Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.2.8, 10.2(EOL), 10.3(EOL)
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None
Description
A mysqld instance apparently crahsed while generating output for SHOW CREATE TABLE:
180823 21:00:02 [ERROR] mysqld got signal 11 ;
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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: 10.2.8-MariaDB-log
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key_buffer_size=67108864
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read_buffer_size=131072
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max_used_connections=598
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max_threads=2502
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thread_count=256
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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 = 5563268 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: 0x7f42c816ee18
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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 = 0x7f439824bd70 thread_stack 0x40000
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(my_addr_resolve failure: fork)
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/usr/sbin/mysqld(my_print_stacktrace+0x2e) [0x562e51a3b3fe]
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/usr/sbin/mysqld(handle_fatal_signal+0x30d) [0x562e51483e0d]
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/lib64/libpthread.so.0(+0xf5e0) [0x7f615ab605e0]
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/usr/sbin/mysqld(Item_ident::print(String*, enum_query_type)+0x50) [0x562e51498dd0]
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/usr/sbin/mysqld(Item_func::print_op(String*, enum_query_type)+0xaf) [0x562e514ece3f]
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/usr/sbin/mysqld(show_create_table(THD*, TABLE_LIST*, String*, Table_specification_st*, enum_with_db_name)+0xe79) [0x562e51328ad9]
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/usr/sbin/mysqld(mysqld_show_create_get_fields(THD*, TABLE_LIST*, List<Item>*, String*)+0x51c) [0x562e513296dc]
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/usr/sbin/mysqld(mysqld_show_create(THD*, TABLE_LIST*)+0xc3) [0x562e51329b23]
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/usr/sbin/mysqld(mysql_execute_command(THD*)+0x3a90) [0x562e512cd230]
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/usr/sbin/mysqld(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool)+0x372) [0x562e512d28f2]
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/usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool)+0x2790) [0x562e512d5fa0]
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/usr/sbin/mysqld(do_command(THD*)+0x15d) [0x562e512d6bcd]
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/usr/sbin/mysqld(do_handle_one_connection(CONNECT*)+0x1aa) [0x562e513993ca]
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/usr/sbin/mysqld(handle_one_connection+0x3d) [0x562e513994ed]
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/lib64/libpthread.so.0(+0x7e25) [0x7f615ab58e25]
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/lib64/libc.so.6(clone+0x6d) [0x7f61591ab34d]
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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 (0x7f42c851da80): show create table `bnkpendinguser`
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Connection ID (thread ID): 468047
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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=on,mrr_cost_based=on,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=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=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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Writing a core file
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Attachments
Issue Links
- relates to
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MDEV-14750 Valgrind Invalid read, ASAN heap-use-after-free in Item_ident::print upon SHOW CREATE on partitioned table
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- Closed
