183067 2018-02-22 16:01:19 -0800 validateStackAccess should not validate if the offset is within the stack bounds 2018-02-26 12:42:45 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 saam saam benjamin commit-queue fpizlo ggaren gskachkov jfbastien keith_miller mark.lam msaboff rmorisset ticaiolima webkit-bug-importer ysuzuki oldest_to_newest 1401583 0 saam 2018-02-22 16:01:19 -0800 For example, we may emit code that only reaches such a stack load conditionally. It's natural to emit such code. This happens in the case of GetMyArgumentByVal, which will branch on the argument count before issuing a load. 1401584 1 saam 2018-02-22 16:01:53 -0800 <rdar://problem/37749988> 1401585 2 334482 saam 2018-02-22 16:07:42 -0800 Created attachment 334482 patch 1402135 3 334482 mark.lam 2018-02-26 12:17:20 -0800 Comment on attachment 334482 patch r=me 1402141 4 334482 commit-queue 2018-02-26 12:42:43 -0800 Comment on attachment 334482 patch Clearing flags on attachment: 334482 Committed r229036: <https://trac.webkit.org/changeset/229036> 1402142 5 commit-queue 2018-02-26 12:42:45 -0800 All reviewed patches have been landed. Closing bug. 334482 2018-02-22 16:07:42 -0800 2018-02-26 12:42:43 -0800 patch b-backup.diff text/plain 3319 saam SW5kZXg6IEpTVGVzdHMvQ2hhbmdlTG9nCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIEpTVGVzdHMvQ2hhbmdlTG9n CShyZXZpc2lvbiAyMjg5MzgpCisrKyBKU1Rlc3RzL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpA QCAtMSwzICsxLDE3IEBACisyMDE4LTAyLTIyICBTYWFtIEJhcmF0aSAgPHNiYXJhdGlAYXBwbGUu Y29tPgorCisgICAgICAgIHZhbGlkYXRlU3RhY2tBY2Nlc3Mgc2hvdWxkIG5vdCB2YWxpZGF0ZSBp ZiB0aGUgb2Zmc2V0IGlzIHdpdGhpbiB0aGUgc3RhY2sgYm91bmRzCisgICAgICAgIGh0dHBzOi8v YnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xODMwNjcKKyAgICAgICAgPHJkYXI6Ly9w cm9ibGVtLzM3NzQ5OTg4PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgor CisgICAgICAgICogc3RyZXNzL2RvbnQtdmFsaWRhdGUtc3RhY2stb2Zmc2V0LWluLWIzLWJlY2F1 c2UtaXQtbWlnaHQtYmUtZ3VhcmRlZC1ieS1jb250cm9sLWZsb3cuanM6IEFkZGVkLgorICAgICAg ICAoYXNzZXJ0KToKKyAgICAgICAgKHRlc3QuYSk6CisgICAgICAgICh0ZXN0LmIpOgorICAgICAg ICAodGVzdCk6CisKIDIwMTgtMDItMjAgIFNhYW0gQmFyYXRpICA8c2JhcmF0aUBhcHBsZS5jb20+ CiAKICAgICAgICAgREZHOjpWYXJhcmdzRm9yd2FyZGluZ1BoYXNlIHNob3VsZCBlbGltaW5hdGUg Z2V0dGluZyBhcmd1bWVudCBsZW5ndGgKSW5kZXg6IEpTVGVzdHMvc3RyZXNzL2RvbnQtdmFsaWRh dGUtc3RhY2stb2Zmc2V0LWluLWIzLWJlY2F1c2UtaXQtbWlnaHQtYmUtZ3VhcmRlZC1ieS1jb250 cm9sLWZsb3cuanMKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PQotLS0gSlNUZXN0cy9zdHJlc3MvZG9udC12YWxpZGF0ZS1z dGFjay1vZmZzZXQtaW4tYjMtYmVjYXVzZS1pdC1taWdodC1iZS1ndWFyZGVkLWJ5LWNvbnRyb2wt Zmxvdy5qcwkobm9uZXhpc3RlbnQpCisrKyBKU1Rlc3RzL3N0cmVzcy9kb250LXZhbGlkYXRlLXN0 YWNrLW9mZnNldC1pbi1iMy1iZWNhdXNlLWl0LW1pZ2h0LWJlLWd1YXJkZWQtYnktY29udHJvbC1m bG93LmpzCSh3b3JraW5nIGNvcHkpCkBAIC0wLDAgKzEsMjYgQEAKK2Z1bmN0aW9uIGFzc2VydChi