Thread

BUG #15288: Logical Replication failed when inserting record which has CHECK constraint

The Post Office <noreply@postgresql.org> — 2018-07-20T19:02:41Z

The following bug has been logged on the website:

Bug reference:      15288
Logged by:          Minh Quan TRAN
Email address:      account@itscaro.me
PostgreSQL version: 10.4
Operating system:   Linux 64
Description:        

Hello,

I encountered segfault when using logical replication with a check
constraint.

I looked into /backend/replication/logical/worker.c and found out that

     - in apply_handle_insert, slot_store_cstrings is called before 
PushActiveSnapshot
     - in apply_handle_update & apply_handle_delete, slot_store_cstrings 
is called after PushActiveSnapshot

         /* Process and store remote tuple in the slot */
         oldctx = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
         slot_store_cstrings(remoteslot, rel, newtup.values);
         slot_fill_defaults(rel, estate, remoteslot);
         MemoryContextSwitchTo(oldctx);

         PushActiveSnapshot(GetTransactionSnapshot());



Core dump
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `postgres: bgworker: logical replication worker for
subscription'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  GetActiveSnapshot () at
./build/../src/backend/utils/time/snapmgr.c:843
843     ./build/../src/backend/utils/time/snapmgr.c: No such file or
directory.
#1  0x000056239fc83ecd in postquel_start (fcache=0x5623a1c83b78,
es=0x5623a1c91a70)
    at ./build/../src/backend/executor/functions.c:809
809     ./build/../src/backend/executor/functions.c: No such file or
directory.
#2  fmgr_sql (fcinfo=0x5623a1c7af98) at
./build/../src/backend/executor/functions.c:1150
1150    in ./build/../src/backend/executor/functions.c
#3  0x000056239fc75b4f in ExecInterpExpr (state=0x5623a1c7aeb8,
econtext=0x5623a1c7b898, isnull=<optimized out>)
    at ./build/../src/backend/executor/execExprInterp.c:672
672     ./build/../src/backend/executor/execExprInterp.c: No such file or
directory.
#4  0x000056239fc72a96 in ExecEvalExprSwitchContext (isNull=0x7ffdc20d1487
"", econtext=0x5623a1c7b898,
    state=<optimized out>) at
./build/../src/include/executor/executor.h:308
308     ./build/../src/include/executor/executor.h: No such file or
directory.
#5  ExecCheck (state=<optimized out>,
econtext=econtext(at)entry=0x5623a1c7b898)
    at ./build/../src/backend/executor/execExpr.c:556
556     ./build/../src/backend/executor/execExpr.c: No such file or
directory.
#6  0x000056239fdefec0 in domain_check_input
(value=value(at)entry=94711038065448, isnull=0 '\000',
    my_extra=my_extra(at)entry=0x5623a1c79bd0) at
./build/../src/backend/utils/adt/domains.c:180
180     ./build/../src/backend/utils/adt/domains.c: No such file or
directory.
#7  0x000056239fdf0100 in domain_in (fcinfo=0x7ffdc20d1530) at
./build/../src/backend/utils/adt/domains.c:255
255     in ./build/../src/backend/utils/adt/domains.c
#8  0x000056239feccd85 in InputFunctionCall
(flinfo=flinfo(at)entry=0x7ffdc20d1900,
    str=str(at)entry=0x5623a1bf4698 "{test.Type.blabla}",
typioparam=typioparam(at)entry=28498, typmod=typmod(at)entry=-1) at
./build/../src/backend/utils/fmgr/fmgr.c:1640
1640    ./build/../src/backend/utils/fmgr/fmgr.c: No such file or
directory.
#9  0x000056239fecd01d in OidInputFunctionCall (functionId=<optimized
out>,
    str=0x5623a1bf4698 "{test.Type.blabla}",
    typioparam=28498, typmod=-1) at
./build/../src/backend/utils/fmgr/fmgr.c:1743
1743    in ./build/../src/backend/utils/fmgr/fmgr.c
#10 0x000056239fd6429f in slot_store_cstrings
(slot=slot(at)entry=0x5623a1c664e8, rel=rel(at)entry=0x5623a1c60bf0,
    values=values(at)entry=0x7ffdc20d1a70) at
./build/../src/backend/replication/logical/worker.c:354
354     ./build/../src/backend/replication/logical/worker.c: No such file or
directory.
#11 0x000056239fd64cc2 in apply_handle_insert
(s=s(at)entry=0x7ffdc20d5580)
    at ./build/../src/backend/replication/logical/worker.c:612
612     in ./build/../src/backend/replication/logical/worker.c
#12 0x000056239fd65e5b in apply_dispatch (s=0x7ffdc20d5580) at
./build/../src/backend/replication/logical/worker.c:912
912     in ./build/../src/backend/replication/logical/worker.c
#13 LogicalRepApplyLoop (last_received=97628639619392) at
./build/../src/backend/replication/logical/worker.c:1119
1119    in ./build/../src/backend/replication/logical/worker.c
#14 ApplyWorkerMain (main_arg=<optimized out>) at
./build/../src/backend/replication/logical/worker.c:1671
1671    in ./build/../src/backend/replication/logical/worker.c
#15 0x000056239fd3540c in StartBackgroundWorker () at
./build/../src/backend/postmaster/bgworker.c:835
835     ./build/../src/backend/postmaster/bgworker.c: No such file or
directory.
#16 0x000056239fd42175 in do_start_bgworker (rw=0x5623a1b71870) at
./build/../src/backend/postmaster/postmaster.c:5728
5728    ./build/../src/backend/postmaster/postmaster.c: No such file or
directory.
#17 maybe_start_bgworkers () at
./build/../src/backend/postmaster/postmaster.c:5941
5941    in ./build/../src/backend/postmaster/postmaster.c
#18 0x000056239fd42d35 in sigusr1_handler (postgres_signal_arg=<optimized
out>)
    at ./build/../src/backend/postmaster/postmaster.c:5121
5121    in ./build/../src/backend/postmaster/postmaster.c
#19 <signal handler called>
#20 0x00007f533261a3a3 in __select_nocancel () at
../sysdeps/unix/syscall-template.S:84
84      ../sysdeps/unix/syscall-template.S: No such file or directory.
#21 0x000056239fae8c71 in ServerLoop () at
./build/../src/backend/postmaster/postmaster.c:1719
1719    ./build/../src/backend/postmaster/postmaster.c: No such file or
directory.
#22 0x000056239fd4407a in PostmasterMain (argc=3, argv=0x5623a1b49ef0)
    at ./build/../src/backend/postmaster/postmaster.c:1363
1363    in ./build/../src/backend/postmaster/postmaster.c
#23 0x000056239faeac74 in main (argc=3, argv=0x5623a1b49ef0) at
./build/../src/backend/main/main.c:228
228     ./build/../src/backend/main/main.c: No such file or directory.

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