Received: by 2002:a25:ca44:0:0:0:0:0 with SMTP id a65csp43685ybg; Mon, 27 Jul 2020 22:54:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyORDb+B0lKHlv8MQB9UT76Jk3ajTT9LRFD6W/OSZf+6v9riLJTYW3Nwy0ZCqptk3lBuGTy X-Received: by 2002:a17:906:28d7:: with SMTP id p23mr24885105ejd.195.1595915665979; Mon, 27 Jul 2020 22:54:25 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1595915665; cv=none; d=google.com; s=arc-20160816; b=wHhhdyJAQmq9bV+JaGQAAyth+X/0M3JwB8kfuOuRel8d6gCCwsy13WDm+HuXPWSuh9 6jJpreTQdbwAqc9u4Gcg5FkN7SIfZGZsK/5PDJ5xwduibeSO46/ymaihheAF5wKxOsPP MLXoGDwqAnVd3RPCH4IyzSZIjK6qHHU0nN6XmFSCh4uLNadUqkbktbrW8tFGUvb/ZRjx 3npB5KJiN1LhG76KPgmCSgnKCKg5t/61mCseBIqO4v6usttFtGuBIvVEXSJEwQqcHKwL r5ZWcEaDsUHVfblkRv47qA6vUqT40y2FxFfGq73pLNa9pmElid+mFSeZqL1GkrPF+Xti Fbag== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from; bh=ogNm+3yudIsV0OuEYf8AV1qdZvlOL20GXh0PvhJzUeA=; b=CWVKBVueKRJ1UvW83ZPHpHUfhYzwy8leQyi3QbJt1Pq9N/kszWr+gOD4kQVX96Acq4 eQ/oCjOGC6E0rDGVFKM3ZoLq/uwfS0N/F7M3myPpZqCWxSqq5+E+kQfOtR6mo1IvKEkD F7LvilXUnAcZPPRDQH3kfu6M3fLcxEjVtAZLt7DMtaPk/a5trCICtiqwCJRCczxYela9 KN11WaROjcqbLB2jc5tbTMxvyvcy9Klem+aNuz5y3nvvtAIl1wRFkD7kz6Ug1ZbZ4hcM 6AtlH3dmengqjL1K8ZAq7aF9Qp3enpcO0/v+wknIwONd5MKdBGGb0fYTvfuEJ1RJEmEx YZFg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id j12si7607465edn.287.2020.07.27.22.54.03; Mon, 27 Jul 2020 22:54:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726880AbgG1Fxp (ORCPT + 99 others); Tue, 28 Jul 2020 01:53:45 -0400 Received: from ZXSHCAS2.zhaoxin.com ([203.148.12.82]:36589 "EHLO ZXSHCAS2.zhaoxin.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726711AbgG1Fxp (ORCPT ); Tue, 28 Jul 2020 01:53:45 -0400 Received: from zxbjmbx1.zhaoxin.com (10.29.252.163) by ZXSHCAS2.zhaoxin.com (10.28.252.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 28 Jul 2020 13:53:40 +0800 Received: from zxbjmbx1.zhaoxin.com (10.29.252.163) by zxbjmbx1.zhaoxin.com (10.29.252.