-bash-4.1$ sudo varnishd -f /etc/varnish/default.vcl -s malloc,1G -T 127.0.0.1: -a 0.0.0.0:8080 -d
Debug: Platform: Linux,2.6.32-573.18.1.el6.x86_64,x86_64,-junix,-smalloc,-smalloc,-hcritbit

200 325
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Varnish Cache CLI 1.0
-----------------------------
Linux,2.6.32-573.18.1.el6.x86_64,x86_64,-junix,-smalloc,-smalloc,-hcritbit
varnish-4.1.9 revision 5024f60c3a51f537279977989b645e983a946e1a

Type 'help' for command list.
Type 'quit' to close CLI session.
Type 'start' to launch worker process.

start
Debug: Child (11305) Started
Error: Child (11305) Pushing vcls failed:
CLI communication error (hdr)
Debug: Stopping Child
Error: Child (11305) died signal=11 (core dumped)
Error: Child (11305) Last panic at: Mon, 20 Nov 2017 21:06:49 GMT
"Assert error in child_signal_handler(), mgt/mgt_child.c line 296:
  Condition(Signal 11 (Segmentation fault) received at (nil) si_code 1) not true.
version = varnish-4.1.9 revision 5024f60c3a51f537279977989b645e983a946e1a
ident = Linux,2.6.32-573.18.1.el6.x86_64,x86_64,-junix,-smalloc,-smalloc,-hcritbit,epoll
now = 17763.388121 (mono), 1511212008.843414 (real)
"
Info: Child (11305) said Child starts
Debug: Child cleanup complete
400 0