Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Incomplete
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10.3.12
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Debian GNU/Linux buster/sid
Description
MariaDB/MySQL keeps constantly crashing. I am currently trying to rescue a database using MySQL dump 10.17, but
mysqldump: Got error: 2013: "Lost connection to MySQL server during query" when using LOCK TABLES
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Full log:
2019-02-22 10:14:02 0x7f104844c700 InnoDB: Assertion failure in file /build/mariadb-10.3-L3F6cy/mariadb-10.3-10.3.12/storage/innobase/btr/btr0pcur.cc line 459
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InnoDB: Failing assertion: page_is_comp(next_page) == page_is_comp(page)
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InnoDB: We intentionally generate a memory trap.
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InnoDB: Submit a detailed bug report to https://jira.mariadb.org/
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InnoDB: If you get repeated assertion failures or crashes, even
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InnoDB: immediately after the mysqld startup, there may be
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InnoDB: corruption in the InnoDB tablespace. Please refer to
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InnoDB: https://mariadb.com/kb/en/library/innodb-recovery-modes/
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InnoDB: about forcing recovery.
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190222 10:14:02 [ERROR] mysqld got signal 6 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see https://mariadb.com/kb/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.3.12-MariaDB-2
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key_buffer_size=16777216
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read_buffer_size=131072
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max_used_connections=1
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max_threads=153
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thread_count=7
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 352701 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x55aa81d57cb8
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x7f104844bdd8 thread_stack 0x30000
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/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55aa7e6736be]
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/usr/sbin/mysqld(handle_fatal_signal+0x505)[0x55aa7e1e5935]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x126e0)[0x7f105ab316e0]
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/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x10b)[0x7f1059da08bb]
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/lib/x86_64-linux-gnu/libc.so.6(abort+0x121)[0x7f1059d8b535]
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/usr/sbin/mysqld(+0x4bc2d9)[0x55aa7df332d9]
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/usr/sbin/mysqld(+0x4bfc88)[0x55aa7df36c88]
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/usr/sbin/mysqld(+0x99c530)[0x55aa7e413530]
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/usr/sbin/mysqld(+0x99dcbb)[0x55aa7e414cbb]
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/usr/sbin/mysqld(+0x95d0e8)[0x55aa7e3d40e8]
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/usr/sbin/mysqld(+0x95de79)[0x55aa7e3d4e79]
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/usr/sbin/mysqld(+0xa72afa)[0x55aa7e4e9afa]
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/usr/sbin/mysqld(+0x8e58d1)[0x55aa7e35c8d1]
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/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcijP11st_mem_rootP4ListI6StringE+0x4a)[0x55aa7e1e9ffa]
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/usr/sbin/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPK25st_mysql_const_lex_stringjjjP5TABLEbP4ListI6StringE+0x979)[0x55aa7e0c9989]
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/usr/sbin/mysqld(_Z10open_tableP3THDP10TABLE_LISTP18Open_table_context+0xae3)[0x55aa7dfc1083]
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/usr/sbin/mysqld(_Z11open_tablesP3THDRK14DDL_options_stPP10TABLE_LISTPjjP19Prelocking_strategy+0xc52)[0x55aa7dfc4102]
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/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x7229)[0x55aa7e01e679]
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/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x246)[0x55aa7e01f986]
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/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1ef0)[0x55aa7e022680]
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/usr/sbin/mysqld(_Z10do_commandP3THD+0x170)[0x55aa7e0232c0]
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/usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x20a)[0x55aa7e0f14ea]
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/usr/sbin/mysqld(handle_one_connection+0x3d)[0x55aa7e0f168d]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x7fa3)[0x7f105ab26fa3]
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/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7f1059e6280f]
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Trying to get some variables.
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Some pointers may be invalid and cause the dump to abort.
