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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 09FCEC3DA7F for ; Thu, 1 Aug 2024 00:38:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ABF6110E85D; Thu, 1 Aug 2024 00:38:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="nKq+Rf8K"; dkim-atps=neutral Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by gabe.freedesktop.org (Postfix) with ESMTPS id DF0B310E85C; Thu, 1 Aug 2024 00:38:20 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 3FE4ECE13BD; Thu, 1 Aug 2024 00:38:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 054E8C116B1; Thu, 1 Aug 2024 00:38:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722472698; bh=iPtXXTOTTCYO9TZk2WP4rJQlnMKoQ1qRcUuwJj8voEk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nKq+Rf8KUuPnzFW/EWyzmSbDQSqLlpYY9cVN5e6wcXNZ75cw/c5qNajQM0lqLBhYr tQc2sFgMh7ekjLHOpL69Erkj3OofznA5mrzlSgWxZBkgtBYILCFSc08OkAjILweusK dyZvZxpyVJaIfChSDeQ4g6Y3Y5CXumW7XU9VN4cEJ9HrXDwrJACoXyvaqs6oaWdPOX WCWCxS+RWqPR1qQcLKQX2Bztgs5/oBKp+vEPTrwEkMNn+152nEX7pYFmpg+ztgOUm0 jS3Fb008Qfbar/xhnHtniS3Y6AdCvlUid8hz2ROYkFLeN47otam9yIFBQhElG5L3ol Jnv37VHHl9aYw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: winstang , Alvin Lee , Zaeem Mohamed , Daniel Wheeler , Alex Deucher , Sasha Levin , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, wenjing.liu@amd.com, alex.hung@amd.com, jun.lei@amd.com, hamza.mahfooz@amd.com, george.shen@amd.com, dillon.varone@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.10 24/38] drm/amd/display: added NULL check at start of dc_validate_stream Date: Wed, 31 Jul 2024 20:35:30 -0400 Message-ID: <20240801003643.3938534-24-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801003643.3938534-1-sashal@kernel.org> References: <20240801003643.3938534-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.10.223 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: winstang [ Upstream commit 26c56049cc4f1705b498df013949427692a4b0d5 ] [Why] prevent invalid memory access [How] check if dc and stream are NULL Co-authored-by: winstang Reviewed-by: Alvin Lee Acked-by: Zaeem Mohamed Signed-off-by: winstang Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 0a13c06eea447..6a993cdb101ee 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -2914,6 +2914,9 @@ void resource_build_bit_depth_reduction_params(struct dc_stream_state *stream, enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream) { + if (dc == NULL || stream == NULL) + return DC_ERROR_UNEXPECTED; + struct dc_link *link = stream->link; struct timing_generator *tg = dc->res_pool->timing_generators[0]; enum dc_status res = DC_OK; -- 2.43.0