[MDEV-14075] buffer overflow detected with unlink_thd function Created: 2017-10-16  Updated: 2018-01-27

Status: Open
Project: MariaDB Server
Component/s: None
Affects Version/s: 10.1.21, 10.1.26
Fix Version/s: None

Type: Bug Priority: Major
Reporter: Przemek Assignee: Unassigned
Resolution: Unresolved Votes: 0
Labels: None

Attachments: Text File other_err_log_occurrences.txt     File server.cnf    
Issue Links:
Relates
relates to MDEV-13800 Crash during transaction rollback wit... Closed

 Description   

We have MariaDB instance with very often 'signal 11' crashes. Most of them happen with reference to unlink_thd() function, which is not present anymore in MySQL 5.6+, so I assume this may be specific to MariaDB.

171010 12:33:21 server_audit: MariaDB Audit Plugin version 1.4.1 STARTED.
Version: '10.1.26-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server

It is not clear what exactly queries/transactions cause these crashes.

Example crash with related thread gdb traces (no full gdb attached due to sensitive information) below. Additional, slightly different occurences in attachment.

171010 12:28:49 [ERROR] mysqld got signal 11 ;
This could be because you hit a bug. It is also possible that this binary
or 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-bugs
 
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed, 
something is definitely wrong and this may fail.
 
Server version: 10.1.26-MariaDB
key_buffer_size=1073741824
read_buffer_size=131072
max_used_connections=1058
max_threads=2002
thread_count=457
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 5446182 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
 
Thread pointer: 0x7f282328f008
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 = 0x7f2783c90080 thread_stack 0x48400
*** 	 ***: /usr/sbin/mysqld terminated
======= Backtrace: =========
/lib64/libc.so.6(__fortify_fail+0x37)[0x7f5e7fc7cd87]
/lib64/libc.so.6(+0x10df40)[0x7f5e7fc7af40]
/lib64/libc.so.6(+0x10fcf7)[0x7f5e7fc7ccf7]
/usr/sbin/mysqld(my_addr_resolve+0x48)[0x55f45696b088]
/usr/sbin/mysqld(my_print_stacktrace+0x1c2)[0x55f4569576c2]
/usr/sbin/mysqld(handle_fatal_signal+0x305)[0x55f45647aed5]
/lib64/libpthread.so.0(+0xf5e0)[0x7f5e818c95e0]
/usr/sbin/mysqld(_Z17ha_rollback_transP3THDb+0xab)[0x55f45647da1b]
/usr/sbin/mysqld(_Z14trans_rollbackP3THD+0x5a)[0x55f4563d6a9a]
/usr/sbin/mysqld(_ZN3THD7cleanupEv+0xe2)[0x55f4562c51b2]
/usr/sbin/mysqld(_Z10unlink_thdP3THD+0x17)[0x55f456257ad7]
/usr/sbin/mysqld(_Z29one_thread_per_connection_endP3THDb+0x20)[0x55f456257c90]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x113)[0x55f4563c8963]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x55f4563c8b80]
/usr/sbin/mysqld(+0x74be8d)[0x55f456607e8d]
/lib64/libpthread.so.0(+0x7e25)[0x7f5e818c1e25]
/lib64/libc.so.6(clone+0x6d)[0x7f5e7fc6534d]
======= Memory map: ========
55f455ebc000-55f456e46000 r-xp 00000000 fb:00 134770637                  /usr/sbin/mysqld
55f457046000-55f4570f7000 r--p 00f8a000 fb:00 134770637                  /usr/sbin/mysqld
55f4570f7000-55f4571a9000 rw-p 0103b000 fb:00 134770637                  /usr/sbin/mysqld
(...)
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Fatal signal 6 while backtracing
2017-10-10 12:32:44 139933296474368 [Note] Using unique option prefix 'myisam-recover' is error-prone and can break in the future. Please use the full name 'myisam-recover-options' instead.
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: The InnoDB memory heap is disabled
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Compressed tables use zlib 1.2.7
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Using Linux native AIO
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Using SSE crc32 instructions
2017-10-10 12:32:44 139933296474368 [Note] InnoDB: Initializing buffer pool, size = 200.0G
2017-10-10 12:32:51 139933296474368 [Note] InnoDB: Completed initialization of buffer pool
2017-10-10 12:32:51 139933296474368 [Note] InnoDB: Highest supported file format is Barracuda.
2017-10-10 12:32:51 139933296474368 [Note] InnoDB: Starting crash recovery from checkpoint LSN=49954283878443
2017-10-10 12:32:52 139933296474368 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...
InnoDB: 4 transaction(s) which must be rolled back or cleaned up
InnoDB: in total 4 row operations to undo
InnoDB: Trx id counter is 36935782400
2017-10-10 12:33:04 139933296474368 [Note] InnoDB: Starting final batch to recover 127478 pages from redo log
2017-10-10 12:33:06 139701654628096 [Note] InnoDB: To recover: 92197 pages from log
InnoDB: Last MySQL binlog file position 0 575403140, file name /home/mysql/logs/mysql.002397
2017-10-10 12:33:11 139933296474368 [Note] InnoDB: 128 rollback segment(s) are active.
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Starting in background the rollback of recovered transactions
2017-10-10 12:33:11 7f0e04ffe700  InnoDB: Rolling back trx with id 36935781973, 1 rows to undo
2017-10-10 12:33:11 139933296474368 [Note] InnoDB: Waiting for purge to start
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Rollback of trx with id 36935781973 completed
2017-10-10 12:33:11 7f0e04ffe700  InnoDB: Rolling back trx with id 36935781972, 1 rows to undo
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Rollback of trx with id 36935781972 completed
2017-10-10 12:33:11 7f0e04ffe700  InnoDB: Rolling back trx with id 36935781970, 1 rows to undo
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Rollback of trx with id 36935781970 completed
2017-10-10 12:33:11 7f0e04ffe700  InnoDB: Rolling back trx with id 36935781952, 1 rows to undo
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Rollback of trx with id 36935781952 completed
2017-10-10 12:33:11 139698190149376 [Note] InnoDB: Rollback of non-prepared transactions completed
2017-10-10 12:33:11 139933296474368 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.36-82.1 started; log sequence number 49954847609095
2017-10-10 12:33:21 139933296474368 [Note] Plugin 'FEEDBACK' is disabled.
171010 12:33:21 server_audit: MariaDB Audit Plugin version 1.4.1 STARTED.
2017-10-10 12:33:21 139697242212096 [Note] InnoDB: Dumping buffer pool(s) not yet started
2017-10-10 12:33:21 139933296474368 [Note] Recovering after a crash using /home/mysql/logs/mysql
2017-10-10 12:33:22 139933296474368 [Note] Starting crash recovery...
2017-10-10 12:33:22 139933296474368 [Note] Crash recovery finished.
2017-10-10 12:33:22 139933296474368 [Note] Server socket created on IP: '::'.
2017-10-10 12:33:22 139933296474368 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.1.26-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server

