Version: '5.2.4-falcon-alpha-debug'  socket: '/tmp/mysql.sock'  port: 3306  yes
mysqld got signal 11;
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.

key_buffer_size=8388572
read_buffer_size=131072
max_used_connections=1
max_connections=151
threads_connected=1
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 336762 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

thd: 0x8e0c768
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...
Cannot determine thread, fp=0x42b0abac, backtrace may not be correct.
Stack range sanity check OK, backtrace follows:
0x81f57a7 handle_segfault + 417
0x8153a81 _ZN10Item_field15fix_outer_fieldEP3THDPP5FieldPP4Item + 99
0x815430b _ZN10Item_field10fix_fieldsEP3THDPP4Item + 523
0x8267a56 _Z18find_order_in_listP3THDPP4ItemP13st_table_listP8st_orderR4ListIS1_ESA_b + 636
0x8267b3b _Z11setup_orderP3THDPP4ItemP13st_table_listR4ListIS1_ES8_P8st_order + 83
0x824ca58 _ZN4JOIN7prepareEPPP4ItemP13st_table_listjS1_jP8st_orderS7_S1_S7_P13st_select_lexP18st_select_lex_unit + 840
0x8251287 _Z12mysql_selectP3THDPPP4ItemP13st_table_listjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_sel + 277
0x832c327 _ZN18st_select_lex_unit4execEv + 2595
0x832cffb _Z21mysql_derived_fillingP3THDP6st_lexP13st_table_list + 85
0x832cb82 _Z20mysql_handle_derivedP6st_lexPFbP3THDS0_P13st_table_listE + 82
0x823db8b _Z20open_and_lock_tablesP3THDP13st_table_list + 257
0x8217033 _Z21execute_sqlcom_selectP3THDP13st_table_list + 165
0x820fb6e _Z21mysql_execute_commandP3THD + 1480
0x8218c01 _Z11mysql_parseP3THDPcj + 353
0x820e0c1 _Z16dispatch_command19enum_server_commandP3THDPcj + 2077
0x820d899 _Z10do_commandP3THD + 603
0x820c986 handle_one_connection + 900
0x40250aa7 _end + 933748247
0x401e6c2e _end + 933314462
New value of fp=(nil) failed sanity check, terminating stack trace!
Please read http://dev.mysql.com/doc/mysql/en/using-stack-trace.html and follow instructions on how to resolve the stack trace. Resolved
stack trace is much more helpful in diagnosing the problem, so please do 
resolve it
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0x8e04758 = SELECT User FROM
(
        SELECT * FROM mysql.user
UNION
        SELECT * FROM mysql.user
ORDER BY unknown_column
) AS test
thd->thread_id=1
The manual page at http://www.mysql.com/doc/en/Crashing.html contains
information that should help you find out what is causing the crash.

Number of processes running now: 0