.17.1