[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    |  Resolution:
 Keywords:            |
----------------------+--------------------
Description changed by fgsch:

Old description:

> {{{
> ***  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.

New description:

 {{{
 ***  v1    4.9 debug| Error: Child (28106) died signal=6 (core dumped)\n
 ***  v1    4.9 debug| Error: Child (28106) Panic at: Wed, 02 Mar 2016
 19:03:50 GMT\n
 ***  v1    4.9 debug| "Assert error in VDI_GetIP(), cache/cache_director.c
 line 122:\n
 ***  v1    4.9 debug|   Condition(bo->director_state == DIR_S_HDRS ||
 bo->director_state == DIR_S_BODY) 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 51e92b4\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|   0x43bdc7: pan_backtrace+0x1d\n
 ***  v1    4.9 debug|   0x43c1cf: pan_ic+0x2bc\n
 ***  v1    4.9 debug|   0x41d202: VDI_GetIP+0x16e\n
 ***  v1    4.9 debug|   0x453d85: VRT_r_beresp_backend_ip+0xe9\n
 ***  v1    4.9 debug|   0x7fbb955fba0d:
 vgc.so(VGC_function_vcl_backend_error+0x2d) [0x7fbb955fba0d]\n
 ***  v1    4.9 debug|   0x44c013: vcl_call_method+0x527\n
 ***  v1    4.9 debug|   0x44c212: VCL_backend_error_method+0x164\n
 ***  v1    4.9 debug|   0x428aa5: vbf_stp_error+0x3c2\n
 ***  v1    4.9 debug|   0x42936f: vbf_fetch_thread+0x3d0\n
 ***  v1    4.9 debug|   0x458b2e: Pool_Work_Thread+0x512\n
 ...
 }}}

 Testcase attached.

--

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1865#comment:1>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator