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 EAE6514A4C6; Thu, 1 Aug 2024 00:15:27 +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=1722471328; cv=none; b=DUnJ/1IKoCJ96uaIBfZzkbAK/TVfxaxRW7LNnYbIxv0chmZkhcIWhxscWpQ+KePuE19J19qIFEAQDdYKkEkn1cyydRdrkIvIiA4lgArvK75LBD7JSCf73kLP13X/owZxgqyoVZ0Orw/yg8JZ8nbPv6py6a99gsWJZYuxlJosDQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722471328; c=relaxed/simple; bh=vN/0+PCnxw4RkndSR3E8Lcq/Mu7ZWGdNEZe89/ZZz1w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Eeewc60ZaBnubZv23lV/jut7DrKd1mqAjIShduZ0FGP/I4GNzre0EFT5GjygT5b2/3VqwMRMxhpORhO4rVuSKwjiSqWaKSpovyokAqp2xGXZt6ZANRvP7QmbA4d6YWS2pzskXn6abfDzVto8A9vGCVOzP7UQAuIUYt++AOL6r54= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qGybhEmw; 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="qGybhEmw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C503C32786; Thu, 1 Aug 2024 00:15:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722471327; bh=vN/0+PCnxw4RkndSR3E8Lcq/Mu7ZWGdNEZe89/ZZz1w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qGybhEmwWiuzKn/BCSl/O25Sruaqp8u8/6+40OruK37ozzhNkOOexbffD2pTppS7d IoezFyb8Nv+o1OavF+ybiJXD8l9ThAMIeLgNGAGCA0rjhb6rLM4b8HFi3ar6aa90Fr AOrFoSomeTBRssntU27nx04AszfBCSLM6GeA8C7vKpgFi3shFchCc4qXpQQ3zn10H3 7uW5X3wHy0VPWGKA32Qrsw09iQ4ZvgOfrdWK9shyOzmmXcPxCyEcYzkSQLKJEa6QnD E6rJSyGLZcu8BUY4NcgK2Z6xlXr0kVswea8QJzY5ZmCBTX/o8oEoxJdEwyOP13MaYp tyn7gi9o/xmVA== 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 6.10 074/121] drm/amd/display: added NULL check at start of dc_validate_stream Date: Wed, 31 Jul 2024 20:00:12 -0400 Message-ID: <20240801000834.3930818-74-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801000834.3930818-1-sashal@kernel.org> References: <20240801000834.3930818-1-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 6.10.2 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 76a8e90da0d56..dffc663fd1a10 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -4656,6 +4656,9 @@ 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