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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 D2429C677D4 for ; Mon, 8 Oct 2018 18:44:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B34D2087D for ; Mon, 8 Oct 2018 18:44:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Q+lzF+cJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B34D2087D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.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 S1730682AbeJIB5P (ORCPT ); Mon, 8 Oct 2018 21:57:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:45168 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729988AbeJIB5P (ORCPT ); Mon, 8 Oct 2018 21:57:15 -0400 Received: from localhost (ip-213-127-77-176.ip.prioritytelecom.net [213.127.77.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 309142087D; Mon, 8 Oct 2018 18:44:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1539024250; bh=llu042UDqR+/766t8VziI+j8gv0E4gvYC3x8eGaUhhc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q+lzF+cJjQxEhDX96BeQpgewTTPUC4MaxCuUl5vZ7T2lorB0Qf4iWhgjk4Lt9QHuB Se3qDE9Pky6zDbE0gWPuSop8Ank3OmAr4T8GWNAhnInc/NI1M38dYp/liC4ObxMEvA fcUzwRUr7Quj2oFcnTAdXLebjQ5a9TJlCcA29T0o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Christian=20K=C3=B6nig?= , Andrey Grodzovsky , Alex Deucher , Sasha Levin Subject: [PATCH 4.14 71/94] drm/amdgpu: fix error handling in amdgpu_cs_user_fence_chunk Date: Mon, 8 Oct 2018 20:31:52 +0200 Message-Id: <20181008175609.941081208@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181008175605.067676667@linuxfoundation.org> References: <20181008175605.067676667@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Christian König" [ Upstream commit 0165de983272d1fae0809ed9db47c46a412279bc ] Slowly leaking memory one page at a time :) Signed-off-by: Christian König Reviewed-by: Andrey Grodzovsky Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -37,6 +37,7 @@ static int amdgpu_cs_user_fence_chunk(st { struct drm_gem_object *gobj; unsigned long size; + int r; gobj = drm_gem_object_lookup(p->filp, data->handle); if (gobj == NULL) @@ -48,20 +49,26 @@ static int amdgpu_cs_user_fence_chunk(st p->uf_entry.tv.shared = true; p->uf_entry.user_pages = NULL; - size = amdgpu_bo_size(p->uf_entry.robj); - if (size != PAGE_SIZE || (data->offset + 8) > size) - return -EINVAL; - - *offset = data->offset; - drm_gem_object_put_unlocked(gobj); + size = amdgpu_bo_size(p->uf_entry.robj); + if (size != PAGE_SIZE || (data->offset + 8) > size) { + r = -EINVAL; + goto error_unref; + } + if (amdgpu_ttm_tt_get_usermm(p->uf_entry.robj->tbo.ttm)) { - amdgpu_bo_unref(&p->uf_entry.robj); - return -EINVAL; + r = -EINVAL; + goto error_unref; } + *offset = data->offset; + return 0; + +error_unref: + amdgpu_bo_unref(&p->uf_entry.robj); + return r; } static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)