MariaDB has been restarted since server crash on 2018-07-18-21: 45: 23.
I want to know what caused the crash.

DB : 10.2.15-MariaDB

OS :

[root@BStonegmdb08 59306]# grep . /etc/*-release

/etc/centos-release:CentOS Linux release 7.3.1611 (Core)

/etc/os-release:NAME="CentOS Linux"

/etc/os-release:VERSION="7 (Core)"

/etc/os-release:ID="centos"

/etc/os-release:ID_LIKE="rhel fedora"

/etc/os-release:VERSION_ID="7"

/etc/os-release:PRETTY_NAME="CentOS Linux 7 (Core)"

/etc/os-release:ANSI_COLOR="0;31"

/etc/os-release:CPE_NAME="cpe:/o:centos:centos:7"

/etc/os-release:HOME_URL="https://www.centos.org/"

/etc/os-release:BUG_REPORT_URL="https://bugs.centos.org/"

/etc/os-release:CENTOS_MANTISBT_PROJECT="CentOS-7"

/etc/os-release:CENTOS_MANTISBT_PROJECT_VERSION="7"

/etc/os-release:REDHAT_SUPPORT_PRODUCT="centos"

/etc/os-release:REDHAT_SUPPORT_PRODUCT_VERSION="7"

/etc/redhat-release:CentOS Linux release 7.3.1611 (Core)

/etc/system-release:CentOS Linux release 7.3.1611 (Core)

kernel-version : 3.10.0-514.26.2.el7.x86_64

– maradb

[root@BStonegmdb08 59306]# cat a.txt

Variable_name Value

aria_block_size 8192

aria_checkpoint_interval 30

aria_checkpoint_log_activity 1048576

aria_encrypt_tables OFF

aria_force_start_after_recovery_failures 0

aria_group_commit none

aria_group_commit_interval 0

aria_log_file_size 1073741824

aria_log_purge_type immediate

aria_max_sort_file_size 9223372036853727232

aria_page_checksum ON

aria_pagecache_age_threshold 300

aria_pagecache_buffer_size 134217728

aria_pagecache_division_limit 100

aria_pagecache_file_hash_size 512

aria_recover_options BACKUP,QUICK

aria_repair_threads 1

aria_sort_buffer_size 268434432

aria_stats_method nulls_unequal

aria_sync_log_dir NEWFILE

aria_used_for_temp_tables ON

auto_increment_increment 1

auto_increment_offset 1

autocommit ON

automatic_sp_privileges ON

back_log 150

basedir /usr/local/mysql

big_tables OFF

binlog_annotate_row_events ON

binlog_cache_size 1048576

binlog_checksum CRC32

binlog_commit_wait_count 0

binlog_commit_wait_usec 100000

binlog_direct_non_transactional_updates OFF

binlog_format MIXED

binlog_optimize_thread_scheduling ON

binlog_row_image FULL

binlog_stmt_cache_size 32768

bulk_insert_buffer_size 8388608

character_set_client utf8mb4

character_set_connection utf8mb4

character_set_database utf8mb4

character_set_filesystem binary

character_set_results utf8mb4

character_set_server utf8mb4

character_set_system utf8

character_sets_dir /usr/local/mariadb-10.2.15-linux-x86_64/share/charsets/

check_constraint_checks ON

collation_connection utf8mb4_general_ci

collation_database utf8mb4_general_ci

collation_server utf8mb4_general_ci

completion_type NO_CHAIN

concurrent_insert AUTO

connect_timeout 10

datadir /data/59306/

date_format %Y-%m-%d

datetime_format %Y-%m-%d %H:%i:%s

deadlock_search_depth_long 15

deadlock_search_depth_short 4

deadlock_timeout_long 50000000

deadlock_timeout_short 10000

debug_no_thread_alarm OFF

default_regex_flags

default_storage_engine InnoDB

default_tmp_storage_engine

default_week_format 0

delay_key_write ON

delayed_insert_limit 100

delayed_insert_timeout 300

delayed_queue_size 1000

div_precision_increment 4

encrypt_binlog OFF

encrypt_tmp_disk_tables OFF

encrypt_tmp_files OFF

enforce_storage_engine

event_scheduler ON

expensive_subquery_limit 100

expire_logs_days 2

explicit_defaults_for_timestamp OFF

extra_max_connections 1

extra_port 0

flush OFF

flush_time 0

foreign_key_checks ON

ft_boolean_syntax + -><()~*:""&|

ft_max_word_len 84

ft_min_word_len 4

ft_query_expansion_limit 20

ft_stopword_file (built-in)

