Bug 218063 – REGRESSION: [ Catalina ] 50+ webrtc test crashes on Catalina Debug

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: WebRTC

[Truitt Savell]

After a commit around r268758 50+ webrtc tests began crashing on Catalina WK2 Debug and around 20 on WK1 Debug. These tests are flaky and we will see runs with 50+ crashes and runs with 1 failure. 

history of runs:
https://build.webkit.org/builders/Apple-Catalina-Debug-WK2-Tests?numbuilds=50

Example:
https://build.webkit.org/builders/Apple-Catalina-Debug-WK2-Tests/builds/7339

This is reproducible on the bots, I am looking to find a test list that can reproduce these to be more specific.

Results:
https://build.webkit.org/results/Apple-Catalina-Debug-WK2-Tests/r268822%20(7339)/results.html

[Radar WebKit Bug Importer]

<rdar://problem/70551805>

[Alexey Proskuryakov]

# Fatal error in: Source/webrtc/rtc_base/operations_chain.h, line 136
# last system error: 0
# Check failed: (&sequence_checker_)->IsCurrent()

It would seem like r268758 only changes GPU Process code, which I think is not supposed to be on in tests. But there are no other potential culprits anywhere near.

[Truitt Savell]

Speculatively reverted https://trac.webkit.org/changeset/268938/webkit to fix this. Bisection seems to have shown this as the regression point though the commit seems very unrelated

[Ryan Haddad]

(In reply to Truitt Savell from comment #3)
> Speculatively reverted https://trac.webkit.org/changeset/268938/webkit to
> fix this. Bisection seems to have shown this as the regression point though
> the commit seems very unrelated
The issue persists, so this commit was not the cause of the crashes.

[youenn fablet]

Marking as configuration changed, please reopen if crash is still happenning.