195476 2019-03-08 12:42:45 -0800 Randomize the LocalAllocator free list. 2024-12-06 11:36:14 -0800 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED WONTFIX InRadar P2 Normal --- 1 mark.lam mark.lam fpizlo keith_miller msaboff rmorisset saam tzagallo webkit-bug-importer ysuzuki oldest_to_newest 1514135 0 mark.lam 2019-03-08 12:42:45 -0800 <rdar://problem/48722162> 1514137 1 364052 mark.lam 2019-03-08 12:48:22 -0800 Created attachment 364052 proposed patch. 1514139 2 364052 mark.lam 2019-03-08 12:55:07 -0800 Comment on attachment 364052 proposed patch. View in context: https://bugs.webkit.org/attachment.cgi?id=364052&action=review > Source/JavaScriptCore/heap/MarkedBlockInlines.h:308 > // This produces a free list that is ordered in reverse through the block. > // This is fine, since the allocation code makes no assumptions about the > // order of the free list. I should also fix this comment. 1514150 3 364054 mark.lam 2019-03-08 13:28:18 -0800 Created attachment 364054 proposed patch. 1514151 4 fpizlo 2019-03-08 13:29:10 -0800 Since this does not randomize bump pointer, I'm not sure there is much protection here. 1514188 5 364054 mark.lam 2019-03-08 14:34:35 -0800 Comment on attachment 364054 proposed patch. Taking this out of review while I do some A/B testing. 2079695 6 mark.lam 2024-12-06 11:36:14 -0800 We decided we're not going to do this. It is of questionable value. 364052 2019-03-08 12:48:22 -0800 2019-03-08 13:28:18 -0800 proposed patch. bug-195476.patch text/plain 3690 mark.lam SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291 cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkocmV2aXNpb24gMjQyNjUyKQorKysgU291cmNl L0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE2IEBA CisyMDE5LTAzLTA4ICBNYXJrIExhbSAgPG1hcmsubGFtQGFwcGxlLmNvbT4KKworICAgICAgICBS YW5kb21pemUgdGhlIExvY2FsQWxsb2NhdG9yIGZyZWUgbGlzdC4KKyAgICAgICAgaHR0cHM6Ly9i dWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTE5NTQ3NgorICAgICAgICA8cmRhcjovL3By b2JsZW0vNDg3MjIxNjI+CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisK KyAgICAgICAgKiBoZWFwL01hcmtlZEJsb2NrSW5saW5lcy5oOgorICAgICAgICAoSlNDOjpNYXJr ZWRCbG9jazo6SGFuZGxlOjpzcGVjaWFsaXplZFN3ZWVwKToKKyAgICAgICAgKiBydW50aW1lL1ZN Lmg6CisgICAgICAgIChKU0M6OlZNOjp3ZWFrUmFuZG9tKToKKwogMjAxOS0wMy0wOCAgWXVzdWtl 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