general_log OFF

general_log_file BStonegmdb08.log

group_concat_max_len 1048576

gtid_binlog_pos 0-1281591-49296747

gtid_binlog_state 0-1281591-49296747

gtid_current_pos 0-1281591-49296747

gtid_domain_id 0

gtid_ignore_duplicates OFF

gtid_slave_pos

gtid_strict_mode OFF

have_compress YES

have_crypt YES

have_dynamic_loading YES

have_geometry YES

have_openssl NO

have_profiling YES

have_query_cache YES

have_rtree_keys YES

have_ssl DISABLED

have_symlink YES

histogram_size 0

histogram_type SINGLE_PREC_HB

host_cache_size 678

hostname BStonegmdb08

ignore_builtin_innodb OFF

ignore_db_dirs lost+found

init_connect

init_file

init_slave

innodb_adaptive_flushing ON

innodb_adaptive_flushing_lwm 10.000000

innodb_adaptive_hash_index ON

innodb_adaptive_hash_index_partitions 8

innodb_adaptive_hash_index_parts 8

innodb_adaptive_max_sleep_delay 150000

innodb_autoextend_increment 64

innodb_autoinc_lock_mode 1

innodb_background_scrub_data_check_interval 3600

innodb_background_scrub_data_compressed OFF

innodb_background_scrub_data_interval 604800

innodb_background_scrub_data_uncompressed OFF

innodb_buf_dump_status_frequency 0

innodb_buffer_pool_chunk_size 134217728

innodb_buffer_pool_dump_at_shutdown ON

innodb_buffer_pool_dump_now OFF

innodb_buffer_pool_dump_pct 25

innodb_buffer_pool_filename ib_buffer_pool

innodb_buffer_pool_instances 2

innodb_buffer_pool_load_abort OFF

innodb_buffer_pool_load_at_startup ON

innodb_buffer_pool_load_now OFF

innodb_buffer_pool_populate OFF

innodb_buffer_pool_size 17179869184

innodb_change_buffer_max_size 25

innodb_change_buffering all

innodb_checksum_algorithm crc32

innodb_checksums ON

innodb_cleaner_lsn_age_factor DEPRECATED

innodb_cmp_per_index_enabled OFF

innodb_commit_concurrency 0

innodb_compression_algorithm zlib

innodb_compression_default OFF

innodb_compression_failure_threshold_pct 5

innodb_compression_level 6

innodb_compression_pad_pct_max 50

innodb_concurrency_tickets 5000

innodb_corrupt_table_action deprecated

innodb_data_file_path ibdata1:100M:autoextend

innodb_data_home_dir

innodb_deadlock_detect ON

innodb_default_encryption_key_id 1

innodb_default_row_format dynamic

innodb_defragment OFF

innodb_defragment_fill_factor 0.900000

innodb_defragment_fill_factor_n_recs 20

innodb_defragment_frequency 40

innodb_defragment_n_pages 7

innodb_defragment_stats_accuracy 0

innodb_disable_sort_file_cache OFF

innodb_disallow_writes OFF

innodb_doublewrite OFF

innodb_empty_free_list_algorithm DEPRECATED

innodb_encrypt_log OFF

innodb_encrypt_tables OFF

innodb_encryption_rotate_key_age 1

innodb_encryption_rotation_iops 100

innodb_encryption_threads 0

innodb_fake_changes OFF

innodb_fast_shutdown 1

innodb_fatal_semaphore_wait_threshold 600

innodb_file_format Barracuda

innodb_file_format_check ON

innodb_file_format_max Barracuda

innodb_file_per_table ON

innodb_fill_factor 100

innodb_flush_log_at_timeout 1

innodb_flush_log_at_trx_commit 0

innodb_flush_method O_DIRECT

innodb_flush_neighbors 1

innodb_flush_sync ON

innodb_flushing_avg_loops 30