Related thread gdb standard:

Thread 1 (Thread 0x7f2783c90b00 (LWP 22144)):
+bt
#0  0x00007f5e7fba21f7 in raise () from /lib64/libc.so.6
#1  0x00007f5e7fba38e8 in abort () from /lib64/libc.so.6
#2  0x00007f5e7fbe1f47 in __libc_message () from /lib64/libc.so.6
#3  0x00007f5e7fc7cd87 in __fortify_fail () from /lib64/libc.so.6
#4  0x00007f5e7fc7af40 in __chk_fail () from /lib64/libc.so.6
#5  0x00007f5e7fc7ccf7 in __fdelt_warn () from /lib64/libc.so.6
#6  0x000055f45696b088 in my_addr_resolve (ptr=0x55f45695752e <my_print_stacktrace+46>, loc=loc@entry=0x7f2783c8f3f0) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/my_addr_resolve.c:162
#7  0x000055f4569576c2 in print_with_addr_resolve (n=<optimized out>, addrs=0x7f2783c8f410) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/stacktrace.c:253
#8  my_print_stacktrace (stack_bottom=<optimized out>, thread_stack=295936) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/stacktrace.c:271
#9  0x000055f45647aed5 in handle_fatal_signal (sig=11) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/signal_handler.cc:166
#10 <signal handler called>
#11 ha_rollback_trans (thd=thd@entry=0x7f282328f008, all=all@entry=true) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/handler.cc:1591
#12 0x000055f4563d6a9a in trans_rollback (thd=thd@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/transaction.cc:340
#13 0x000055f4562c51b2 in THD::cleanup (this=this@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_class.cc:1582
#14 0x000055f4562578ea in thd_cleanup (thd=thd@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2756
#15 0x000055f456257ad7 in unlink_thd (thd=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2824
#16 0x000055f456257c90 in one_thread_per_connection_end (thd=<optimized out>, put_in_cache=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2952
#17 0x000055f4563c8963 in do_handle_one_connection (thd_arg=thd_arg@entry=0x7f28084ed008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_connect.cc:1368
#18 0x000055f4563c8b80 in handle_one_connection (arg=arg@entry=0x7f28084ed008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_connect.cc:1261
#19 0x000055f456607e8d in pfs_spawn_thread (arg=0x7f283af7cc08) at /home/buildbot/buildbot/build/mariadb-10.1.26/storage/perfschema/pfs.cc:1860
#20 0x00007f5e818c1e25 in start_thread () from /lib64/libpthread.so.0
#21 0x00007f5e7fc6534d in clone () from /lib64/libc.so.6
+thread apply all bt

