glusterfs client segfault in patch-308

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client log:

2007-07-12 21:57:43 C [common-utils.c:208:gf_print_trace] debug-backtrace: Got signal (11), printing backtrace 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/libglusterfs.so.0(gf_print_trace+0x26) [0xd53bca] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /lib/tls/libc.so.6 [0x5dd898] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/libglusterfs.so.0(dict_get+0x11) [0xd4e885] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/glusterfs/1.3.0-pre5.2/xlator/cluster/unify.so(unify_flush+0x4b) [0x117a4b] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/glusterfs/1.3.0-pre5.2/xlator/performance/io-threads.so [0xa1807a] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/libglusterfs.so.0(call_resume+0x3b8) [0xd588ec] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /usr/local/lib/glusterfs/1.3.0-pre5.2/xlator/performance/io-threads.so [0xa1922a] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /lib/tls/libpthread.so.0 [0x735371] 2007-07-12 21:57:43 C [common-utils.c:210:gf_print_trace] debug-backtrace: /lib/tls/libc.so.6(__clone+0x5e) [0x67dffe]

bt:
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/tls/libthread_db.so.1".

Core was generated by `[glusterfs]
[snip]
(gdb) bt
#0  0x0061ed58 in strcmp () from /lib/tls/libc.so.6
#1  0x00d4e577 in _dict_lookup (this=Variable "this" is not available.
) at ../../../libglusterfs/src/dict.c:125
#2 0x00d4e885 in dict_get (this=0xa563d98, key=0x9ded328 "client02") at ../../../libglusterfs/src/dict.c:185 #3 0x00117a4b in unify_flush (frame=0xb5606d28, this=0x9ded848, fd=0xa8a6540) at ../../../../../xlators/cluster/unify/src/unify.c:2778 #4 0x00a1807a in iot_flush_wrapper (frame=0xb59a3648, this=0xeeeeeeee, fd=0xa8a6540) at ../../../../../xlators/performance/io-threads/src/io-threads.c:319 #5 0x00d588ec in call_resume (stub=0xb597f1d8) at ../../../libglusterfs/src/call-stub.c:1812 #6 0x00a1922a in iot_worker (arg=0x9dff1e0) at ../../../../../xlators/performance/io-threads/src/io-threads.c:1012
#7  0x00735371 in start_thread () from /lib/tls/libpthread.so.0
#8  0x0067dffe in clone () from /lib/tls/libc.so.6

client spec:
volume ns
  type protocol/client
  option transport-type tcp/client
  option remote-host nfs-deb-03
  option remote-subvolume ns
end-volume

volume client01
  type protocol/client
  option transport-type tcp/client
  option remote-host nfs-deb-03
  option remote-subvolume brick01
end-volume

volume client02
  type protocol/client
  option transport-type tcp/client
  option remote-host nfs-deb-03
  option remote-subvolume brick02
end-volume

volume client03
  type protocol/client
  option transport-type tcp/client
  option remote-host nfs-deb-03
  option remote-subvolume brick03
end-volume

volume client31
  type protocol/client
  option transport-type tcp/client
  option remote-host nfs-deb-03
  option remote-subvolume brick31
end-volume

volume export
  type cluster/unify
  subvolumes client01 client02 client03 client31
  option namespace ns
  option scheduler alu
  option alu.limits.min-free-disk 1GB
option alu.order disk-usage:read-usage:write-usage:open-files-usage:disk-speed-usage
end-volume

volume iothreads
  type performance/io-threads
  option thread-count 4
  option cache-size 16MB
  subvolumes export
end-volume

volume readahead
  type performance/read-ahead
  option page-size 4096
  option page-count 16
  subvolumes iothreads
end-volume

volume writeback
  type performance/write-behind
  option aggregate-size 131072
  option flush-behind on
  subvolumes readahead
end-volume





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