innodb_force_load_corrupted OFF

innodb_force_primary_key OFF

innodb_force_recovery 0

innodb_foreground_preflush DEPRECATED

innodb_ft_aux_table

innodb_ft_cache_size 8000000

innodb_ft_enable_diag_print OFF

innodb_ft_enable_stopword ON

innodb_ft_max_token_size 84

innodb_ft_min_token_size 3

innodb_ft_num_word_optimize 2000

innodb_ft_result_cache_limit 2000000000

innodb_ft_server_stopword_table

innodb_ft_sort_pll_degree 2

innodb_ft_total_cache_size 640000000

innodb_ft_user_stopword_table

innodb_idle_flush_pct 100

innodb_immediate_scrub_data_uncompressed OFF

innodb_instrument_semaphores OFF

innodb_io_capacity 2000

innodb_io_capacity_max 20000

innodb_kill_idle_transaction 0

innodb_large_prefix ON

innodb_lock_schedule_algorithm vats

innodb_lock_wait_timeout 50

innodb_locking_fake_changes OFF

innodb_locks_unsafe_for_binlog OFF

innodb_log_arch_dir

innodb_log_arch_expire_sec 0

innodb_log_archive OFF

innodb_log_block_size 0

innodb_log_buffer_size 16777216

innodb_log_checksum_algorithm DEPRECATED

innodb_log_checksums ON

innodb_log_compressed_pages ON

innodb_log_file_size 1073741824

innodb_log_files_in_group 3

innodb_log_group_home_dir /log/59306

innodb_log_write_ahead_size 8192

innodb_lru_scan_depth 1024

innodb_max_bitmap_file_size 0

innodb_max_changed_pages 0

innodb_max_dirty_pages_pct 90.000000

innodb_max_dirty_pages_pct_lwm 0.000000

innodb_max_purge_lag 0

innodb_max_purge_lag_delay 0

innodb_max_undo_log_size 10485760

innodb_mirrored_log_groups 0

innodb_monitor_disable

innodb_monitor_enable

innodb_monitor_reset

innodb_monitor_reset_all

innodb_mtflush_threads 8

innodb_old_blocks_pct 37

innodb_old_blocks_time 1000

innodb_online_alter_log_max_size 134217728

innodb_open_files 2048

innodb_optimize_fulltext_only OFF

innodb_page_cleaners 2

innodb_page_size 16384

innodb_prefix_index_cluster_optimization OFF

innodb_print_all_deadlocks OFF

innodb_purge_batch_size 300

innodb_purge_rseg_truncate_frequency 128

innodb_purge_threads 4

innodb_random_read_ahead OFF

innodb_read_ahead_threshold 56

innodb_read_io_threads 8

innodb_read_only OFF

innodb_replication_delay 0

innodb_rollback_on_timeout OFF

innodb_rollback_segments 35

innodb_sched_priority_cleaner 0

innodb_scrub_log OFF

innodb_scrub_log_speed 256

innodb_show_locks_held 0

innodb_show_verbose_locks 0

innodb_sort_buffer_size 1048576

innodb_spin_wait_delay 6

innodb_stats_auto_recalc ON

innodb_stats_include_delete_marked OFF

innodb_stats_method nulls_equal

innodb_stats_modified_counter 0

innodb_stats_on_metadata OFF

innodb_stats_persistent ON

innodb_stats_persistent_sample_pages 20

innodb_stats_sample_pages 8

innodb_stats_traditional ON

innodb_stats_transient_sample_pages 8

innodb_status_output OFF

innodb_status_output_locks OFF

innodb_strict_mode ON

innodb_support_xa ON

innodb_sync_array_size 1

innodb_sync_spin_loops 30

innodb_table_locks ON

innodb_temp_data_file_path ibtmp1:12M:autoextend

innodb_thread_concurrency 16

innodb_thread_sleep_delay 0

innodb_tmpdir

innodb_track_changed_pages OFF