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Query (0x55aa81d67aa0): LOCK TABLES `mcps1_log_download` READ /*!32311 LOCAL */,`mcps1_log_upload` READ /*!32311 LOCAL */,`mcps1_login` READ /*!32311 LOCAL */,`mcps1_match` READ /*!32311 LOCAL */,`mcps1_package` READ /*!32311 LOCAL */,`mcps1_package_file` READ /*!32311 LOCAL */,`mcps1_package_file_to_server` READ /*!32311 LOCAL */,`mcps1_server` READ /*!32311 LOCAL */,`shop1_account` READ /*!32311 LOCAL */,`shop1_address` READ /*!32311 LOCAL */,`shop1_currency` READ /*!32311 LOCAL */,`shop1_function` READ /*!32311 LOCAL */,`shop1_function_to_product` READ /*!32311 LOCAL */,`shop1_help` READ /*!32311 LOCAL */,`shop1_legal` READ /*!32311 LOCAL */,`shop1_license` READ /*!32311 LOCAL */,`shop1_license_extension` READ /*!32311 LOCAL */,`shop1_license_log` READ /*!32311 LOCAL */,`shop1_license_transfer` READ /*!32311 LOCAL */,`shop1_location_cache` READ /*!32311 LOCAL */,`shop1_mail` READ /*!32311 LOCAL */,`shop1_mail_attachment` READ /*!32311 LOCAL */,`shop1_membership` READ /*!32311 LOCAL */,`shop1_membership_subscription` READ /*!32311 LOCAL */,`shop1_notification` READ /*!32311 LOCAL */,`shop1_order` READ /*!32311 LOCAL */,`shop1_order_discount` READ /*!32311 LOCAL */,`shop1_order_file` READ /*!32311 LOCAL */,`shop1_order_log` READ /*!32311 LOCAL */,`shop1_order_modifier` READ /*!32311 LOCAL */,`shop1_order_option` READ /*!32311 LOCAL */,`shop1_order_option_value` READ /*!32311 LOCAL */,`shop1_order_product` READ /*!32311 LOCAL */,`shop1_order_rollback` READ /*!32311 LOCAL */,`shop1_payment_notification_log` READ /*!32311 LOCAL */,`shop1_product` READ /*!32311 LOCAL */,`shop1_product_code` READ /*!32311 LOCAL */,`shop1_product_option` READ /*!32311 LOCAL */,`shop1_product_page` READ /*!32311 LOCAL */,`shop1_product_review` READ /*!32311 LOCAL */,`shop1_product_review_rating` READ /*!32311 LOCAL */,`shop1_product_to_category` READ /*!32311 LOCAL */,`shop1_serial` READ /*!32311 LOCAL */,`shop1_shipping` READ /*!32311 LOCAL */,`shop1_storage` READ /*!32311 LOCAL */,`shop1_storage_log` READ /*!32311 LOCAL */,`shop1_support` READ /*!32311 LOCAL */,`shop1_tax_category` READ /*!32311 LOCAL */,`shop1_voucher` READ /*!32311 LOCAL */,`shop1_wcf_package` READ /*!32311 LOCAL */,`shop1_wcf_package_version` READ /*!32311 LOCAL */,`shop1_wcf_package_version_to_server` READ /*!32311 LOCAL */,`shop1_wcf_server` READ /*!32311 LOCAL */,`wbb1_board` READ /*!32311 LOCAL */,`wbb1_board_last_post` READ /*!32311 LOCAL */,`wbb1_post` READ /*!32311 LOCAL */,`wbb1_post_search_index` READ /*!32311 LOCAL */,`wbb1_rss_feed` READ /*!32311 LOCAL */,`wbb1_rss_feed_log` READ /*!32311 LOCAL */,`wbb1_thread` READ /*!32311 LOCAL */,`wbb1_thread_announcement` READ /*!32311 LOCAL */,`wbb1_thread_copy` READ /*!32311 LOCAL */,`wbb1_thread_similar` READ /*!32311 LOCAL */,`wcf1_acl_option` READ /*!32311 LOCAL */,`wcf1_acl_option_category` READ /*!32311 LOCAL */,`wcf1_acl_option_to_group` READ /*!32311 LOCAL */,`wcf1_acl_option_to_user` READ /*!32311 LOCAL */,`wcf1_acl_simple_to_group` READ /*!32311 LOCAL */,`wcf1_acl_simple_to_user` READ /*!32311 LOCAL */,`wcf1_acp_menu_item` READ /*!32311 LOCAL */,`wcf1_acp_search_provider` READ /*!32311 LOCAL */,`wcf1_acp_session` READ /*!32311 LOCAL */,`wcf1_acp_session_access_log` READ /*!32311 LOCAL */,`wcf1_acp_session_log` READ /*!32311 LOCAL */,`wcf1_acp_session_virtual` READ /*!32311 LOCAL */,`wcf1_acp_template` READ /*!32311 LOCAL */,`wcf1_ad` READ /*!32311 LOCAL */,`wcf1_amazon_ses_log` READ /*!32311 LOCAL */,`wcf1_amazon_sns_log` READ /*!32311 LOCAL */,`wcf1_application` READ /*!32311 LOCAL */,`wcf1_article` READ /*!32311 LOCAL */,`wcf1_article_content` READ /*!32311 LOCAL */,`wcf1_article_search_index` READ /*!32311 LOCAL */,`wcf1_article_version` READ /*!32311 LOCAL */,`wcf1_attachment` READ /*!32311 LOCAL */,`wcf1_background_job` READ /*!32311 LOCAL */,`wcf1_bbcode` READ /*!32311 LOCAL */,`wcf1_bbcode_attribute` READ /*!32311 LOCAL */,`wcf1_bbcode_image_whitelist` READ /*!32311 LOCAL */,`wcf1_bbcode_media_provider` READ /*!32311 LOCAL */,`wcf1_bbcode_media_whitelist` READ /*!32311 LOCAL */,`wcf1_box` READ /*!32311 LOCAL */,`wcf1_box_content` READ /*!32311 LOCAL */,`wcf1_box_to_page` READ /*!32311 LOCAL */,`wcf1_box_version` READ /*!32311 LOCAL */,`wcf1_captcha_question` READ /*!32311 LOCAL */,`wcf1_category` READ /*!32311 LOCAL */,`wcf1_cli_history` READ /*!32311 LOCAL */,`wcf1_clipboard_action` READ /*!32311 LOCAL */,`wcf1_clipboard_item` READ /*!32311 LOCAL */,`wcf1_clipboard_page` READ /*!32311 LOCAL */,`wcf1_comment` READ /*!32311 LOCAL */,`wcf1_comment_response` READ /*!32311 LOCAL */,`wcf1_condition` READ /*!32311 LOCAL */,`wcf1_contact_option` READ /*!32311 LOCAL */,`wcf1_contact_recipient` READ /*!32311 LOCAL */,`wcf1_conversation` READ /*!32311 LOCAL */,`wcf1_conversation_label` READ /*!32311 LOCAL */,`wcf1_conversation_label_to_object` READ /*!32311 LOCAL */,`wcf1_conversation_message` READ /*!32311 LOCAL */,`wcf1_conversation_message_search_index` READ /*!32311 LOCAL */,`wcf1_conversation_to_user` READ /*!32311 LOCAL */,`wcf1_core_object` READ /*!32311 LOCAL */,`wcf1_cronjob` READ /*!32311 LOCAL */,`wcf1_cronjob_log` READ /*!32311 LOCAL */,`wcf1_devtools_project` READ /*!32311 LOCAL */,`wcf1_disposable_email_domain` READ /*!32311 LOCAL */,`wcf1_edit_history_entry` READ /*!32311 LOCAL */,`wcf1_event_listener` READ /*!32311 LOCAL */,`wcf1_gdpr_export_log` READ /*!32311 LOCAL */,`wcf1_import_mapping` READ /*!32311 LOCAL */,`wcf1_infraction_suspension` READ /*!32311 LOCAL */,`wcf1_infraction_warning` READ /*!32311 LOCAL */,`wcf1_label` READ /*!32311 LOCAL */,`wcf1_label_group` READ /*!32311 LOCAL */,`wcf1_label_group_to_object` READ /*!32311 LOCAL */,`wcf1_label_object` READ /*!32311 LOCAL */,`wcf1_language` READ /*!32311 LOCAL */,`wcf1_language_category` READ /*!32311 LOCAL */,`wcf1_language_item` READ /*!32311 LOCAL */,`wcf1_like` READ /*!32311 LOCAL */,`wcf1_like_object` READ /*!32311 LOCAL */,`wcf1_media` READ /*!32311 LOCAL */,`wcf1_media_content` READ /*!32311 LOCAL */,`wcf1_menu` READ /*!32311 LOCAL */,`wcf1_menu_item` READ /*!32311 LOCAL */,`wcf1_message_embedded_object` READ /*!32311 LOCAL */,`wcf1_moderation_queue` READ /*!32311 LOCAL */,`wcf1_moderation_queue_to_user` READ /*!32311 LOCAL */,`wcf1_modification_log` READ /*!32311 LOCAL */,`wcf1_notice` READ /*!32311 LOCAL */,`wcf1_notice_dismissed` READ /*!32311 LOCAL */,`wcf1_object_type` READ /*!32311 LOCAL */,`wcf1_object_type_definition` READ /*!32311 LOCAL */,`wcf1_option` READ /*!32311 LOCAL */,`wcf1_option_category` READ /*!32311 LOCAL */,`wcf1_package` READ /*!32311 LOCAL */,`wcf1_package_compatibility` READ /*!32311 LOCAL */,`wcf1_package_exclusion` READ /*!32311 LOCAL */,`wcf1_package_installation_file_log` READ /*!32311 LOCAL */,`wcf1_package_installation_form` READ /*!32311 LOCAL */,`wcf1_package_installation_node` READ /*!32311 LOCAL */,`wcf1_package_installation_plugin` READ /*!32311 LOCAL */,`wcf1_package_installation_queue` READ /*!32311 LOCAL */,`wcf1_package_installation_sql_log` READ /*!32311 LOCAL */,`wcf1_package_requirement` READ /*!32311 LOCAL */,`wcf1_package_update` READ /*!32311 LOCAL */,`wcf1_package_update_compatibility` READ /*!32311 LOCAL */,`wcf1_package_update_exclusion` READ /*!32311 LOCAL */,`wcf1_package_update_fromversion` READ /*!32311 LOCAL */,`wcf1_package_update_optional` READ /*!32311 LOCAL */,`wcf1_package_update_requirement` READ /*!32311 LOCAL */,`wcf1_package_update_server` READ /*!32311 LOCAL */,`wcf1_package_update_version` READ /*!32311 LOCAL */,`wcf1_page` READ /*!32311 LOCAL */,`wcf1_page_box_order` READ /*!32311 LOCAL */,`wcf1_page_content` READ /*!32311 LOCAL */,`wcf1_page_search_index` READ /*!32311 LOCAL */,`wcf1_page_sort` READ /*!32311 LOCAL */,`wcf1_page_version` READ /*!32311 LOCAL */,`wcf1_paid_subscription` READ /*!32311 LOCAL */,`wcf1_paid_subscription_transaction_log` READ /*!32311 LOCAL */,`wcf1_paid_subscription_user` READ /*!32311 LOCAL */,`wcf1_plugin_store_file` READ /*!32311 LOCAL */,`wcf1_poll` READ /*!32311 LOCAL */,`wcf1_poll_option` READ /*!32311 LOCAL */,`wcf1_poll_option_vote` READ /*!32311 LOCAL */,`wcf1_registry` READ /*!32311 LOCAL */,`wcf1_search` READ /*!32311 LOCAL */,`wcf1_search_index_4be2a611` READ /*!32311 LOCAL */,`wcf1_search_index_b699e43b` READ /*!32311 LOCAL */,`wcf1_search_keyword` READ /*!32311 LOCAL */,`wcf1_session` READ /*!32311 LOCAL */,`wcf1_session_virtual` READ /*!32311 LOCAL */,`wcf1_smiley` READ /*!32311 LOCAL */,`wcf1_spider` READ /*!32311 LOCAL */,`wcf1_stat_daily` READ /*!32311 LOCAL */,`wcf1_steam_id` READ /*!32311 LOCAL */,`wcf1_style` READ /*!32311 LOCAL */,`wcf1_style_google_font` READ /*!32311 LOCAL */,`wcf1_style_variable` READ /*!32311 LOCAL */,`wcf1_style_variable_value` READ /*!32311 LOCAL */,`wcf1_tag` READ /*!32311 LOCAL */,`wcf1_tag_to_object` READ /*!32311 LOCAL */,`wcf1_template` READ /*!32311 LOCAL */,`wcf1_template_group` READ /*!32311 LOCAL */,`wcf1_template_listener` READ /*!32311 LOCAL */,`wcf1_tracked_visit` READ /*!32311 LOCAL */,`wcf1_tracked_visit_type` READ /*!32311 LOCAL */,`wcf1_trophy` READ /*!32311 LOCAL */,`wcf1_user` READ /*!32311 LOCAL */,`wcf1_user_activity_event` READ /*!32311 LOCAL */,`wcf1_user_activity_point` READ /*!32311 LOCAL */,`wcf1_user_authentication_failure` READ /*!32311 LOCAL */,`wcf1_user_avatar` READ /*!32311 LOCAL */,`wcf1_user_collapsible_content` READ /*!32311 LOCAL */,`wcf1_user_follow` READ /*!32311 LOCAL */,`wcf1_user_group` READ /*!32311 LOCAL */,`wcf1_user_group_application` READ /*!32311 LOCAL */,`wcf1_user_group_assignment` READ /*!32311 LOCAL */,`wcf1_user_group_leader` READ /*!32311 LOCAL */,`wcf1_user_group_option` READ /*!32311 LOCAL */,`wcf1_user_group_option_category` READ /*!32311 LOCAL */,`wcf1_user_group_option_value` READ /*!32311 LOCAL */,`wcf1_user_ignore` READ /*!32311 LOCAL */,`wcf1_user_infraction_suspension` READ /*!32311 LOCAL */,`wcf1_user_infraction_warning` READ /*!32311 LOCAL */,`wcf1_user_menu_item` READ /*!32311 LOCAL */,`wcf1_user_notification` READ /*!32311 LOCAL */,`wcf1_user_notification_author` READ /*!32311 LOCAL */,`wcf1_user_notification_event` READ /*!32311 LOCAL */,`wcf1_user_notification_event_to_user` READ /*!32311 LOCAL */,`wcf1_user_notification_to_user` READ /*!32311 LOCAL */,`wcf1_user_object_watch` READ /*!32311 LOCAL */,`wcf1_user_option` READ /*!32311 LOCAL */,`wcf1_user_option_category` READ /*!32311 LOCAL */,`wcf1_user_option_value` READ /*!32311 LOCAL */,`wcf1_user_otu_blacklist_entry` READ /*!32311 LOCAL */,`wcf1_user_profile_menu_item` READ /*!32311 LOCAL */,`wcf1_user_profile_visitor` READ /*!32311 LOCAL */,`wcf1_user_rank` READ /*!32311 LOCAL */,`wcf1_user_special_trophy` READ /*!32311 LOCAL */,`wcf1_user_storage` READ /*!32311 LOCAL */,`wcf1_user_to_group` READ /*!32311 LOCAL */,`wcf1_user_to_language` READ /*!32311 LOCAL */,`wcf1_user_trophy` READ /*!32311 LOCAL */,`wcf1_wsc_connect_login_attempts` READ /*!32311 LOCAL */,`wcf1_wsc_connect_notifications` READ /*!32311 LOCAL */
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Connection ID (thread ID): 36
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Status: NOT_KILLED
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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,split_materialized=on
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
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information that should help you find out what is causing the crash.
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Attachments
Issue Links
- relates to
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- Closed
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Activity
I am afraid that this is how InnoDB handles corruption. Without a repeatable test case, there is nothing that we can do about this. MDEV-13542 has been filed to handle corruption more gracefully.
I have seen cases where an InnoDB b-tree page is full of zero bytes. Sometimes users copy files without using mariabackup while the server is running. Or the redo log is removed while it contains outstanding changes. Or, it could also be caused by a hardware failure. Or some bug in InnoDB, such as MDEV-14126.
