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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 088B2C5DF62 for ; Wed, 6 Nov 2019 09:53:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C9FF4217F4 for ; Wed, 6 Nov 2019 09:53:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="n1I8rIIq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731614AbfKFJxi (ORCPT ); Wed, 6 Nov 2019 04:53:38 -0500 Received: from mail-m975.mail.163.com ([123.126.97.5]:58488 "EHLO mail-m975.mail.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726129AbfKFJxi (ORCPT ); Wed, 6 Nov 2019 04:53:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id; bh=GuSX7DsLSoatQP2nsn 2ObQ5BXs4qfIxJlA/iMyeHF5Q=; b=n1I8rIIqQQ8aM0wOQQsICihs4L8tOLFpV1 GSEwHTbgS/85UBfLAcT/LoJ2efWFshsxwNupaWQeLgKHgrGwZQwFYdbbgRuELNum Ui1QH7W/3jZPPnrb2AGf3+Xfk+g/tRjZ1b/4yNXrtRPAFlfvwA21+/VBXLMiTb9w +dn80pFzo= Received: from localhost.localdomain (unknown [202.112.113.212]) by smtp5 (Coremail) with SMTP id HdxpCgC3ag4LmMJdJKR2KA--.242S3; Wed, 06 Nov 2019 17:53:17 +0800 (CST) From: Pan Bian To: Alex Deucher , christian.koenig@amd.com, David1.Zhou@amd.com, David Airlie , Daniel Vetter , Sam Ravnborg Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Pan Bian Subject: [PATCH] drm/amdgpu: fix double reference dropping Date: Wed, 6 Nov 2019 17:53:14 +0800 Message-Id: <1573033994-17102-1-git-send-email-bianpan2016@163.com> X-Mailer: git-send-email 2.7.4 X-CM-TRANSID: HdxpCgC3ag4LmMJdJKR2KA--.242S3 X-Coremail-Antispam: 1Uf129KBjvdXoWruF1DZr18ur4fZF4fuF1xKrg_yoW3KrX_ua y8Jr1kXr1ayFnFgr12yrs8Zrn5tFy5ZrZ5Gr13twsYyryUZ3yjy34DZr4rX3Wxu3ZF9asI g3W2gF1akwn3GjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUjXdb7UUUUU== X-Originating-IP: [202.112.113.212] X-CM-SenderInfo: held01tdqsiiqw6rljoofrz/1tbiVA1lclUMK-VKwgAAsB Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org After dropping the reference of object fence in the loop, it should be set to NULL to protecting dropping its reference again outside the loop. Signed-off-by: Pan Bian --- drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c index 649e68c4479b..3174093f35f3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c @@ -47,6 +47,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size, if (r) goto exit_do_move; dma_fence_put(fence); + fence = NULL; } end_jiffies = jiffies; r = jiffies_to_msecs(end_jiffies - start_jiffies); -- 2.7.4