innodb_track_redo_log_now OFF

innodb_undo_directory /data/59306

innodb_undo_log_truncate ON

innodb_undo_logs 35

innodb_undo_tablespaces 0

innodb_use_atomic_writes ON

innodb_use_fallocate OFF

innodb_use_global_flush_log_at_trx_commit OFF

innodb_use_mtflush OFF

innodb_use_native_aio ON

innodb_use_stacktrace OFF

innodb_use_trim ON

innodb_version 5.7.22

innodb_write_io_threads 8

interactive_timeout 28800

join_buffer_size 262144

join_buffer_space_limit 2097152

join_cache_level 2

keep_files_on_create OFF

key_buffer_size 33554432

key_cache_age_threshold 300

key_cache_block_size 1024

key_cache_division_limit 100

key_cache_file_hash_size 512

key_cache_segments 0

large_files_support ON

large_page_size 0

large_pages OFF

lc_messages en_US

lc_messages_dir

lc_time_names en_US

license GPL

local_infile ON

lock_wait_timeout 86400

locked_in_memory OFF

log_bin ON

log_bin_basename /log/59306/mysql-bin

log_bin_compress OFF

log_bin_compress_min_len 256

log_bin_index /log/59306/mysql-bin.index

log_bin_trust_function_creators ON

log_error /data/59306/BStonegmdb08.err

log_output FILE,TABLE

log_queries_not_using_indexes OFF

log_slave_updates OFF

log_slow_admin_statements ON

log_slow_filter admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk

log_slow_rate_limit 1

log_slow_slave_statements ON

log_slow_verbosity

log_tc_size 24576

log_warnings 2

long_query_time 1.000000

low_priority_updates OFF

lower_case_file_system OFF

lower_case_table_names 1

master_verify_checksum ON

max_allowed_packet 16777216

max_binlog_cache_size 18446744073709547520

max_binlog_size 1073741824

max_binlog_stmt_cache_size 18446744073709547520

max_connect_errors 99999

max_connections 1500

max_delayed_threads 20

max_digest_length 1024

max_error_count 64

max_heap_table_size 16777216

max_insert_delayed_threads 20

max_join_size 18446744073709551615

max_length_for_sort_data 1024

max_long_data_size 16777216

max_prepared_stmt_count 16382

max_recursive_iterations 4294967295

max_relay_log_size 1073741824

max_seeks_for_key 4294967295

max_session_mem_used 9223372036854775807

max_sort_length 1024

max_sp_recursion_depth 0

max_statement_time 0.000000

max_tmp_tables 32

max_user_connections 0

max_write_lock_count 4294967295

metadata_locks_cache_size 1024

metadata_locks_hash_instances 8

min_examined_row_limit 0

mrr_buffer_size 262144

multi_range_count 256

myisam_block_size 1024

myisam_data_pointer_size 6

myisam_max_sort_file_size 9223372036853727232

myisam_mmap_size 18446744073709551615

myisam_recover_options BACKUP,QUICK

myisam_repair_threads 1

myisam_sort_buffer_size 134216704

myisam_stats_method NULLS_UNEQUAL

myisam_use_mmap OFF

mysql56_temporal_format ON

net_buffer_length 16384

net_read_timeout 30

net_retry_count 10

net_write_timeout 60

old OFF

old_alter_table OFF

old_mode

old_passwords OFF

open_files_limit 65000

optimizer_prune_level 1

optimizer_search_depth 62

optimizer_selectivity_sampling_limit 100

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=on,condition_pushdown_for_derived=on

