https://bugs.freedesktop.org/show_bug.cgi?id=75279

--- Comment #15 from Frederic Bezies <fredbezies-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #14)
> Frederic, would you be able to use top to identify the program using 100%
> cpu, attach a debugger (gdb attach <pid>) while hanging, and get a stack
> trace, please?

Already done in mozilla bugzilla bug report.

Adding this log here.

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