[Varnish] #1775: Crash loading a VCL in cold state

[Varnish]

#1775: Crash loading a VCL in cold state
----------------------+-------------------
 Reporter:  fgsch     |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:
Component:  varnishd  |    Version:  trunk
 Severity:  normal    |   Keywords:
----------------------+-------------------
 {{{
 ***  v1    1.6 debug| Child (18462) died signal=6 (core dumped)\n
 ***  v1    1.6 debug| Child (18462) Panic message:\n
 ***  v1    1.6 debug| Assert error in VSM_common_free(),
 common/common_vsm.c line 288:\n
 ***  v1    1.6 debug|   Condition((ptr) != 0) not true.\n
 ***  v1    1.6 debug| thread = (cache-main)\n
 ***  v1    1.6 debug| version = varnish-trunk revision f8a913d\n
 ***  v1    1.6 debug| ident =
 Linux,3.16.0-4-amd64,x86_64,-jnone,-smalloc,-smalloc,-hcritbit,epoll\n
 ***  v1    1.6 debug| Backtrace:\n
 ***  v1    1.6 debug|   0x44f3a0: pan_backtrace+0x20\n
 ***  v1    1.6 debug|   0x44f1a3: pan_ic+0x363\n
 ***  v1    1.6 debug|   0x47ba3f: VSM_common_free+0xef\n
 ***  v1    1.6 debug|   0x45fe66: VSM_Free+0x76\n
 ***  v1    1.6 debug|   0x4156de: VBE_Event+0x1be\n
 ***  v1    1.6 debug|   0x4678e1: vcl_BackendEvent+0x121\n
 ***  v1    1.6 debug|   0x463341: vcl_set_state+0x1a1\n
 ***  v1    1.6 debug|   0x467463: VCL_Load+0x483\n
 ***  v1    1.6 debug|   0x466289: ccf_config_load+0xd9\n
 ***  v1    1.6 debug|   0x7f56e8553c34: libvarnish.so(+0xac34)
 [0x7f56e8553c34]\n
 ***  v1    1.6 debug| \n
 ***  v1    1.6 debug| \n
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1775>
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