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 28 Jul 2020 13:53:39 +0800 Received: from zxbjmbx1.zhaoxin.com ([fe80::290a:f538:51e7:1416]) by zxbjmbx1.zhaoxin.com ([fe80::290a:f538:51e7:1416%16]) with mapi id 15.01.1979.003; Tue, 28 Jul 2020 13:53:39 +0800 From: WeitaoWang-oc To: Alex Williamson CC: Alan Stern , Greg KH , "mathias.nyman@linux.intel.com" , "ulf.hansson@linaro.org" , "vkoul@kernel.org" , "hslester96@gmail.com" , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Carsten_Schmid@mentor.com" , "efremov@linux.com" , "Tony W. Wang(XA-RD)" , "Cobe Chen(BJ-RD)" , "Tim Guo(BJ-RD)" , "wwt8723@163.com" Subject: =?gb2312?B?tPC4tDogW1BBVENIXSBVU0I6Rml4IGtlcm5lbCBOVUxMIHBvaW50ZXIgd2hl?= =?gb2312?Q?n_unbind_UHCI_form_vfio-pci?= Thread-Topic: [PATCH] USB:Fix kernel NULL pointer when unbind UHCI form vfio-pci Thread-Index: AQHWYB9U257QN8g5QkeL/njIDTUWtqkTBUEAgAAltoCAAMldgIAAFeWAgAC+AoCAAAr2gIAABd6AgAFUpvCAAGn8AIAF7CVQ Date: Tue, 28 Jul 2020 05:53:39 +0000 Message-ID: <0b5dc3873aca42199f769e82288a2b3b@zhaoxin.com> References: <1595419068-4812-1-git-send-email-WeitaoWang-oc@zhaoxin.com> <20200722124414.GA3153105@kroah.com> <20200722145913.GB1310843@rowland.harvard.edu> <1bf449377e3448bc9c8bc7b64d7b7990@zhaoxin.com> <20200722221817.542971a2@x1.home> <20200723153821.GC1352396@rowland.harvard.edu> <20200723101735.3222c289@w520.home> <20200723163835.GA1357775@rowland.harvard.edu> <11a7a3e67d6c40cd9fd06cd4d6300283@zhaoxin.com> <20200724131708.0a0f3358@x1.home> In-Reply-To: <20200724131708.0a0f3358@x1.home> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.29.8.32] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQpPbiBGcmksIDI0IEp1bCAyMDIwIDE5OjE3OjQ5ICswMDAwIEFsZXggd3JvdGU6DQo+IE9uIEZy aSwgMjQgSnVsIDIwMjAgMTI6NTc6NDkgKzAwMDANCj4gV2VpdGFvV2FuZy1vYyA8V2VpdGFvV2Fu Zy1vY0B6aGFveGluLmNvbT4gd3JvdGU6DQo+IA0KPiA+IE9uIFRodSwgMjMgSnVsIDIwMjAgMTI6 Mzg6MjEgLTA0MDAsIEFsYW4gd3JvdGU6DQo+ID4gPiBPbiBUaHUsIEp1bCAyMywgMjAyMCBhdCAx MDoxNzozNUFNIC0wNjAwLCBBbGV4IFdpbGxpYW1zb24gd3JvdGU6DQo+ID4gPiA+IFRoZSBJT01N