2015-11-18  9:32:20 140223775668064 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.8-MariaDB-2~wheezy-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution
2015-11-18  9:33:05 139739700532992 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='____', master_port='3306', master_log_file='', master_log_pos='4'. New state master_host='____' master_port='3306', master_log_file='bin.054507', master_log_pos='15415745'.
2015-11-18  9:33:10 139739700131584 [Note] Slave SQL thread initialized, starting replication in log 'bin.054507' at position 15415745, relay log '/data/log/db/mysql/relay-log/relay.000001' position: 4
2015-11-18  9:33:10 139739700332288 [Note] Slave I/O thread: connected to master '____:3306',replication started in log 'bin.054507' at position 15415745
151118  9:44:37 [ERROR] mysqld got signal 11 ;

Server version: 10.1.8-MariaDB-2~wheezy-log
key_buffer_size=16777216
read_buffer_size=2097152
max_used_connections=9
max_threads=5052
thread_count=6
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 15639278 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x7f1820c2b008
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 = 0x7f17af2fe550 thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x2b)[0x7f8864fedfbb]
/usr/sbin/mysqld(handle_fatal_signal+0x475)[0x7f8864b4fa55]
/lib/x86_64-linux-gnu/libpthread.so.0(+0xf0a0)[0x7f886414b0a0]
/usr/sbin/mysqld(_Z8do_cryptPKhjPhPjP20st_encryption_schemejjjyi+0x53)[0x7f8864b03663]
/usr/sbin/mysqld(encryption_scheme_decrypt+0x2b)[0x7f8864b038db]
/usr/sbin/mysqld(+0x9f37b4)[0x7f8864f6d7b4]
/usr/sbin/mysqld(+0x9f392e)[0x7f8864f6d92e]
/usr/sbin/mysqld(+0x991df3)[0x7f8864f0bdf3]
/usr/sbin/mysqld(+0x9921b0)[0x7f8864f0c1b0]
/usr/sbin/mysqld(+0x9aa578)[0x7f8864f24578]
/usr/sbin/mysqld(+0x9ab08f)[0x7f8864f2508f]
/usr/sbin/mysqld(+0x98a52f)[0x7f8864f0452f]
/usr/sbin/mysqld(+0x964e5e)[0x7f8864edee5e]
/usr/sbin/mysqld(+0x966557)[0x7f8864ee0557]
/usr/sbin/mysqld(+0x8640f2)[0x7f8864dde0f2]
/usr/sbin/mysqld(+0x8688ff)[0x7f8864de28ff]
/usr/sbin/mysqld(+0x966407)[0x7f8864ee0407]
/usr/sbin/mysqld(+0x8ded6c)[0x7f8864e58d6c]
/usr/sbin/mysqld(+0x8e1734)[0x7f8864e5b734]
/usr/sbin/mysqld(+0x8e1af8)[0x7f8864e5baf8]
/usr/sbin/mysqld(+0x8ee9bd)[0x7f8864e689bd]
/usr/sbin/mysqld(+0x84612d)[0x7f8864dc012d]
/usr/sbin/mysqld(_ZN7handler12ha_write_rowEPh+0xf4)[0x7f8864b59204]
/usr/sbin/mysqld(_ZN14Rows_log_event9write_rowEP14rpl_group_infob+0x1b9)[0x7f8864c1cfb9]
/usr/sbin/mysqld(_ZN20Write_rows_log_event11do_exec_rowEP14rpl_group_info+0x7d)[0x7f8864c1d3ad]
/usr/sbin/mysqld(_ZN14Rows_log_event14do_apply_eventEP14rpl_group_info+0x323)[0x7f8864c10143]
/usr/sbin/mysqld(_ZN9Log_event11apply_eventEP14rpl_group_info+0x71)[0x7f8864976af1]
/usr/sbin/mysqld(_Z26apply_event_and_update_posP9Log_eventP3THDP14rpl_group_infoP19rpl_parallel_thread+0x17b)[0x7f886496caeb]
/usr/sbin/mysqld(handle_slave_sql+0x24ca)[0x7f886497001a]
/usr/sbin/mysqld(+0x8213cd)[0x7f8864d9b3cd]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x6b50)[0x7f8864142b50]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f886260d95d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x0): is an invalid pointer
Connection ID (thread ID): 6
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.
151118 09:44:43 mysqld_safe Number of processes running now: 0