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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id v23sm359350otj.61.2020.02.10.11.30.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2020 11:30:58 -0800 (PST) From: Kees Cook To: Ingo Molnar Subject: [PATCH v3 3/7] x86/elf: Disable automatic READ_IMPLIES_EXEC for 64-bit address spaces Date: Mon, 10 Feb 2020 11:30:45 -0800 Message-Id: <20200210193049.64362-4-keescook@chromium.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200210193049.64362-1-keescook@chromium.org> References: <20200210193049.64362-1-keescook@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200210_113101_882248_E67F4DF9 X-CRM114-Status: GOOD ( 12.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kees Cook , Jann Horn , Catalin Marinas , x86@kernel.org, Hector Marco-Gisbert , Russell King , Will Deacon , linux-kernel@vger.kernel.org, Jason Gunthorpe , linux-kselftest@vger.kernel.org, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org V2l0aCBtb2Rlcm4geDg2IDY0LWJpdCBlbnZpcm9ubWVudHMsIHRoZXJlIHNob3VsZCBuZXZlciBi ZSBhIG5lZWQgZm9yCmF1dG9tYXRpYyBSRUFEX0lNUExJRVNfRVhFQywgYXMgdGhlIGFyY2hpdGVj dHVyZSBpcyBpbnRlbmRlZCB0byBhbHdheXMKYmUgZXhlY3V0ZS1iaXQgYXdhcmUgKGFzIGluLCB0 aGUgZGVmYXVsdCBtZW1vcnkgcHJvdGVjdGlvbiBzaG91bGQgYmUgTlgKdW5sZXNzIGEgcmVnaW9u IGV4cGxpY2l0bHkgcmVxdWVzdHMgdG8gYmUgZXhlY3V0YWJsZSkuCgpUaGVyZSB3ZXJlIHZlcnkg b2xkIHg4Nl82NCBzeXN0ZW1zIHRoYXQgbGFja2VkIHRoZSBOWCBiaXQsIGJ1dCBmb3IgdGhvc2Us CnRoZSBOWCBiaXQgaXMsIG9idmlvdXNseSwgdW5lbmZvcmNlYWJsZSwgc28gdGhlc2UgY2hhbmdl cyBzaG91bGQgaGF2ZQpubyBpbXBhY3Qgb24gdGhlbS4KClN1Z2dlc3RlZC1ieTogSGVjdG9yIE1h cmNvLUdpc2JlcnQgPGhlY21hcmdpQHVwdi5lcz4KU2lnbmVkLW9mZi1ieTogS2VlcyBDb29rIDxr ZWVzY29va0BjaHJvbWl1bS5vcmc+Ci0tLQogYXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmggfCA0 ICsrLS0KIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCgpk aWZmIC0tZ2l0IGEvYXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmggYi9hcmNoL3g4Ni9pbmNsdWRl L2FzbS9lbGYuaAppbmRleCBhNzAzNTA2NTM3N2MuLmM5YjdiZTBiY2FkMyAxMDA2NDQKLS0tIGEv YXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmgKKysrIGIvYXJjaC94ODYvaW5jbHVkZS9hc20vZWxm LmgKQEAgLTI4Nyw3ICsyODcsNyBAQCBleHRlcm4gdTMyIGVsZl9od2NhcDI7CiAgKiDCoCDCoCDC oCDCoCDCoCDCoCDCoENQVTogfCBsYWNrcyBOWCogwqB8IGhhcyBOWCwgaWEzMiDCoCDCoCB8IGhh cyBOWCwgeDg2XzY0IHwKICAqIEVMRjogwqAgwqAgwqAgwqAgwqAgwqAgwqB8IMKgIMKgIMKgIMKg IMKgIMKgfCDCoCDCoCDCoCDCoCDCoCDCoCDCoCDCoCDCoHwgwqAgwqAgwqAgwqAgwqAgwqAgwqAg wqB8CiAgKiAtLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tfC0tLS0tLS0tLS0tLS0tLS0t LXwtLS0tLS0tLS0tLS0tLS0tfAotICogbWlzc2luZyBHTlVfU1RBQ0sgfCBleGVjLWFsbCDCoCB8 IGV4ZWMtYWxsIMKgIMKgIMKgIMKgIHwgZXhlYy1hbGwgwqAgwqAgwqAgfAorICogbWlzc2luZyBH TlVfU1RBQ0sgfCBleGVjLWFsbCDCoCB8IGV4ZWMtYWxsIMKgIMKgIMKgIMKgIHwgZXhlYy1ub25l wqAgwqAgwqAgfAogICogR05VX1NUQUNLID09IFJXWCDCoHwgZXhlYy1zdGFjayB8IGV4ZWMtc3Rh Y2sgwqAgwqAgwqAgfCBleGVjLXN0YWNrIMKgIMKgIHwKICAqIEdOVV9TVEFDSyA9PSBSVyDCoCB8 IGV4ZWMtbm9uZSDCoHwgZXhlYy1ub25lIMKgIMKgIMKgIMKgfCBleGVjLW5vbmUgwqAgwqAgwqB8 CiAgKgpAQCAtMzAzLDcgKzMwMyw3IEBAIGV4dGVybiB1MzIgZWxmX2h3Y2FwMjsKICAqCiAgKi8K ICNkZWZpbmUgZWxmX3JlYWRfaW1wbGllc19leGVjKGV4LCBleGVjdXRhYmxlX3N0YWNrKQlcCi0J KGV4ZWN1dGFibGVfc3RhY2sgPT0gRVhTVEFDS19ERUZBVUxUKQorCShtbWFwX2lzX2lhMzIoKSAm JiBleGVjdXRhYmxlX3N0YWNrID09IEVYU1RBQ0tfREVGQVVMVCkKIAogc3RydWN0IHRhc2tfc3Ry dWN0OwogCi0tIAoyLjIwLjEKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVs QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9s aXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==