[Varnish] #1638: 82b29b1 Assert error in vbf_stp_startfetch() : Condition(bo->doclose == SC_NULL) not true.

[Varnish]

#1638: 82b29b1 Assert error in vbf_stp_startfetch() : Condition(bo->doclose ==
SC_NULL) not true.
----------------------+-------------------
 Reporter:  slink     |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:  Later
Component:  varnishd  |    Version:  trunk
 Severity:  major     |   Keywords:
----------------------+-------------------
 Seen in production repeatedly since Nov 16

 {{{
 Nov 16 03:12:04 fw01 varnishd[24913]: Child (24914) Panic message:
 Assert error in vbf_stp_startfetch(), cache/cache_fetch.c line 248:
   Condition(bo->doclose == SC_NULL) not true.
 thread = (cache-worker)
 version = varnish-trunk revision 82b29b1
 ident =
 Linux,3.10.0-123.9.2.el7.x86_64,x86_64,-smalloc,-smalloc,-hcritbit,epoll
 Backtrace:
   0x4324b4: pan_ic+0xf4
   0x422b95: vbf_fetch_thread+0x1d65
   0x434ca8: Pool_Work_Thread+0x358
   0x4476c2: WRK_Thread+0x102
   0x433a3b: pool_thread+0x2b
   0x7f31c2287df3: /lib64/libpthread.so.0(+0x7df3) [0x7f31c2287df3]
   0x7f31c1fae01d: /lib64/libc.so.6(clone+0x6d) [0x7f31c1fae01d]
   busyobj = 0x7f30f01d0e50 {
     ws = 0x7f30f01d0f10 {
       id = "bo",
       {s,f,r,e} = {0x7f30f01d2db8,+800,(nil),+57488},
     },
   refcnt = 2
   retries = 1
   failed = 1
   state = 1
     is_do_pass
     is_uncacheable
     is_is_gzip
 }}}

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1638>
Varnish <https://varnish-cache.org/>
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