150723  3:51:38 [Note] InnoDB: Using mutexes to ref count buffer pool pages
150723  3:51:38 [Note] InnoDB: The InnoDB memory heap is disabled
150723  3:51:38 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
150723  3:51:38 [Note] InnoDB: Memory barrier is not used
150723  3:51:38 [Note] InnoDB: Compressed tables use zlib 1.2.8
150723  3:51:38 [Note] InnoDB: Using Linux native AIO
150723  3:51:38 [Note] InnoDB: Not using CPU crc32 instructions
150723  3:51:38 [Note] InnoDB: Initializing buffer pool, size = 256.0M
150723  3:51:38 [Note] InnoDB: Completed initialization of buffer pool
150723  3:51:38 [Note] InnoDB: Highest supported file format is Barracuda.
150723  3:51:38 [Note] InnoDB: 128 rollback segment(s) are active.
150723  3:51:38 [Note] InnoDB: Waiting for purge to start
150723  3:51:38 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.24-72.2 started; log sequence number 85365186
150723  3:51:38 [Note] Plugin 'FEEDBACK' is disabled.
150723  3:51:38 [Note] Server socket created on IP: '0.0.0.0'.
150723  3:51:38 [Note] Event Scheduler: Loaded 0 events
150723  3:51:38 [Note] Reading of all Master_info entries succeded
150723  3:51:38 [Note] Added new Master_info '' to hash table
150723  3:51:38 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.0.20-MariaDB-1~trusty-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution
150723  3:53:33 [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: 10.0.20-MariaDB-1~trusty-log
key_buffer_size=134217728
read_buffer_size=2097152
max_used_connections=2
max_threads=102
thread_count=2
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 759757 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x7fec52e6a008
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 = 0x7fec83484e30 thread_stack 0x48000
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55f40ddaa5de]
/usr/sbin/mysqld(handle_fatal_signal+0x457)[0x55f40d8e8417]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10340)[0x7fec82ad9340]
/usr/sbin/mysqld(_ZN10Item_fieldC1EP5Field+0xe)[0x55f40d905e4e]
/usr/sbin/mysqld(_ZN14Item_subselect18get_tmp_table_itemEP3THD+0x66)[0x55f40d980c56]
/usr/sbin/mysqld(_ZN20Item_direct_view_ref18get_tmp_table_itemEP3THD+0x273)[0x55f40d9163b3]
/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0x19b2)[0x55f40d7cd902]
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x11)[0x55f40d7ce811]
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x343)[0x55f40d7cec23]
/usr/sbin/mysqld(+0x3f24e9)[0x55f40d7694e9]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x56bb)[0x55f40d778e1b]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x1e2)[0x55f40d77af72]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1b81)[0x55f40d77d111]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x22b)[0x55f40d84ba4b]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x55f40d84bb10]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182)[0x7fec82ad1182]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fec819b647d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x7fec4c01f020): SELECT albumview.*,albumartistview.* FROM albumview LEFT JOIN albumartistview ON albumview.idAlbum = albumartistview.idAlbum WHERE albumview.idAlbum = 1 ORDER BY albumartistview.iOrder  LIMIT 0, 30
Connection ID (thread ID): 57
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=on,exists_to_in=on

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.
Writing a core file
150723  3:53:34 [Note] InnoDB: Using mutexes to ref count buffer pool pages
150723  3:53:34 [Note] InnoDB: The InnoDB memory heap is disabled
150723  3:53:34 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
150723  3:53:34 [Note] InnoDB: Memory barrier is not used
150723  3:53:34 [Note] InnoDB: Compressed tables use zlib 1.2.8
150723  3:53:34 [Note] InnoDB: Using Linux native AIO
150723  3:53:34 [Note] InnoDB: Not using CPU crc32 instructions
150723  3:53:34 [Note] InnoDB: Initializing buffer pool, size = 256.0M
150723  3:53:34 [Note] InnoDB: Completed initialization of buffer pool
150723  3:53:34 [Note] InnoDB: Highest supported file format is Barracuda.
150723  3:53:34 [Note] InnoDB: The log sequence numbers 85365186 and 85365186 in ibdata files do not match the log sequence number 85365196 in the ib_logfiles!
150723  3:53:34 [Note] InnoDB: Database was not shutdown normally!
150723  3:53:34 [Note] InnoDB: Starting crash recovery.
150723  3:53:34 [Note] InnoDB: Reading tablespace information from the .ibd files...
150723  3:53:34 [Note] InnoDB: Restoring possible half-written data pages 
150723  3:53:34 [Note] InnoDB: from the doublewrite buffer...
InnoDB: Last MySQL binlog file position 0 6076, file name /var/log/mysql/mariadb-bin.000208
150723  3:53:35 [Note] InnoDB: 128 rollback segment(s) are active.
150723  3:53:35 [Note] InnoDB: Waiting for purge to start
150723  3:53:35 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.24-72.2 started; log sequence number 85365196
150723  3:53:35 [Note] Plugin 'FEEDBACK' is disabled.
150723  3:53:35 [Note] Recovering after a crash using /var/log/mysql/mariadb-bin
150723  3:53:35 [Note] Starting crash recovery...
150723  3:53:35 [Note] Crash recovery finished.
150723  3:53:35 [Note] Server socket created on IP: '0.0.0.0'.
150723  3:53:35 [Note] Event Scheduler: Loaded 0 events
150723  3:53:35 [Note] Reading of all Master_info entries succeded
150723  3:53:35 [Note] Added new Master_info '' to hash table
150723  3:53:35 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.0.20-MariaDB-1~trusty-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution