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From: Tom Lane <tgl@sss.pgh.pa.us>
To: sbernikov@gmail.com
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17054: Memory corruption in logical replication worker when
 replicating into partitioned table
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PG Bug reporting form <noreply@postgresql.org> writes:
> When logical replication target is a partitioned table then execution of=
 any
> DDL on source table leads to crash of target (subscriber) server.

Thanks for the report!  I duplicated the crash on v13 branch tip,
although it's hitting an assertion failure before reaching any segfault:

#2  0x00000000008f466a in ExceptionalCondition (
    conditionName=3DconditionName@entry=3D0xa5eae0 "natts =3D=3D rel->attr=
map->maplen", errorType=3DerrorType@entry=3D0x948cc9 "FailedAssertion", =

    fileName=3DfileName@entry=3D0xa52956 "worker.c", =

    lineNumber=3DlineNumber@entry=3D490) at assert.c:67
#3  0x0000000000777741 in slot_modify_cstrings (slot=3Dslot@entry=3D0x2ec6=
e40, =

    srcslot=3D<optimized out>, rel=3Drel@entry=3D0x2eca918, =

    values=3Dvalues@entry=3D0x7fffb3506480, replaces=3Dreplaces@entry=3D0x=
7fffb3509880)
    at worker.c:490
#4  0x00000000007785e7 in apply_handle_tuple_routing (
    edata=3Dedata@entry=3D0x2ea45a0, remoteslot=3Dremoteslot@entry=3D0x2ea=
48a0, =

    newtup=3Dnewtup@entry=3D0x7fffb3506480, operation=3Doperation@entry=3D=
CMD_UPDATE)
    at worker.c:1153
#5  0x0000000000778e74 in apply_handle_update (s=3Ds@entry=3D0x7fffb3509fa=
0)
    at worker.c:846
#6  0x000000000077963c in apply_dispatch (s=3D0x7fffb3509fa0) at worker.c:=
1415
#7  LogicalRepApplyLoop (last_received=3D254887792) at worker.c:1624
#8  ApplyWorkerMain (main_arg=3D<optimized out>) at worker.c:2171
#9  0x0000000000743ec9 in StartBackgroundWorker () at bgworker.c:890

Interestingly, the same test case does NOT crash for me on master.
So apparently we fixed something that should have been back-patched.

			regards, tom lane