varnish-4.1.8 Assert error in vmod_round_robin__fini()

[Paramanathan Nirosan]

Hi Team,


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


panic.show

200

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 =
Linux,3.10.0-693.11.6.el7.x86_64,x86_64,-junix,-smalloc,-smalloc,-hcritbit,epoll

now = 20382411.898999 (mono), 1538372001.216609 (real)

Backtrace:

  0x434842: pan_ic+0x192

  0x7f9beed2ea49: libvmod_directors.so(vmod_round_robin__fini+0x59)
[0x7f9beed2ea49]

  0x7f9bef8ec0dd: vgc.so(+0x40dd) [0x7f9bef8ec0dd]

  0x43f820: vcl_cancel_load+0xb0

  0x440634: ccf_config_load+0x1a4

  0x7f9c008fded1: libvarnish.so(+0x6ed1) [0x7f9c008fded1]

  0x7f9c008fe30b: libvarnish.so(+0x730b) [0x7f9c008fe30b]

  0x7f9c00903888: libvarnish.so(VLU_Fd+0xd8) [0x7f9c00903888]

  0x7f9c008fefa3: libvarnish.so(VCLS_Poll+0x143) [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

Regards,

Niro

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