On Sun, 14 Apr 2024 at 00:12, Tom Lane <t...@sss.pgh.pa.us> wrote:
> If we were only supposed to sleep 0.1 seconds, how is it waiting
> for 600000 ms (and, presumably, repeating that)?  The logic in
> pg_sleep is pretty simple, and it's hard to think of anything except
> the system clock jumping (far) backwards that would make this
> happen.  Any chance of extracting the local variables from the
> pg_sleep stack frame?

- I now have 2 separate runs stuck on pg_sleep() - HEAD / REL_16_STABLE
- I'll keep them (stuck) for this week, in case there's more we can get
from them (and to see how long they take)
- Attached are 'bt full' outputs for both (b.txt - HEAD / a.txt -
REL_16_STABLE)

A few things to add:
- To reiterate, this instance has gcc v13.2 compiled without any
flags (my first time ever TBH) IIRC 'make -k check' came out okay,
so at this point I don't think I did something obviously wrong when
building gcc from git.
- I installed gcc v14.0.1 experimental on massasauga (also an aarch64
and built from git) and despite multiple runs, it seems to be doing okay
[1].
- Next week (if I'm still scratching my head - and unless someone advises
otherwise), I'll upgrade parula to gcc 14 experimental to see if this is
about
gcc maturity on graviton (for some reason). I don't expect much to come
out of it though (given Tomas testing on rpi5, but doesn't hurt)

Ref:
1.
https://buildfarm.postgresql.org/cgi-bin/show_history.pl?nm=massasauga&br=REL_12_STABLE

-
robins
[postgres@ip-172-31-18-25 ~]$ pstack 26147
#0  0x0000ffffadeda954 in epoll_pwait () from /lib64/libc.so.6
#1  0x0000000000842888 in WaitEventSetWaitBlock (nevents=1, 
occurred_events=<optimized out>, cur_timeout=600000, set=0x3148fac0) at 
latch.c:1570
#2  WaitEventSetWait (set=0x3148fac0, timeout=timeout@entry=600000, 
occurred_events=occurred_events@entry=0xffffd1194748, nevents=nevents@entry=1, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:1516
#3  0x0000000000842c44 in WaitLatch (latch=<optimized out>, 
wakeEvents=wakeEvents@entry=41, timeout=600000, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:538
#4  0x000000000090b7b4 in pg_sleep (fcinfo=<optimized out>) at misc.c:406
#5  0x0000000000698430 in ExecInterpExpr (state=0x316a6040, 
econtext=0x316a5e38, isnull=<optimized out>) at execExprInterp.c:764
#6  0x00000000006d0898 in ExecEvalExprSwitchContext (isNull=0xffffd11948bf, 
econtext=0x316a5e38, state=<optimized out>) at 
../../../src/include/executor/executor.h:356
#7  ExecProject (projInfo=<optimized out>) at 
../../../src/include/executor/executor.h:390
#8  ExecResult (pstate=<optimized out>) at nodeResult.c:135
#9  0x00000000006b92ec in ExecProcNode (node=0x316a5d28) at 
../../../src/include/executor/executor.h:274
#10 gather_getnext (gatherstate=0x316a5b38) at nodeGather.c:287
#11 ExecGather (pstate=0x316a5b38) at nodeGather.c:222
#12 0x000000000069c36c in ExecProcNode (node=0x316a5b38) at 
../../../src/include/executor/executor.h:274
#13 ExecutePlan (execute_once=<optimized out>, dest=0x31641e90, 
direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, 
operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x316a5b38, 
estate=0x316a5910) at execMain.c:1646
#14 standard_ExecutorRun (queryDesc=0x316459c0, direction=<optimized out>, 
count=0, execute_once=<optimized out>) at execMain.c:363
#15 0x0000000000871564 in PortalRunSelect (portal=portal@entry=0x31512fb0, 
forward=forward@entry=true, count=0, count@entry=9223372036854775807, 
dest=dest@entry=0x31641e90) at pquery.c:924
#16 0x0000000000872d80 in PortalRun (portal=portal@entry=0x31512fb0, 
count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=true, 
run_once=run_once@entry=true, dest=dest@entry=0x31641e90, 
altdest=altdest@entry=0x31641e90, qc=qc@entry=0xffffd1194c70) at pquery.c:768
#17 0x000000000086ea54 in exec_simple_query 
(query_string=query_string@entry=0x31493c90 "SELECT pg_sleep(0.1);") at 
postgres.c:1274
#18 0x000000000086f590 in PostgresMain (dbname=<optimized out>, 
username=<optimized out>) at postgres.c:4680
#19 0x000000000086ab20 in BackendMain (startup_data=<optimized out>, 
startup_data_len=<optimized out>) at backend_startup.c:105
#20 0x00000000007c54d8 in postmaster_child_launch 
(child_type=child_type@entry=B_BACKEND, 
startup_data=startup_data@entry=0xffffd1195138 "", 
startup_data_len=startup_data_len@entry=4, 
client_sock=client_sock@entry=0xffffd1195140) at launch_backend.c:265
#21 0x00000000007c8ec0 in BackendStartup (client_sock=0xffffd1195140) at 
postmaster.c:3593
#22 ServerLoop () at postmaster.c:1674
#23 0x00000000007cab68 in PostmasterMain (argc=argc@entry=8, 
argv=argv@entry=0x3148f320) at postmaster.c:1372
#24 0x0000000000496cb8 in main (argc=8, argv=0x3148f320) at main.c:197
[postgres@ip-172-31-18-25 ~]$


 2072 root       20   0  117M  4376  3192 S  0.0  0.0  0:00.00 │  └─ 
/usr/sbin/CROND -n
 2087 postgres   20   0 20988  6496  5504 S  0.0  0.0  0:00.00 │     ├─ 
/usr/sbin/sendmail -FCronDaemon -i -odi -oem -oi -t -f postgres
 2092 postgres   20   0 20960  6328  5336 S  0.0  0.0  0:00.00 │     │  
└─ /usr/sbin/postdrop -r
 2074 postgres   20   0  111M  2660  2488 S  0.0  0.0  0:00.00 │     └─ 
/bin/sh -c cd /opt/postgres/build-farm-14 && 
PATH=/opt/gcc/home/ec2-user/proj/gcc/target/bin/:$PATH:/usr/local/bin 
PERL5LIB=/home/postgres/perl5/lib/perl5  ./run_build.pl 
--config=build-farm.conf HEAD --verbose
 2075 postgres   20   0  128M 18128  3940 S  0.0  0.1  0:00.08 │        
└─ /usr/bin/perl ./run_build.pl --config=build-farm.conf HEAD --verbose
 8751 postgres   20   0  111M  2660  2480 S  0.0  0.0  0:00.00 │           
└─ sh -c { cd pgsql.build/src/test/regress && make NO_LOCALE=1 check; echo 
$? > /opt/postgres/build-farm-14/buildroot/HEAD/parula.lastrun-logs/laststatus; 
} > 
/opt/postgres/build-farm-14/buildroot/HEAD/parula.lastrun-logs/lastcommand.log 
2>&1; read st < /opt/postgres/buil
 8752 postgres   20   0  110M  2084  1712 S  0.0  0.0  0:00.00 │              
└─ make NO_LOCALE=1 check
 9947 postgres   20   0  111M  2836  2640 S  0.0  0.0  0:00.00 │              
   └─ /bin/sh -c echo "# +++ regress check in src/test/regress +++" && 
PATH="/opt/postgres/build-farm-14/buildroot/HEAD/pgsql.build/tmp_install/opt/postgres/build-farm-14/buildroot/HEAD/inst/bin:/opt/postgres/build-farm-14/buildroot/HEAD/pgsql.build/src/test/regress:$P
 9948 postgres   20   0  121M  5540  4716 S  0.0  0.0  0:00.08 │              
      └─ ../../../src/test/regress/pg_regress --temp-instance=./tmp_check 
--inputdir=. --bindir= --temp-config=/tmp/buildfarm-RoyKTG/bfextra.conf 
--no-locale --port=5678 --dlpath=. --max-concurrent-tests=20 --port=5678 
--schedule=./parallel_schedule
26137 postgres   20   0 15448  5636  4816 S  0.0  0.0  0:00.01 │              
         ├─ psql -X -a -q -d regression -v HIDE_TABLEAM=on -v 
HIDE_TOAST_COMPRESSION=on
 9960 postgres   20   0  167M 20704 19564 S  0.0  0.1  0:04.08 │              
         └─ postgres -D 
/opt/postgres/build-farm-14/buildroot/HEAD/pgsql.build/src/test/regress/tmp_check/data
 -F -c listen_addresses= -k /tmp/pg_regress-wqlrdh
26147 postgres   20   0  172M 41980 37516 S  0.0  0.3  0:00.06 │              
            ├─ postgres: postgres regression [local] SELECT
 9966 postgres   20   0  170M  8684  7256 S  0.0  0.1  0:00.02 │              
            ├─ postgres: logical replication launcher
 9965 postgres   20   0  169M  8548  7124 S  0.0  0.1  0:00.20 │              
            ├─ postgres: autovacuum launcher
 9964 postgres   20   0  167M 10044  8876 S  0.0  0.1  0:00.07 │              
            ├─ postgres: walwriter
 9962 postgres   20   0  167M  5388  4232 S  0.0  0.0  0:00.05 │              
            ├─ postgres: background writer
 9961 postgres   20   0  168M  114M  112M S  0.0  0.7  0:00.15 │              
            └─ postgres: checkpointer
 

#0  0x0000ffffadeda954 in epoll_pwait () from /lib64/libc.so.6
No symbol table info available.
