[erlang-questions] Causes of - Slogan: erl_child_setup closed?

Lukas Larsson <>
Mon Feb 20 08:38:08 CET 2017


Hello,

You get that message if the erl_child_setup process for some reason
terminates. The erl_child_setup process is responsible for doing the setup
of any external port program that gets started, i.e. os:cmd/open_port.

The only "normal" reason that I have found so far for erl_child_setup to
exit is if the Linux OOM killed decides to terminate it. Besides that all
terminations should be considered bugs in erl_child_setup.

Do you have any core file from erl_child_setup? Any printouts to stderr?

Lukas

On Sun, Feb 19, 2017 at 5:05 PM, Grant Murphy <>
wrote:

> Hi,
>
> I'm seeing an intermittent crash on a Ubuntu 16.04 host, Erlang version -
> 19.2.3.  The erl_crashdump contains "erl_child_setup closed".
>
> Tracked the error to here https://github.com/erlang/otp/
> blob/1526eaead833b3bdcd3555a12e2af62c359e7868/erts/emulator/
> sys/unix/sys_drivers.c#L1776, but not entirely sure what could be causing
> this particular failure.
>
> Can anybody shed some light on the likely cause of this error message?
>
> Thanks,
>
> - Grant
>
> _______________________________________________
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> 
> http://erlang.org/mailman/listinfo/erlang-questions
>
>
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