Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp155645imm; Thu, 26 Jul 2018 00:50:50 -0700 (PDT) X-Google-Smtp-Source: AAOMgpfJ03I1OmG8OJL+6H4x8hcLun9KbYlBZ0TlwcxxCKV2BYSLqUghRY4xOdB7zdPv6b03xjEA X-Received: by 2002:a17:902:bf44:: with SMTP id u4-v6mr975050pls.84.1532591450717; Thu, 26 Jul 2018 00:50:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1532591450; cv=none; d=google.com; s=arc-20160816; b=XC9/HIsJvSaksTJ3fK2Z5hq+Q9jX+s9kWSa0yWOPL5zyC+pYEoU9DHUBkwWL4gsehl HYmf93TFfzgw1Z9JVd3PO2rN9IhSJqfNSktbcYLbJFkyFYg8jWZhQ3L6gXN6rwetBRxz oYBhyZp1CNlYRel7DzxexKZ9RWLTJaIpkwR0DbuJ4uwNMA3ixGXK3OeG8ofDKP001w4T ZqLUhNbfbvqDMS3dYO0DXIEBtKGX0IzpROzccqgS/PXFtrAwxSw0rHlv9a9oMP800VYy LfBONxhYwpjwF5Z7RYoaIUMo6O4JK1tPgYlIFElUjiL6WPLlpngHQf6fy/BZ/jbQ3Q9U vVLg== 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 :arc-authentication-results; bh=W2D527QX/wgrPQgTkMSFxQ/VC8W1tapBkHMxJGW9sg4=; b=AZM91ME/Du2OKkl3eKFqEUngaGhosnSl00+u1FN3WINLP/ZMISkS+1l9qvvMkqnePB GV8k2Fn7bCEyCuAfJVNRJSV+9u3OR025GVEFi4W5bQpFwth9G6PBuWXHPf5d8NEMTMr7 +D/PUfhULogVYoArd3oifuqnSAciQGn66rWv4uF1PsyepFipSjBr6W5TrW+pdvL2hc/K ORWyXdX5ts/3+EwPbItUC/JxgXs/4/OvA9CwuHzS0bUGGyj+SAbSjTmKn5bxv5odhQ9d KqP4fz7Nr6mvVc9kV7LT3SqD7kxZse+Ko3LCwVoTLVvYpoMvQ3PNv4O2sV1111njDwoL bErg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e21-v6si699124pgb.131.2018.07.26.00.50.34; Thu, 26 Jul 2018 00:50:50 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729049AbeGZJEn (ORCPT + 99 others); Thu, 26 Jul 2018 05:04:43 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:56328 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728770AbeGZJEl (ORCPT ); Thu, 26 Jul 2018 05:04:41 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w6Q7hbO5002326; Thu, 26 Jul 2018 09:49:01 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2kf9v403t3-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 26 Jul 2018 09:49:01 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id CE6ED34; Thu, 26 Jul 2018 07:48:59 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag3node3.st.com [10.75.127.9]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id A97682903; Thu, 26 Jul 2018 07:48:59 +0000 (GMT) Received: from SFHDAG7NODE2.st.com (10.75.127.20) by SFHDAG3NODE3.st.com (10.75.127.9) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 26 Jul 2018 09:48:59 +0200 Received: from SFHDAG7NODE2.st.com ([fe80::d548:6a8f:2ca4:2090]) by SFHDAG7NODE2.st.com ([fe80::d548:6a8f:2ca4:2090%20]) with mapi id 15.00.1347.000; Thu, 26 Jul 2018 09:48:59 +0200 From: Loic PALLARDY To: Suman Anna , "bjorn.andersson@linaro.org" , "ohad@wizery.com" CC: "linux-remoteproc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Arnaud POULIQUEN" , "benjamin.gaignard@linaro.org" Subject: RE: [PATCH v2 1/1] remoteproc: correct rproc_free_vring() to avoid invalid kernel paging Thread-Topic: [PATCH v2 1/1] remoteproc: correct rproc_free_vring() to avoid invalid kernel paging Thread-Index: AQHUFP2jqyvznuLIQEOFVequ6yz8w6SgfKYAgAC5gfA= Date: Thu, 26 Jul 2018 07:48:59 +0000 Message-ID: <8e943f4d2a1b4e10a8a0756c737d53a8@SFHDAG7NODE2.st.com> References: <1530863212-16584-1-git-send-email-loic.pallardy@st.com> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.51] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-26_02:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGkgU3VtYW4sDQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogU3VtYW4g QW5uYSA8cy1hbm5hQHRpLmNvbT4NCj4gU2VudDogVGh1cnNkYXksIEp1bHkgMjYsIDIwMTggMTI6 MDkgQU0NCj4gVG86IExvaWMgUEFMTEFSRFkgPGxvaWMucGFsbGFyZHlAc3QuY29tPjsgYmpvcm4u YW5kZXJzc29uQGxpbmFyby5vcmc7DQo+IG9oYWRAd2l6ZXJ5LmNvbQ0KPiBDYzogbGludXgtcmVt b3RlcHJvY0B2Z2VyLmtlcm5lbC5vcmc7IGxpbnV4LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc7DQo+ IEFybmF1ZCBQT1VMSVFVRU4gPGFybmF1ZC5wb3VsaXF1ZW5Ac3QuY29tPjsNCj4gYmVuamFtaW4u Z2FpZ25hcmRAbGluYXJvLm9yZw0KPiBTdWJqZWN0OiBSZTogW1BBVENIIHYyIDEvMV0gcmVtb3Rl cHJvYzogY29ycmVjdCBycHJvY19mcmVlX3ZyaW5nKCkgdG8gYXZvaWQNCj4gaW52YWxpZCBrZXJu ZWwgcGFnaW5nDQo+IA0KPiBIaSBMb2ljLA0KPiANCj4gT24gMDcvMDYvMjAxOCAwMjo0NiBBTSwg TG9pYyBQYWxsYXJkeSB3cm90ZToNCj4gPiBJZiBycHJvY19zdGFydCgpIGZhaWxlZCwgcnByb2Nf cmVzb3VyY2VfY2xlYW51cCgpIGlzIGNhbGxlZCB0byBjbGVhbg0KPiA+IGRlYnVnZnMgZW50cmll cywgdGhlbiBhc3NvY2lhdGVkIGlvbW11IG1hcHBpbmdzLCBjYXJ2ZW91dHMgYW5kIHZkZXYuDQo+ ID4gSXNzdWUgb2NjdXJzIHdoZW4gcnByb2NfZnJlZV92cmluZygpIGlzIHRyeWluZyB0byByZXNl dCB2cmluZyByZXNvdXJjZQ0KPiA+IHRhYmxlIGVudHJ5Lg0KPiA+IEF0IHRoaXMgdGltZSwgdGFi bGVfcHRyIGlzIHBvaW50aW5nIG9uIGxvYWRlZCByZXNvdXJjZSB0YWJsZSBhbmQgY2FydmVvdXRz DQo+ID4gYWxyZWFkeSByZWxlYXNlZCwgc28gYWNjZXNzIHRvIGxvYWRlZCByZXNvdXJjZSB0YWJs