[Varnish] #1820: Assert error in SES_Delete

[Varnish]

#1820: Assert error in SES_Delete
--------------------------+----------------------
 Reporter:  llavaud       |       Type:  defect
   Status:  new           |   Priority:  normal
Milestone:                |  Component:  varnishd
  Version:  4.1.0-TP1     |   Severity:  normal
 Keywords:  assert error  |
--------------------------+----------------------
 {{{
 webcache20:~# varnishadm panic.show
 Last panic at: Tue, 17 Nov 2015 13:21:47 GMT
 Assert error in SES_Delete(), cache/cache_session.c line 575:
   Condition(now >= sp->t_open) not true.
 thread = (cache-worker)
 version = varnish-4.1.0-tp1 revision 0e4e1bc
 ident = Linux,3.2.0-4-amd64,x86_64,-junix,-sfile,-smalloc,-hcritbit,epoll
 Backtrace:
   0x4343a4: pan_ic+0x134
   0x43bde0: ses_handle
   0x44f2c3: HTTP1_Session+0x853
   0x43a841: SES_Proto_Req+0x61
   0x44947a: WRK_Thread+0x48a
   0x4499eb: pool_thread+0x2b
   0x7f3902124b50: libpthread.so.0(+0x6b50) [0x7f3902124b50]
   0x7f3901e6e95d: libc.so.6(clone+0x6d) [0x7f3901e6e95d]
 req = 0x7f1fe0d86020 {
   sp = (nil), vxid = 0,  step = R_STP_RESTART,
   req_body = R_BODY_INIT,
   restarts = 0, esi_level = 0,
   ws = 0x7f1fe0d86220 { BAD_MAGIC(0x00000000) },
   },
   http[req] = {

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1820>
Varnish <https://varnish-cache.org/>
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