Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932958AbaFJULQ (ORCPT ); Tue, 10 Jun 2014 16:11:16 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:35374 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755144AbaFJTwF (ORCPT ); Tue, 10 Jun 2014 15:52:05 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Leo Liu , =?UTF-8?q?Christian=20K=C3=B6nig?= , Kamal Mostafa Subject: [PATCH 3.13 139/160] drm/radeon: check buffer relocation offset Date: Tue, 10 Jun 2014 12:46:19 -0700 Message-Id: <1402429600-20477-140-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1402429600-20477-1-git-send-email-kamal@canonical.com> References: <1402429600-20477-1-git-send-email-kamal@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Extended-Stable: 3.13 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.13.11.3 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Leo Liu commit 695daf1a8e731a4b5b89de89a61f32a4d7ad7094 upstream. Signed-off-by: Leo Liu Signed-off-by: Christian König Signed-off-by: Kamal Mostafa --- drivers/gpu/drm/radeon/radeon_uvd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index 60a0044..c085917 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -465,6 +465,10 @@ static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p, cmd = radeon_get_ib_value(p, p->idx) >> 1; if (cmd < 0x4) { + if (end <= start) { + DRM_ERROR("invalid reloc offset %X!\n", offset); + return -EINVAL; + } if ((end - start) < buf_sizes[cmd]) { DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd, (unsigned)(end - start), buf_sizes[cmd]); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/