ZSBpcyBnZW5lcmF0aW5nIGEga2VybmVsDQo+ID4gcGFnaW5nIGVycm9yOg0KPiANCj4gQXJlIHlv dSB1c2luZyBhIGRldmljZSBzcGVjaWZpYyBDTUEgcG9vbCBvciBjYXJ2ZW91dCwgYW5kIGlmIHNv LCB3aGVyZQ0KPiB0aGUgcG9vbCBpcz8gSWYgbm90LCB3aGVyZSBpcyB0aGUgZGVmYXVsdCBDTUEg cG9vbD8gSSBhbSB0cnlpbmcgdG8NCj4gcmVwcm9kdWNlIHRoZSBpc3N1ZSBvbiBteSBwbGF0Zm9y bSB3aXRoIHRoZSBzdGFydCBmYWlsdXJlIGFzIHlvdQ0KPiBzdWdnZXN0ZWQsIGJ1dCBoYXZlbid0 IHNlZW4gaXQgc28gZmFyLiBUaGF0IHNhaWQsIEkgaGF2ZSBzZWVuIHRoZSBleGFjdA0KPiBzYW1l IGNyYXNoIHdoZW4gdXNpbmcgSGlnaE1FTSBDTUEgcG9vbHMgb24gbXkgZG93bnN0cmVhbSBrZXJu ZWwNCj4gd2hlbg0KPiBzdG9wcGluZyB0aGUgcHJvY2Vzc29yLCBhbmQgdGhlIHJvb3QgY2F1c2Ug aXMgZXNzZW50aWFsbHkgdGhlIHNhbWUgYXMNCj4gd2hhdCB5b3Ugc3VtbWFyaXplZCBoZXJlLiBU aGUgaXNzdWUgd2FzIHByZXNlbnQgd2l0aCBMb3dNZW0gcG9vbHMgYXMNCj4gd2VsbCwgYnV0IGdv dCBtYXNrZWQgYmVjYXVzZSBvZiB0aGUga2VybmVsIGxpbmVhciBtYXBwaW5nLg0KDQpJIGhhdmUg YSBjYXJ2ZW91dCBkZWNsYXJlZCBpbiBmaXJtd2FyZSByZXNvdXJjZSB0YWJsZSBmb3IgY28tcHJv Y2Vzc29yIGNvZGUgYW5kIGRhdGEsIGFuZCBzdCBkcml2ZXIgaGFzIGEgc3BlY2lmaWMgDQpyZXNl cnZlZCBtZW1vcnkgcmVnaW9uIHRvIGZpdCBmaXggYWRkcmVzcyBzcGFjZSByZXF1ZXN0ZWQgYnkg Y28tcHJvY2Vzc29yLg0KU28gQ1BVIGFjY2VzcyB0byBjb2RlIGFuZCBsb2FkZWQgcmVzb3VyY2Ug dGFibGUgYXJlYSBpcyBncmFudGVkIHRoYW5rcyB0byBhbGxvY2F0aW9uIGRvbmUgYnkgcnByb2Nf aGFuZGxlX2NhcnZlb3V0KCkuDQoNCj4gDQo+ID4NCj4gPiBbICAgMTIuNjk2NTM1XSBVbmFibGUg dG8gaGFuZGxlIGtlcm5lbCBwYWdpbmcgcmVxdWVzdCBhdCB2aXJ0dWFsIGFkZHJlc3MNCj4gZjBm MzU3Y2MNCj4gPiBbICAgMTIuNjk2NTQwXSBwZ2QgPSAocHRydmFsKQ0KPiA+IFsgICAxMi42OTY1 NDJdIFtmMGYzNTdjY10gKnBnZD02ZDJkMDgxMSwgKnB0ZT0wMDAwMDAwMCwgKnBwdGU9MDAwMDAw MDANCj4gPiBbICAgMTIuNjk2NTU4XSBJbnRlcm5hbCBlcnJvcjogT29wczogODA3IFsjMV0gU01Q IEFSTQ0KPiA+IFsgICAxMi42OTY1NjNdIE1vZHVsZXMgbGlua2VkIGluOiBycG1zZ19jb3JlIHY0 bDJfbWVtMm1lbQ0KPiB2aWRlb2J1ZjJfZG1hX2NvbnRpZyBzdGlfZHJtIHY0bDJfY29tbW9uIHZp ZGENCj4gPiBbICAgMTIuNjk2NTk4XSBDUFU6IDEgUElEOiA0OCBDb21tOiBrd29ya2VyLzE6MSBU YWludGVkOiBHICAgICAgICBXDQo+IDQuMTguMC1yYzItMDAwMTgtZzMxNzBmZGQtOA0KPiA+IFsg ICAxMi42OTY2MDJdIEhhcmR3YXJlIG5hbWU6IFNUaSBTb0Mgd2l0aCBGbGF0dGVuZWQgRGV2aWNl IFRyZWUNCj4gPiBbICAgMTIuNjk2NjI1XSBXb3JrcXVldWU6IGV2ZW50cyByZXF1ZXN0X2Zpcm13 YXJlX3dvcmtfZnVuYw0KPiA+IFsgICAxMi42OTY2NTldIFBDIGlzIGF0IHJwcm9jX2ZyZWVfdnJp bmcrMHg4NC8weGJjIFtyZW1vdGVwcm9jXQ0KPiA+IFsgICAxMi42OTY2NjddIExSIGlzIGF0IHJw