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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id g14sm3227306pfb.131.2020.03.26.23.48.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2020 23:48:23 -0700 (PDT) From: Kees Cook To: Borislav Petkov Subject: [PATCH v5 3/6] x86/elf: Disable automatic READ_IMPLIES_EXEC for 64-bit address spaces Date: Thu, 26 Mar 2020 23:48:17 -0700 Message-Id: <20200327064820.12602-4-keescook@chromium.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200327064820.12602-1-keescook@chromium.org> References: <20200327064820.12602-1-keescook@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200326_234825_538402_16FB512F X-CRM114-Status: GOOD ( 11.02 ) 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 , linux-kernel@vger.kernel.org, Jason Gunthorpe , Jason Gunthorpe , kernel-hardening@lists.openwall.com, Will Deacon , 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+ClJldmlld2VkLWJ5OiBKYXNvbiBHdW50aG9ycGUgPGpnZ0Bt ZWxsYW5veC5jb20+Ci0tLQogYXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmggfCA0ICsrLS0KIDEg ZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0 IGEvYXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmggYi9hcmNoL3g4Ni9pbmNsdWRlL2FzbS9lbGYu aAppbmRleCAzOTdhMWM3NDQzM2UuLjQ1MmJlZWQ3ODkyYiAxMDA2NDQKLS0tIGEvYXJjaC94ODYv aW5jbHVkZS9hc20vZWxmLmgKKysrIGIvYXJjaC94ODYvaW5jbHVkZS9hc20vZWxmLmgKQEAgLTI4 Nyw3ICsyODcsNyBAQCBleHRlcm4gdTMyIGVsZl9od2NhcDI7CiAgKiDCoCDCoCDCoCDCoCDCoCDC oCAgICDCoENQVTogfCBsYWNrcyBOWCogwqB8IGhhcyBOWCwgaWEzMiDCoCDCoCB8IGhhcyBOWCwg eDg2XzY0IHwKICAqIEVMRjogwqAgwqAgwqAgwqAgICAgwqAgwqAgwqB8IMKgIMKgIMKgIMKgIMKg IMKgfCDCoCDCoCDCoCDCoCDCoCDCoCDCoCDCoCDCoHwgwqAgwqAgwqAgwqAgwqAgwqAgwqAgwqB8 CiAgKiAtLS0tLS0tLS0tLS0tLS0tLS0tLS18LS0tLS0tLS0tLS0tfC0tLS0tLS0tLS0tLS0tLS0t LXwtLS0tLS0tLS0tLS0tLS0tfAotICogbWlzc2luZyBQVF9HTlVfU1RBQ0sgfCBleGVjLWFsbCDC oCB8IGV4ZWMtYWxsIMKgIMKgIMKgIMKgIHwgZXhlYy1hbGwgwqAgwqAgwqAgfAorICogbWlzc2lu ZyBQVF9HTlVfU1RBQ0sgfCBleGVjLWFsbCDCoCB8IGV4ZWMtYWxsIMKgIMKgIMKgIMKgIHwgZXhl Yy1ub25lwqAgwqAgwqAgfAogICogUFRfR05VX1NUQUNLID09IFJXWCDCoHwgZXhlYy1zdGFjayB8 IGV4ZWMtc3RhY2sgwqAgwqAgwqAgfCBleGVjLXN0YWNrIMKgIMKgIHwKICAqIFBUX0dOVV9TVEFD SyA9PSBSVyDCoCB8IGV4ZWMtbm9uZSDCoHwgZXhlYy1ub25lIMKgIMKgIMKgIMKgfCBleGVjLW5v bmUgwqAgwqAgwqB8CiAgKgpAQCAtMzAzLDcgKzMwMyw3IEBAIGV4dGVybiB1MzIgZWxmX2h3Y2Fw MjsKICAqCiAgKi8KICNkZWZpbmUgZWxmX3JlYWRfaW1wbGllc19leGVjKGV4LCBleGVjdXRhYmxl X3N0YWNrKQlcCi0JKGV4ZWN1dGFibGVfc3RhY2sgPT0gRVhTVEFDS19ERUZBVUxUKQorCShtbWFw X2lzX2lhMzIoKSAmJiBleGVjdXRhYmxlX3N0YWNrID09IEVYU1RBQ0tfREVGQVVMVCkKIAogc3Ry dWN0IHRhc2tfc3RydWN0OwogCi0tIAoyLjIwLjEKCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51 eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5v cmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==