Description of problem:
Created a striped replicate volume(4 bricks -> 2x2) & ran posix compliance test from one client & untarred openssl from the other.

Server crashed 3 bricks with same backtrace.

#0  __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:32
#1  0x00007f06deca309b in ?? () from /usr/lib/libefence.so.0
#2  0x00007f06deca3431 in EF_Exit () from /usr/lib/libefence.so.0
#3  0x00007f06deca2b53 in memalign () from /usr/lib/libefence.so.0
#4  0x00007f06deca2757 in malloc () from /usr/lib/libefence.so.0
#5  0x00007f06deead5b4 in ?? () from /lib64/ld-linux-x86-64.so.2
#6  0x00007f06deeb7b4a in ?? () from /lib64/ld-linux-x86-64.so.2
#7  0x00007f06deeb3996 in ?? () from /lib64/ld-linux-x86-64.so.2
#8  0x00007f06deeb837a in ?? () from /lib64/ld-linux-x86-64.so.2
#9  0x00007f06de1401e0 in do_dlopen (ptr=0x7fff3dd3d170) at dl-libc.c:86
#10 0x00007f06deeb3996 in ?? () from /lib64/ld-linux-x86-64.so.2
#11 0x00007f06de14029a in dlerror_run (args=0x7fff3dd3d170, operate=0x7f06de1401a0 <do_dlopen>) at dl-libc.c:47
#12 __GI___libc_dlopen_mode (name=<optimized out>, mode=<optimized out>) at dl-libc.c:160
#13 0x00007f06de11b8a5 in init () at ../sysdeps/x86_64/../ia64/backtrace.c:41
#14 0x00007f06de3cf713 in pthread_once () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S:104
#15 0x00007f06de11b99c in __GI___backtrace (array=<optimized out>, size=200) at ../sysdeps/x86_64/../ia64/backtrace.c:85
#16 0x00007f06dea40d26 in gf_print_trace (signum=11) at ../../../libglusterfs/src/common-utils.c:425
#17 <signal handler called>
#18 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:32
#19 0x00007f06deca309b in ?? () from /usr/lib/libefence.so.0
#20 0x00007f06deca3431 in EF_Exit () from /usr/lib/libefence.so.0
#21 0x00007f06deca2a79 in memalign () from /usr/lib/libefence.so.0
#22 0x00007f06deca2757 in malloc () from /usr/lib/libefence.so.0
#23 0x00007f06deca2d34 in calloc () from /usr/lib/libefence.so.0
#24 0x00007f06dea5f914 in __gf_calloc (nmemb=1, size=40, type=2) at ../../../libglusterfs/src/mem-pool.c:145
#25 0x00007f06dea25c8f in _dict_set (this=0x7f06c73e0fc0, key=0x7f06c73e4fdc "trusted.afr.vol-client-2", value=0x7f06c770dfd8)
    at ../../../libglusterfs/src/dict.c:275
#26 0x00007f06dea25e9b in dict_set (this=0x7f06c73e0fc0, key=0x7f06c73e4fdc "trusted.afr.vol-client-2", value=0x7f06c770dfd8)
    at ../../../libglusterfs/src/dict.c:324
#27 0x00007f06dea2adff in dict_unserialize (orig_buf=0x7f06c73e4f68 "", size=144, fill=0x7fff3dd3e7b0)
    at ../../../libglusterfs/src/dict.c:2671
#28 0x00007f06d84186ea in server_lookup (req=0x7f06d7ec0810) at ../../../../../xlators/protocol/server/src/server3_1-fops.c:5196
#29 0x00007f06de8000f0 in rpcsvc_handle_rpc_call (svc=0x7f06d88cdf50, trans=0x7f06d9e4bd40, msg=0x7f06c7412fb0)
    at ../../../../rpc/rpc-lib/src/rpcsvc.c:514
#30 0x00007f06de80046d in rpcsvc_notify (trans=0x7f06d9e4bd40, mydata=0x7f06d88cdf50, event=RPC_TRANSPORT_MSG_RECEIVED, data=0x7f06c7412fb0)
    at ../../../../rpc/rpc-lib/src/rpcsvc.c:610
#31 0x00007f06de80603c in rpc_transport_notify (this=0x7f06d9e4bd40, event=RPC_TRANSPORT_MSG_RECEIVED, data=0x7f06c7412fb0)
    at ../../../../rpc/rpc-lib/src/rpc-transport.c:498
#32 0x00007f06da7b02db in socket_event_poll_in (this=0x7f06d9e4bd40) at ../../../../../rpc/rpc-transport/socket/src/socket.c:1675
#33 0x00007f06da7b0844 in socket_event_handler (fd=15, idx=8, data=0x7f06d9e4bd40, poll_in=1, poll_out=0, poll_err=0)
    at ../../../../../rpc/rpc-transport/socket/src/socket.c:1790
#34 0x00007f06dea5edec in event_dispatch_epoll_handler (event_pool=0x7f06deff6f60, events=0x7f06d9e393e0, i=0)
    at ../../../libglusterfs/src/event.c:794
#35 0x00007f06dea5efff in event_dispatch_epoll (event_pool=0x7f06deff6f60) at ../../../libglusterfs/src/event.c:856
#36 0x00007f06dea5f372 in event_dispatch (event_pool=0x7f06deff6f60) at ../../../libglusterfs/src/event.c:956
#37 0x0000000000407eee in main (argc=17, argv=0x7fff3dd3ed18) at ../../../glusterfsd/src/glusterfsd.c:1601
(gdb) f 25
#25 0x00007f06dea25c8f in _dict_set (this=0x7f06c73e0fc0, key=0x7f06c73e4fdc "trusted.afr.vol-client-2", value=0x7f06c770dfd8)
    at ../../../libglusterfs/src/dict.c:275
275	        pair = (data_pair_t *) GF_CALLOC (1, sizeof (*pair),
(gdb) f 24
#24 0x00007f06dea5f914 in __gf_calloc (nmemb=1, size=40, type=2) at ../../../libglusterfs/src/mem-pool.c:145
145	        ptr = calloc (1, tot_size);