From patchwork Fri Jan 20 16:09:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Micha=C5=82_Winiarski?= X-Patchwork-Id: 9528895 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B842C601AE for ; Fri, 20 Jan 2017 16:10:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AD53128687 for ; Fri, 20 Jan 2017 16:10:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A224B286B0; Fri, 20 Jan 2017 16:10:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 494CF28687 for ; Fri, 20 Jan 2017 16:10:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2A89B6EB9A; Fri, 20 Jan 2017 16:09:58 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5C3066EB9A for ; Fri, 20 Jan 2017 16:09:57 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP; 20 Jan 2017 08:09:56 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,259,1477983600"; d="scan'208";a="33239907" Received: from irsmsx102.ger.corp.intel.com ([163.33.3.155]) by orsmga002.jf.intel.com with ESMTP; 20 Jan 2017 08:09:56 -0800 Received: from mwiniars-main.igk.intel.com (172.28.171.152) by IRSMSX102.ger.corp.intel.com (163.33.3.155) with Microsoft SMTP Server id 14.3.248.2; Fri, 20 Jan 2017 16:09:55 +0000 From: =?UTF-8?q?Micha=C5=82=20Winiarski?= To: Date: Fri, 20 Jan 2017 17:09:09 +0100 Message-ID: <20170120160909.25443-1-michal.winiarski@intel.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170120152824.14185-1-michal.winiarski@intel.com> References: <20170120152824.14185-1-michal.winiarski@intel.com> MIME-Version: 1.0 X-Originating-IP: [172.28.171.152] Subject: [Intel-gfx] [PATCH v3 1/2] drm/i915/huc: Avoid attempting to authenticate non-existent fw X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP HuC authentication is called even if HuC firmware is not present in the system, leading to NULL ptr dereference on not allocated gem_object. Let's avoid trying to authenticate HuC if its firmware is not loaded successfully. Fixes: dac84a388528 ("drm/i915/huc: Support HuC authentication") v2: Check inside the auth function, split the assert (Michał) v3: Oops, hit send before compiling, s/huc_fw/huc->fw Cc: Anusha Srivatsa Cc: Arkadiusz Hiler Cc: Chris Wilson Reviewed-by: Michal Wajdeczko Signed-off-by: Michał Winiarski --- drivers/gpu/drm/i915/intel_huc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c index 897ef31..5edd4f7 100644 --- a/drivers/gpu/drm/i915/intel_huc.c +++ b/drivers/gpu/drm/i915/intel_huc.c @@ -299,6 +299,9 @@ void intel_guc_auth_huc(struct drm_i915_private *dev_priv) int ret; u32 data[2]; + if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS) + return; + vma = i915_gem_object_ggtt_pin(huc->fw.obj, NULL, 0, 0, PIN_OFFSET_BIAS | GUC_WOPCM_TOP); if (IS_ERR(vma)) {