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Note: the test case is similar to
MDEV-14750, but no partitions are needed here.);
# Cleanup
10.2 ASAN 55163ba1bd
==15569==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c00000e030 at pc 0x55f0e7bf45cc bp 0x7f2134dfdc30 sp 0x7f2134dfdc28
READ of size 1 at 0x60c00000e030 thread T5
#0 0x55f0e7bf45cb in Item_ident::print(String*, enum_query_type) /data/src/10.2/sql/item.cc:2708
#1 0x55f0e7c17209 in Item_field::print(String*, enum_query_type) /data/src/10.2/sql/item.cc:7410
#2 0x55f0e7be4250 in Item::print_parenthesised(String*, enum_query_type, precedence) /data/src/10.2/sql/item.cc:585
#3 0x55f0e7cc8f72 in Item_func::print_op(String*, enum_query_type) /data/src/10.2/sql/item_func.cc:480
#4 0x55f0e7c8bda6 in Item_bool_rowready_func2::print(String*, enum_query_type) /data/src/10.2/sql/item_cmpfunc.h:490
#5 0x55f0e7be4250 in Item::print_parenthesised(String*, enum_query_type, precedence) /data/src/10.2/sql/item.cc:585
#6 0x55f0e778716d in Item::print_for_table_def(String*) /data/src/10.2/sql/item.h:1319
#7 0x55f0e77879cf in Virtual_column_info::print(String*) /data/src/10.2/sql/item.h:6052
#8 0x55f0e773d216 in show_create_table(THD*, TABLE_LIST*, String*, Table_specification_st*, enum_with_db_name) /data/src/10.2/sql/sql_show.cc:2130
#9 0x55f0e7736b2d in mysqld_show_create_get_fields(THD*, TABLE_LIST*, List<Item>*, String*) /data/src/10.2/sql/sql_show.cc:1251
#10 0x55f0e77372cd in mysqld_show_create(THD*, TABLE_LIST*) /data/src/10.2/sql/sql_show.cc:1324
#11 0x55f0e75ce32e in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:4242
#12 0x55f0e75e6875 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:8009
#13 0x55f0e75c1456 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1824
#14 0x55f0e75be4fa in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1378
#15 0x55f0e7901205 in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1335
#16 0x55f0e7900c1a in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
#17 0x55f0e83120e9 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
#18 0x7f2141284493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)
#19 0x7f213f66a93e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xe893e)
0x60c00000e030 is located 112 bytes inside of 124-byte region [0x60c00000dfc0,0x60c00000e03c)
freed by thread T5 here:
#0 0x7f21414ee527 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54527)
#1 0x55f0e8c3264d in free_memory /data/src/10.2/mysys/safemalloc.c:279
#2 0x55f0e8c31c53 in sf_free /data/src/10.2/mysys/safemalloc.c:197
#3 0x55f0e8c00e4c in my_free /data/src/10.2/mysys/my_malloc.c:217
#4 0x55f0e73de23f in String::free() /data/src/10.2/sql/sql_string.h:351
#5 0x55f0e77a19bf in String::real_alloc(unsigned long) /data/src/10.2/sql/sql_string.cc:44
#6 0x55f0e73fff05 in String::alloc(unsigned long) /data/src/10.2/sql/sql_string.h:361
#7 0x55f0e77a2990 in String::copy(char const*, unsigned long, charset_info_st const*) /data/src/10.2/sql/sql_string.cc:187
#8 0x55f0e7860375 in TABLE::init(THD*, TABLE_LIST*) /data/src/10.2/sql/table.cc:4490
#9 0x55f0e74b6612 in open_table(THD*, TABLE_LIST*, Open_table_context*) /data/src/10.2/sql/sql_base.cc:1961
#10 0x55f0e74bc866 in open_and_process_table /data/src/10.2/sql/sql_base.cc:3445
#11 0x55f0e74bef8e in open_tables(THD*, DDL_options_st const&, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) /data/src/10.2/sql/sql_base.cc:3964
#12 0x55f0e7566d8b in open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int) /data/src/10.2/sql/sql_base.h:471
#13 0x55f0e77367cf in mysqld_show_create_get_fields(THD*, TABLE_LIST*, List<Item>*, String*) /data/src/10.2/sql/sql_show.cc:1229
#14 0x55f0e77372cd in mysqld_show_create(THD*, TABLE_LIST*) /data/src/10.2/sql/sql_show.cc:1324
#15 0x55f0e75ce32e in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:4242
#16 0x55f0e75e6875 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:8009
#17 0x55f0e75c1456 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1824
#18 0x55f0e75be4fa in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1378
#19 0x55f0e7901205 in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1335
