Error in messages

[Patricio A. Bruna]

What means this error? 

Nov 14 15:09:47 balanceador varnishd[28858]: Child (28859) died signal=6 
Nov 14 15:09:47 balanceador varnishd[28858]: Child (28859) Panic message: Missing errorhandling code in cnt_lookup(), cache_center.c line 606: Condition((p) != 0) not true. thread = (cache-worker)sp = 0x2ab2cff98008 { fd = 317, id = 317, xid = 1867396264, client = 200.113.161.41:63013, step = STP_LOOKUP, handling = HASH, ws = 0x2ab2cff98078 { overflow id = "sess", {s,f,r,e} = {0x2ab2cff987b0,,+8164,(nil),+8192}, }, worker = 0x2ab2ce001c00 { }, vcl = { srcname = { "/etc/varnish/default.vcl", "Default", }, }, }, 


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Patricio Bruna V. 
IT Linux Ltda. 
http://www.it-linux.cl 
Fono : (+56-2) 333 0578 - Chile 
Fono: (+54-11) 6632 2760 - Argentina 
Móvil : (+56-09) 8827 0342 
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