optimizer_use_condition_selectivity 1

performance_schema OFF

performance_schema_accounts_size -1

performance_schema_digests_size -1

performance_schema_events_stages_history_long_size -1

performance_schema_events_stages_history_size -1

performance_schema_events_statements_history_long_size -1

performance_schema_events_statements_history_size -1

performance_schema_events_waits_history_long_size -1

performance_schema_events_waits_history_size -1

performance_schema_hosts_size -1

performance_schema_max_cond_classes 80

performance_schema_max_cond_instances -1

performance_schema_max_digest_length 1024

performance_schema_max_file_classes 50

performance_schema_max_file_handles 32768

performance_schema_max_file_instances -1

performance_schema_max_mutex_classes 200

performance_schema_max_mutex_instances -1

performance_schema_max_rwlock_classes 40

performance_schema_max_rwlock_instances -1

performance_schema_max_socket_classes 10

performance_schema_max_socket_instances -1

performance_schema_max_stage_classes 150

performance_schema_max_statement_classes 188

performance_schema_max_table_handles -1

performance_schema_max_table_instances -1

performance_schema_max_thread_classes 50

performance_schema_max_thread_instances -1

performance_schema_session_connect_attrs_size -1

performance_schema_setup_actors_size 100

performance_schema_setup_objects_size 100

performance_schema_users_size -1

pid_file /data/59306/mysql.pid

plugin_dir /usr/local/mysql/lib/plugin/

plugin_maturity unknown

port 59306

preload_buffer_size 32768

profiling OFF

profiling_history_size 15

progress_report_time 5

protocol_version 10

query_alloc_block_size 16384

query_cache_limit 1048576

query_cache_min_res_unit 4096

query_cache_size 0

query_cache_strip_comments OFF

query_cache_type OFF

query_cache_wlock_invalidate OFF

query_prealloc_size 24576

range_alloc_block_size 4096

read_binlog_speed_limit 0

read_buffer_size 131072

read_only OFF

read_rnd_buffer_size 262144

relay_log

relay_log_basename

relay_log_index

relay_log_info_file relay-log.info

relay_log_purge ON

relay_log_recovery OFF

relay_log_space_limit 0

replicate_annotate_row_events ON

replicate_do_db

replicate_do_table

replicate_events_marked_for_skip REPLICATE

replicate_ignore_db

replicate_ignore_table

replicate_wild_do_table

replicate_wild_ignore_table

report_host 10.161.131.220

report_password

report_port 59306

report_user

rowid_merge_buff_size 8388608

secure_auth ON

secure_file_priv

server_id 1281591

session_track_schema ON

session_track_state_change OFF

session_track_system_variables

session_track_transaction_info OFF

skip_external_locking ON

skip_name_resolve ON

skip_networking OFF

skip_show_database OFF

slave_compressed_protocol OFF

slave_ddl_exec_mode IDEMPOTENT

slave_domain_parallel_threads 0

slave_exec_mode STRICT

slave_load_tmpdir /tmp

slave_max_allowed_packet 1073741824

slave_net_timeout 60

slave_parallel_max_queued 131072

slave_parallel_mode conservative

slave_parallel_threads 0

slave_parallel_workers 0

slave_run_triggers_for_rbr NO

slave_skip_errors OFF

slave_sql_verify_checksum ON

slave_transaction_retries 10

slave_type_conversions

slow_launch_time 2

slow_query_log ON

slow_query_log_file BStonegmdb08-slow.log

socket /tmp/mysql_59306.sock

sort_buffer_size 2097152

sql_auto_is_null OFF

sql_big_selects ON

sql_buffer_result OFF

sql_log_bin ON

sql_log_off OFF

sql_mode STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

sql_notes ON

sql_quote_show_create ON

sql_safe_updates OFF

sql_select_limit 18446744073709551615

sql_slave_skip_counter 0

sql_warnings OFF

ssl_ca

ssl_capath

ssl_cert

ssl_cipher

ssl_crl

ssl_crlpath

ssl_key

standard_compliant_cte ON

storage_engine InnoDB

stored_program_cache 256

strict_password_validation ON

sync_binlog 0

sync_frm ON

sync_master_info 1

sync_relay_log 10000

sync_relay_log_info 10000

system_time_zone HKT

table_definition_cache 2048

table_open_cache 2048

table_open_cache_instances 8

thread_cache_size 256

thread_concurrency 10

thread_handling pool-of-threads

thread_pool_idle_timeout 60

thread_pool_max_threads 65536

thread_pool_oversubscribe 3

thread_pool_prio_kickup_timer 1000

thread_pool_priority auto

thread_pool_size 20

thread_pool_stall_limit 500

thread_stack 299008

time_format %H:%i:%s

time_zone SYSTEM

timed_mutexes OFF

tmp_disk_table_size 18446744073709551615

tmp_memory_table_size 16777216

tmp_table_size 16777216

tmpdir /tmp

transaction_alloc_block_size 8192

transaction_prealloc_size 4096

tx_isolation READ-COMMITTED

tx_read_only OFF

unique_checks ON

updatable_views_with_limit YES

use_stat_tables NEVER

userstat OFF

version 10.2.15-MariaDB-log

version_comment MariaDB Server