#1  0x0000000000842888 in WaitEventSetWaitBlock (nevents=1, 
occurred_events=<optimized out>, cur_timeout=600000, set=0x3148fac0) at 
latch.c:1570
        returned_events = 0
        rc = <optimized out>
        cur_event = <optimized out>
        cur_epoll_event = <optimized out>
        __func__ = "WaitEventSetWaitBlock"
#2  WaitEventSetWait (set=0x3148fac0, timeout=timeout@entry=600000, 
occurred_events=occurred_events@entry=0xffffd1194748, nevents=nevents@entry=1, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:1516
        rc = <optimized out>
        returned_events = 0
        start_time = <optimized out>
        cur_time = <optimized out>
        cur_timeout = 600000
#3  0x0000000000842c44 in WaitLatch (latch=<optimized out>, 
wakeEvents=wakeEvents@entry=41, timeout=600000, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:538
        event = {pos = 9484124, events = 0, fd = 1713148331, user_data = 
0x44f0b}
#4  0x000000000090b7b4 in pg_sleep (fcinfo=<optimized out>) at misc.c:406
        delay = <optimized out>
        delay_ms = <optimized out>
        endtime = 0
#5  0x0000000000698430 in ExecInterpExpr (state=0x316a6040, 
econtext=0x316a5e38, isnull=<optimized out>) at execExprInterp.c:764
        fcinfo = 0x316a6198
        args = 0x316a61b8
        nargs = <optimized out>
        d = <optimized out>
        op = <optimized out>
        resultslot = 0x316a5f58
        innerslot = 0x0
        outerslot = 0x0
        scanslot = 0x0
        dispatch_table = {0x697590 <ExecInterpExpr+2044>, 0x69728c 
<ExecInterpExpr+1272>, 0x697268 <ExecInterpExpr+1236>, 0x697244 
<ExecInterpExpr+1200>, 0x697208 <ExecInterpExpr+1140>, 0x6978cc 
<ExecInterpExpr+2872>, 0x697890 <ExecInterpExpr+2812>, 0x697874 
<ExecInterpExpr+2784>, 0x697858 <ExecInterpExpr+2756>, 0x69783c 
<ExecInterpExpr+2728>,
          0x697824 <ExecInterpExpr+2704>, 0x6977d4 <ExecInterpExpr+2624>, 
0x697784 <ExecInterpExpr+2544>, 0x697734 <ExecInterpExpr+2464>, 0x6976fc 
<ExecInterpExpr+2408>, 0x6976b4 <ExecInterpExpr+2336>, 0x697694 
<ExecInterpExpr+2304>, 0x697664 <ExecInterpExpr+2256>, 0x697620 
<ExecInterpExpr+2188>, 0x6975d4 <ExecInterpExpr+2112>,
          0x6975bc <ExecInterpExpr+2088>, 0x696dd8 <ExecInterpExpr+68>, 
0x696de0 <ExecInterpExpr+76>, 0x697d7c <ExecInterpExpr+4072>, 0x696e00 
<ExecInterpExpr+108>, 0x696e08 <ExecInterpExpr+116>, 0x697dc0 
<ExecInterpExpr+4140>, 0x697d60 <ExecInterpExpr+4044>, 0x697d1c 
<ExecInterpExpr+3976>, 0x697d04 <ExecInterpExpr+3952>,
          0x697ce0 <ExecInterpExpr+3916>, 0x697cbc <ExecInterpExpr+3880>, 
0x697c84 <ExecInterpExpr+3824>, 0x697c68 <ExecInterpExpr+3796>, 0x697c48 
<ExecInterpExpr+3764>, 0x697c34 <ExecInterpExpr+3744>, 0x697c20 
<ExecInterpExpr+3724>, 0x697bfc <ExecInterpExpr+3688>, 0x697bd4 
<ExecInterpExpr+3648>, 0x697bb0 <ExecInterpExpr+3612>,
          0x697b88 <ExecInterpExpr+3572>, 0x697b70 <ExecInterpExpr+3548>, 
0x697b58 <ExecInterpExpr+3524>, 0x697b3c <ExecInterpExpr+3496>, 0x697b10 
<ExecInterpExpr+3452>, 0x697ac8 <ExecInterpExpr+3380>, 0x697a1c 
<ExecInterpExpr+3208>, 0x697a08 <ExecInterpExpr+3188>, 0x6979dc 
