158761 2016-06-14 15:09:05 -0700 decompose4 return value is unchecked, leading to potentially uninitialized data. 2016-06-17 20:30:24 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified REOPENED https://bugs.webkit.org/show_bug.cgi?id=158816 P2 Normal --- 158896 1 dino dino commit-queue oldest_to_newest 1202342 0 dino 2016-06-14 15:09:05 -0700 decompose4 return value is unchecked, leading to potentially uninitialized data. 1202349 1 dino 2016-06-14 15:13:12 -0700 <rdar://problem/17526268> WebCore::decompose4 returns early (false) without initializing its result argument. Various clients of this method accept the return value without checking the result, using uninitialized memory to perform blending and other calculations. 1202352 2 281289 dino 2016-06-14 15:16:36 -0700 Created attachment 281289 Patch 1202357 3 281289 simon.fraser 2016-06-14 15:27:22 -0700 Comment on attachment 281289 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=281289&action=review > Source/WebCore/platform/graphics/transforms/TransformationMatrix.cpp:366 > + memset(&result, 0, sizeof(result)); > + result.perspectiveW = 1; > + result.scaleX = 1; > + result.scaleY = 1; > + result.scaleZ = 1; Should we just give Decomposed4Type some initializers? 1202362 4 281291 dino 2016-06-14 15:39:32 -0700 Created attachment 281291 Patch 1202363 5 dino 2016-06-14 15:46:07 -0700 Committed r202068: <http://trac.webkit.org/changeset/202068> 1203517 6 ap 2016-06-17 20:25:40 -0700 The test still times out a lot, can't keep tests so unstable. Will roll out. 1203520 7 commit-queue 2016-06-17 20:27:38 -0700 Re-opened since this is blocked by bug 158896 1203528 8 ap 2016-06-17 20:30:24 -0700 Rolled out in <https://trac.webkit.org/r202195>. 281289 2016-06-14 15:16:36 -0700 2016-06-14 15:39:29 -0700 Patch bug-158761-20160614151811.patch text/plain 7073 dino U3VidmVyc2lvbiBSZXZpc2lvbjogMjAyMDIyCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggY2FmMDQzNDE2NzhiNWM5 YTQ3NGM2ZDMzOWFjNGY2ZThmMWMxNTM0NS4uNTBmOWI1MGYwNzMyOTQwMjBlMzhmNjk5ZTc1ZDI5 Njk2NjAxZTBlNiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDI1IEBACisyMDE2LTA2LTE0ICBEZWFu IEphY2tzb24gIDxkaW5vQGFwcGxlLmNvbT4KKworICAgICAgICBkZWNvbXBvc2U0IHJldHVybiB2 YWx1ZSBpcyB1bmNoZWNrZWQsIGxlYWRpbmcgdG8gcG90ZW50aWFsbHkgdW5pbml0aWFsaXplZCBk YXRhLgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTU4 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