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Peter Anvin" , Andrew Morton , Thomas Gleixner , linux-arm-kernel Subject: Re: [PATCH 2/2] x86/mmap: handle worst-case heap randomization in mmap_base Thread-Topic: [PATCH 2/2] x86/mmap: handle worst-case heap randomization in mmap_base Thread-Index: AQHU2PmhiRz/TsWOLEOmeVSaHu1ISKYKLoIAgBXMf4CAHUjGgA== Date: Mon, 15 Apr 2019 16:03:34 +0000 Message-ID: <34381CFC-A90F-4979-9802-2BA0E6539C68@amazon.com> References: <20190312173248.13490-1-alisaidi@amazon.com> <20190312173248.13490-3-alisaidi@amazon.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.162.93] Content-Type: text/plain; charset="utf-8" Content-ID: <6AAB9B7BD5FCCF47AB714C3009212253@amazon.com> 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 DQoNCu+7v09uIDMvMjcvMTksIDI6NTIgUE0sICJsaW51eC1hcm0ta2VybmVsIG9uIGJlaGFsZiBv ZiBLZWVzIENvb2siIDxsaW51eC1hcm0ta2VybmVsLWJvdW5jZXNAbGlzdHMuaW5mcmFkZWFkLm9y ZyBvbiBiZWhhbGYgb2Yga2Vlc2Nvb2tAY2hyb21pdW0ub3JnPiB3cm90ZToNCg0KICAgIEFkZGlu ZyBzb21lIG1vcmUgcGVvcGxlIHRvIENDLi4uIHdoYXQgZG8gcGVvcGxlIHRoaW5rIGFib3V0IHRo aXMNCiAgICBtb3Zpbmcgb2YgdGhlIGJyayB0byBFTEZfRVRfRFlOX0JBU0UgaW4gdGhpcyBjb3Ju ZXItY2FzZT8gQW55dGhpbmcNCiAgICB0aGF0IHdvcmtlZCBiZWZvcmUgc2hvdWxkIHN0aWxsIHdv cmsgKGkuZS4gdGhlIHVsdGltYXRlbHktbGF1bmNoZWQNCiAgICBiaW5hcnkgYWxyZWFkeSBoYWQg dGhlIGJyayB2ZXJ5IGZhciBmcm9tIGl0cyB0ZXh0LCBzbyB0aGlzIHNob3VsZCBiZQ0KICAgIG5v IGRpZmZlcmVudCBmcm9tIGEgQ09NUEFUX0JSSyBzdGFuZHBvaW50KS4gVGhlIG9ubHkgcmlzayBJ IHNlZSBoZXJlDQogICAgaXMgdGhhdCBpZiBzb21lb25lIHN0YXJ0ZWQgdG8gc3VkZGVubHkgZGVw ZW5kIG9uIHRoZSBlbnRpcmUgbWVtb3J5DQogICAgc3BhY2UgYWJvdmUgdGhlIG1tYXAgcmVnaW9u IGJlaW5nIGF2YWlsYWJsZSB3aGVuIGxhdW5jaGluZyBiaW5hcmllcw0KICAgIHZpYSBhIGRpcmVj dCBsb2FkZXIgZXhlY3MuLi4gd2hpY2ggc2VlbXMgaGlnaGx5IHVubGlrZWx5LCBJJ2QgaG9wZToN CiAgICB0aGlzIHdvdWxkIG1lYW4gYSBiaW5hcnkgd291bGQgbm90IHdvcmsgd2hlbiBleGVjZWQg bm9ybWFsbHkuDQoNCktlZXMnIHByb3Bvc2FsIGFkZHJlc3NlcyB0aGUgaXNzdWUgZm9yIG1lLiBB bnlvbmUgaGF2ZSBjb25jZXJucyBvbiB0aGlzIHByb3Bvc2VkIHNvbHV0aW9uPw0KDQpBbGkNCg0K DQo=