server_audit_events=CONNECT,TABLE,QUERY
server_audit_output_type=FILE
server_audit_file_path=audit.log
server_audit_file_rotate_size=100000
server_audit_logging=OFF

[wfong@mariaref ~]$ mysql -h 192.168.7.174 -u will 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 5
Server version: 5.5.32-MariaDB-log MariaDB Server

Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> SELECT VERSION(), CURRENT_USER();
+--------------------+----------------+
| VERSION()          | CURRENT_USER() |
+--------------------+----------------+
| 5.5.32-MariaDB-log | will@%         |
+--------------------+----------------+
1 row in set (0.00 sec)

MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE 'server_audit_%';
+-------------------------------+-----------------------+
| Variable_name                 | Value                 |
+-------------------------------+-----------------------+
| server_audit_events           | CONNECT,QUERY,TABLE   |
| server_audit_excl_users       |                       |
| server_audit_file_path        | audit.log             |
| server_audit_file_rotate_size | 100000                |
| server_audit_incl_users       |                       |
| server_audit_logging          | OFF                   |
| server_audit_mode             | 1                     |
| server_audit_output_type      | file                  |
| server_audit_rotate           | OFF                   |
| server_audit_rotations        | 9                     |
| server_audit_syslog_facility  | LOG_USER              |
| server_audit_syslog_ident     | mysql-server_auditing |
| server_audit_syslog_info      |                       |
| server_audit_syslog_priority  | LOG_INFO              |
+-------------------------------+-----------------------+
14 rows in set (0.00 sec)

MariaDB [(none)]> INSERT INTO test.foo VALUES ( 2 );
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> SET GLOBAL server_audit_logging = ON;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> INSERT INTO test.foo VALUES ( 3 );
ERROR 2013 (HY000): Lost connection to MySQL server during query
MariaDB [(none)]> 

130822  7:43:39 [Warning] IP address '192.168.7.172' could not be resolved: Name or service not known
130822  7:45:53 server_audit: logging was enabled.
130822  7:45:55 [ERROR] 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.

To report this bug, see http://kb.askmonty.org/en/reporting-bugs

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.

Server version: 5.5.32-MariaDB-log
key_buffer_size=134217728
read_buffer_size=131072
max_used_connections=2
max_threads=153
thread_count=2
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 466714 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x3cecbe0
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 = 0x7f85442c1d78 thread_stack 0x48000
??:0(my_print_stacktrace)[0xa8631e]
??:0(handle_fatal_signal)[0x6cdd0b]
??:0(??)[0x3bc6a0f500]
??:0(??)[0x3bc6732d5f]
??:0(??)[0x7f85444d3e9f]
??:0(??)[0x7f85444d44df]
??:0(table_class_handler(THD*, unsigned int, __va_list_tag*))[0x6454ba]
??:0(mysql_audit_notify(THD*, unsigned int, unsigned int, ...))[0x644f74]
??:0(handler::ha_external_lock(THD*, int))[0x6ceb47]
??:0(mysql_lock_tables(THD*, st_mysql_lock*, unsigned int))[0x78c3dd]
??:0(mysql_lock_tables(THD*, TABLE**, unsigned int, unsigned int))[0x78c783]
??:0(lock_tables(THD*, TABLE_LIST*, unsigned int, unsigned int))[0x546f35]
??:0(open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*))[0x54c202]
??:0(mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool))[0x5765a3]
??:0(mysql_execute_command(THD*))[0x58b160]
??:0(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x58e369]
??:0(dispatch_command(enum_server_command, THD*, char*, unsigned int))[0x58f790]
??:0(do_handle_one_connection(THD*))[0x647cdf]
??:0(handle_one_connection)[0x647d7c]
??:0(??)[0x3bc6a07851]
??:0(??)[0x3bc66e890d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x7f8508004c88): is an invalid pointer
Connection ID (thread ID): 5
Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=off

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
130822 07:45:55 mysqld_safe Number of processes running now: 0
130822 07:45:55 mysqld_safe mysqld restarted
130822  7:45:55 InnoDB: The InnoDB memory heap is disabled
130822  7:45:55 InnoDB: Mutexes and rw_locks use GCC atomic builtins
130822  7:45:55 InnoDB: Compressed tables use zlib 1.2.3
130822  7:45:55 InnoDB: Using Linux native AIO
130822  7:45:55 InnoDB: Initializing buffer pool, size = 128.0M
130822  7:45:55 InnoDB: Completed initialization of buffer pool
130822  7:45:55 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
130822  7:45:55  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
130822  7:45:55  InnoDB: Waiting for the background threads to start
130822  7:45:56 Percona XtraDB (http://www.percona.com) 5.5.32-MariaDB-30.2 started; log sequence number 1601509
130822  7:45:56 [Note] Plugin 'FEEDBACK' is disabled.
130822  7:45:56 server_audit: STARTED
130822  7:45:56 server_audit: Output was redirected to 'file'
130822  7:45:56 server_audit: logging is disabled.
130822  7:45:56 [Note] Server socket created on IP: '0.0.0.0'.
130822  7:45:56 [Note] Event Scheduler: Loaded 0 events
130822  7:45:56 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.5.32-MariaDB-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server

130822  7:44:41	    5 Connect	will@192.168.7.172 as anonymous on 
		    5 Query	select @@version_comment limit 1
130822  7:44:57	    5 Query	SELECT VERSION(), CURRENT_USER()
130822  7:45:15	    5 Query	SHOW GLOBAL VARIABLES LIKE 'server_audit_%'
130822  7:45:25	    5 Query	INSERT INTO test.foo VALUES ( 2 )
130822  7:45:53	    5 Query	SET GLOBAL server_audit_logging = ON
130822  7:45:55	    5 Query	INSERT INTO test.foo VALUES ( 3 )
/usr/sbin/mysqld, Version: 5.5.32-MariaDB-log (MariaDB Server). started with: