Description:
When executing a concurrent workload, mysqld crashed as follows:
#0 movelink (array=0x9e1a9f0, find=2, next_link=1013866853, newlink=4) at hash.c:272
#1 0x08664b37 in my_hash_insert (info=0x886b540, record=0xa3902c8 "╦,Д\t") at hash.c:437
#2 0x083d1e93 in mdl_acquire_shared_lock (context=0xa38df2c, lock_data=0x9e42cb8, retry=0xa80e4c8b) at mdl.cc:754
#3 0x082783ec in open_table_get_mdl_lock (thd=0xa38deb8, table_list=0xa80e53f8, mdl_lock_data=0x9e42cb8, flags=0, action=0xa80e5174) at sql_base.cc:2272
#4 0x0827956c in open_table (thd=0xa38deb8, table_list=0xa80e53f8, mem_root=0xa38f8b0, action=0xa80e5174, flags=0) at sql_base.cc:2530
#5 0x0827cf3d in open_ltable (thd=0xa38deb8, table_list=0xa80e53f8, lock_type=TL_WRITE_CONCURRENT_INSERT, lock_flags=27) at sql_base.cc:4012
#6 0x0827d1a4 in open_performance_schema_table (thd=0xa38deb8, one_table=0xa80e53f8, backup=0xa80e55f8) at sql_base.cc:7905
#7 0x082d5328 in Log_to_csv_event_handler::log_general (this=0x9e44948, thd=0xa38deb8, event_time=1220373711,
user_host=0xa80e56bc "root[root] @ localhost []", user_host_len=25, thread_id=10, command_type=0x86f3899 "Connect", command_type_len=7,
sql_text=0xa80e58e8 "root@localhost on test", sql_text_len=22, client_cs=0x885b2e0) at log.cc:391
#8 0x082d0a29 in LOGGER::general_log_write (this=0x8865300, thd=0xa38deb8, command=COM_CONNECT, query=0xa80e58e8 "root@localhost on test", query_length=22)
at log.cc:1046
#9 0x082d0b2e in LOGGER::general_log_print (this=0x8865300, thd=0xa38deb8, command=COM_CONNECT, format=0x86f2e08 "%s@%s on %s",
args=0xa80e5d2c "8L<\nR\200n\bБa\016╗\207W{\bЪЪЪ\037Д-o\b\\]\016╗\020") at log.cc:1065
#10 0x082d0b81 in general_log_print (thd=0xa38deb8, command=COM_CONNECT, format=0x86f2e08 "%s@%s on %s") at log.cc:4132
#11 0x0823403c in check_user (thd=0xa38deb8, command=COM_CONNECT, passwd=0xa40a276 "test", passwd_len=0, db=0x3c6e6165 <Address 0x3c6e6165 out of bounds>,
check_count=true) at sql_connect.cc:439
#12 0x08234cd8 in check_connection (thd=0xa38deb8) at sql_connect.cc:925
#13 0x08234d8d in login_connection (thd=0xa38deb8) at sql_connect.cc:985
#14 0x0823509c in handle_one_connection (arg=0xa38deb8) at sql_connect.cc:1144
#15 0x0057d32f in start_thread () from /lib/libpthread.so.0
#16 0x0049a27e in clone () from /lib/libc.so.6
(gdb) list
267 HASH_LINK *old_link;
268 do
269 {
270 old_link=array+next_link;
271 }
272 while ((next_link=old_link->next) != find); <<<< HERE
273 old_link->next= newlink;
274 return;
275 }
(gdb) print old_link->next
Cannot access memory at address 0xed54b518
Other crashes in movelink have been reported in the context of XA transactions
How to repeat:
If this is repeatable, a test case will be provided.
Description: When executing a concurrent workload, mysqld crashed as follows: #0 movelink (array=0x9e1a9f0, find=2, next_link=1013866853, newlink=4) at hash.c:272 #1 0x08664b37 in my_hash_insert (info=0x886b540, record=0xa3902c8 "╦,Д\t") at hash.c:437 #2 0x083d1e93 in mdl_acquire_shared_lock (context=0xa38df2c, lock_data=0x9e42cb8, retry=0xa80e4c8b) at mdl.cc:754 #3 0x082783ec in open_table_get_mdl_lock (thd=0xa38deb8, table_list=0xa80e53f8, mdl_lock_data=0x9e42cb8, flags=0, action=0xa80e5174) at sql_base.cc:2272 #4 0x0827956c in open_table (thd=0xa38deb8, table_list=0xa80e53f8, mem_root=0xa38f8b0, action=0xa80e5174, flags=0) at sql_base.cc:2530 #5 0x0827cf3d in open_ltable (thd=0xa38deb8, table_list=0xa80e53f8, lock_type=TL_WRITE_CONCURRENT_INSERT, lock_flags=27) at sql_base.cc:4012 #6 0x0827d1a4 in open_performance_schema_table (thd=0xa38deb8, one_table=0xa80e53f8, backup=0xa80e55f8) at sql_base.cc:7905 #7 0x082d5328 in Log_to_csv_event_handler::log_general (this=0x9e44948, thd=0xa38deb8, event_time=1220373711, user_host=0xa80e56bc "root[root] @ localhost []", user_host_len=25, thread_id=10, command_type=0x86f3899 "Connect", command_type_len=7, sql_text=0xa80e58e8 "root@localhost on test", sql_text_len=22, client_cs=0x885b2e0) at log.cc:391 #8 0x082d0a29 in LOGGER::general_log_write (this=0x8865300, thd=0xa38deb8, command=COM_CONNECT, query=0xa80e58e8 "root@localhost on test", query_length=22) at log.cc:1046 #9 0x082d0b2e in LOGGER::general_log_print (this=0x8865300, thd=0xa38deb8, command=COM_CONNECT, format=0x86f2e08 "%s@%s on %s", args=0xa80e5d2c "8L<\nR\200n\bБa\016╗\207W{\bЪЪЪ\037Д-o\b\\]\016╗\020") at log.cc:1065 #10 0x082d0b81 in general_log_print (thd=0xa38deb8, command=COM_CONNECT, format=0x86f2e08 "%s@%s on %s") at log.cc:4132 #11 0x0823403c in check_user (thd=0xa38deb8, command=COM_CONNECT, passwd=0xa40a276 "test", passwd_len=0, db=0x3c6e6165 <Address 0x3c6e6165 out of bounds>, check_count=true) at sql_connect.cc:439 #12 0x08234cd8 in check_connection (thd=0xa38deb8) at sql_connect.cc:925 #13 0x08234d8d in login_connection (thd=0xa38deb8) at sql_connect.cc:985 #14 0x0823509c in handle_one_connection (arg=0xa38deb8) at sql_connect.cc:1144 #15 0x0057d32f in start_thread () from /lib/libpthread.so.0 #16 0x0049a27e in clone () from /lib/libc.so.6 (gdb) list 267 HASH_LINK *old_link; 268 do 269 { 270 old_link=array+next_link; 271 } 272 while ((next_link=old_link->next) != find); <<<< HERE 273 old_link->next= newlink; 274 return; 275 } (gdb) print old_link->next Cannot access memory at address 0xed54b518 Other crashes in movelink have been reported in the context of XA transactions How to repeat: If this is repeatable, a test case will be provided.