The following bug has been logged on the website: Bug reference: 17462 Logged by: Daniil Anisimov Email address: anisimow.d@gmail.com PostgreSQL version: 14.2 Operating system: Ubuntu 20.04.4 LTS Description: When running parallel queries using pgbench with valgrind-enabled server: pgbench -i -s 1 pgbench -t 1000 -c 10 -j 10 I get: ==00:00:03:09.642 456530== Invalid read of size 2 ==00:00:03:09.642 456530== at 0x23820E: heapam_tuple_lock (heapam_handler.c:509) ==00:00:03:09.642 456530== by 0x41B07F: table_tuple_lock (tableam.h:1554) ==00:00:03:09.642 456530== by 0x41B07F: ExecUpdate (nodeModifyTable.c:1851) ==00:00:03:09.642 456530== by 0x41C7DA: ExecModifyTable (nodeModifyTable.c:2594) ==00:00:03:09.642 456530== by 0x3EF0AE: ExecProcNodeFirst (execProcnode.c:463) ==00:00:03:09.642 456530== by 0x3E7278: ExecProcNode (executor.h:257) ==00:00:03:09.642 456530== by 0x3E7278: ExecutePlan (execMain.c:1551) ==00:00:03:09.642 456530== by 0x3E7E90: standard_ExecutorRun (execMain.c:361) ==00:00:03:09.642 456530== by 0x3E7F5E: ExecutorRun (execMain.c:305) ==00:00:03:09.642 456530== by 0x5A7CAD: ProcessQuery (pquery.c:160) ==00:00:03:09.642 456530== by 0x5A888B: PortalRunMulti (pquery.c:1274) ==00:00:03:09.642 456530== by 0x5A8E3C: PortalRun (pquery.c:788) ==00:00:03:09.642 456530== by 0x5A5029: exec_simple_query (postgres.c:1214) ==00:00:03:09.642 456530== by 0x5A6FEF: PostgresMain (postgres.c:4496) ==00:00:03:09.642 456530== Address 0x6ea7f74 is in a rw- anonymous segment ==00:00:03:09.642 456530== { <insert_a_suppression_name_here> Memcheck:Addr2 fun:heapam_tuple_lock fun:table_tuple_lock fun:ExecUpdate fun:ExecModifyTable fun:ExecProcNodeFirst fun:ExecProcNode fun:ExecutePlan fun:standard_ExecutorRun fun:ExecutorRun fun:ProcessQuery fun:PortalRunMulti fun:PortalRun fun:exec_simple_query fun:PostgresMain } ==00:00:03:09.642 456530== ==00:00:03:09.642 456530== Exit program on first error (--exit-on-first-error=yes) This starts happening at commit 1e0dfd166b3fa7fc79e4fad73b6fae056bab598a
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