[Varnish] #827: varnish child died in object_cmp

[Varnish]

#827: varnish child died in object_cmp
----------------------+-----------------------------------------------------
 Reporter:  dmyaho    |       Owner:  phk                
     Type:  defect    |      Status:  new                
 Priority:  high      |   Milestone:  Varnish 2.1 release
Component:  varnishd  |     Version:  2.1.3              
 Severity:  major     |    Keywords:  Assert error       
----------------------+-----------------------------------------------------
 Varnish 2.1.3
 Linux web-1 2.6.18-194.11.1.el5PAE #1 SMP Tue Jul 27 06:02:35 EDT 2010
 i686 i686 i386 GNU/Linux

 The child process died once every ~5 days.  Could someone please take a
 look? Please let me know if you need further information. Thanks!

 The messages below is from our /var/log/messages file:

 Dec  6 18:30:52 web-1 /d/varnish[22365]: Child (7262) died signal=6
 Dec  6 18:30:52 web-1 /d/varnish[22365]: Child (7262) Panic message:
 Assert error in object_cmp(), cache_expire.c line 380:#012
 Condition(((aa))->magic == (0x4d301302)) not true.#012thread = (cache-
 worker)#012ident =
 Linux,2.6.18-194.11.1.el5PAE,i686,-smalloc,-hcritbit,epoll#012Backtrace:#012
 0x806cb5c: pan_ic+cc#012  0x80612a6: object_cmp+56#012  0x769510:
 /usr/local/lib/libvarnish.so.1(binheap_delete+0x2e0) [0x769510]#012
 0x806156e: EXP_NukeOne+13e#012 0x8085b46: STV_alloc+f6#012  0x8063871:
 FetchBody+5b1#012  0x8059f77: cnt_fetch+737#012  0x805b92a:
 CNT_Session+44a#012  0x806f5df: wrk_do_cnt_sess+ef#012 0x806e661:
 wrk_thread_real+341#012sp = 0xaf937004 {#012  fd = 21, id = 21, xid =
 893998447,#012  client = 74.7.178.42:64276,#012  step = STP_FETCH,#012
 handling = deliver,#012  err_code = 200, err_reason = (null),#012
 restarts = 0, esis = 0#012  ws = 0xaf93704c { #012    id = "sess",#012
 {s,f,r,e} = {0xaf9377dc,+772,(nil),+16384},#012  },#012  http[req] = {#012
 ws = 0xaf93704c[sess]#012      "GET",#012
 "/index.php?title=MediaWiki:Monobook.css&usemsgcache=yes&ctype=text%2Fcss&smaxage=18000&action=raw&maxage=18000",#012
 "HTTP/1.1",#012      "Accept: */*",#012      "Referer:
 http://www.mywebsite.org/index.php/page",#012      "Accept-Language: en-
 US",#012      "User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT
 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR
 3.0.30729; Media Center PC 6.0; MDDR; Zune 4.0; .NET4.0C; .NET4.0E)",#012
 "Host: www.mywebsite.org",#012 "Connection: Keep-Alive",#012      "Cookie:
 __utma=221264669.1516477775.1286286826.1286286826.1286286826.1;
 __utmz=221264669.1286286826.1.1.utmcsr=google.com|utmccn=(referral)|utmcmd=referral|utmcct=/",#012
 "X-Forwarded-For: 74.7.178.42",#012      "Accept-Encoding: gzip",#012
 },#012  worker = 0xb7f8b194 {#012    ws = 0xb7f8b2ac { #012      id =
 "wrk",#012      {s,f,r,e} = {0xb7f85150,+1472,(nil),+16384},#012    },#012
 http[bereq] = {#012      ws = 0xb7f8b2ac[wrk]#012
 Dec  6 18:30:52 web-1 /d/varnish[22365]: child (17885) Started

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Ticket URL: <http://varnish-cache.org/trac/ticket/827>
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