4. PostgreSQL Server (Address Sanitizer Enabled) Subprocess Went down at Function '__asan_memcpy' - Mailing list pgsql-bugs

Description: PostgreSQL Server (Address Sanitizer Enabled) Subprocess Went down at Function ‘__asan_memcpy’

PostgreSQL Server Version: PostgreSQL 15.2 on x86_64-pc-linux-gnu, compiled by Ubuntu clang version 12.0.1, 64-bit

Discoverer: Jingzhou Fu, Jie Liang and Zhiyong Wu in WingTecher Lab of Tsinghua University and Shuimuyulin ltd

Email address: fjz22@mails.tsinghua.edu.cn  ,   wuzy21@mails.tsinghua.edu.cn  ,  ljiee@mail.tsinghua.edu.cn

PoC:

```sql

CREATE FUNCTION f1(cstring)

   RETURNS interval_tbl

   AS 'textin'

   LANGUAGE internal STRICT IMMUTABLE;

CREATE FUNCTION interval_tbl_of(interval_tbl)

   RETURNS cstring

   AS 'textout'

   LANGUAGE internal STRICT IMMUTABLE;

create type interval_tbl (

    input = f1,

    output = interval_tbl_of,

    like = int8

);

SELECT interval_tbl_of('interval_tbl'::text::interval_tbl);

```

ASAN Report:

```

==2890==ERROR: AddressSanitizer: memcpy-param-overlap: memory ranges [0x625000041218,0x625000041224) and [0x62500004121c, 0x625000041228) overlap

    #0 0x519d74 in __asan_memcpy (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x519d74)

    #1 0x1bd1956 in text_to_cstring (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1bd1956)

    #2 0x1bd5515 in textout (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1bd5515)

    #3 0xe84bc4 in ExecInterpExpr (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0xe84bc4)

    #4 0xe81ced in ExecInterpExprStillValid (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0xe81ced)

    #5 0x13589b4 in ExecEvalExprSwitchContext (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x13589b4)

    #6 0x1358546 in evaluate_expr (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1358546)

    #7 0x135d9c4 in evaluate_function (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x135d9c4)

    #8 0x135b520 in simplify_function (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x135b520)

    #9 0x134afda in eval_const_expressions_mutator (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x134afda)

    #10 0x111caae in expression_tree_mutator (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x111caae)

    #11 0x1355113 in eval_const_expressions_mutator (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1355113)

    #12 0x111d807 in expression_tree_mutator (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x111d807)

    #13 0x1355113 in eval_const_expressions_mutator (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1355113)

    #14 0x1349342 in eval_const_expressions (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1349342)

    #15 0x12a58ff in preprocess_expression (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x12a58ff)

    #16 0x12a0185 in subquery_planner (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x12a0185)

    #17 0x129ba26 in standard_planner (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x129ba26)

    #18 0x129ae4b in planner (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x129ae4b)

    #19 0x16e1e65 in pg_plan_query (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e1e65)

    #20 0x16e2861 in pg_plan_queries (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e2861)

    #21 0x16e924c in exec_simple_query (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e924c)

    #22 0x16e7a62 in PostgresMain (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e7a62)

    #23 0x144c17a in BackendRun (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x144c17a)

    #24 0x144ad84 in BackendStartup (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x144ad84)

    #25 0x14481e5 in ServerLoop (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x14481e5)

    #26 0x1443e0e in PostmasterMain (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1443e0e)

    #27 0x106ebf1 in main (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x106ebf1)

    #28 0x7fc0c3cfb082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

    #29 0x49fc0d in _start (/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x49fc0d)

```