Posting the stack here for convenience:

130311  4:02:40 [Warning] Aborted connection 31256926 to db: 'unconnected' user: 'admin' host: '10.2.46.110' (Got an error reading communication packets)
130311  4:02:40 [Warning] Aborted connection 31256936 to db: 'unconnected' user: 'admin' host: '10.2.46.110' (Got an error reading communication packets)
130311  4:02:40 [Warning] Aborted connection 31256942 to db: 'unconnected' user: 'admin' host: '10.2.46.110' (Got an error reading communication packets)
terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<asio::system_error> >'
  what():  Bad file descriptor
11:02:49 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed, 
something is definitely wrong and this may fail.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=8388608
read_buffer_size=131072
max_used_connections=232
max_threads=15000
thread_count=6
connection_count=6
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 32837918 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0 thread_stack 0x40000
/usr/sbin/mysqld(my_print_stacktrace+0x35)[0x7c9765]
/usr/sbin/mysqld(handle_fatal_signal+0x4a4)[0x6a2ce4]
/lib64/libpthread.so.0[0x3bbba0f500]
/lib64/libc.so.6(gsignal+0x35)[0x3bbb2328a5]
/lib64/libc.so.6(abort+0x175)[0x3bbb234085]
/usr/lib64/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x12d)[0x7f49483f2a5d]
/usr/lib64/libstdc++.so.6(+0x3bbdabcbe6)[0x7f49483f0be6]
/usr/lib64/libstdc++.so.6(+0x3bbdabcc13)[0x7f49483f0c13]
/usr/lib64/libstdc++.so.6(+0x3bbdabcd0e)[0x7f49483f0d0e]
/usr/lib64/libgalera_smm.so(_ZN5boost15throw_exceptionIN4asio12system_errorEEEvRKT_+0x18a)[0x7f494876c70a]
/usr/lib64/libgalera_smm.so(_ZN4asio6detail11throw_errorERKNS_10error_codeE+0x5b)[0x7f494876c82b]
/usr/lib64/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket17assign_local_addrEv+0x707)[0x7f494875d137]
/usr/lib64/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket15connect_handlerERKN4asio10error_codeE+0x67)[0x7f494875dda7]
/usr/lib64/libgalera_smm.so(_ZN4asio6detail26reactive_socket_connect_opIN5boost3_bi6bind_tIvNS2_4_mfi3mf1IvN5gcomm13AsioTcpSocketERKNS_10error_codeEEENS3_5list2INS3_5valueINS2_10shared_ptrIS8_EEEEPFNS2_3argILi1EEEvEEEEEE11do_completeEPNS0_15task_io_serviceEPNS0_25task_io_service_operationES9_m+0x10e)[0x7f494876822e]
/usr/lib64/libgalera_smm.so(_ZN4asio6detail15task_io_service3runERNS_10error_codeE+0x459)[0x7f4948788a49]
/usr/lib64/libgalera_smm.so(_ZN5gcomm12AsioProtonet10event_loopERKN2gu8datetime6PeriodE+0x1d6)[0x7f4948782d96]
/usr/lib64/libgalera_smm.so(_ZN9GCommConn3runEv+0x57)[0x7f494879b8a7]
/usr/lib64/libgalera_smm.so(_ZN9GCommConn6run_fnEPv+0x9)[0x7f494879f199]
/lib64/libpthread.so.0[0x3bbba07851]
/lib64/libc.so.6(clone+0x6d)[0x3bbb2e811d]