[Webkit-unassigned] [Bug 247843] [GLIB] Deadlock in Layout, API and WebDriver tests in debug bots

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247843

Carlos Alberto Lopez Perez <clopez at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.webkit.org/sho
                   |                            |w_bug.cgi?id=248533

--- Comment #6 from Carlos Alberto Lopez Perez <clopez at igalia.com> ---
(In reply to Lauro Moura from comment #5)
> After some manual testing on the debug external bot:
> 
> - This issue is not debug-specific, also happens to release builds on the
> external host and started happening on the WPE release tester too, which is
> a standalone machine.
> - Bisecting consistently shows this issue starting in move to the FDO-SDK
> 22.08 (255085 at main)
> - The SDK upgrade bumped Python from 3.9.9 to 3.10.6, which might be related.
> 
> Could not reproduce yet on my desktop or with a subset of the tests other
> than the full suite.

I landed this the other day...

[GTK][WPE][run-webkit-tests] layout tests are deadlocking when a test crashes due to unhandled BrokenPipeError
https://bugs.webkit.org/show_bug.cgi?id=248533


What I found is that when running the layout tests with one worker (export NUMBER_OF_PROCESSORS=1) it helps to debug this issues, because with one worker you will see the python exception that need to be fixed, otherwise with several workers the exception is hidden and you get a deadlock.

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