Description of problem:


found this core, with glusterfsd crash,

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.25.el6_1.3.x86_64 libgcc-4.4.5-6.el6.x86_64
(gdb) bt
#0  0x000000340b60c100 in pthread_spin_lock () from /lib64/libpthread.so.0
#1  0x00007f69815fa26e in fd_ref (fd=0xd2c780) at fd.c:453
#2  0x00007f69815ecfc1 in fop_flush_stub (frame=0x7f69804021a4, fn=0x7f697cc30d65 <iot_flush_wrapper>, fd=0xd2c780)
    at call-stub.c:1018
#3  0x00007f697cc30fea in iot_flush (frame=0x7f69804021a4, this=0xceeff0, fd=0xd2c780) at io-threads.c:973
#4  0x00007f69815d983f in default_flush (frame=0x7f69804020f8, this=0xcf0280, fd=0xd2c780) at defaults.c:894
#5  0x00007f697c7f7998 in io_stats_flush (frame=0x7f698040204c, this=0xcf19b0, fd=0xd2c780) at io-stats.c:2120
#6  0x00007f697c5c1bda in server_connection_destroy (this=0xcf2e10, conn=0xd2bac0) at server-helpers.c:744
#7  0x00007f697c5c2108 in server_connection_put (this=0xcf2e10, conn=0xd2bac0) at server-helpers.c:842
#8  0x00007f697c5b8b6c in grace_time_handler (data=0xd2bac0) at server.c:54
#9  0x00007f69815e35f4 in gf_timer_proc (ctx=0xcb4010) at timer.c:177
#10 0x000000340b6077e1 in start_thread () from /lib64/libpthread.so.0
#11 0x000000340aee577d in clone () from /lib64/libc.so.6
(gdb) 


[root@RHSSA1 .glusterfs]# /root/330/inst/sbin/gluster volume info
 
Volume Name: dist-rep
Type: Distributed-Replicate
Volume ID: 616f341b-eb78-4bab-814d-217e5a00d503
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: 10.1.11.160:/export-xfs/dr
Brick2: 10.1.11.159:/export-xfs/drr
Brick3: 10.1.11.160:/export-xfs/ddr
Brick4: 10.1.11.159:/export-xfs/ddrr
Options Reconfigured:
nfs.addr-namelookup: off

cores generated on "10.1.11.159"



Version-Release number of selected component (if applicable):

[root@RHSSA1 .glusterfs]# /root/330/inst/sbin/glusterfs -V
glusterfs 3.3.0qa24 built on Feb 24 2012 05:39:02
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General Public License.
[root@RHSSA1 .glusterfs]# 

How reproducible:

found two similar cores

Steps to Reproduce:
1.just observed the cores generated on one of the nodes.
2.
3.
  
Actual results:


Expected results:


Additional info: