Repeated panic in obj_getmethods()

[Pål Hermunn Johansen]

Hello Mark,

Can you include a list of VMODs you are using? Also, did you change
any of the parameters from the default? The last question can be
answered by running

varnishadm param.show

Best,
Pål


2017-10-18 4:17 GMT+02:00 Mark Staudinger <mark.staudinger at nyi.net>:
> Hi Folks,
>
> I've seen this panic recently, twice, on two companion servers running
> Varnish-4.1.8 on FreeBSD-11.0
>
> % varnishd -V
> varnishd (varnish-4.1.8 revision d266ac5c6)
> Copyright (c) 2006 Verdens Gang AS
> Copyright (c) 2006-2015 Varnish Software AS
>
> % uname -a
> FreeBSD hostname 11.0-RELEASE-p2 FreeBSD 11.0-RELEASE-p2 #0: Mon Oct 24
> 06:55:27 UTC 2016
> root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
>
> Unfortunately I do not have the full backtrace, but here's what I do have.
>
> Oct 16 12:24:47 hostname varnishd[50931]: Child (50932) Last panic at: Mon,
> 16 Oct 2017 12:24:47 GMT "Assert error in obj_getmethods(),
> cache/cache_obj.c line 55:   Condition((oc->stobj->stevedore) != NULL) not
> true. thread = (cache-worker) version = varnish-4.1.8 revision d266ac5c6
> ident =
> FreeBSD,11.0-RELEASE-p2,amd64,-junix,-sfile,-smalloc,-sfile,-hcritbit,kqueue
> now = 3794380.754560 (mono), 1508156686.857677 (real) Backtrace:   0x433a38:
> varnishd   0x431821: varnishd   0x431f62: varnishd   0x425f9d: varnishd
> 0x41eb0c: varnishd   0x420d51: varnishd   0x41e8db: varnishd   0x41e36a:
> varnishd   0x426155: varnishd busyobj = 0xbf88dbbb60 {   ws = 0xbf88dbbbf8 {
> id = \"bo\",     {s,f,r,e} = {0xbf88dbdab0,+4712,0x0,+57480},   },   refcnt
> = 2,   retries = 0, failed = 1, state = 1,   flags = {do_esi, is_gzip},
> http_conn = 0xbf88dbde30 {     fd = 153,     doclose = RX_BODY,     ws =
> 0xbf88dbbbf8,     {rxbuf_b, rxbuf_e} = {0xbf88dbdee0, 0xbf88dbe134},
> {pipeline_b, pipeline_e} = {0xbf88dbe134, 0xbf88dbea65},
> Oct 16 12:24:47 hostname kernel: xbf88dbea65},
>
> Varnishd process uptime was near-identical on both servers, and the panics
> occurred at around the same time on both machines, which could potentially
> indicate that the panic was caused either by a particular request, and/or
> some resource-related issue.  Time between panics was approximately 19 days.
>
> I would welcome any advice about known possible causes for this particular
> assertion failing!
>
> Best Regards,
> Mark Staudinger
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