[Gluster-users] Segmentation fault during glusterfs rebalance

[符永涛]

Dear gluster experts,

Recently we have encountered a segmentation fault on one of our servers
during glusterfs rebalance.
We use glusterfs 3.3, the crash statck is as following:

Core was generated by `/usr/sbin/glusterfs -s localhost --volfile-id
mams-cq-mt-video --xlator-option'.
Program terminated with signal 11, Segmentation fault.
#0  0x000000306a075485 in malloc_consolidate () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
glusterfs-3.3.0-1.el6.x86_64
(gdb) bt
#0  0x000000306a075485 in malloc_consolidate () from /lib64/libc.so.6
#1  0x000000306a077e28 in _int_free () from /lib64/libc.so.6
#2  0x00007f76952273c2 in gf_dirent_free (entries=0x7f765c600af0) at
gf-dirent.c:66
#3  0x00007f76907bd77d in gf_defrag_migrate_data (this=0x296c8a0,
defrag=0x298ad60, loc=0x7f765c601050, migrate_data=0x7f766451813c) at
dht-rebalance.c:1232
#4  0x00007f76907bdced in gf_defrag_fix_layout (this=0x296c8a0,
defrag=0x298ad60, loc=0x7f765c601050, fix_layout=0x7f765811513c,
migrate_data=0x7f766451813c)
    at dht-rebalance.c:1269
#5  0x00007f76907be1d9 in gf_defrag_fix_layout (this=0x296c8a0,
defrag=0x298ad60, loc=0x7f765c601260, fix_layout=0x7f765811513c,
migrate_data=0x7f766451813c)
    at dht-rebalance.c:1361
#6  0x00007f76907be1d9 in gf_defrag_fix_layout (this=0x296c8a0,
defrag=0x298ad60, loc=0x7f765c601470, fix_layout=0x7f765811513c,
migrate_data=0x7f766451813c)
    at dht-rebalance.c:1361
#7  0x00007f76907be1d9 in gf_defrag_fix_layout (this=0x296c8a0,
defrag=0x298ad60, loc=0x7f765c6015e0, fix_layout=0x7f765811513c,
migrate_data=0x7f766451813c)
    at dht-rebalance.c:1361
#8  0x00007f76907be62f in gf_defrag_start_crawl (data=0x296c8a0) at
dht-rebalance.c:1469
#9  0x00007f7695231a22 in synctask_wrap (old_task=<value optimized out>) at
syncop.c:120
#10 0x000000306a043630 in ?? () from /lib64/libc.so.6
#11 0x0000000000000000 in ?? ()
(gdb)

Any one know what's the problem?
Thank you.

-- 
符永涛
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