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=-8.8 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_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 A5F34C10F13 for ; Sun, 14 Apr 2019 23:37:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E2092084E for ; Sun, 14 Apr 2019 23:37:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZZaHshhj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726939AbfDNXh5 (ORCPT ); Sun, 14 Apr 2019 19:37:57 -0400 Received: from mail-qt1-f196.google.com ([209.85.160.196]:38243 "EHLO mail-qt1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725772AbfDNXh4 (ORCPT ); Sun, 14 Apr 2019 19:37:56 -0400 Received: by mail-qt1-f196.google.com with SMTP id d13so17229020qth.5 for ; Sun, 14 Apr 2019 16:37:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=apJnCVkg9SlI3LejkbS9xZBwpDP1otabvwHbIvfC50c=; b=ZZaHshhj6swMBkXkMG5U9BNcG9CIr/BELD7OuMBpC02n6g1o2AtyD1wLfRMiLGv05M zZb/CfarBOWdk/9RM4CAOOjm8yoef3nxUKtRvc3aHMImAwunIT1xn6j/RS4LYlWlqfLB xIqKst9jGWgyVqw3OXkDThVlHtvFqkXMQxP/AuzntOQWJr9F23KToAzHsz1ENpZzkIx3 pdnjlZV09lgFGflePZsrnk+pVLUmvdheH7wMF+CWQFLbNrfhmwB1ycVMCjRpQAd8QZwJ tAGIqo7laU5EFzfWwCJUxnAJ0HLw01af7t2PuUCWTgl6GcKtJ6h0rQVIFtoCAQ78/7Gf t8/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=apJnCVkg9SlI3LejkbS9xZBwpDP1otabvwHbIvfC50c=; b=aLgeVp1Y+5x4TrsAC82lQZmgpLszdWm33bkkFpUOnN6nwvXvjUb8cRgcK0vV0qMDFE Edio4pak0FgiqBtP9eqrzQ7JYJawc2tyZo5PjVot3tMFrv8F2Ja+Gf2PjOdP4W6WI9UQ IMJlnqrDnAemqORpdg5C17Tb9rhv+o+sDkz28HMwJwchCGXCIdpXTIoByzmzd0HYwzPF 4IxZNMnwJ1a3JAslbxCsaqVhcDYGJgSnJejNr3tgB9Eo5eMrBoOPVIZUU0oCR2fGRSjX s1T3ZzNEnv9uTj6VxOVCJVTLrL1Ub3nCIdu4pBsKEt5NLHhWkkK9KDBqXZPBfNSOcNkD rhRQ== X-Gm-Message-State: APjAAAWkkqEFOAzeWevN38SfBSoM9Eri32ndI3FzoNhjxJ6NFufwsoKi mKgPybCsPXbwYDUpe4IvKeJedi3o2Bg= X-Google-Smtp-Source: APXvYqxdkO/g/gHSY+RC72TrM04vEjOVJwcgF/9dzmwhMaXaLUFUlVqfH/LCLoxcOn2aSf+LRePocQ== X-Received: by 2002:a0c:b096:: with SMTP id o22mr44360249qvc.170.1555285075780; Sun, 14 Apr 2019 16:37:55 -0700 (PDT) Received: from debian (hlfxns017vw-142-68-56-253.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.68.56.253]) by smtp.gmail.com with ESMTPSA id q6sm31001548qkj.87.2019.04.14.16.37.54 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 14 Apr 2019 16:37:55 -0700 (PDT) From: Brian Yip To: christian.koenig@amd.com Cc: ray.huang@amd.com, Jerry.Zhang@amd.com, airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Brian Yip Subject: [PATCH 3/3] drm/ttm: Fix ttm_bo_glob.kobj state on cleanup Date: Sun, 14 Apr 2019 23:37:29 +0000 Message-Id: <20190414233729.17956-4-itsbriany@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190414233729.17956-1-itsbriany@gmail.com> References: <20190414233729.17956-1-itsbriany@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cleanup ttm_bo_glob.kobj when its reference count hits 0 so that it can be re-initialized by future ttm_bo_global_init calls without dumping a stack trace. Signed-off-by: Brian Yip --- drivers/gpu/drm/ttm/ttm_bo.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 988416fb8a0b..1e1844f4a4fa 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1535,6 +1535,10 @@ static void ttm_bo_global_release(void) kobject_del(&glob->kobj); kobject_put(&glob->kobj); ttm_mem_global_release(&ttm_mem_glob); + + if (!kref_read(&glob->kobj.kref)) + glob->kobj.state_initialized = 0; + out: mutex_unlock(&ttm_global_mutex); } -- 2.20.1