version_compile_machine x86_64

version_compile_os Linux

version_malloc_library system

version_ssl_library YaSSL 2.4.4

wait_timeout 28800

wsrep_osu_method TOI

wsrep_auto_increment_control ON

wsrep_causal_reads OFF

wsrep_certify_nonpk ON

wsrep_cluster_address

wsrep_cluster_name my_wsrep_cluster

wsrep_convert_lock_to_trx OFF

wsrep_data_home_dir /data/59306/

wsrep_dbug_option

wsrep_debug OFF

wsrep_desync OFF

wsrep_dirty_reads OFF

wsrep_drupal_282555_workaround OFF

wsrep_forced_binlog_format NONE

wsrep_gtid_domain_id 0

wsrep_gtid_mode OFF

wsrep_load_data_splitting ON

wsrep_log_conflicts OFF

wsrep_max_ws_rows 0

wsrep_max_ws_size 2147483647

wsrep_mysql_replication_bundle 0

wsrep_node_address

wsrep_node_incoming_address AUTO

wsrep_node_name BStonegmdb08

wsrep_notify_cmd

wsrep_on OFF

wsrep_patch_version wsrep_25.23

wsrep_provider none

wsrep_provider_options

wsrep_recover OFF

wsrep_reject_queries NONE

wsrep_replicate_myisam OFF

wsrep_restart_slave OFF

wsrep_retry_autocommit 1

wsrep_slave_fk_checks ON

wsrep_slave_uk_checks OFF

wsrep_slave_threads 1

wsrep_sst_auth

wsrep_sst_donor

wsrep_sst_donor_rejects_queries OFF

wsrep_sst_method rsync

wsrep_sst_receive_address AUTO

wsrep_start_position 00000000-0000-0000-0000-000000000000:-1

wsrep_sync_wait 0

– maria db log

2018-07-18 21:37:18 140668366944000 [Warning] Aborted connection 14061 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:38:18 140686421403392 [Warning] Aborted connection 14063 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:39:18 140686421403392 [Warning] Aborted connection 14065 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:40:18 140686420797184 [Warning] Aborted connection 14067 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:41:18 140686422009600 [Warning] Aborted connection 14068 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:42:18 140686422009600 [Warning] Aborted connection 14070 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:43:18 140686420797184 [Warning] Aborted connection 14072 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:44:18 140668237940480 [Warning] Aborted connection 14074 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Uses event mutexes

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Compressed tables use zlib 1.2.3

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Using Linux native AIO

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Number of pools: 1

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Using SSE2 crc32 instructions

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Initializing buffer pool, total size = 16G, instances = 2, chunk size = 128M

2018-07-18 21:47:21 139827621287744 [Note] InnoDB: Completed initialization of buffer pool

2018-07-18 21:47:22 139808737433344 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2018-07-18 21:47:22 139827621287744 [Note] InnoDB: Highest supported file format is Barracuda.

2018-07-18 21:47:22 139827621287744 [Note] InnoDB: Starting crash recovery from checkpoint LSN=130927709873

2018-07-18 21:47:22 139827621287744 [Note] InnoDB: Starting final batch to recover 4256 pages from redo log.

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: Last binlog file '/log/59306/mysql-bin.000574', position 67318967

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: 35 out of 35 rollback segments are active.

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: Creating shared tablespace for temporary tables

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: File './ibtmp1' size is now 12 MB.

2018-07-18 21:47:23 139827621287744 [Note] InnoDB: 5.7.22 started; log sequence number 130935799686

2018-07-18 21:47:23 139809087543040 [Note] InnoDB: Loading buffer pool(s) from /data/59306/ib_buffer_pool

2018-07-18 21:47:23 139827621287744 [Note] Plugin 'FEEDBACK' is disabled.

2018-07-18 21:47:23 139827621287744 [Note] Recovering after a crash using /log/59306/mysql-bin

2018-07-18 21:47:23 139809087543040 [Note] InnoDB: Buffer pool(s) load completed at 180718 21:47:23

2018-07-18 21:47:27 139827621287744 [Note] Starting crash recovery...

2018-07-18 21:47:27 139827621287744 [Note] Crash recovery finished.

2018-07-18 21:47:27 139827621287744 [Note] Server socket created on IP: '::'.

2018-07-18 21:47:27 139827621287744 [Warning] 'proxies_priv' entry '@% root@bstonegmdb08' ignored in --skip-name-resolve mode.

2018-07-18 21:47:27 139827559905024 [Note] Event Scheduler: scheduler thread started with id 7

2018-07-18 21:47:27 139827621287744 [Note] Reading of all Master_info entries succeded

2018-07-18 21:47:27 139827621287744 [Note] Added new Master_info '' to hash table

2018-07-18 21:47:27 139827621287744 [Note] /usr/local/mysql/bin/mysqld: ready for connections.

