Crash with signal 11 since last update (2 time in one month)

Hello,

Since upgrade to MariaDB 5.5.47 (5.5.47+maria-1~wheezy from 5.5.46+maria-1~wheezy) I have crash on only one MySQL server (9 servers with same production load/environement got the same update). I'm using InnoDB and MyISAM storage. RAM/CPU/DISK usage is normal before the crash.

I had only two crash in one month, and I cannot reproduce the bug by myself. It's a heavy loaded server so it's really difficult for me to activate debug mode.

That's all I have :

Jan 6 15:58:40 cl1-sql-tmp mysqld: 160106 15:58:40 [ERROR] mysqld got signal 11 ;
Jan 6 15:58:40 cl1-sql-tmp mysqld: This could be because you hit a bug. It is also possible that this binary
Jan 6 15:58:40 cl1-sql-tmp mysqld: or one of the libraries it was linked against is corrupt, improperly built,
Jan 6 15:58:40 cl1-sql-tmp mysqld: or misconfigured. This error can also be caused by malfunctioning hardware.
Jan 6 15:58:40 cl1-sql-tmp mysqld:
Jan 6 15:58:40 cl1-sql-tmp mysqld: To report this bug, see http://kb.askmonty.org/en/reporting-bugs
Jan 6 15:58:40 cl1-sql-tmp mysqld:
Jan 6 15:58:40 cl1-sql-tmp mysqld: We will try our best to scrape up some info that will hopefully help
Jan 6 15:58:40 cl1-sql-tmp mysqld: diagnose the problem, but since we have already crashed,
Jan 6 15:58:40 cl1-sql-tmp mysqld: something is definitely wrong and this may fail.
Jan 6 15:58:40 cl1-sql-tmp mysqld:
Jan 6 15:58:40 cl1-sql-tmp mysqld: Server version: 5.5.47-MariaDB-1~wheezy
Jan 6 15:58:40 cl1-sql-tmp mysqld: key_buffer_size=2147483648
Jan 6 15:58:40 cl1-sql-tmp mysqld: read_buffer_size=4194304
Jan 6 15:58:40 cl1-sql-tmp mysqld: max_used_connections=176
Jan 6 15:58:40 cl1-sql-tmp mysqld: max_threads=502
Jan 6 15:58:40 cl1-sql-tmp mysqld: thread_count=6
Jan 6 15:58:40 cl1-sql-tmp mysqld: It is possible that mysqld could use up to
Jan 6 15:58:40 cl1-sql-tmp mysqld: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 6218475 K bytes of memory
Jan 6 15:58:40 cl1-sql-tmp mysqld: Hope that's ok; if not, decrease some variables in the equation.
Jan 6 15:58:40 cl1-sql-tmp mysqld:
Jan 6 15:58:40 cl1-sql-tmp mysqld: Thread pointer: 0x0x7efa3cce0000
Jan 6 15:58:40 cl1-sql-tmp mysqld: Attempting backtrace. You can use the following information to find out
Jan 6 15:58:40 cl1-sql-tmp mysqld: where mysqld died. If you see no messages after this, something went
Jan 6 15:58:40 cl1-sql-tmp mysqld: terribly wrong...
Jan 6 15:58:41 cl1-sql-tmp mysqld: stack_bottom = 0x7efa0504be40 thread_stack 0x48000
Jan 6 15:58:42 cl1-sql-tmp mysqld: (my_addr_resolve failure: fork)
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(my_print_stacktrace+0x2b) [0x7f0030f283eb]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(handle_fatal_signal+0x422) [0x7f0030b5d2f2]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /lib/x86_64-linux-gnu/libpthread.so.0(+0xf0a0) [0x7f00302520a0]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(st_join_table::cleanup()+0x43) [0x7f0030a569e3]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(JOIN::destroy()+0x2d0) [0x7f0030a59970]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(st_select_lex::cleanup()+0x2c) [0x7f0030aa9cac]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(mysql_select(THD*, Item**, TABLE_LIST, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*)+0x8d3) [0x7f0030a6b7b3]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(handle_select(THD*, LEX*, select_result*, unsigned long)+0x2c3) [0x7f0030a71df3]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(+0x399ab1) [0x7f0030a1aab1]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(mysql_execute_command(THD*)+0x1bcd) [0x7f0030a222fd]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(+0x3a5647) [0x7f0030a26647]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x1b51) [0x7f0030a28ad1]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(do_handle_one_connection(THD*)+0x22b) [0x7f0030adec2b]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /usr/sbin/mysqld(handle_one_connection+0x51) [0x7f0030adecb1]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /lib/x86_64-linux-gnu/libpthread.so.0(+0x6b50) [0x7f0030249b50]
Jan 6 15:58:42 cl1-sql-tmp mysqld: /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7f002eb5795d]
Jan 6 15:58:42 cl1-sql-tmp mysqld:
Jan 6 15:58:42 cl1-sql-tmp mysqld: Trying to get some variables.
Jan 6 15:58:42 cl1-sql-tmp mysqld: Some pointers may be invalid and cause the dump to abort.
Jan 6 15:58:42 cl1-sql-tmp mysqld: Query (0x7efaec89f018): is an invalid pointer
Jan 6 15:58:42 cl1-sql-tmp mysqld: Connection ID (thread ID): 17204365
Jan 6 15:58:42 cl1-sql-tmp mysqld: Status: NOT_KILLED
Jan 6 15:58:42 cl1-sql-tmp mysqld:
Jan 6 15:58:42 cl1-sql-tmp mysqld: 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
Jan 6 15:58:42 cl1-sql-tmp mysqld:
Jan 6 15:58:42 cl1-sql-tmp mysqld: The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
Jan 6 15:58:42 cl1-sql-tmp mysqld: information that should help you find out what is causing the crash.
Jan 6 15:58:43 cl1-sql-tmp mysqld_safe: Number of processes running now: 0
Jan 6 15:58:43 cl1-sql-tmp mysqld_safe: mysqld restarted

Thanks for your help.

Regards.