ASAN with clang report stack problems in sp.test

Thread 1 (Thread 0x7f8497877700 (LWP 32438)):

#0  __pthread_kill (threadid=<optimized out>, signo=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:62

#1  0x00000000029c086b in my_write_core (sig=6) at /home/sanja/maria/git/server/mysys/stacktrace.c:477

#2  0x000000000120c3ce in handle_fatal_signal (sig=6) at /home/sanja/maria/git/server/sql/signal_handler.cc:303

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58

#5  0x00007f84a15e037a in __GI_abort () at abort.c:89

#6  0x00000000007038fb in __sanitizer::Abort() ()

#7  0x00000000006fca8b in __sanitizer::Die() ()

#8  0x00000000006dd98f in __asan::ReportStackOverflow(__sanitizer::SignalContext const&) ()

#9  0x00000000006dc700 in __asan::AsanOnDeadlySignal(int, void*, void*) ()

#10 <signal handler called>

#11 0x00000000029b6791 in my_thread_name () at /home/sanja/maria/git/server/mysys/my_thr_init.c:426

#12 0x0000000002a4bed0 in DoPrefix (cs=0x608000014020, _line_=203) at /home/sanja/maria/git/server/dbug/dbug.c:1810

#13 0x0000000002a4b424 in _db_enter_ (_func_=0x32301c0 <.str.6> "alloc_root", _file_=0x3230000 <.str.1> "/home/sanja/maria/git/server/mysys/my_alloc.c", _line_=203, _stack_frame_=0x7f849782f5a0) at /home/sanja/maria/git/server/dbug/dbug.c:1130

#14 0x000000000297a3fd in alloc_root (mem_root=0x7f84978579b0, length=5) at /home/sanja/maria/git/server/mysys/my_alloc.c:203

#15 0x000000000297d0f8 in strmake_root (root=0x7f84978579b0, str=0x617000029300 "root`@`localhost` PROCEDURE `c4`(l char(8), x int, s char(16))\ninsert into t1 values (concat(l,s), x)", len=4) at /home/sanja/maria/git/server/mysys/my_alloc.c:445

#16 0x000000000093b291 in Query_arena::strmake (this=0x62a000060288, str=0x617000029300 "root`@`localhost` PROCEDURE `c4`(l char(8), x int, s char(16))\ninsert into t1 values (concat(l,s), x)", size=4) at /home/sanja/maria/git/server/sql/sql_class.h:980

#17 0x00000000009d7f76 in get_token (lip=0x7f849784b728, skip=1, length=4) at /home/sanja/maria/git/server/sql/sql_lex.cc:889

#18 0x00000000009bf74b in lex_one_token (yylval=0x7f8497831100, thd=0x62a000060270) at /home/sanja/maria/git/server/sql/sql_lex.cc:1632

#19 0x00000000009bc899 in MYSQLlex (yylval=0x7f8497831100, thd=0x62a000060270) at /home/sanja/maria/git/server/sql/sql_lex.cc:1249

#20 0x000000000107fe7d in MYSQLparse (thd=0x62a000060270) at /home/sanja/maria/git/server/sql/sql_yacc.cc:21329

#21 0x0000000000a2c249 in parse_sql (thd=0x62a000060270, parser_state=0x7f849784b720, creation_ctx=0x625000228bb8, do_pfs_digest=false) at /home/sanja/maria/git/server/sql/sql_parse.cc:9897

#22 0x00000000017125e3 in sp_compile (thd=0x62a000060270, defstr=0x7f849784d1c0, sql_mode=1411383296, creation_ctx=0x625000228bb8) at /home/sanja/maria/git/server/sql/sp.cc:754

#23 0x000000000170d5cb in db_load_routine (thd=0x62a000060270, type=TYPE_ENUM_PROCEDURE, name=0x7f849784e670, sphp=0x7f849784e860, sql_mode=1411383296, params=0x625000228b18 "l char(8), x int, s char(16)", returns=0x2e96f40 <.str.22> "", body=0x625000228b38 "insert into t1 values (concat(l,s), x)", chistics=..., definer_user_name=0x7f849784da00, definer_host_name=0x7f849784da80, created=20170908153041, modified=20170908153041, creation_ctx=0x625000228bb8) at /home/sanja/maria/git/server/sql/sp.cc:882

#24 0x000000000170f561 in db_find_routine (thd=0x62a000060270, type=TYPE_ENUM_PROCEDURE, name=0x7f849784e670, sphp=0x7f849784e860) at /home/sanja/maria/git/server/sql/sp.cc:667

#25 0x000000000170b0fe in sp_cache_routine (thd=0x62a000060270, type=TYPE_ENUM_PROCEDURE, name=0x7f849784e670, lookup_only=false, sp=0x7f849784e860) at /home/sanja/maria/git/server/sql/sp.cc:2153

#26 0x00000000017111df in sp_cache_routine (thd=0x62a000060270, rt=0x625000221f88, lookup_only=false, sp=0x7f849784e860) at /home/sanja/maria/git/server/sql/sp.cc:2106

#27 0x000000000088a6ae in open_and_process_routine (thd=0x62a000060270, prelocking_ctx=0x625000223990, rt=0x625000221f88, prelocking_strategy=0x7f849784f620, has_prelocking_list=false, ot_ctx=0x7f849784eb80, need_prelocking=0x7f849784ec20, routine_modifies_data=0x7f849784ec30) at /home/sanja/ma