If you can provide a repeatable test case for corrupting the table, then we can try to do something about it.
Follow up:
~ # mysqlcheck -u root -p`cat /root/.mysql_shadow` --all-databasesmysql.column_stats OKmysql.columns_priv OKmysql.db OKmysql.event OKmysql.func OKmysql.gtid_slave_pos OKmysql.help_category OKmysql.help_keyword OKmysql.help_relation OKmysql.help_topic OKmysql.host OKmysql.index_stats OKmysqlcheck: Got error: 2013: Lost connection to MySQL server during query when executing 'CHECK TABLE ... 'Log:
190222 10:55:18 [ERROR] mysqld got signal 11 ;This could be because you hit a bug. It is also possible that this binaryor 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 https://mariadb.com/kb/en/reporting-bugsWe will try our best to scrape up some info that will hopefully helpdiagnose the problem, but since we have already crashed,something is definitely wrong and this may fail.Server version: 10.3.12-MariaDB-2key_buffer_size=16777216read_buffer_size=131072max_used_connections=1max_threads=153thread_count=7It is possible that mysqld could use up tokey_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 352701 K bytes of memoryHope that's ok; if not, decrease some variables in the equation.Thread pointer: 0x55697cb29428Attempting backtrace. You can use the following information to find outwhere mysqld died. If you see no messages after this, something wentterribly wrong...stack_bottom = 0x7f0f4d2f0dd8 thread_stack 0x30000/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x556979a7d6be]/usr/sbin/mysqld(handle_fatal_signal+0x505)[0x5569795ef935]/lib/x86_64-linux-gnu/libpthread.so.0(+0x126e0)[0x7f0f51f116e0]/usr/sbin/mysqld(+0x96122b)[0x5569797e222b]/usr/sbin/mysqld(+0xa0b205)[0x55697988c205]/usr/sbin/mysqld(+0xa6ce57)[0x5569798ede57]/usr/sbin/mysqld(+0xa72751)[0x5569798f3751]/usr/sbin/mysqld(+0x8e58d1)[0x5569797668d1]/usr/sbin/mysqld(_ZN7handler7ha_openEP5TABLEPKcijP11st_mem_rootP4ListI6StringE+0x4a)[0x5569795f3ffa]/usr/sbin/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPK25st_mysql_const_lex_stringjjjP5TABLEbP4ListI6StringE+0x979)[0x5569794d3989]/usr/sbin/mysqld(_Z10open_tableP3THDP10TABLE_LISTP18Open_table_context+0xae3)[0x5569793cb083]/usr/sbin/mysqld(_Z11open_tablesP3THDRK14DDL_options_stPP10TABLE_LISTPjjP19Prelocking_strategy+0xc52)[0x5569793ce102]/usr/sbin/mysqld(_Z20open_and_lock_tablesP3THDRK14DDL_options_stP10TABLE_LISTbjP19Prelocking_strategy+0x3d)[0x5569793ce87d]/usr/sbin/mysqld(+0x6833c8)[0x5569795043c8]/usr/sbin/mysqld(+0x684482)[0x556979505482]/usr/sbin/mysqld(_ZN19Sql_cmd_check_table7executeEP3THD+0x7b)[0x55697950729b]/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x114f)[0x55697942259f]/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x246)[0x556979429986]/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1ef0)[0x55697942c680]/usr/sbin/mysqld(_Z10do_commandP3THD+0x170)[0x55697942d2c0]/usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x20a)[0x5569794fb4ea]/usr/sbin/mysqld(handle_one_connection+0x3d)[0x5569794fb68d]/lib/x86_64-linux-gnu/libpthread.so.0(+0x7fa3)[0x7f0f51f06fa3]/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7f0f5124280f]Trying to get some variables.Some pointers may be invalid and cause the dump to abort.Query (0x55697cb38e00): CHECK TABLE `innodb_index_stats`Connection ID (thread ID): 36Status: NOT_KILLEDOptimizer 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,split_materialized=onThe manual page at http://dev.mysql.com/doc/mysql/en/crashing.html containsinformation that should help you find out what is causing the crash.