Bug 214572

Summary:

REGRESSION (r264242): [ macOS ] imported/w3c/web-platform-tests/wasm/jsapi/constructor/instantiate.any.html is a flaky crash

Product:

WebKit

Reporter:

Karl Rackler <rackler>

Component:

New Bugs

Assignee:

Geoffrey Garen <ggaren>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

ews-watchlist, ggaren, keith_miller, mark.lam, msaboff, rackler, saam, tzagallo, webkit-bot-watchers-bugzilla, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Patch	none
Patch	none
Patch	none

Description Karl Rackler 2020-07-20 13:54:45 PDT

Description:
imported/w3c/web-platform-tests/wasm/jsapi/constructor/instantiate.any.html
This has been a flaky crash.  This has appeared on Catalina WK2 debug once on 07/19/20.  Then appears on Catalina rWK1 release starting 07/14/20 crashing two days consecutively.  Another instance appears as a flaky crash on Mojave WK1 debug and release for 3 days in a row starting 07/15/20.

I can reproduce this for r264242, but not for r264241.

REPRODUCTION STEPS
run-webkit-tests --iterations 500 --exit-after-n-failures 3 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f --root imported/w3c/web-platform-tests/wasm/jsapi/constructor/instantiate.any.html

History:
https://results.webkit.org/?limit=50000&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwasm%2Fjsapi%2Fconstructor%2Finstantiate.any.html&platform=mac

Crash Log:
Thread 31 Crashed:: Wasm Worklist Helper Thread
0   libobjc.A.dylib               	0x00007fff5cdc039d objc_msgSend + 29
1   com.apple.CoreFoundation      	0x00007fff325744a9 CFEqual + 621
2   com.apple.CoreFoundation      	0x00007fff32570215 CFBasicHashAddValue + 1205
3   com.apple.CoreFoundation      	0x00007fff325a2f6d CFRunLoopAddTimer + 477
4   com.apple.JavaScriptCore      	0x000000010bee42d8 WTF::RunLoop::TimerBase::start(WTF::Seconds, bool) + 200
5   com.apple.JavaScriptCore      	0x000000010cc50c67 JSC::JSRunLoopTimer::Manager::scheduleTimer(JSC::JSRunLoopTimer&, WTF::Seconds) + 695

Comment 1 Radar WebKit Bug Importer 2020-07-20 13:56:11 PDT

<rdar://problem/65846269>

Comment 2 Geoffrey Garen 2020-07-20 14:57:03 PDT

Created attachment 404762 [details]
Patch

Comment 3 Geoffrey Garen 2020-07-20 15:05:25 PDT

Created attachment 404765 [details]
Patch

Comment 4 Geoffrey Garen 2020-07-20 15:16:08 PDT

Created attachment 404766 [details]
Patch

Comment 5 EWS 2020-07-20 16:36:06 PDT

Committed r264635: <https://trac.webkit.org/changeset/264635>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 404766 [details].