[Varnish] #1865: Panic accessing beresp.backend.ip in vcl_backend_error{}

[Varnish]

#1865: Panic accessing beresp.backend.ip in vcl_backend_error{}
----------------------+-------------------
 Reporter:  fgsch     |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:
Component:  varnishd  |    Version:  trunk
 Severity:  normal    |   Keywords:
----------------------+-------------------
 {{{
 ***  v1    4.9 debug| Error: Child (29918) died signal=6 (core dumped)\n
 ***  v1    4.9 debug| Error: Child (29918) Panic at: Wed, 02 Mar 2016
 16:51:44 GMT\n
 ***  v1    4.9 debug| "Assert error in vbe_dir_getip(),
 cache/cache_backend.c line 262:\n
 ***  v1    4.9 debug|   Condition((bo->htc) != NULL) not true.\n
 ***  v1    4.9 debug| errno = 110 (Connection timed out)\n
 ***  v1    4.9 debug| thread = (cache-worker)\n
 ***  v1    4.9 debug| version = varnish-trunk revision 67f2e57\n
 ***  v1    4.9 debug| ident =
 Linux,4.3.0-1-amd64,x86_64,-jnone,-smalloc,-smalloc,-hcritbit,epoll\n
 ***  v1    4.9 debug| Backtrace:\n
 ***  v1    4.9 debug|   0x43bd41: pan_backtrace+0x1d\n
 ***  v1    4.9 debug|   0x43c149: pan_ic+0x2bc\n
 ***  v1    4.9 debug|   0x41213a: vbe_dir_getip+0x155\n
 ***  v1    4.9 debug|   0x41d21e: VDI_GetIP+0x18a\n
 ***  v1    4.9 debug|   0x453cff: VRT_r_beresp_backend_ip+0xe9\n
 ***  v1    4.9 debug|   0x7ffb239fbaf4:
 vgc.so(VGC_function_vcl_backend_error+0x34) [0x7ffb239fbaf4]\n
 ***  v1    4.9 debug|   0x44bf8d: vcl_call_method+0x527\n
 ***  v1    4.9 debug|   0x44c18c: VCL_backend_error_method+0x164\n
 ***  v1    4.9 debug|   0x428a64: vbf_stp_error+0x3c2\n
 ***  v1    4.9 debug|   0x42932e: vbf_fetch_thread+0x3d0\n
 ...
 }}}

 Testcase attached.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1865>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator