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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 7242DC33CAF for ; Thu, 16 Jan 2020 17:01:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A7192087E for ; Thu, 16 Jan 2020 17:01:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194063; bh=BIVeDkCcdsPl+1TKDpBlMJpU4E/TGWeqRij21fRbRCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=06G2QjepPwPEpPqzzh5v5eCa4AdR0tKuVfLKCnZ09P5y4c0KFkVo+9C4LXVUEpM4L BsYmZQ8EbOOlODMd2tNWSHijeAPxN3rQs6jzVY0jNZdOVHEeZgblK1cfqVYyuou5ZR wIoNbtPWzNCYVOGQoO3of65272rYVzPNheg8pACY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387980AbgAPRBC (ORCPT ); Thu, 16 Jan 2020 12:01:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:51434 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387963AbgAPRA7 (ORCPT ); Thu, 16 Jan 2020 12:00:59 -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 9377A2081E; Thu, 16 Jan 2020 17:00:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194058; bh=BIVeDkCcdsPl+1TKDpBlMJpU4E/TGWeqRij21fRbRCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hPfux9AE1B9PWKB5ichcKafeFIwjHFvP27QLeg2YCV/HzyBlRPIDcz0U3L0FSLLae OooTHWYZjUh7AlFLwGjsOV2L6QWVth8/v0TfzDvBn9biU9MIGxTW971tXZIru7whh0 h8dCKd/WFLYjJ/oEDMd14WRVeBTUi8I+6dBkR0cU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dan Carpenter , Christian Gmeiner , Lucas Stach , Sasha Levin , etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org Subject: [PATCH AUTOSEL 4.19 171/671] drm/etnaviv: potential NULL dereference Date: Thu, 16 Jan 2020 11:51:20 -0500 Message-Id: <20200116165940.10720-54-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116165940.10720-1-sashal@kernel.org> References: <20200116165940.10720-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dan Carpenter [ Upstream commit 9e05352340d3a3e68c144136db9810b26ebb88c3 ] The etnaviv_gem_prime_get_sg_table() is supposed to return error pointers. Otherwise it can lead to a NULL dereference when it's called from drm_gem_map_dma_buf(). Fixes: 5f4a4a73f437 ("drm/etnaviv: fix gem_prime_get_sg_table to return new SG table") Signed-off-by: Dan Carpenter Reviewed-by: Christian Gmeiner Signed-off-by: Lucas Stach Signed-off-by: Sasha Levin --- drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c index 0566171f8df2..f21529e635e3 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c @@ -15,7 +15,7 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj) int npages = obj->size >> PAGE_SHIFT; if (WARN_ON(!etnaviv_obj->pages)) /* should have already pinned! */ - return NULL; + return ERR_PTR(-EINVAL); return drm_prime_pages_to_sg(etnaviv_obj->pages, npages); } -- 2.20.1