gdb full:

Thread 1 (Thread 0x7f2783c90b00 (LWP 22144)):
+bt full
#0  0x00007f5e7fba21f7 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f5e7fba38e8 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f5e7fbe1f47 in __libc_message () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007f5e7fc7cd87 in __fortify_fail () from /lib64/libc.so.6
No symbol table info available.
#4  0x00007f5e7fc7af40 in __chk_fail () from /lib64/libc.so.6
No symbol table info available.
#5  0x00007f5e7fc7ccf7 in __fdelt_warn () from /lib64/libc.so.6
No symbol table info available.
#6  0x000055f45696b088 in my_addr_resolve (ptr=0x55f45695752e <my_print_stacktrace+46>, loc=loc@entry=0x7f2783c8f3f0) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/my_addr_resolve.c:162
        __d = <optimized out>
        input =           "\270\316\362\177^\177\000\000\000\000\000\000\000\000\000\000\270\316\362\177^\177\000\000\062\302\302\177^\177\000"
        len = <optimized out>
        total_bytes_read = 0
        extra_bytes_read = 0
        set = {
          fds_bits =             {[0] = 0 <repeats 16 times>}
        }
        timeout = {
          tv_sec = 0, 
          tv_usec = 0
        }
        filename_start = -1
        line_number_start = -1
        i = <optimized out>
#7  0x000055f4569576c2 in print_with_addr_resolve (n=<optimized out>, addrs=0x7f2783c8f410) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/stacktrace.c:253
        loc = {
          file = 0x7f2800000000 "\300\317\333|^\177", 
          func = 0x675f61d6be26ab00 <Address 0x675f61d6be26ab00 out of bounds>, 
          line = 1461355122
        }
        i = <optimized out>
        err = <optimized out>
#8  my_print_stacktrace (stack_bottom=<optimized out>, thread_stack=295936) at /home/buildbot/buildbot/build/mariadb-10.1.26/mysys/stacktrace.c:271
        addrs =           {[0] = 0x55f45695752e <my_print_stacktrace+46>,
          [1] = 0x55f45647aed5 <handle_fatal_signal(int)+773>,
          [2] = 0x7f5e818c95e0 <__restore_rt>,
          [3] = 0x55f45647da1b <ha_rollback_trans(THD*, bool)+171>,
          [4] = 0x55f4563d6a9a <trans_rollback(THD*)+90>,
          [5] = 0x55f4562c51b2 <THD::cleanup()+226>,
          [6] = 0x55f456257ad7 <unlink_thd(THD*)+23>,
          [7] = 0x55f456257c90 <one_thread_per_connection_end(THD*, bool)+32>,
          [8] = 0x55f4563c8963 <do_handle_one_connection(THD*)+275>,
          [9] = 0x55f4563c8b80 <handle_one_connection(void*)+64>,
          [10] = 0x55f456607e8d <pfs_spawn_thread(void*)+365>,
          [11] = 0x7f5e818c1e25 <start_thread+197>,
          [12] = 0x7f5e7fc6534d <clone+109>,
          [13] = 0x0,
          [14] = 0x7f284705c0c2,
          [15] = 0x7f284705c020,
          [16] = 0x101000000a2,
          [17] = 0x7f284705c128,
          [18] = 0x7f284705c1ca,
          [19] = 0x7f284705c1ca,
          [20] = 0x7f284705c1ca,
          [21] = 0x7f284705c1ca,
          [22] = 0x0,
          [23] = 0x112fd57b3f,
          [24] = 0x0,
          [25] = 0x55f40000000c,
          [26] = 0x0,
          [27] = 0x100007f,
          [28] = 0x7f5e00000000,
          [29] = 0x7f284705c1c5,
          [30] = 0x7f284705c1ca,
          [31] = 0x675f61d6be26ab00,
          [32] = 0x0,
          [33] = 0x7f2783c8f570,
          [34] = 0x55f457136330 <dflt_key_cache>,
          [35] = 0x55f4569570ec <my_write_stderr+28>,
          [36] = 0x7f2783c8f570,
          [37] = 0x7f5e818c86b9 <write+57>,
          [38] = 0x0,
          [39] = 0x55f4569571c3 <my_safe_printf_stderr+195>,
          [40] = 0x0,
          [41] = 0x3000000010,
          [42] = 0x7f2783c8f850,
          [43] = 0x7f2783c8f780,
          [44] = 0x6974706d65747441,
          [45] = 0x746b63616220676e,
          [46] = 0x6f59202e65636172,
          [47] = 0x7375206e61632075,
          [48] = 0x6f66206568742065,
          [49] = 0x20676e69776f6c6c,
          [50] = 0x74616d726f666e69,
          [51] = 0x66206f74206e6f69,
          [52] = 0xa74756f20646e69,
          [53] = 0x796d206572656877,
          [54] = 0x65696420646c7173,
          [55] = 0x6f79206649202e64,
          [56] = 0x6f6e206565732075,
          [57] = 0x6567617373656d20,
          [58] = 0x2072657466612073,
          [59] = 0x6f73202c73696874,
          [60] = 0x20676e696874656d,
          [61] = 0x7265740a746e6577,
          [62] = 0x727720796c626972,
          [63] = 0xa2e2e2e676e6f,
          [64] = 0x616d207369687420,
          [65] = 0xa2e6c6961662079,
          [66] = 0x61206e616320000a,
          [67] = 0x63206562206f736c,
          [68] = 0x7962206465737561,
          [69] = 0x636e75666c616d20,
          [70] = 0x20676e696e6f6974,
          [71] = 0x6572617764726168,
          [72] = 0xa0a2e,
          [73] = 0x0 <repeats 36 times>,
          [109] = 0x675f61d6be26ab00,
          [110] = 0xca,
          [111] = 0x55f456a45a40,
          [112] = 0x1f,
          [113] = 0x7f5e818c86ad <write+45>,
          [114] = 0x70,
          [115] = 0x0,
          [116] = 0x0,
          [117] = 0x7f2783c8f810,
          [118] = 0xc9,
          [119] = 0x59dcaef1,
          [120] = 0x18,
          [121] = 0x7f2783c8f830,
          [122] = 0x7f2783c8f7f0,
          [123] = 0x7f2783c8f878,
          [124] = 0x1,
          [125] = 0x0,
          [126] = 0x2f,
          [127] = 0x55f456a4e8d4}
        strings = 0x0
        n = <optimized out>
#9  0x000055f45647aed5 in handle_fatal_signal (sig=11) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/signal_handler.cc:166
        curr_time = 1507634929
        tm = {
          tm_sec = 49, 
          tm_min = 28, 
          tm_hour = 12, 
          tm_mday = 10, 
          tm_mon = 9, 
          tm_year = 117, 
          tm_wday = 2, 
          tm_yday = 282, 
          tm_isdst = 1, 
          tm_gmtoff = 3600, 
          tm_zone = 0x7f5e7c83b070 "BST"
        }
        print_invalid_query_pointer = false
#10 <signal handler called>
No symbol table info available.
#11 ha_rollback_trans (thd=thd@entry=0x7f282328f008, all=all@entry=true) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/handler.cc:1591
No locals.
#12 0x000055f4563d6a9a in trans_rollback (thd=thd@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/transaction.cc:340
        res = <optimized out>
#13 0x000055f4562c51b2 in THD::cleanup (this=this@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_class.cc:1582
No locals.
#14 0x000055f4562578ea in thd_cleanup (thd=thd@entry=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2756
No locals.
#15 0x000055f456257ad7 in unlink_thd (thd=0x7f282328f008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2824
No locals.
#16 0x000055f456257c90 in one_thread_per_connection_end (thd=<optimized out>, put_in_cache=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/mysqld.cc:2952
        wsrep_applier = false
#17 0x000055f4563c8963 in do_handle_one_connection (thd_arg=thd_arg@entry=0x7f28084ed008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_connect.cc:1368
        create_user = <optimized out>
        thd = 0x7f282328f008
#18 0x000055f4563c8b80 in handle_one_connection (arg=arg@entry=0x7f28084ed008) at /home/buildbot/buildbot/build/mariadb-10.1.26/sql/sql_connect.cc:1261
        thd = 0x7f28084ed008
#19 0x000055f456607e8d in pfs_spawn_thread (arg=0x7f283af7cc08) at /home/buildbot/buildbot/build/mariadb-10.1.26/storage/perfschema/pfs.cc:1860
        typed_arg = 0x7f283af7cc08
        user_arg = 0x7f28084ed008
        pfs = <optimized out>
        user_start_routine = 0x55f4563c8b40 <handle_one_connection(void*)>
        klass = <optimized out>
#20 0x00007f5e818c1e25 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#21 0x00007f5e7fc6534d in clone () from /lib64/libc.so.6
No symbol table info available.
+quit