KSB7CisgICAgaWYgKCFiKQorICAgICAgICB0aHJvdyBuZXcgRXJyb3I7Cit9Citub0lubGluZShh c3NlcnQpOworCitmdW5jdGlvbiB0ZXN0KCkgeworICAgIGZ1bmN0aW9uIGEoYTEsIGEyLCBhMywg Li4ucmVzdCkgeworICAgICAgICByZXR1cm4gW3Jlc3QubGVuZ3RoLCByZXN0WzBdLCByZXN0WzEw XV07CisgICAgfQorCisgICAgZnVuY3Rpb24gYiguLi5yZXN0KSB7CisgICAgICAgIHJldHVybiBh LmFwcGx5KG51bGwsIHJlc3QpOworICAgIH0KKyAgICBub0lubGluZShiKTsKKworICAgIGZvciAo bGV0IGkgPSAwOyBpIDwgMTIwMDA7IGkrKykgeworICAgICAgICBiKCk7CisgICAgICAgIGxldCBy ID0gYSh1bmRlZmluZWQsIDApOworICAgICAgICBhc3NlcnQoclswXSA9PT0gMCk7CisgICAgICAg IGFzc2VydChyWzFdID09PSB1bmRlZmluZWQpOworICAgICAgICBhc3NlcnQoclsyXSA9PT0gdW5k ZWZpbmVkKTsKKyAgICB9Cit9CisKK3Rlc3QoKTsKSW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29y ZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxv ZwkocmV2aXNpb24gMjI4OTMzKQorKysgU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwko d29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE5IEBACisyMDE4LTAyLTIyICBTYWFtIEJhcmF0aSAg PHNiYXJhdGlAYXBwbGUuY29tPgorCisgICAgICAgIHZhbGlkYXRlU3RhY2tBY2Nlc3Mgc2hvdWxk IG5vdCB2YWxpZGF0ZSBpZiB0aGUgb2Zmc2V0IGlzIHdpdGhpbiB0aGUgc3RhY2sgYm91bmRzCisg ICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xODMwNjcKKyAg ICAgICAgPHJkYXI6Ly9wcm9ibGVtLzM3NzQ5OTg4PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5P Qk9EWSAoT09QUyEpLgorCisgICAgICAgIFRoZSB2YWxpZGF0aW9uIHJ1bGUgd2FzIHNheWluZyB0 aGF0IGFueSBsb2FkIGZyb20gdGhlIHN0YWNrIG11c3QgYmUKKyAgICAgICAgd2l0aGluIHRoZSBz dGFjayBib3VuZHMgb2YgdGhlIGZyYW1lLiBIb3dldmVyLCBpdCdzIG5hdHVyYWwgZm9yIGEgdXNl cgorICAgICAgICBvZiBCMyB0byBlbWl0IGNvZGUgdGhhdCBtYXkgYmUgb3V0c2lkZSBvZiBCMydz IHN0YWNrIGJvdW5kcywgYnV0IGd1YXJkCisgICAgICAgIHN1Y2ggYSBsb2FkIHdpdGggYSBicmFu Y2guIFRoZSBGVEwgZG9lcyBleGFjdGx5IHRoaXMgd2l0aCBHZXRNeUFyZ3VtZW50QnlWYWwuCisg ICAgICAgIEIzIGlzIHdyb25nIHRvIGFzc2VydCB0aGF0IHRoaXMgaXMgYSBzdGF0aWMgcHJvcGVy dHkgYWJvdXQgYWxsIHN0YWNrIGxvYWRzLgorCisgICAgICAgICogYjMvQjNWYWxpZGF0ZS5jcHA6 CisKIDIwMTgtMDItMjIgIE1hcmsgTGFtICA8bWFyay5sYW1AYXBwbGUuY29tPgogCiAgICAgICAg IFJlZmFjdG9yIE1hY3JvQXNzZW1ibGVyIGNvZGUgdG8gaW1wcm92ZSByZXVzZSBhbmQgZXh0ZW5z aWJpbGl0eS4KSW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9iMy9CM1ZhbGlkYXRlLmNwcAo9 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09Ci0tLSBTb3VyY2UvSmF2YVNjcmlwdENvcmUvYjMvQjNWYWxpZGF0ZS5jcHAJKHJl dmlzaW9uIDIyODkzMykKKysrIFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9iMy9CM1ZhbGlkYXRlLmNw cAkod29ya2luZyBjb3B5KQpAQCAtNjA4LDEwICs2MDgsNyBAQCBwcml2YXRlOgogICAgICAgICBp ZiAoIXNsb3RCYXNlKQogICAgICAgICAgICAgcmV0dXJuOwogCi0gICAgICAgIFN0YWNrU2xvdCog c3RhY2sgPSBzbG90QmFzZS0+c2xvdCgpOwotCiAgICAgICAgIFZBTElEQVRFKG1lbW9yeS0+b2Zm c2V0KCkgPj0gMCwgKCJBdCAiLCAqdmFsdWUpKTsKLSAgICAgICAgVkFMSURBVEUobWVtb3J5LT5v ZmZzZXQoKSArIG1lbW9yeS0+YWNjZXNzQnl0ZVNpemUoKSA8PSBzdGFjay0+Ynl0ZVNpemUoKSwg KCJBdCAiLCAqdmFsdWUpKTsKICAgICB9CiAgICAgCiAgICAgTk9fUkVUVVJOX0RVRV9UT19DUkFT SCB2b2lkIGZhaWwoCg==