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 E3A3DCF8840 for ; Fri, 4 Oct 2024 18:26:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5D5A210EA6D; Fri, 4 Oct 2024 18:26:47 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="Ldg2YImO"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id AD33410EA6D; Fri, 4 Oct 2024 18:26:46 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id F302C5C0F9D; Fri, 4 Oct 2024 18:26:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82F87C4CEC6; Fri, 4 Oct 2024 18:26:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728066405; bh=hQjwcitZL4jkugWpmBt/ij/ECsBXWg7PvGVYFO4uq9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ldg2YImOjNy/FUmWPLP9C1Xl3YawVpanRgaPWYmVlF4aAWky38jBs4o3zR43LjO4P Jz8hm3UaA4Z58KN1QcevONcO6ws+OgN9n3Vnq/xWPCEgqVvfIHsOZYfft7Q00Gx2K+ lA7Co61VU2VVvDk/qrXUNaNN4qHzhJwhs9bU/WMkwuXeTp+XmUX8b6tNTUoOtUnzU9 J8dkXW6oa02+854ujuSjdo7MH+Ks5hmS717UZpYlibkFL6xO464SYlqH9b5RBfBLna fvg9DqoKzTR4LSA4gY2+2+uuykGCTzx9633cVWXjfLwk3LtBWZ4QV1mVwLCnfgNpJu Nyk+elGBfEqZw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alex Hung , Rodrigo Siqueira , 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, alvin.lee2@amd.com, chiahsuan.chung@amd.com, wenjing.liu@amd.com, sungjoon.kim@amd.com, dillon.varone@amd.com, aurabindo.pillai@amd.com, chiawen.huang@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.6 55/58] drm/amd/display: Check null pointer before dereferencing se Date: Fri, 4 Oct 2024 14:24:28 -0400 Message-ID: <20241004182503.3672477-55-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241004182503.3672477-1-sashal@kernel.org> References: <20241004182503.3672477-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.54 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: Alex Hung [ Upstream commit ff599ef6970ee000fa5bc38d02fa5ff5f3fc7575 ] [WHAT & HOW] se is null checked previously in the same function, indicating it might be null; therefore, it must be checked when used again. This fixes 1 FORWARD_NULL issue reported by Coverity. Acked-by: Alex Hung Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Hung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 50e643bfdfbad..cefa1756e1223 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1691,7 +1691,7 @@ bool dc_validate_boot_timing(const struct dc *dc, if (crtc_timing->pix_clk_100hz != pix_clk_100hz) return false; - if (!se->funcs->dp_get_pixel_format) + if (!se || !se->funcs->dp_get_pixel_format) return false; if (!se->funcs->dp_get_pixel_format( -- 2.43.0