 Comments   
Comment by Elena Stepanova [ 2017-10-23 ]

The configuration file indicates, although not conclusively, that it might be a replication slave. Is it so? If it's a slave, do crashes always happen on the slave only, and can you find out from the binary log what was the last binlog event that it was executing (after server restart it will show in the error log from which position it resumes replication)?

For a note, the attached occurrences actually contain four different types of crashes:

  • crash in Query_arena::free_items upon INSERT
  • crash in ha_rollback_trans upon killing connection (3 times)
  • buffer overflow in ha_rollback_trans upon killing connection
  • buffer overflow upon SELECT
Comment by Charly Batista [ 2017-10-25 ]

@Elena, this is the current master. It was moved over to this server a little while ago because the previous server was running out of diskspace - and a large query that was cancelled failed to revert.

Comment by Alice Sherepa [ 2017-12-04 ]

Is it suitable for you to try MariaDB 10.1.27 or higher?
MDEV-13650 fixes memory corruption in audit plugin, which may cause various symptoms, including those which you provided

Comment by Przemek [ 2018-01-08 ]

Sorry to say, but a very similar crash trace happens also on 10.1.29:

Server version: 10.1.29-MariaDB
key_buffer_size=1073741824
read_buffer_size=131072
max_used_connections=463
max_threads=2002
thread_count=303
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 5446245 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
 
Thread pointer: 0x7f48462cc008
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 = 0x7f47de958080 thread_stack 0x48400
*** buffer overflow detected ***: /usr/sbin/mysqld terminated
======= Backtrace: =========
/lib64/libc.so.6(__fortify_fail+0x37)[0x7f7137288d87]
/lib64/libc.so.6(+0x10df40)[0x7f7137286f40]
/lib64/libc.so.6(+0x10fcf7)[0x7f7137288cf7]
/usr/sbin/mysqld(my_addr_resolve+0x48)[0x55590c52b1b8]
/usr/sbin/mysqld(my_print_stacktrace+0x1c2)[0x55590c5177f2]
/usr/sbin/mysqld(handle_fatal_signal+0x305)[0x55590c03b015]
/lib64/libpthread.so.0(+0xf5e0)[0x7f7138ed55e0]
/usr/sbin/mysqld(_Z17ha_rollback_transP3THDb+0xd3)[0x55590c03dba3]
/usr/sbin/mysqld(_Z14trans_rollbackP3THD+0x5a)[0x55590bf95eba]
/usr/sbin/mysqld(_ZN3THD7cleanupEv+0xe2)[0x55590be841f2]
/usr/sbin/mysqld(_Z10unlink_thdP3THD+0x17)[0x55590be16447]
/usr/sbin/mysqld(_Z29one_thread_per_connection_endP3THDb+0x20)[0x55590be16600]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x113)[0x55590bf87d83]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x55590bf87fa0]
/usr/sbin/mysqld(+0x74e49d)[0x55590c1c849d]
/lib64/libpthread.so.0(+0x7e25)[0x7f7138ecde25]
/lib64/libc.so.6(clone+0x6d)[0x7f713727134d]

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