varnish-4.1.8 Assert error in vmod_round_robin__fini()

Paramanathan Nirosan niro at
Mon Oct 1 06:54:00 UTC 2018

Hi Team,

Varnish child dies when frequently. Below is the output. What
could be the issue?


Last panic at: Mon, 01 Oct 2018 05:33:26 GMT

"Assert error in vmod_round_robin__fini(), round_robin.c line 109:

  Condition((rr) != NULL) not true.

thread = (cache-main)

version = varnish-4.1.8 revision d266ac5c6

ident =

now = 20382411.898999 (mono), 1538372001.216609 (real)


  0x434842: pan_ic+0x192


  0x7f9bef8ec0dd: [0x7f9bef8ec0dd]

  0x43f820: vcl_cancel_load+0xb0

  0x440634: ccf_config_load+0x1a4

  0x7f9c008fded1: [0x7f9c008fded1]

  0x7f9c008fe30b: [0x7f9c008fe30b]

  0x7f9c00903888: [0x7f9c00903888]

  0x7f9c008fefa3: [0x7f9c008fefa3]

  0x41b181: CLI_Run+0x41


It's running with below daemon options.

"-s malloc,30G -p thread_pool_stack=128K -t 120"

# varnishd -V

varnishd (varnish-4.1.8 revision d266ac5c6)

Copyright (c) 2006 Verdens Gang AS

Copyright (c) 2006-2015 Varnish Software AS




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