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 83ABCC4167D for ; Tue, 7 Nov 2023 12:30:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B10B810E5B9; Tue, 7 Nov 2023 12:30:25 +0000 (UTC) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id E08B510E5B7; Tue, 7 Nov 2023 12:30:23 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5EB5961181; Tue, 7 Nov 2023 12:30:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05F77C433D9; Tue, 7 Nov 2023 12:30:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699360223; bh=bDGQYFArKPvTWstkMjeVmNma192FojHGBFgTuORE/n4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E6r0d8KC4ZIliDrp6GjH6Dp7oo/kpvFVuqA1DoZ2LopwlTfFY8J1Ft0Zm1EyhbqQx rWrEJmzlElrs8bJQrvJ1mg6kpho/134WhC05lFo6uvAk9BtvumS65Rt72KeLzka7a+ ffPQ1Hh9CHX2kDc7Zdbz4RQyJWUnVa21V4AL96KfYpQrHgWdF4+OhgpTQZqBbqQYjT FbM+Sj3s7uAoxkpWs86cUb5bSjvQ4F6Gzs7KDK7WDMJRcIcwB70WugBbRyqJqCXzPU xpAeXzLda2QmDalz7YxtCPLFDurpwvQ8p8Q5a+PUyogl7wth7daoc2KMfq+Z5ulIR+ IZ9YBoPP/93Gw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 12/20] drm/amdgpu: Fix potential null pointer derefernce Date: Tue, 7 Nov 2023 07:29:06 -0500 Message-ID: <20231107122940.3762228-12-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231107122940.3762228-1-sashal@kernel.org> References: <20231107122940.3762228-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.137 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Tao Zhou , andrealmeid@igalia.com, shashank.sharma@amd.com, dri-devel@lists.freedesktop.org, Xinhui.Pan@amd.com, amd-gfx@lists.freedesktop.org, lijo.lazar@amd.com, le.ma@amd.com, "Stanley.Yang" , mario.limonciello@amd.com, Alex Deucher , srinivasan.shanmugam@amd.com, candice.li@amd.com, christian.koenig@amd.com, Hawking.Zhang@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: "Stanley.Yang" [ Upstream commit 80285ae1ec8717b597b20de38866c29d84d321a1 ] The amdgpu_ras_get_context may return NULL if device not support ras feature, so add check before using. Signed-off-by: Stanley.Yang Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 2cf49a32ac6c3..e60130653c54e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -5097,7 +5097,8 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev, * Flush RAM to disk so that after reboot * the user can read log and see why the system rebooted. */ - if (need_emergency_restart && amdgpu_ras_get_context(adev)->reboot) { + if (need_emergency_restart && amdgpu_ras_get_context(adev) && + amdgpu_ras_get_context(adev)->reboot) { DRM_WARN("Emergency reboot."); ksys_sync_helper(); -- 2.42.0