Core was generated by `/test/mtest/MD180923-mariadb-11.3.0-linux-x86_64-opt/bin/mariadbd --no-defaults'.
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Program terminated with signal SIGSEGV, Segmentation fault.
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#0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
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[Current thread is 1 (Thread 0x14aef61f0700 (LWP 210291))]
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(gdb) bt
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#0 __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
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#1 0x000055d21b311921 in my_strdup (key=0, from=0x0, my_flags=my_flags@entry=65552) at /test/mtest/11.3_opt/mysys/my_malloc.c:236
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#2 0x000055d21ac1a0a8 in plugin_thdvar_init (thd=thd@entry=0x14ae94002f28) at /test/mtest/11.3_opt/sql/sql_plugin.cc:3271
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#3 0x000055d21aba582b in THD::init (this=this@entry=0x14ae94002f28) at /test/mtest/11.3_opt/sql/sql_class.cc:1229
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#4 0x000055d21abab87c in THD::THD (this=0x14ae94002f28, id=<optimized out>, is_wsrep_applier=<optimized out>) at /test/mtest/11.3_opt/sql/sql_class.cc:851
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#5 0x000055d21ababd02 in create_background_thd () at /test/mtest/11.3_opt/sql/sql_list.h:680
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#6 0x000055d21b0edfa4 in innobase_create_background_thd (name=name@entry=0x55d21b69e430 "InnoDB statistics") at /test/mtest/11.3_opt/storage/innobase/handler/ha_innodb.cc:1713
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#7 0x000055d21b25634c in dict_stats_func () at /test/mtest/11.3_opt/storage/innobase/dict/dict0stats_bg.cc:374
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#8 0x000055d21b2b336d in tpool::thread_pool_generic::timer_generic::run (this=0x55d21d0000e0) at /test/mtest/11.3_opt/tpool/tpool_generic.cc:343
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#9 tpool::thread_pool_generic::timer_generic::execute (arg=0x55d21d0000e0) at /test/mtest/11.3_opt/tpool/tpool_generic.cc:363
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#10 0x000055d21b2b400a in tpool::task::execute (this=0x55d21d000120) at /test/mtest/11.3_opt/tpool/task.cc:37
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#11 tpool::task::execute (this=0x55d21d000120) at /test/mtest/11.3_opt/tpool/task.cc:27
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#12 0x000055d21b2b1a97 in tpool::thread_pool_generic::worker_main (this=0x55d21cf67330, thread_var=0x55d21cf68460) at /test/mtest/11.3_opt/tpool/tpool_generic.cc:580
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#13 0x000014af31279de4 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
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#14 0x000014af31393609 in start_thread (arg=<optimized out>) at pthread_create.c:477
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#15 0x000014af30f7f133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
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