mysqld: malloc.c:3702: _int_malloc: Assertion `victim->fd_nextsize->bk_nextsize == victim' failed.

180330 21:10:04 [ERROR] mysqld got signal 6 ;

#2  <signal handler called>

#3  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95

#4  0x00007f01dd80e0da in _L_lock_13302 () at malloc.c:5208

#5  0x00007f01dd80bad5 in __GI___libc_malloc (bytes=196) at malloc.c:2889

#6  0x000055ad7478ec45 in sf_malloc (size=80, my_flags=4120) at /home/travis/src/mysys/safemalloc.c:118

#7  0x000055ad7477bfed in my_malloc (size=80, my_flags=4120) at /home/travis/src/mysys/my_malloc.c:101

#8  0x000055ad73bdafaa in ilink::operator new (size=80) at /home/travis/src/sql/sql_list.h:606

#9  0x000055ad73bd4ff4 in handle_connections_sockets () at /home/travis/src/sql/mysqld.cc:6845

#10 0x000055ad73bd3f09 in mysqld_main (argc=22, argv=0x55ad75db11e8) at /home/travis/src/sql/mysqld.cc:6156

#11 0x000055ad73bc8385 in main (argc=22, argv=0x7fff6cb81988) at /home/travis/src/sql/main.cc:25

perl /home/travis/rqg/runall-new.pl --duration=350 --threads=6 --seed=1522444189 --reporters=Backtrace,ErrorLog,Deadlock --validators=TransformerNoComparator --transformers=ConvertSubqueriesToViews,ConvertTablesToDerived,Count,DisableOptimizations,Distinct,EnableOptimizations,ExecuteAsCTE,ExecuteAsDeleteReturning,ExecuteAsDerived,ExecuteAsExcept,ExecuteAsExecuteImmediate,ExecuteAsInsertSelect,ExecuteAsIntersect,ExecuteAsSelectItem,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,ExecuteAsWhereSubquery,Having,InlineSubqueries,LimitRowsExamined,OrderBy,StraightJoin,ExecuteAsPreparedTwice,ExecuteAsTrigger,ExecuteAsSPTwice,ExecuteAsFunctionTwice --redefine=conf/mariadb/general-workarounds.yy --mysqld=--log_output=FILE --mysqld=--log_bin_trust_function_creators=1 --mysqld=--log-bin --mysqld=--max-statement-time=30 --mysqld=--loose-debug_assert_on_not_freed_memory=0 --views --redefine=conf/mariadb/versioning.yy --basedir=/home/travis/server --grammar=conf/runtime/performance_schema.yy --mysqld=--performance-schema --engine=MyISAM --mysqld=--default-storage-engine=MyISAM --vardir=/home/travis/logs/vardir1_3