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bug#43565: cuirass: Fibers scheduling blocked.


From: Mathieu Othacehe
Subject: bug#43565: cuirass: Fibers scheduling blocked.
Date: Thu, 22 Oct 2020 13:55:21 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)

Hey Ludo!

> ‘process-build-log’ in Cuirass uses ‘read-line/non-blocking’ to read a
> line from the log port of ‘build-derivations&’.  If that really is
> non-blocking (and I think it is), then we should be fine?
>
> We should attach GDB to Cuirass next time to see what’s blocking.

Cuirass is currently hanging probably due to the same issue. I saved a
GDB core dump in /home/mathieu/core.76483.

Could use your help finding the guilty thread :)

Thanks,

Mathieu





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