From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D07A61D54D; Tue, 14 May 2024 11:12:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715685176; cv=none; b=cYs8SGEwMWewgxEo/9e5ePMKVZVr1qceUsL6Yxa5q+sCHOEVwkPz4vGvFg2aBB0Y1JPqISm0MFrpU6y0h/Q5069cwAt+eZJbSNNA2nf3hrGsB9Q/9xk+u34TQcmB0xJTcldOOPcFt8gVMxEMtEpxblWM7JQs569CjAyXtdR6/x4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715685176; c=relaxed/simple; bh=dKSky5piraQyAMdF2CGw6Hug7QyVYt96LnGHeRxjU5k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E9XCbsRuVQr4EgA613dnpG129PxX6sC2cY6jsHFRDX3mbTFnijvPMgPjEt9KBju8/NqeWfK9fqfzScqcBFKNTF0Url5g+ucVTM81l+Rbu3zZY1uE0mG3bcCUFy8R/oBVXrAAnxu4vwiLJUGAMlnYvapXN13GlvJHzvmF2SGKpmU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SxCCpVXR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SxCCpVXR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34A80C32786; Tue, 14 May 2024 11:12:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1715685176; bh=dKSky5piraQyAMdF2CGw6Hug7QyVYt96LnGHeRxjU5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SxCCpVXRQcq2ded9XJLnYh5ORdExhAzton+c/JSQhpwHwg0iM6ehQsha33tPYvFB3 OtXziLS5bakTYP/i/FUfVsy9SSNaO59AomtN4ZrHalPalzipr3SuWEEUXotCOpFDUL yWw5VRvvv++GGPTiwsNQVWHRbnA8RhUWL68htuDM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harry Wentland , Rodrigo Siqueira , Roman Li , Alex Hung , Alex Deucher , Sasha Levin Subject: [PATCH 6.6 147/301] drm/amd/display: Skip on writeback when its not applicable Date: Tue, 14 May 2024 12:16:58 +0200 Message-ID: <20240514101037.806054946@linuxfoundation.org> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240514101032.219857983@linuxfoundation.org> References: <20240514101032.219857983@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Hung [ Upstream commit ecedd99a9369fb5cde601ae9abd58bca2739f1ae ] [WHY] dynamic memory safety error detector (KASAN) catches and generates error messages "BUG: KASAN: slab-out-of-bounds" as writeback connector does not support certain features which are not initialized. [HOW] Skip them when connector type is DRM_MODE_CONNECTOR_WRITEBACK. Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3199 Reviewed-by: Harry Wentland Reviewed-by: Rodrigo Siqueira Acked-by: Roman Li Signed-off-by: Alex Hung Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) 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 3442e08f47876..98dd07e3726af 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2974,6 +2974,10 @@ static int dm_resume(void *handle) /* Do mst topology probing after resuming cached state*/ drm_connector_list_iter_begin(ddev, &iter); drm_for_each_connector_iter(connector, &iter) { + + if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) + continue; + aconnector = to_amdgpu_dm_connector(connector); if (aconnector->dc_link->type != dc_connection_mst_branch || aconnector->mst_root) @@ -5756,6 +5760,9 @@ get_highest_refresh_rate_mode(struct amdgpu_dm_connector *aconnector, &aconnector->base.probed_modes : &aconnector->base.modes; + if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_WRITEBACK) + return NULL; + if (aconnector->freesync_vid_base.clock != 0) return &aconnector->freesync_vid_base; @@ -8445,6 +8452,9 @@ static void amdgpu_dm_commit_audio(struct drm_device *dev, continue; notify: + if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) + continue; + aconnector = to_amdgpu_dm_connector(connector); mutex_lock(&adev->dm.audio_lock); -- 2.43.0