Server version: 10.1.16-MariaDB

key_buffer_size=536870912

read_buffer_size=1048576

max_used_connections=13

max_threads=502

thread_count=13

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 5160790 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x7fdfb2ddf008

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 = 0x7fdf719fde98 thread_stack 0x200000

/usr/sbin/mysqld(my_print_stacktrace+0x29)[0x7fe1599e8f7f]

/usr/sbin/mysqld(handle_fatal_signal+0x2dd)[0x7fe15954132d]

/lib64/libpthread.so.0(+0x103b0)[0x7fe1577023b0]

/usr/sbin/mysqld(+0x46cb7d)[0x7fe159438b7d]

/usr/sbin/mysqld(_ZN13st_select_lex5printEP3THDP6String15enum_query_type+0x47a)[0x7fe1594392da]

/usr/sbin/mysqld(_ZN14Item_subselect5printEP6String15enum_query_type+0x5b)[0x7fe1595bc5db]

/usr/sbin/mysqld(_ZN9Item_func8print_opEP6String15enum_query_type+0x16e)[0x7fe159596f3e]

/usr/sbin/mysqld(+0x46ccf0)[0x7fe159438cf0]

/usr/sbin/mysqld(_ZN10TABLE_LIST5printEP3THDyP6String15enum_query_type+0x50)[0x7fe1594389f0]

/usr/sbin/mysqld(+0x46cc56)[0x7fe159438c56]

/usr/sbin/mysqld(_ZN13st_select_lex5printEP3THDP6String15enum_query_type+0x47a)[0x7fe1594392da]

/usr/sbin/mysqld(_ZN18st_select_lex_unit5printEP6String15enum_query_type+0x4f)[0x7fe1593e419f]

/usr/sbin/mysqld(_Z29mysqld_show_create_get_fieldsP3THDP10TABLE_LISTP4ListI4ItemEP6String+0x2a8)[0x7fe159447d38]

/usr/sbin/mysqld(_Z18mysqld_show_createP3THDP10TABLE_LIST+0xaf)[0x7fe15944878f]

/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x3751)[0x7fe1593f1ea1]

/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x214)[0x7fe1593f5e94]

/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x151e)[0x7fe1593f7a6e]

/usr/sbin/mysqld(_Z10do_commandP3THD+0xd7)[0x7fe1593f8527]

/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x1c4)[0x7fe1594affe4]

/usr/sbin/mysqld(handle_one_connection+0x37)[0x7fe1594b0077]

/lib64/libpthread.so.0(+0x730c)[0x7fe1576f930c]

/lib64/libc.so.6(clone+0x6d)[0x7fe15637d85d]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7fdfa06a5020): is an invalid pointer

Connection ID (thread ID): 371

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,orderby_uses_equalities=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.

We think the query pointer is invalid, but we will try to print it anyway. 

Query: SHOW CREATE VIEW `ucet_angazma`