From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: [PATCH v2 2/7] x86/traps: Poison unused stack pointers in the TSS Date: Wed, 3 May 2017 14:29:26 +0100 Message-ID: <1493818166-10688-1-git-send-email-andrew.cooper3@citrix.com> References: <1493748326-9582-3-git-send-email-andrew.cooper3@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1493748326-9582-3-git-send-email-andrew.cooper3@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Xen-devel Cc: Andrew Cooper , Jan Beulich List-Id: xen-devel@lists.xenproject.org VGhpcyBpcyBmb3IgYWRkaXRpb25hbCBkZWZlbmNlLWluLWRlcHRoIGZvbGxvd2luZyBMRFQvR0RU L0lEVCBjb3JydXB0aW9uLgoKSXQgY2F1c2VzIGF0dGVtcHRlZCBjb250cm9sIHRyYW5zZmVycyB0 byByaW5nIDEgb3IgMiAodmlhIGEgY2FsbCBnYXRlKSwgb3IKYXR0ZW1wdHMgdG8gdXNlIElTVCAz IHRocm91Z2ggNyB0byB5aWVsZCAjU1MsIHJhdGhlciB0aGFuIGV4ZWN1dGluZyB3aXRoIGEKc3Rh Y2sgc3RhcnRpbmcgYXQgdGhlIHRvcCBvZiB2aXJ0dWFsIGFkZHJlc3Mgc3BhY2UuCgpFeHByZXNz IHRoZSBUU1Mgc2V0dXAgaW4gdGVybXMgb2Ygc3RydWN0dXJlIGFzc2lnbm1lbnQsIHdoaWNoIHNo b3VsZCBiZSBsZXNzCmZyYWdpbGUgaWYgdGhlIElTVCBpbmRleGVzIG5lZWQgdG8gY2hhbmdlLCBh bmQgaGFzIHRoZSB1c2VmdWwgc2lkZSBlZmZlY3Qgb2YKemVyb2luZyB0aGUgcmVzZXJ2ZWQgZmll bGRzLgoKU2lnbmVkLW9mZi1ieTogQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4 LmNvbT4KLS0tCkNDOiBKYW4gQmV1bGljaCA8SkJldWxpY2hAc3VzZS5jb20+Cgp2MjoKICogUmVh cmFuZ2UgdG8gYXZvaWQgNiBzdHJhaWdodCBhc3NpZ25tZW50cy4KLS0tCiB4ZW4vYXJjaC94ODYv Y3B1L2NvbW1vbi5jIHwgMzEgKysrKysrKysrKysrKysrKysrKysrKystLS0tLS0tLQogMSBmaWxl IGNoYW5nZWQsIDIzIGluc2VydGlvbnMoKyksIDggZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEv eGVuL2FyY2gveDg2L2NwdS9jb21tb24uYyBiL3hlbi9hcmNoL3g4Ni9jcHUvY29tbW9uLmMKaW5k ZXggNmMyNzAwOC4uMmZkYzJmOSAxMDA2NDQKLS0tIGEveGVuL2FyY2gveDg2L2NwdS9jb21tb24u YworKysgYi94ZW4vYXJjaC94ODYvY3B1L2NvbW1vbi5jCkBAIC02MzYsMTQgKzYzNiwyOSBAQCB2 b2lkIGxvYWRfc3lzdGVtX3RhYmxlcyh2b2lkKQogCQkubGltaXQgPSAoSURUX0VOVFJJRVMgKiBz aXplb2YoaWR0X2VudHJ5X3QpKSAtIDEsCiAJfTsKIAotCS8qIE1haW4gc3RhY2sgZm9yIGludGVy cnVwdHMvZXhjZXB0aW9ucy4gKi8KLQl0c3MtPnJzcDAgPSBzdGFja19ib3R0b207Ci0JdHNzLT5i aXRtYXAgPSBJT0JNUF9JTlZBTElEX09GRlNFVDsKLQotCS8qIE1DRSwgTk1JIGFuZCBEb3VibGUg RmF1bHQgaGFuZGxlcnMgZ2V0IHRoZWlyIG93biBzdGFja3MuICovCi0JdHNzLT5pc3RbSVNUX01D RSAtIDFdID0gc3RhY2tfdG9wICsgSVNUX01DRSAqIFBBR0VfU0laRTsKLQl0c3MtPmlzdFtJU1Rf REYgIC0gMV0gPSBzdGFja190b3AgKyBJU1RfREYgICogUEFHRV9TSVpFOwotCXRzcy0+aXN0W0lT VF9OTUkgLSAxXSA9IHN0YWNrX3RvcCArIElTVF9OTUkgKiBQQUdFX1NJWkU7CisJKnRzcyA9IChz dHJ1Y3QgdHNzX3N0cnVjdCl7CisJCS8qIE1haW4gc3RhY2sgZm9yIGludGVycnVwdHMvZXhjZXB0 aW9ucy4gKi8KKwkJLnJzcDAgPSBzdGFja19ib3R0b20sCisKKwkJLyogUmluZyAxIGFuZCAyIHN0 YWNrcyBwb2lzb25lZC4gKi8KKwkJLnJzcDEgPSAweDg2MDAxMTExMTExMTExMTF1bCwKKwkJLnJz cDIgPSAweDg2MDAxMTExMTExMTExMTF1bCwKKworCQkvKgorCQkgKiBNQ0UsIE5NSSBhbmQgRG91 YmxlIEZhdWx0IGhhbmRsZXJzIGdldCB0aGVpciBvd24gc3RhY2tzLgorCQkgKiBBbGwgb3RoZXJz IHBvaXNvbmVkLgorCQkgKi8KKwkJLmlzdCA9IHsKKwkJCVtJU1RfTUNFIC0gMV0gPSBzdGFja190 b3AgKyBJU1RfTUNFICogUEFHRV9TSVpFLAorCQkJW0lTVF9ERiAgLSAxXSA9IHN0YWNrX3RvcCAr IElTVF9ERiAgKiBQQUdFX1NJWkUsCisJCQlbSVNUX05NSSAtIDFdID0gc3RhY2tfdG9wICsgSVNU X05NSSAqIFBBR0VfU0laRSwKKworCQkJW0lTVF9NQVggLi4uIEFSUkFZX1NJWkUodHNzLT5pc3Qp IC0gMV0gPQorCQkJCTB4ODYwMDExMTExMTExMTExMXVsLAorCQl9LAorCisJCS5iaXRtYXAgPSBJ T0JNUF9JTlZBTElEX09GRlNFVCwKKwl9OwogCiAJX3NldF90c3NsZHRfZGVzYygKIAkJZ2R0ICsg VFNTX0VOVFJZLAotLSAKMi4xLjQKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4u b3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK