UBSAN: runtime error: load of address 0x... with insufficient space for an object of type 'uchar' in sys_vars.inl

export UBSAN_OPTIONS=print_stacktrace=1

export ASAN_OPTIONS=quarantine_size_mb=512:atexit=0:detect_invalid_pointer_pairs=3:dump_instruction_bytes=1:abort_on_error=1:allocator_may_return_null=1

mariadbd --version

/test/11.1_dbg_san/sql/sys_vars.inl:527:14: runtime error: load of address 0x55c73e66df80 with insufficient space for an object of type 'uchar'

0x55c73e66df80: note: pointer points here

 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00

              ^ 

    #0 0x55c7313b4b42 in Sys_var_charptr_base::cleanup() /test/11.1_dbg_san/sql/sys_vars.inl:527

    #1 0x55c7303b3830 in sys_var_end() /test/11.1_dbg_san/sql/set_var.cc:113

    #2 0x55c7301961e5 in clean_up /test/11.1_dbg_san/sql/mysqld.cc:2072

    #3 0x55c7301ba3a3 in mysqld_main(int, char**) /test/11.1_dbg_san/sql/mysqld.cc:6142

    #4 0x55c73018fdcc in main /test/11.1_dbg_san/sql/main.cc:34

    #5 0x14a17842a1c9 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58

    #6 0x14a17842a28a in __libc_start_main_impl ../csu/libc-start.c:360

    #7 0x55c730083824 in _start (/test/UBASAN_MD190824-mariadb-11.1.7-linux-x86_64-dbg/bin/mariadbd+0x7a57824) (BuildId: 8e2791b295ca8f9bb9b533507d556457fb12c0d4)

/test/11.1_dbg_san/sql/sys_vars.inl:528:25: runtime error: store to address 0x55c73e66df80 with insufficient space for an object of type 'uchar'

0x55c73e66df80: note: pointer points here

 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00

              ^ 

    #0 0x55c7313b4bd8 in Sys_var_charptr_base::cleanup() /test/11.1_dbg_san/sql/sys_vars.inl:528

    #1 0x55c7303b3830 in sys_var_end() /test/11.1_dbg_san/sql/set_var.cc:113

    #2 0x55c7301961e5 in clean_up /test/11.1_dbg_san/sql/mysqld.cc:2072

    #3 0x55c7301ba3a3 in mysqld_main(int, char**) /test/11.1_dbg_san/sql/mysqld.cc:6142

    #4 0x55c73018fdcc in main /test/11.1_dbg_san/sql/main.cc:34

    #5 0x14a17842a1c9 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58

    #6 0x14a17842a28a in __libc_start_main_impl ../csu/libc-start.c:360

    #7 0x55c730083824 in _start (/test/UBASAN_MD190824-mariadb-11.1.7-linux-x86_64-dbg/bin/mariadbd+0x7a57824) (BuildId: 8e2791b295ca8f9bb9b533507d556457fb12c0d4)