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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 1C53EC47E48 for ; Tue, 6 Jul 2021 12:01:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1106C620E5 for ; Tue, 6 Jul 2021 12:01:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239860AbhGFL77 (ORCPT ); Tue, 6 Jul 2021 07:59:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:47552 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237174AbhGFLf7 (ORCPT ); Tue, 6 Jul 2021 07:35:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DFB1961EC9; Tue, 6 Jul 2021 11:25:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570755; bh=ufUr61OH30M4Hxk7SL0COsncKi5k41MsTd6RCQQpcUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sxz7gOW7Gk4EmnLB8zV1Z2yD94UV2siopSq2Q5iUJU8iw7bz5QwRWX0LknOcTxlLc 0QIUUkwW7A6KDlIpaMjfDjyHzNe7999TwQmPMuiwJz5HuIwehXwTYsQ+dYmECflo1g 8QX8w7D8880VLmS7smgplda6pfcTiJrQLv033ROJKOM+DaYlQmeURg9ukteSMxMCbx uEjkpkBOauQ0MGTAJeAw5qfi9Xdeh0yO9d1CZBPozWKJwQF9gguM46u0uaDf4dXocv PyLtJt+6/buK+QJJE5JjFT+5/4JhgFafv9vWlJffwfISezqXpw0HwjnyC2ySl2dhJu JXEYXSbMncM5A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mark Yacoub , Harry Wentland , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 42/74] drm/amd/display: Verify Gamma & Degamma LUT sizes in amdgpu_dm_atomic_check Date: Tue, 6 Jul 2021 07:24:30 -0400 Message-Id: <20210706112502.2064236-42-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706112502.2064236-1-sashal@kernel.org> References: <20210706112502.2064236-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Yacoub [ Upstream commit 03fc4cf45d30533d54f0f4ebc02aacfa12f52ce2 ] For each CRTC state, check the size of Gamma and Degamma LUTs so unexpected and larger sizes wouldn't slip through. TEST: IGT:kms_color::pipe-invalid-gamma-lut-sizes v2: fix assignments in if clauses, Mark's email. Reviewed-by: Harry Wentland Signed-off-by: Mark Yacoub Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++ .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 + .../amd/display/amdgpu_dm/amdgpu_dm_color.c | 41 ++++++++++++++++--- 3 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index fca466d4806b..11da904fcb7e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7407,6 +7407,10 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, old_crtc_state->vrr_enabled == new_crtc_state->vrr_enabled) continue; + ret = amdgpu_dm_verify_lut_sizes(new_crtc_state); + if (ret) + goto fail; + if (!new_crtc_state->enable) continue; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index c8c525a2b505..54163c970e7a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -387,6 +387,7 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, #define MAX_COLOR_LEGACY_LUT_ENTRIES 256 void amdgpu_dm_init_color_mod(void); +int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state); int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc); int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc, struct dc_plane_state *dc_plane_state); diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c index 2233d293a707..6acc460a3e98 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c @@ -277,6 +277,37 @@ static int __set_input_tf(struct dc_transfer_func *func, return res ? 0 : -ENOMEM; } +/** + * Verifies that the Degamma and Gamma LUTs attached to the |crtc_state| are of + * the expected size. + * Returns 0 on success. + */ +int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state) +{ + const struct drm_color_lut *lut = NULL; + uint32_t size = 0; + + lut = __extract_blob_lut(crtc_state->degamma_lut, &size); + if (lut && size != MAX_COLOR_LUT_ENTRIES) { + DRM_DEBUG_DRIVER( + "Invalid Degamma LUT size. Should be %u but got %u.\n", + MAX_COLOR_LUT_ENTRIES, size); + return -EINVAL; + } + + lut = __extract_blob_lut(crtc_state->gamma_lut, &size); + if (lut && size != MAX_COLOR_LUT_ENTRIES && + size != MAX_COLOR_LEGACY_LUT_ENTRIES) { + DRM_DEBUG_DRIVER( + "Invalid Gamma LUT size. Should be %u (or %u for legacy) but got %u.\n", + MAX_COLOR_LUT_ENTRIES, MAX_COLOR_LEGACY_LUT_ENTRIES, + size); + return -EINVAL; + } + + return 0; +} + /** * amdgpu_dm_update_crtc_color_mgmt: Maps DRM color management to DC stream. * @crtc: amdgpu_dm crtc state @@ -311,14 +342,12 @@ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc) bool is_legacy; int r; - degamma_lut = __extract_blob_lut(crtc->base.degamma_lut, °amma_size); - if (degamma_lut && degamma_size != MAX_COLOR_LUT_ENTRIES) - return -EINVAL; + r = amdgpu_dm_verify_lut_sizes(&crtc->base); + if (r) + return r; + degamma_lut = __extract_blob_lut(crtc->base.degamma_lut, °amma_size); regamma_lut = __extract_blob_lut(crtc->base.gamma_lut, ®amma_size); - if (regamma_lut && regamma_size != MAX_COLOR_LUT_ENTRIES && - regamma_size != MAX_COLOR_LEGACY_LUT_ENTRIES) - return -EINVAL; has_degamma = degamma_lut && !__is_lut_linear(degamma_lut, degamma_size); -- 2.30.2