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 4D5741C5E68; Thu, 1 Aug 2024 00:24:44 +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=1722471884; cv=none; b=iDqKJ0GXdpUM275WF0cTSBmSF6KaWUKhZK2KtFOolacXZQv8tl0i4yNfcstO5h59emAAcJawnPC57z0upn7ledMKwMizf8cMf8RFIjOVm8uAz2cAtSUaBbPUi0Vq55nl08w/av52+w9rP12v1lhsJrjriZbj7A71NSfZs+HHFDI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722471884; c=relaxed/simple; bh=33K2KQ2UCBY2K6eR3q27pBpmbJri+Oj+oWH2YTGzw2g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HZF1BkJCryQrvoKC5GJzAJxpauoLo61AvOhwHj97NwV04Ss7LrHlJ7H/fDStdkvo5UtdDRZ50/oZWPe2WX/16BPvjFmosiRU8UKmTKbvoBV8zu8VSGxBasOszW+wFU7+NtdxpR7XbyRzzASuehvIH9+/DSzDYCNvGok8FxoG7aM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Rp6zm/O5; 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="Rp6zm/O5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 51382C32786; Thu, 1 Aug 2024 00:24:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722471884; bh=33K2KQ2UCBY2K6eR3q27pBpmbJri+Oj+oWH2YTGzw2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Rp6zm/O50hUO5j8+psm2Sohn9lZbWLXaYK9jfihfDlQ1UYjyOkH3n8VINCE2zFp/W OalwymPexHD0HZC+3AMHCEzhswP9o44l+1gGpI7Uvq9kMDxmhVjQ7oa7amHCmDaXxK PGEqLR7yl+oBVX1iUGfm7IQOZmJwnKGA+0dSvCFTgCgEE5NxNYQRI/DH46OYW6aIYB iZuH74MOTXSTZOeOZMvag4VZNjwB28lhmax775RkxvSnc7v5tR5Cn5Eow3v+DLp3/i Uw21u2TjiVFvmQth9bj5DifYt3DeGYKQ7BGnV5KZLtrhV0/TcUg65E0ITonIw1t8zc 7EEe8u9WxTiWw== 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, jun.lei@amd.com, alex.hung@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 6.6 51/83] drm/amd/display: added NULL check at start of dc_validate_stream Date: Wed, 31 Jul 2024 20:18:06 -0400 Message-ID: <20240801002107.3934037-51-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801002107.3934037-1-sashal@kernel.org> References: <20240801002107.3934037-1-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 6.6.43 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 84923c5400d32..733e445331ea5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -3927,6 +3927,9 @@ 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