231246 2021-10-05 11:55:56 -0700 [ iOS15 ] TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision is a constant crash 2021-10-07 09:42:00 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=231366 InRadar P2 Normal --- 1 ehutchison achristensen achristensen ap cdumez ddkilzer ehutchison webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1800687 0 ehutchison 2021-10-05 11:55:56 -0700 TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision is a constant crash on iOS15 since r282887. History: https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision Build: https://build.webkit.org/#/builders/28/builds/3324 Crash: TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision 2021-10-05 07:41:09.990 TestWebKitAPI[62822:10550457] Writing analzed variants. Child process terminated with signal 11: Segmentation fault Unable to reproduce crash locally. Test timed out on r283552 using run-api-tests --ios-simulator --iterations 25 TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision. 1800691 1 webkit-bug-importer 2021-10-05 11:59:33 -0700 <rdar://problem/83897435> 1800817 2 ap 2021-10-05 15:46:57 -0700 *** Bug 231245 has been marked as a duplicate of this bug. *** 1800819 3 ap 2021-10-05 15:47:59 -0700 > is a constant crash on iOS15 since r282887. That's just the first time the test ran, so definitely unrelated. We had this test crash (even every time) on other queues earlier than that. 1800905 4 440316 achristensen 2021-10-05 17:37:54 -0700 Created attachment 440316 Patch 1800910 5 440316 cdumez 2021-10-05 17:54:08 -0700 Comment on attachment 440316 Patch It is a mystery indeed but the new code looks good to me. 1800916 6 440316 ddkilzer 2021-10-05 18:27:54 -0700 Comment on attachment 440316 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=440316&action=review > Tools/TestWebKitAPI/Tests/WebKitCocoa/ResourceLoadStatistics.mm:-572 > - NSArray<NSString *> *messages = [delegate waitForMessages:2]; The other way to fix this is to make this a RetainPtr<NSArray<NSString *>> so that the lifetime of the object is guaranteed for the duration of this method. Under ARC, `messages` would be +1 retained until the end of the method automatically. With MRR, you either have to use manual -retain/-release, or you have to use RetainPtr<> to ensure the lifetime of the object. You could also change -waitForMessages: to return a RetainPtr<>, then you wouldn't need to autorelease the return value. 1800935 7 ews-feeder 2021-10-05 20:47:23 -0700 Committed r283599 (242551@main): <https://commits.webkit.org/242551@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 440316. 1801086 8 achristensen 2021-10-06 08:27:19 -0700 It stopped crashing. Internal builds seem to be passing. Open source builds seem to be timing out. I can't reproduce the time out. 1801426 9 ehutchison 2021-10-06 16:56:36 -0700 Was able to occasionally reproduce locally on r283657 using run-api-tests --ios-simulator --iterations 100 --release --child-processes 1 --no-build --verbose TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision. The test also timed out on a few iterations of the above test with --debug instead of --release. Test suite failed Timeout TestWebKitAPI.ResourceLoadStatistics.DataTaskIdentifierCollision Testing completed, Exit status: 3 1801451 10 ap 2021-10-06 17:39:58 -0700 > Open source builds seem to be timing out. Is there a bug tracking that? 1801630 11 ehutchison 2021-10-07 09:42:00 -0700 (In reply to Alexey Proskuryakov from comment #10) > > Open source builds seem to be timing out. > > Is there a bug tracking that? Created new bug for timeout: https://bugs.webkit.org/show_bug.cgi?id=231366 440316 2021-10-05 17:37:54 -0700 2021-10-05 20:47:24 -0700 Patch bug-231246-20211005173754.patch text/plain 8624 achristensen U3VidmVyc2lvbiBSZXZpc2lvbjogMjgzNTY4CmRpZmYgLS1naXQgYS9Ub29scy9DaGFuZ2VMb2cg Yi9Ub29scy9DaGFuZ2VMb2cKaW5kZXggMWI5N2RkMDlkMzFhMzY0M2JjYjFjNjI1MzE5YjExODc0 ZWZhODc3ZC4uNTUxN2RjNzUyNzI0OWEyMTMxYjE4YzY0NDAzYzNhMGEyYjBlNWFmZCAxMDA2NDQK LS0tIGEvVG9vbHMvQ2hhbmdlTG9nCisrKyBiL1Rvb2xzL0NoYW5nZUxvZwpAQCAtMSwzICsxLDMy IEBACisyMDIxLTEwLTA1ICBBbGV4IENocmlzdGVuc2VuICA8YWNocmlzdGVuc2VuQHdlYmtpdC5v cmc+CisKKyAgICAgICAgWyBpT1MxNSBdIFRlc3RXZWJLaXRBUEkuUmVzb3VyY2VMb2FkU3RhdGlz dGljcy5EYXRhVGFza0lkZW50aWZpZXJDb2xsaXNpb24gaXMgYSBjb25zdGFudCBjcmFzaAorICAg ICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MjMxMjQ2CisKKyAg ICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAgRm9yIGEgcmVhc29u IHRoYXQgaXMgbXlzdGVyaW91cyB0byBtZSwgdGhpcyB0ZXN0IHdhcyB0aW1pbmcgb3V0IG9uIGlP 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