[Varnish] #1448: Segfault in jemalloc

[Varnish]

#1448: Segfault in jemalloc
----------------------+-------------------
 Reporter:  lkarsten  |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:
Component:  varnishd  |    Version:  3.0.5
 Severity:  normal    |   Keywords:
----------------------+-------------------
 {{{
 Mar 11 xx:xx:xx kernel: varnishd[1257]: segfault at 0 ip 000000000045831d
 sp 00007fa98cdf9df0 error 4 in varnishd[400000+7a000]
 }}}

 {{{
 #0  arena_dalloc_small (ptr=0x7fa940000bc0) at jemalloc_linux.c:3687
 #1  arena_dalloc (ptr=0x7fa940000bc0) at jemalloc_linux.c:3939
 #2  idalloc (ptr=0x7fa940000bc0) at jemalloc_linux.c:3957
 #3  free (ptr=0x7fa940000bc0) at jemalloc_linux.c:5586
 Cannot access memory at address 0x7fa98cdf9e38
 }}}

 daghf dug up these seemingly related resources:

 http://99designs.com/tech-blog/blog/2014/01/30/debugging-varnish/

 http://lists.freebsd.org/pipermail/freebsd-
 current/2010-January/015138.html

 Short version: our embedded jemalloc version has a bug. I find it a bit
 odd that we haven't seen this until now.

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1448>
Varnish <https://varnish-cache.org/>
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