#20 0x55f0e7900c1a in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
#21 0x55f0e83120e9 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
#22 0x7f2141284493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)
previously allocated by thread T5 here:
#0 0x7f21414ee73f in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x5473f)
#1 0x55f0e8c313c3 in sf_malloc /data/src/10.2/mysys/safemalloc.c:118
#2 0x55f0e8c00584 in my_malloc /data/src/10.2/mysys/my_malloc.c:101
#3 0x55f0e77a1a1e in String::real_alloc(unsigned long) /data/src/10.2/sql/sql_string.cc:47
#4 0x55f0e73fff05 in String::alloc(unsigned long) /data/src/10.2/sql/sql_string.h:361
#5 0x55f0e77a2990 in String::copy(char const*, unsigned long, charset_info_st const*) /data/src/10.2/sql/sql_string.cc:187
#6 0x55f0e7855333 in open_table_from_share(THD*, TABLE_SHARE*, char const*, unsigned int, unsigned int, unsigned int, TABLE*, bool) /data/src/10.2/sql/table.cc:3035
#7 0x55f0e74b616d in open_table(THD*, TABLE_LIST*, Open_table_context*) /data/src/10.2/sql/sql_base.cc:1900
#8 0x55f0e74bc866 in open_and_process_table /data/src/10.2/sql/sql_base.cc:3445
#9 0x55f0e74bef8e in open_tables(THD*, DDL_options_st const&, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) /data/src/10.2/sql/sql_base.cc:3964
#10 0x55f0e74c2c94 in open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) /data/src/10.2/sql/sql_base.cc:4718
#11 0x55f0e74a493e in open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) /data/src/10.2/sql/sql_base.h:502
#12 0x55f0e75dd2be in execute_sqlcom_select /data/src/10.2/sql/sql_parse.cc:6398
#13 0x55f0e75caa16 in mysql_execute_command(THD*) /data/src/10.2/sql/sql_parse.cc:3484
#14 0x55f0e75e6875 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.2/sql/sql_parse.cc:8009
#15 0x55f0e75c1456 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.2/sql/sql_parse.cc:1824
#16 0x55f0e75be4fa in do_command(THD*) /data/src/10.2/sql/sql_parse.cc:1378
#17 0x55f0e7901205 in do_handle_one_connection(CONNECT*) /data/src/10.2/sql/sql_connect.cc:1335
#18 0x55f0e7900c1a in handle_one_connection /data/src/10.2/sql/sql_connect.cc:1241
#19 0x55f0e83120e9 in pfs_spawn_thread /data/src/10.2/storage/perfschema/pfs.cc:1862
#20 0x7f2141284493 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7493)
Thread T5 created by T0 here:
#0 0x7f21414bdbba in pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x23bba)
#1 0x55f0e83126b1 in spawn_thread_v1 /data/src/10.2/storage/perfschema/pfs.cc:1912
#2 0x55f0e73bb90e in inline_mysql_thread_create /data/src/10.2/include/mysql/psi/mysql_thread.h:1239
#3 0x55f0e73d086e in create_thread_to_handle_connection(CONNECT*) /data/src/10.2/sql/mysqld.cc:6470
#4 0x55f0e73d0f73 in create_new_thread /data/src/10.2/sql/mysqld.cc:6540
#5 0x55f0e73d1f8a in handle_connections_sockets() /data/src/10.2/sql/mysqld.cc:6815
#6 0x55f0e73cfdc3 in mysqld_main(int, char**) /data/src/10.2/sql/mysqld.cc:6089
#7 0x55f0e73b9caf in main /data/src/10.2/sql/main.cc:25
#8 0x7f213f5a22b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)
SUMMARY: AddressSanitizer: heap-use-after-free /data/src/10.2/sql/item.cc:2708 Item_ident::print(String*, enum_query_type)
Shadow bytes around the buggy address:
0x0c187fff9bb0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fff9bc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fff9bd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fff9be0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c187fff9bf0: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
=>0x0c187fff9c00: fd fd fd fd fd fd[fd]fd fa fa fa fa fa fa fa fa
0x0c187fff9c10: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c187fff9c20: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c187fff9c30: 00 00 00 00 00 00 00 04 fa fa fa fa fa fa fa fa
0x0c187fff9c40: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c187fff9c50: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Contiguous container OOB:fc
ASan internal: fe
==15569==ABORTING
Reproducible on current 10.2, 10.3, as well as on an old 10.2.8-based compatibility build (e.g. 15759).
Reproducible with at least MyISAM and InnoDB.