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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 67773ECE562 for ; Sat, 15 Sep 2018 01:43:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0455A20866 for ; Sat, 15 Sep 2018 01:43:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0455A20866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com 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 S1729063AbeIOHAj (ORCPT ); Sat, 15 Sep 2018 03:00:39 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:38839 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725746AbeIOHAi (ORCPT ); Sat, 15 Sep 2018 03:00:38 -0400 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 06B2C43DFC8C8; Sat, 15 Sep 2018 09:43:33 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.399.0; Sat, 15 Sep 2018 09:43:26 +0800 From: Wei Yongjun To: David Airlie , Haneen Mohammed , Sean Paul , Mahesh Kumar , Daniel Vetter , "Maarten Lankhorst" CC: Wei Yongjun , , , Subject: [PATCH -next] drm/vkms: Fix possible memory leak in _vkms_get_crc() Date: Sat, 15 Sep 2018 01:53:19 +0000 Message-ID: <1536976399-1295-1-git-send-email-weiyongjun1@huawei.com> X-Mailer: git-send-email 1.8.3.1 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 'vaddr_out' is malloced in _vkms_get_crc() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: db7f419c06d7 ("drm/vkms: Compute CRC with Cursor Plane") Signed-off-by: Wei Yongjun --- drivers/gpu/drm/vkms/vkms_crc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/vkms/vkms_crc.c b/drivers/gpu/drm/vkms/vkms_crc.c index 0a27456..9d9e814 100644 --- a/drivers/gpu/drm/vkms/vkms_crc.c +++ b/drivers/gpu/drm/vkms/vkms_crc.c @@ -125,6 +125,7 @@ static uint32_t _vkms_get_crc(struct vkms_crc_data *primary_crc, mutex_lock(&vkms_obj->pages_lock); if (WARN_ON(!vkms_obj->vaddr)) { mutex_unlock(&vkms_obj->pages_lock); + kfree(vaddr_out); return crc; }