VSBncm91cGluZyByZXN0cmljdGlvbiBkb2VzIHNvbHZlIHRoZSBoYXJkd2FyZSBpc3N1ZSwgc28g bG9uZw0KPiA+ID4gPiBhcyBvbmUgZHJpdmVyIGRvZXNuJ3QgYmxpbmRseSBhc3N1bWUgdGhlIGRy aXZlciBwcml2YXRlIGRhdGEgZm9yDQo+ID4gPiA+IGFub3RoZXIgZGV2aWNlIGFuZCBtb2RpZnkg aXQuDQo+ID4gPg0KPiA+ID4gQ29ycmVjdGlvbjogVGhlIElPTU1VIGdyb3VwaW5nIHJlc3RyaWN0 aW9uIHNvbHZlcyB0aGUgaGFyZHdhcmUgaXNzdWUgZm9yDQo+ID4gPiB2ZmlvLXBjaS4gIEl0IHdv bid0IG5lY2Vzc2FyaWx5IGhlbHAgaWYgc29tZSBvdGhlciBkcml2ZXIgY29tZXMgYWxvbmcNCj4g PiA+IGFuZCB3YW50cyB0byBiaW5kIHRvIHRoaXMgaGFyZHdhcmUuDQo+ID4gPg0KPiA+ID4gPiAg IEkgZG8gYWdyZWUgdGhhdCB5b3VyIHNvbHV0aW9uIHdvdWxkDQo+ID4gPiA+IHdvcmssIHJlcXVp cmluZyBhbGwgZGV2aWNlcyBhcmUgdW5ib3VuZCBiZWZvcmUgYW55IGNhbiBiZSBib3VuZCwgYnV0 IGl0DQo+ID4gPiA+IGFsc28gc2VlbXMgZGlmZmljdWx0IHRvIG1hbmFnZS4gIFRoZSBpc3N1ZSBp cyBsYXJnZWx5IHVuaXF1ZSB0byBVU0INCj4gPiA+ID4gQUZBSUsuICBPbiB0aGUgb3RoZXIgaGFu ZCwgZHJpdmVycyBjb29yZGluYXRpbmcgd2l0aCBlYWNoIG90aGVyIHRvDQo+ID4gPiA+IHJlZ2lz dGVyIHRoZWlyIF9wcml2YXRlXyBkYXRhIGFzIHNoYXJlLWFibGUgd2l0aGluIGEgc2V0IG9mIGRy aXZlcnMNCj4gPiA+ID4gc2VlbXMgbGlrZSBhIG11Y2ggbW9yZSBkaXJlY3QgYW5kIGV4cGxpY2l0 IGludGVyYWN0aW9uIGJldHdlZW4gdGhlDQo+ID4gPiA+IGRyaXZlcnMuICBUaGFua3MsDQo+ID4g Pg0KPiA+ID4gWWVzLCB0aGF0IG1ha2VzIHNlbnNlLiAgQnV0IGl0IHdvdWxkIGhhdmUgdG8gYmUg aW1wbGVtZW50ZWQgaW4gdGhlDQo+ID4gPiBkcml2ZXIgY29yZSwgbm90IGluIHBhcnRpY3VsYXIg c3Vic3lzdGVtcyBsaWtlIFVTQiBvciBQQ0kuICBBbmQgaXQgbWlnaHQNCj4gPiA+IGJlIHNlZW4g YXMgb3ZlcmtpbGwsIGdpdmVuIHRoYXQgb25seSBVSENJL09IQ0kvRUhDSSBkZXZpY2VzIHJlcXVp cmUgdGhpcw0KPiA+ID4gc29ydCBvZiBzaGFyaW5nIEFGQUlLLg0KPiA+ID4NCj4gPiA+IEFsc28s IHdoZW4geW91IHRoaW5rIGFib3V0IGl0LCB3aGF0IGZvcm0gd291bGQgc3VjaCBjb29yZGluYXRp b24gYW1vbmcNCj4gPiA+IGRyaXZlcnMgdGFrZT8gIEZyb20geW91ciBkZXNjcmlwdGlvbiwgaXQg c291bmRzIGxpa2UgdGhlIGRyaXZlcnMgd291bGQNCj4gPiA+IGFncmVlIHRvIGF2b2lkIGFjY2Vz c2luZyBlYWNoIG90aGVyJ3MgcHJpdmF0ZSBkYXRhIGlmIHRoZSBwcm9wZXINCj4gPiA+IHJlZ2lz dHJhdGlvbiB3YXNuJ3QgaW4gcGxhY2UuDQo+ID4gPg0KPiA+ID4gT24gdGhlIG90aGVyIGhhbmQs