Version: '10.2.15-MariaDB-log' socket: '/tmp/mysql_59306.sock' port: 59306 MariaDB Server

2018-07-18 21:48:24 139827294033664 [Note] Start binlog_dump to slave_server(1282071), pos(mysql-bin.000574, 71369004)

2018-07-18 21:48:56 139827293124352 [Warning] Aborted connection 12 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:49:27 139827294336768 [Note] Start binlog_dump to slave_server(1282071), pos(mysql-bin.000574, 71369004)

2018-07-18 21:49:56 139827292821248 [Warning] Aborted connection 14 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:50:56 139827293730560 [Warning] Aborted connection 15 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

2018-07-18 21:51:56 139827291911936 [Warning] Aborted connection 17 to db: 'unconnected' user: 'unauthenticated' host: 'connecting host' (Can't get hostname for your address)

– crash dump log

KERNEL: vmlinux

DUMPFILE: /var/crash/127.0.0.1-2018-07-18-21:45:23/vmcore [PARTIAL DUMP]

CPUS: 20

DATE: Wed Jul 18 21:45:08 2018

UPTIME: 17 days, 14:31:08

LOAD AVERAGE: 0.18, 0.15, 0.14

TASKS: 453

NODENAME: BStonegmdb08

RELEASE: 3.10.0-514.26.2.el7.x86_64

VERSION: #1 SMP Tue Jul 4 15:04:05 UTC 2017

MACHINE: x86_64 (2399 Mhz)

MEMORY: 31.9 GB

PANIC: "BUG: unable to handle kernel paging request at 000000000102005a"

PID: 162990

COMMAND: "mysqld"

TASK: ffff880663758fb0 [THREAD_INFO: ffff88064ea20000]

CPU: 13

STATE: TASK_RUNNING (PANIC)

crash> bt

PID: 162990 TASK: ffff880663758fb0 CPU: 13 COMMAND: "mysqld"

#0 [ffff88064ea23858] machine_kexec at ffffffff81059beb

#1 [ffff88064ea238b8] __crash_kexec at ffffffff81105822

#2 [ffff88064ea23988] crash_kexec at ffffffff81105910

#3 [ffff88064ea239a0] oops_end at ffffffff81690008

#4 [ffff88064ea239c8] no_context at ffffffff8167fc96

#5 [ffff88064ea23a18] __bad_area_nosemaphore at ffffffff8167fd2c

#6 [ffff88064ea23a60] bad_area_nosemaphore at ffffffff8167fe96

#7 [ffff88064ea23a70] __do_page_fault at ffffffff81692e4e

#8 [ffff88064ea23ad0] do_page_fault at ffffffff81692ff5

#9 [ffff88064ea23b00] page_fault at ffffffff8168f208

[exception RIP: unknown or invalid address]

RIP: 000000000102005a RSP: ffff88064ea23bb8 RFLAGS: 00010246

RAX: ffffea00169e8e00 RBX: 000000003c6f2000 RCX: ffff88064ea23fd8

RDX: 0000000000000000 RSI: ffff8806c262af58 RDI: 0000000000000003

RBP: 000000000102005a R8: 0000000000000002 R9: ffffea00169e8e1c

R10: ffff88064ea23b60 R11: 0000000000000000 R12: ffff88080c336d48

R13: 000000000102005a R14: 000000000003c6f2 R15: 00000000000000d0

ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018

#10 [ffff88064ea23bc0] grab_cache_page_write_begin at ffffffff811819c2

#11 [ffff88064ea23c00] xfs_vm_write_begin at ffffffffa04061b4 [xfs]

#12 [ffff88064ea23c48] generic_file_buffered_write at ffffffff81181bbe

#13 [ffff88064ea23d10] xfs_file_buffered_aio_write at ffffffffa0413cdb [xfs]

#14 [ffff88064ea23dc0] xfs_file_aio_write at ffffffffa0413fbd [xfs]

#15 [ffff88064ea23e18] do_sync_write at ffffffff811fe18d

#16 [ffff88064ea23ef0] vfs_write at ffffffff811fe9fd

#17 [ffff88064ea23f30] sys_pwrite64 at ffffffff811ff6d2

#18 [ffff88064ea23f80] system_call_fastpath at ffffffff81697809

RIP: 00007ff42f9c2d63 RSP: 00007fefeb9dda18 RFLAGS: 00000246

RAX: 0000000000000012 RBX: ffffffff81697809 RCX: 0000000000239400

RDX: 0000000000239400 RSI: 00007fefeb9df200 RDI: 000000000000000c

RBP: 00007fefeb9dd140 R8: 000000003c656c00 R9: 00007fefeb9dd598

R10: 000000003c656c00 R11: 0000000000000293 R12: 00007fefeb9df200

R13: 0000000000239400 R14: 000000000000000c R15: 00007fefeb9df200

ORIG_RAX: 0000000000000012 CS: 0033 SS: 002b