146297 2015-06-24 16:48:10 -0700 Address Sanitizer does not play well with memcpy in JSC::MachineThreads::tryCopyOtherThreadStack. 2017-09-14 10:48:13 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=176874 InRadar P2 Normal --- 1 keith_miller webkit-unassigned aj355 commit-queue keith_miller webkit-bug-importer oldest_to_newest 1104540 0 keith_miller 2015-06-24 16:48:10 -0700 WebViews inside apps built with Address sanitizer will sometimes crash in JSC::MachineThreads::tryCopyOtherThreadStack. 1104550 1 255530 keith_miller 2015-06-24 17:04:58 -0700 Created attachment 255530 Patch 1104598 2 255530 ap 2015-06-24 22:07:51 -0700 Comment on attachment 255530 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=255530&action=review > Source/JavaScriptCore/heap/MachineStackMarker.cpp:543 > +// Since we cannot blacklist the system memcpy we must use our own naive implementation, There is no context here to understand that blackisting is about ASan. Please update the comment to make it clear that this is needed to use ASan with both instrumented and non-instrumented builds. 1104677 3 255563 keith_miller 2015-06-25 10:30:50 -0700 Created attachment 255563 Patch Updated comments do note that blacklisting was related to ASan. 1104683 4 keith_miller 2015-06-25 10:50:04 -0700 rdar://problem/21330174 1104684 5 255563 msaboff 2015-06-25 11:00:00 -0700 Comment on attachment 255563 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=255563&action=review r=me with a couple of comments. > Source/JavaScriptCore/ChangeLog:3 > + Address Sanitizer finds a problem in JavaScriptCore. Change the bug title to reflect the issue. > Source/JavaScriptCore/heap/MachineStackMarker.cpp:522 > +void copyMemory(void*, const void*, size_t); Don't think this declaration serves much purpose with the definition below. 1104689 6 255565 keith_miller 2015-06-25 11:31:02 -0700 Created attachment 255565 Patch Removed the declaration for copyMemory changed the patch name to be more descriptive. 1104691 7 255565 commit-queue 2015-06-25 12:23:13 -0700 Comment on attachment 255565 Patch Clearing flags on attachment: 255565 Committed r185957: <http://trac.webkit.org/changeset/185957> 1104692 8 commit-queue 2015-06-25 12:23:17 -0700 All reviewed patches have been landed. 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