Assert error in vbf_fetch_thread() (Varnish 4.0.2)

[Daniel]

Hi again,

Our Varnish died with this in the log:

I found https://www.varnish-cache.org/trac/ticket/1596, but don't know 
if it is the same error?

Oct 17 11:52:50 varnishd[28239]: Child (28241) died signal=6
Oct 17 11:52:50 varnishd[28239]: Child (28241) Panic message:
#012Assert error in vbf_fetch_thread(), cache/cache_fetch.c line 842:#012
Condition(uu == bo->fetch_obj->len) not true.#012thread = 
(cache-worker)#012ident = 
Linux,2.6.32-431.17.1.el6.x86_64,x86_64,-smalloc,-smalloc,-hcritbit,epoll#012
Backtrace:#012
     0x43b4ed: /usr/sbin/varnishd() [0x43b4ed]#012
     0x43b7fd: /usr/sbin/varnishd() [0x43b7fd]#012
     0x425a9d: /usr/sbin/varnishd() [0x425a9d]#012
     0x43e44f: /usr/sbin/varnishd(Pool_Work_Thread+0x4ce) [0x43e44f]#012
     0x456f84: /usr/sbin/varnishd() [0x456f84]#012
     0x4570ad: /usr/sbin/varnishd(WRK_thread+0x27) [0x4570ad]#012
     0x3a9f6079d1: /lib64/libpthread.so.0() [0x3a9f6079d1]#012
     0x3a9f2e8b5d: /lib64/libc.so.6(clone+0x6d) [0x3a9f2e8b5d]#012
     busyobj = 0x7fbe0df6b020 {#012
         ws = 0x7fbe0df6b0e0 {#012
         id = "bo",#012
         {s,f,r,e} = {0x7fbe0df6d008,+4232,(nil),+57368},#012
     },#012
     refcnt = 1#012
     retries = 0#012
     failed = 0#012
     state = 3#012
     is_do_gzip#012
     is_do_pass#012
     is_uncacheable#012
     is_is_gunzip#012
     bodystatus = 2 (chunked),#012
     },#012
     ws = 0x7fbe0df6b270 {#012
     id = "obj",#012
     {s,f,r,e} = {0x7fbf5e88d738,+664,(nil),+664},#012
     },#012
     objcore (FETCH) = 0x7fbe5c409b00 {#012
         refcnt = 1#012
         flags = 0x104#012
         objhead = 0x7fc089854320#012
     }#012
     obj (FETCH) = 0x7fbf5e88d500 {#012
         vxid = 3287679352,#012
         http[obj] = {#012
             ws = (nil)[]#012
                 "HTTP/1.1",#012
                 "200",#012
                 OK",#012
                 "Server: nginx/1.4.4",#012
                 "Date: Fri, 17 Oct 2014 09:51:59 GMT",#012
                 "Content-Type: application/hal+json; 
charset=utf-8",#012
                 "Status: 200 OK",#012
                 "X-Frame-Options: SAMEORIGIN",#012
                 "X-XSS-Protection: 1; mode=block",#012
                 "X-Content-Type-Options: nosniff",#012
                 "X-UA-Compatible: chrome=1",#012
                 "X-NewRelic-App-Data: XXXXX",#012
                 "Cache-Control: max-age=0,
Oct 17 11:52:50 varnishd[28239]: child (8042) Started
Oct 17 11:52:50 varnishd[28239]: Child (8042) said Child starts


/Daniel