BUG #17151: A SEGV in optimizer - Mailing list pgsql-bugs

The following bug has been logged on the website:

Bug reference:      17151
Logged by:          Zhiyong Wu
Email address:      253540651@qq.com
PostgreSQL version: 14beta2
Operating system:   Linux version 5.13.0-1-MANJARO (builduser@LEGION)
Description:

PoC:
CREATE TEMPORARY TABLE v0 ( v1 INTEGER ) ;
 CREATE RULE v1 AS ON DELETE TO v0 DO INSERT INTO v0 SELECT OFFSET - - - -1
FOR UPDATE FOR UPDATE FOR SHARE FOR UPDATE FOR SHARE FOR SHARE ;
 ;
 DELETE FROM v0 ;
 ALTER TABLE v0 ADD UNIQUE ( v1 ) ;
 ;
Asan Report:
AddressSanitizer:DEADLYSIGNAL
=================================================================
E ( v1==82==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000032
(pc 0x7f910c8c936f bp 0x7ffecf4f37f0 sp 0x7ffecf4f2f78 T0)
 ) ;
 ;==82==The signal is caused by a READ memory access.
==82==Hint: address points to the zero page.
    #0 0x7f910c8c936e
/build/glibc-S9d2JN/glibc-2.27/string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:311
    #1 0x5581ad in __asan_memcpy (/usr/local/pgsql/bin/postgres+0x5581ad)
    #2 0xd45b8f in ExecLockRows
/home/postgres/postgres/bld/../src/backend/executor/nodeLockRows.c:161:9
    #3 0xd42768 in ExecProcNode
/home/postgres/postgres/bld/../src/include/executor/executor.h:257:9
    #4 0xd42768 in ExecLimit
/home/postgres/postgres/bld/../src/backend/executor/nodeLimit.c:96
    #5 0xcb1514 in ExecScanFetch
/home/postgres/postgres/bld/../src/backend/executor/execScan.c:133:9
    #6 0xcb0849 in ExecScan
/home/postgres/postgres/bld/../src/backend/executor/execScan.c:199:10
    #7 0xd58112 in ExecProcNode
/home/postgres/postgres/bld/../src/include/executor/executor.h:257:9
    #8 0xd58112 in ExecModifyTable
/home/postgres/postgres/bld/../src/backend/executor/nodeModifyTable.c:2423
    #9 0xc8a56c in ExecProcNode
/home/postgres/postgres/bld/../src/include/executor/executor.h:257:9
    #10 0xc8a56c in ExecutePlan
/home/postgres/postgres/bld/../src/backend/executor/execMain.c:1551
    #11 0xc8a56c in standard_ExecutorRun
/home/postgres/postgres/bld/../src/backend/executor/execMain.c:361
    #12 0xc89061 in ExecutorRun
/home/postgres/postgres/bld/../src/backend/executor/execMain.c:305:3
    #13 0x13ce4d6 in ProcessQuery
/home/postgres/postgres/bld/../src/backend/tcop/pquery.c:160:2
    #14 0x13cb899 in PortalRunMulti
/home/postgres/postgres/bld/../src/backend/tcop/pquery.c
    #15 0x13c9708 in PortalRun
/home/postgres/postgres/bld/../src/backend/tcop/pquery.c:786:5
    #16 0x13c52d5 in exec_simple_query
/home/postgres/postgres/bld/../src/backend/tcop/postgres.c:1214:10
    #17 0x13be613 in PostgresMain
/home/postgres/postgres/bld/../src/backend/tcop/postgres.c
    #18 0xe073fd in main
/home/postgres/postgres/bld/../src/backend/main/main.c:205:3
    #19 0x7f910c82fbf6 in __libc_start_main
/build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
    #20 0x499889 in _start (/usr/local/pgsql/bin/postgres+0x499889)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/build/glibc-S9d2JN/glibc-2.27/string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:311
==82==ABORTING