cm9jX2ZyZWVfdnJpbmcrMHg3MC8weGJjIFtyZW1vdGVwcm9jXQ0KPiA+DQo+ID4gVGhpcyBwYXRj aCBwcm9wb3NlcyB0byBzaW1wbHkgcmVtb3ZlIHJlc2V0IG9mIHJlc291cmNlIHRhYmxlIHZyaW5n IGVudHJpZXMsDQo+ID4gYXMgZmlybXdhcmUgYW5kIHJlc291cmNlIHRhYmxlIGFyZSByZWxvYWRl ZCBhdCBlYWNoIHJwcm9jIGJvb3QuDQo+ID4gcnByb2NfdHJpZ2dlcl9yZWNvdmVyeSgpIG5vdCBp bXBhY3RlZCBhcyByZXNvdXJjZXMgbm90IHRvdWNoZWQgZHVyaW5nDQo+IHJlY292ZXJ5DQo+ID4g cHJvY2VkdXJlLg0KPiANCj4gQW5kIGVycm9yIHJlY292ZXJ5IGRvZXNuJ3Qgd29yayBmb3IgbWUg YWZ0ZXIgdGhlIHJwcm9jX3N0YXJ0LCBzdG9wIGdvdA0KPiBpbnRyb2R1Y2VkLg0KUmVjb3Zlcnkg bm8gYXZhaWxhYmxlIG9uIEIyMjYwLCBidXQgSSdsbCB0ZXN0IGl0IG9uIGFub3RoZXIgcGxhdGZv cm0gdGhpcyB3ZWVrDQoNClJlZ2FyZHMsDQpMb2ljDQo+IA0KPiByZWdhcmRzDQo+IFN1bWFuDQo+ IA0KPiA+DQo+ID4gU2lnbmVkLW9mZi1ieTogTG9pYyBQYWxsYXJkeSA8bG9pYy5wYWxsYXJkeUBz dC5jb20+DQo+ID4gLS0tDQo+ID4gQ2hhbmdlcyBmcm9tIFYxOiB0eXBvIGZpeGVzIGluIGNvbW1p dCBtZXNzYWdlDQo+ID4NCj4gPiAgZHJpdmVycy9yZW1vdGVwcm9jL3JlbW90ZXByb2NfY29yZS5j IHwgNiAtLS0tLS0NCj4gPiAgMSBmaWxlIGNoYW5nZWQsIDYgZGVsZXRpb25zKC0pDQo+ID4NCj4g PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9yZW1vdGVwcm9jL3JlbW90ZXByb2NfY29yZS5jDQo+IGIv ZHJpdmVycy9yZW1vdGVwcm9jL3JlbW90ZXByb2NfY29yZS5jDQo+ID4gaW5kZXggYTk2MDlkOS4u OWE4YjQ3YyAxMDA2NDQNCj4gPiAtLS0gYS9kcml2ZXJzL3JlbW90ZXByb2MvcmVtb3RlcHJvY19j b3JlLmMNCj4gPiArKysgYi9kcml2ZXJzL3JlbW90ZXByb2MvcmVtb3RlcHJvY19jb3JlLmMNCj4g PiBAQCAtMjg5LDE2ICsyODksMTAgQEAgdm9pZCBycHJvY19mcmVlX3ZyaW5nKHN0cnVjdCBycHJv Y192cmluZyAqcnZyaW5nKQ0KPiA+ICB7DQo+ID4gIAlpbnQgc2l6ZSA9IFBBR0VfQUxJR04odnJp bmdfc2l6ZShydnJpbmctPmxlbiwgcnZyaW5nLT5hbGlnbikpOw0KPiA+ICAJc3RydWN0IHJwcm9j ICpycHJvYyA9IHJ2cmluZy0+cnZkZXYtPnJwcm9jOw0KPiA+IC0JaW50IGlkeCA9IHJ2cmluZy0+ cnZkZXYtPnZyaW5nIC0gcnZyaW5nOw0KPiA+IC0Jc3RydWN0IGZ3X3JzY192ZGV2ICpyc2M7DQo+ ID4NCj4gPiAgCWRtYV9mcmVlX2NvaGVyZW50KHJwcm9jLT5kZXYucGFyZW50LCBzaXplLCBydnJp bmctPnZhLCBydnJpbmctDQo+ID5kbWEpOw0KPiA+ICAJaWRyX3JlbW92ZSgmcnByb2MtPm5vdGlm eWlkcywgcnZyaW5nLT5ub3RpZnlpZCk7DQo+ID4NCj4gPiAtCS8qIHJlc2V0IHJlc291cmNlIGVu dHJ5IGluZm8gKi8NCj4gPiAtCXJzYyA9ICh2b2lkICopcnByb2MtPnRhYmxlX3B0ciArIHJ2cmlu Zy0+cnZkZXYtPnJzY19vZmZzZXQ7DQo+ID4gLQlyc2MtPnZyaW5nW2lkeF0uZGEgPSAwOw0KPiA+ IC0JcnNjLT52cmluZ1tpZHhdLm5vdGlmeWlkID0gLTE7DQo+ID4gIH0NCj4gPg0KPiA+ICBzdGF0 aWMgaW50IHJwcm9jX3ZkZXZfZG9fcHJvYmUoc3RydWN0IHJwcm9jX3N1YmRldiAqc3ViZGV2KQ0K PiA+DQoNCg==