IGEgc3Ryb25nZXIgYW5kIHBlcmhhcHMgbW9yZSByb2J1c3QgYXBwcm9hY2ggd291bGQgYmUNCj4g PiA+IHRvIGVuZm9yY2UgdGhlIGNvbmRpdGlvbiB0aGF0IG5vbi1jb29wZXJhdGluZyBkcml2ZXJz IGFyZSBuZXZlciBib3VuZCB0bw0KPiA+ID4gZGV2aWNlcyBpbiB0aGUgc2FtZSBncm91cCBhdCB0 aGUgc2FtZSB0aW1lLiAgVGhhdCdzIGJhc2ljYWxseSB3aGF0IEknbQ0KPiA+ID4gcHJvcG9zaW5n IGhlcmUgLS0gdGhlIHF1ZXN0aW9uIGlzIHdoZXRoZXIgdGhlIGVuZm9yY2VtZW50IHNob3VsZCBi ZQ0KPiA+ID4gaW5zdGl0dXRlZCBpbiB0aGUga2VybmVsIG9yIHNob3VsZCBtZXJlbHkgYmUgcGFy dCBvZiBhIHN0YW5kYXJkIHByb3RvY29sDQo+ID4gPiBmb2xsb3dlZCBieSB1c2Vyc3BhY2UgZHJp dmVycy4NCj4gPiA+DQo+ID4gPiBHaXZlbiB0aGF0IGl0J3MgY3VycmVudGx5IG5lZWRlZCBpbiBv bmx5IG9uZSBwbGFjZSwgaXQgc2VlbXMgcmVhc29uYWJsZQ0KPiA+ID4gdG8gbGVhdmUgdGhpcyBh cyBhICJnZW50bGVtZW4ncyBhZ3JlZW1lbnQiIGluIHVzZXJzcGFjZSBmb3IgdGhlIHRpbWUNCj4g PiA+IGJlaW5nIGluc3RlYWQgb2YgYWRkaW5nIGl0IHRvIHRoZSBrZXJuZWwuDQo+ID4gPg0KPiA+ DQo+ID4gUHJvdmlkZWQgdGhhdCBFSENJIGFuZCBVSENJIGhvc3QgY29udHJvbGxlciBkZWNsYXJl IG5vdCBzdXBwb3J0IFAyUCBhbmQNCj4gPiBBQ1MuIFNvLCB3ZSBjYW4gYXNzaWduIEVIQ0kgYW5k IFVIQ0kgaG9zdCBjb250cm9sbGVyIHRvIGRpZmZlcmVudCBJT01NVQ0KPiA+IGdyb3VwIHNlcGFy YXRlbHkuIFdlIGFzc2lnbiBFSENJIGhvc3QgY29udHJvbGxlciB0byBob3N0IGFuZCBhc3NpZ24g VUhDSQ0KPiA+IGhvc3QgY29udHJvbGxlciB0byBWTS4gVGhlbiwgZWhjaV9oY2QgZHJpdmVyIGxv YWQvdW5sb2FkIG9wZXJhdGlvbiBpbiBob3N0DQo+ID4gd2lsbCBjYXVzZSB0aGUgc2FtZSBpc3N1 ZSBhcyBkaXNjdXNzZWQNCj4gDQo+IEFuZCB5b3UgaGF2ZSBhbiBleGFtcGxlIG9mIHN1Y2ggYSBk ZXZpY2U/ICBJIGV4cGVjdCB0aGVzZSBkbyBub3QgZXhpc3QsDQo+IG5vciBzaG91bGQgdGhleS4g IEl0IHNlZW1zIGxpa2UgaXQgd291bGQgYmUgYW4gaW1wcm9wZXIgdXNlIG9mIEFDUy4NCj4gVGhh bmtzLA0KDQoNCkluIGtlcm5lbCBzb3VyY2UgY29kZSB0cmVlIGRyaXZlcnMvcGNpL3F1aXJrcy5j LA0KVGhlcmUgaXMgYSBkZXZpY2UgbGlzdCBkZWNsYXJlZCBieSBwY2lfZGV2X2Fjc19lbmFibGVk LiBJbiB3aGljaCBsaXN0LCBzdWNoIGFzIA0KbXVsdGktZnVuY3Rpb24gZGV2aWNlIHdpdGhvdXQg YWNzIGNhcGFiaWxpdHkgbm90IGFsbG93IHBlZXItdG8tcGVlciBiZXd0ZWVuIA0KZnVuY3Rpb25z LiBUaG9zZSBkZXZpY2UgY2FuIGJlIGFzc2lnbiB0byB0byBkaWZmZXJlbnQgSU9NTVUgZ3JvdXAg c2VwYXJhdGVseS4NCg0KVGhuYWtzDQp3ZWl0YW8NCg0K