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 562EE1DBB98; Thu, 1 Aug 2024 00:35:01 +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=1722472501; cv=none; b=XpXRpnkN29bG3PEWJGJWTvZ+VEp3F0XKPIgiepgDTs9IZxIiKo5tWgNlYJs98Efix5o9bM/IuEKi2pjFppHRe3gvIJ6eRbhyaz3OF9O+S70v5xKtyRHn+C7o9QHxNY3069HzT89dIcAYQcY/78xVEqL42qEl+iAvohCPN4IhDgI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722472501; c=relaxed/simple; bh=8VrR6MmszBITQ5bU0YppPlCDQg0kTTWA5rw31hIURQQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qYhhxR7MkSIn8L9HQXuo92escxM2H+9C3NFw+5d14oWwiYKMQxXGrOSAL1QZfaF1H0ro7si7FdYpaJ5QfRa2W+A/hw1WPnU2EubqylwvZGY0F6OCg/YRK60DcVLQrBKHtga1xq6/GQ10qtYennqBOrRIztXfYvoJcIOJ37EV4zc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WYD6qsuY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WYD6qsuY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA0FDC116B1; Thu, 1 Aug 2024 00:34:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722472501; bh=8VrR6MmszBITQ5bU0YppPlCDQg0kTTWA5rw31hIURQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WYD6qsuYEhL6pcJc4GjWyOmTCNEgcSlPSQRDIKGHgOOIjbZkmJGSuqk+fhOTe+1XS 3EAHNNot71/vE7gjepgG2NcwMWyvZo5N2YuALzbiMj1PEQPKxZohj9oTvMQI3Kwh6H YX0jS1MXlTuajfoS7rNc0a2iBE/ji7QpihKKeFBKCfwUJG1it83q1wmyCdGzoulZPw 4Kkc4nd31oL+VnYEI3qKv60iD58ZXo/9X9T/4f/EWsM/yHl3CDY7WzW7k7/Xg0TFF7 aJVp9T6t+r1ZrDnd3Dm2qQ0QPkGjD93g4r2R+8aSfvL6jc3bPczPPMOSfKf3LYKACk a5tJDfsJmBhFQ== 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 5.15 31/47] drm/amd/display: added NULL check at start of dc_validate_stream Date: Wed, 31 Jul 2024 20:31:21 -0400 Message-ID: <20240801003256.3937416-31-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801003256.3937416-1-sashal@kernel.org> References: <20240801003256.3937416-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.164 Content-Transfer-Encoding: 8bit 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 42432af34db29..df84f3b521e22 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -2872,6 +2872,9 @@ 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