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 5A88A1DFE38; Wed, 6 Nov 2024 12:47:45 +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=1730897265; cv=none; b=HPMQWf6zYfMOh6sFzpJQKaAuMSzMU2mnuMi6sAJH1CzniebJbpcNgqAt9zeQ/aN50r8pUmoh+4DhAVtT8cV4gzCyAkPjYdeRg+yGmP99Yqxke91TusCu2X+ZAM8lhtKOZ7k7ODYZkiWcBhfkNBDLxglUM7nq8U6s/SK1U/yE37s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730897265; c=relaxed/simple; bh=kNsFbjvm/pOIOeCtdQEavRI0qEQSwkpsH20uK7RXBlk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DOt2/56iW+wwpjA88FisefbWgyHDNeqF5TWezoALIWiNS87EUBiEMCDjH5G3tKJRo4r7nj8PyeEOgnWLw+UzVdKmlSf+HcxeuSDGfel1Ouypm7G+KMsgsCJOA6U0/lXsVWAhjF8gBlz9dzc2ULtQrsRC9GxDA1ctGl+ZjT4Wjxo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cbBYDLpw; 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="cbBYDLpw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5BD8C4CECD; Wed, 6 Nov 2024 12:47:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1730897265; bh=kNsFbjvm/pOIOeCtdQEavRI0qEQSwkpsH20uK7RXBlk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cbBYDLpw7OOCJ7SegO2Hl5SE73cMt5jl55+HBXedTdXlErBTTze2eJsljSAc2tpag E1AIQ7GHFq3UiWA9vR4B0WBea0Oy1M6DRVl8InAOjRVNVx/MM2Gjr40MarwExPTnDD 0y+mmVHd5tQX7HLTbPAug2/l4rfQlWPJJJF1YgJc= 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 , Xiangyu Chen Subject: [PATCH 6.1 123/126] drm/amd/display: Skip on writeback when its not applicable Date: Wed, 6 Nov 2024 13:05:24 +0100 Message-ID: <20241106120309.381491216@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241106120306.038154857@linuxfoundation.org> References: <20241106120306.038154857@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Hung commit ecedd99a9369fb5cde601ae9abd58bca2739f1ae upstream. [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: Xiangyu Chen Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2990,6 +2990,10 @@ 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_port) @@ -5722,6 +5726,9 @@ get_highest_refresh_rate_mode(struct amd &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; @@ -8242,6 +8249,9 @@ static void amdgpu_dm_commit_audio(struc continue; notify: + if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) + continue; + aconnector = to_amdgpu_dm_connector(connector); mutex_lock(&adev->dm.audio_lock);