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Thu, 4 Feb 2021 14:58:40 +0000 Subject: Re: [PATCH v6 01/10] [hack] silence ttm fini WARNING To: Gerd Hoffmann , dri-devel@lists.freedesktop.org Cc: Huang Rui , David Airlie , Daniel Vetter , open list References: <20210204145712.1531203-1-kraxel@redhat.com> <20210204145712.1531203-2-kraxel@redhat.com> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: <1bb54d72-a9b5-0d9d-6f08-b8f9f4abe421@amd.com> Date: Thu, 4 Feb 2021 15:58:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <20210204145712.1531203-2-kraxel@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Originating-IP: [2a02:908:1252:fb60:be8a:bd56:1f94:86e7] X-ClientProxiedBy: AM3PR07CA0078.eurprd07.prod.outlook.com (2603:10a6:207:6::12) To MN2PR12MB3775.namprd12.prod.outlook.com (2603:10b6:208:159::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [IPv6:2a02:908:1252:fb60:be8a:bd56:1f94:86e7] (2a02:908:1252:fb60:be8a:bd56:1f94:86e7) by AM3PR07CA0078.eurprd07.prod.outlook.com (2603:10a6:207:6::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.11 via Frontend Transport; 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What's the background here? Christian. Am 04.02.21 um 15:57 schrieb Gerd Hoffmann: > kobject: '(null)' ((____ptrval____)): is not initialized, yet kobject_put() is being called. > WARNING: CPU: 0 PID: 209 at lib/kobject.c:750 kobject_put+0x3a/0x60 > [ ... ] > Call Trace: > ttm_device_fini+0x133/0x1b0 [ttm] > qxl_ttm_fini+0x2f/0x40 [qxl] > --- > drivers/gpu/drm/ttm/ttm_device.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c > index ac0903c9e60a..b638cbb0bd45 100644 > --- a/drivers/gpu/drm/ttm/ttm_device.c > +++ b/drivers/gpu/drm/ttm/ttm_device.c > @@ -50,7 +50,7 @@ static void ttm_global_release(void) > goto out; > > kobject_del(&glob->kobj); > - kobject_put(&glob->kobj); > +// kobject_put(&glob->kobj); > ttm_mem_global_release(&ttm_mem_glob); > __free_page(glob->dummy_read_page); > memset(glob, 0, sizeof(*glob));