From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC6C8191F8F for ; Tue, 26 Nov 2024 19:28:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.58.86.151 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732649319; cv=none; b=M0H7kUy/YKHhokMHfm06sGP/TuxVZepHQ31S5/EMh+nIgixO3PmAart8O2PqohcgdPFGqtgc0n1uqFSoJuIuLs+9WOTQ7zHHq8OO8z0/jDXEQX1hXeVuLNHDSOECP66prjEaEHeZ8EZJBPL8mGG6a4uMYz2JW3rR5gb7QkCGRB8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732649319; c=relaxed/simple; bh=+GBE5B062FR9g4J90SX5hO01IVxZBZ3fP+Lf3aTOPYg=; h=From:To:CC:Subject:Date:Message-ID:References:In-Reply-To: MIME-Version:Content-Type; b=lQMbztQUcMnc/+WvuUUwuCvWUnqtKbTQVfzqFhAB5OHf2ewrWD+Rrwd+vpdFzDICZMwo4bZuz33O+Swrrl5FSTaVyv98443zQH+92j4LF3nP0OixKp2U8H68076YhKEAPfRf0hlOjLssVtqXfF8TBa1U0yy3e8bjinvNzFP/FoI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ACULAB.COM; spf=pass smtp.mailfrom=aculab.com; arc=none smtp.client-ip=185.58.86.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ACULAB.COM Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aculab.com Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-59-NBi9ce6hPiKDt7GQ4gr72w-1; Tue, 26 Nov 2024 19:28:29 +0000 X-MC-Unique: NBi9ce6hPiKDt7GQ4gr72w-1 X-Mimecast-MFC-AGG-ID: NBi9ce6hPiKDt7GQ4gr72w Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Tue, 26 Nov 2024 19:28:22 +0000 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Tue, 26 Nov 2024 19:28:22 +0000 From: David Laight To: 'Tingmao Wang' , Mikel Rychliski , "Thomas Gleixner" , Ingo Molnar , "Borislav Petkov" , Dave Hansen , "x86@kernel.org" , "H. Peter Anvin" CC: "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] x86: Fix off-by-one error in __access_ok Thread-Topic: [PATCH] x86: Fix off-by-one error in __access_ok Thread-Index: AQHbP5/0s5XuBE8Q5Uy4b3TdFy2hrrLJ8xtg Date: Tue, 26 Nov 2024 19:28:22 +0000 Message-ID: <88d4fc24d4c0449196bf462d54bd6fa2@AcuMS.aculab.com> References: <20241109210313.440495-1-mikel@mikelr.com> <4d5abd25-57c1-4233-a34a-3167a114dcc8@maowtm.org> In-Reply-To: <4d5abd25-57c1-4233-a34a-3167a114dcc8@maowtm.org> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: qUHcoPCrvDz9Rya0Ywdtd8j4fVGfTwyOLDFwB4C36Qs_1732649308 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 RnJvbTogVGluZ21hbyBXYW5nIDxtQG1hb3d0bS5vcmc+DQo+IFNlbnQ6IDI2IE5vdmVtYmVyIDIw MjQgMDE6MDkNCj4gDQo+IEkgaGl0IGFuIGlzc3VlIHdpdGggdXNpbmcgZ2RiIChhbmQgZXZlbnR1 YWxseSBtb3JlKSBvbiBhIHN5c3RlbSB3aXRoIDlwDQo+IGFzIHJvb3RmcyB3aGljaCBJIGV2ZW50 dWFsbHkgcm9vdC1jYXVzZWQgdG8gdGhpcywgc28gSSdtIGp1c3QgcG9zdGluZw0KPiBoZXJlIGZv ciByZWZlcmVuY2UgLyBhbm90aGVyIHRlc3RpbmcgZGF0YXBvaW50LCBzaW5jZSBJIGNvdWxkbid0 IGZpbmQNCj4gYW55IG90aGVyIG1lbnRpb25zIG9mIHRoaXMgZXJyb3IgZWxzZXdoZXJlIGFuZCB0 aGlzIGlzIGluIHRoZSBsYXRlc3QNCj4gc3RhYmxlIGtlcm5lbCAoNi4xMiAvIDYuMTIuMSkuIEFw b2xvZ2llcyBpbiBhZHZhbmNlIHRoYXQgSSBtaWdodCBub3QgYmUNCj4gb2ZmZXJpbmcgbXVjaCBl bHNlIHVzZWZ1bCwgYnV0IEkgY2FuIGNvbmZpcm0gdGhhdCBhcHBseWluZyB0aGlzIHBhdGNoDQo+ IGZpeGVzIGl0Lg0KDQpJIGJlbGlldmUgTGludXMgaGFzIGFwcGxpZWQgYSBkaWZmZXJlbnQgcGF0 aCB0aGF0IGRvZXM6DQotLS0gYS9hcmNoL3g4Ni9rZXJuZWwvY3B1L2NvbW1vbi5jDQorKysgYi9h cmNoL3g4Ni9rZXJuZWwvY3B1L2NvbW1vbi5jDQpAQCAtMjM4OSwxMiArMjM4OSwxMiBAQCB2b2lk IF9faW5pdCBhcmNoX2NwdV9maW5hbGl6ZV9pbml0KHZvaWQpDQogCWFsdGVybmF0aXZlX2luc3Ry dWN0aW9ucygpOw0KIA0KIAlpZiAoSVNfRU5BQkxFRChDT05GSUdfWDg2XzY0KSkgew0KLQkJdW5z aWduZWQgbG9uZyBVU0VSX1BUUl9NQVggPSBUQVNLX1NJWkVfTUFYLTE7DQorCQl1bnNpZ25lZCBs b25nIFVTRVJfUFRSX01BWCA9IFRBU0tfU0laRV9NQVg7DQoNClByb2JhYmx5IG5vdCBiZWVuIGJh Y2stcG9ydGVkIHlldC4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lk ZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0K UmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==