[Varnish] #1553: Assert error in VRY_Prep(), cache/cache_vary.c line 228

[Varnish]

#1553: Assert error in VRY_Prep(), cache/cache_vary.c line 228
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 Reporter:  esfourteen      |       Owner:
     Type:  defect          |      Status:  new
 Priority:  normal          |   Milestone:
Component:  varnishd        |     Version:  4.0.1
 Severity:  normal          |  Resolution:
 Keywords:  panic vry_prep  |
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Comment (by esfourteen):

 Full VCL is attached but I removed my backend server hosts. When the panic
 happens the child restarts and stays running for some time, most uptime I
 saw from a child was about 30 minutes before it restarted. The panic is
 always the same and the request identical.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1553#comment:2>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator