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 CDC2F26AE6; Thu, 1 Aug 2024 00:09:36 +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=1722470976; cv=none; b=hGxaxcTMjTxFs17iMMgHUekn6aQIXHB99V+XYEQll3jJMKAQWShWAqPwlRjPqnKDSLFckIeC7lSZsrNMeGCp5jURGjZugmgwkmqw18thYYUDYdYnH9MvIei4o71IFZFl1nJUYS3Xf3243OaOTFF05cHMXZ0vNp/DRsBFfcd62Cg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722470976; c=relaxed/simple; bh=w7QQNe2svEeQIEK0b9v3+6bRgR/Nld29VT8pup+EO48=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T1OZxQCaXkMu39KPqwkxWAPqJ9E2YKhtCJXTcaxLMNdYBbN9dAT3LvCW4QAyXuCH/863s3wF18HnH+aeLZ+vOTg55a9Xsm0aqCqvEmMJ1zxQT064OvNO2ErSMb9fpNMayPDvTCq32Nu/xQgAVbRc/GSoQcc3TjBxhcQ0wLeRt7s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NP0sj2TU; 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="NP0sj2TU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AEC8C4AF0E; Thu, 1 Aug 2024 00:09:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722470976; bh=w7QQNe2svEeQIEK0b9v3+6bRgR/Nld29VT8pup+EO48=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NP0sj2TU/UqicBnb7j0s4dgSAfMi8ZDOiPZTO+uxXdofPQTgD365JKPTG+LmXgOGQ rJU48R7Dynd8oWpe5zOEyBQztbXOC/4RhQps/TRoanLZkS4nI0SDDlYWJYT21xbS1v vSZb2CJHBgkma5LL+xW4MV/giwdE70Zjj4IEtD5oY5KWdiH3Bng2irQ0HawH2/Nnwo JCaARf+YeOQ4uMtm+wIV22PDYJt3qA8D/lBn2WdsiQlkIca9+NQUVYElNQ2U/ZsImh foxhk+cfSk6MWS1o0woXWYiTbJesz8vM0os3t0q/FZsl2NX5TiAMOscAkRZ3uxCONT lx/7o0Ox8pv6A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hersen Wu , Harry Wentland , Tom Chung , Daniel Wheeler , Alex Deucher , Sasha Levin , sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, alex.hung@amd.com, hamza.mahfooz@amd.com, roman.li@amd.com, mario.limonciello@amd.com, Wayne.Lin@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.10 012/121] drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6 Date: Wed, 31 Jul 2024 19:59:10 -0400 Message-ID: <20240801000834.3930818-12-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: Hersen Wu [ Upstream commit 84723eb6068c50610c5c0893980d230d7afa2105 ] [Why] Coverity reports OVERRUN warning. Should abort amdgpu_dm initialize. [How] Return failure to amdgpu_dm_init. Reviewed-by: Harry Wentland Acked-by: Tom Chung Signed-off-by: Hersen Wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index e9aac7f7cfdce..9b440b26c6505 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -4543,7 +4543,10 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev) /* There is one primary plane per CRTC */ primary_planes = dm->dc->caps.max_streams; - ASSERT(primary_planes <= AMDGPU_MAX_PLANES); + if (primary_planes > AMDGPU_MAX_PLANES) { + DRM_ERROR("DM: Plane nums out of 6 planes\n"); + return -EINVAL; + } /* * Initialize primary planes, implicit planes for legacy IOCTLS. -- 2.43.0