<ExecInterpExpr+3144>, 0x6979ac <ExecInterpExpr+3096>,
          0x697944 <ExecInterpExpr+2992>, 0x697930 <ExecInterpExpr+2972>, 
0x698990 <ExecInterpExpr+7164>, 0x69791c <ExecInterpExpr+2952>, 0x697908 
<ExecInterpExpr+2932>, 0x698018 <ExecInterpExpr+4740>, 0x697fec 
<ExecInterpExpr+4696>, 0x697f68 <ExecInterpExpr+4564>, 0x697f24 
<ExecInterpExpr+4496>, 0x697f10 <ExecInterpExpr+4476>,
          0x697ef8 <ExecInterpExpr+4452>, 0x697ee0 <ExecInterpExpr+4428>, 
0x697ec8 <ExecInterpExpr+4404>, 0x697ea8 <ExecInterpExpr+4372>, 0x697e8c 
<ExecInterpExpr+4344>, 0x697e70 <ExecInterpExpr+4316>, 0x697e54 
<ExecInterpExpr+4288>, 0x697ae4 <ExecInterpExpr+3408>, 0x697dfc 
<ExecInterpExpr+4200>, 0x698128 <ExecInterpExpr+5012>,
          0x697e3c <ExecInterpExpr+4264>, 0x697e28 <ExecInterpExpr+4244>, 
0x697e10 <ExecInterpExpr+4220>, 0x698114 <ExecInterpExpr+4992>, 0x6980fc 
<ExecInterpExpr+4968>, 0x6980e8 <ExecInterpExpr+4948>, 0x6980c4 
<ExecInterpExpr+4912>, 0x698098 <ExecInterpExpr+4868>, 0x698080 
<ExecInterpExpr+4844>, 0x698050 <ExecInterpExpr+4796>,
          0x6981b0 <ExecInterpExpr+5148>, 0x698178 <ExecInterpExpr+5092>, 
0x698160 <ExecInterpExpr+5068>, 0x69813c <ExecInterpExpr+5032>, 0x696e28 
<ExecInterpExpr+148>, 0x696e34 <ExecInterpExpr+160>, 0x697548 
<ExecInterpExpr+1972>, 0x697504 <ExecInterpExpr+1904>, 0x6974d8 
<ExecInterpExpr+1860>, 0x697418 <ExecInterpExpr+1668>,
          0x697360 <ExecInterpExpr+1484>, 0x6972b0 <ExecInterpExpr+1308>, 
0x697108 <ExecInterpExpr+884>, 0x697014 <ExecInterpExpr+640>, 0x696f00 
<ExecInterpExpr+364>, 0x696fec <ExecInterpExpr+600>, 0x696ed8 
<ExecInterpExpr+324>, 0x696eb0 <ExecInterpExpr+284>, 0x696e98 
<ExecInterpExpr+260>, 0x698734 <ExecInterpExpr+6560>}
#6  0x00000000006d0898 in ExecEvalExprSwitchContext (isNull=0xffffd11948bf, 
econtext=0x316a5e38, state=<optimized out>) at 
../../../src/include/executor/executor.h:356
        oldContext = 0x316a5810
#7  ExecProject (projInfo=<optimized out>) at 
../../../src/include/executor/executor.h:390
        econtext = 0x316a5e38
        state = <optimized out>
        slot = 0x316a5f58
        isnull = false
#8  ExecResult (pstate=<optimized out>) at nodeResult.c:135
        node = <optimized out>
        outerTupleSlot = <optimized out>
        outerPlan = <optimized out>
        econtext = <optimized out>
#9  0x00000000006b92ec in ExecProcNode (node=0x316a5d28) at 
../../../src/include/executor/executor.h:274
No locals.
#10 gather_getnext (gatherstate=0x316a5b38) at nodeGather.c:287
        estate = 0x316a5910
        outerPlan = 0x316a5d28
        outerTupleSlot = <optimized out>
        fslot = 0x316a6688
        tup = <optimized out>
#11 ExecGather (pstate=0x316a5b38) at nodeGather.c:222
        node = 0x316a5b38
        slot = <optimized out>
        econtext = 0x316a5c48
#12 0x000000000069c36c in ExecProcNode (node=0x316a5b38) at 
../../../src/include/executor/executor.h:274
No locals.
#13 ExecutePlan (execute_once=<optimized out>, dest=0x31641e90, 
direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, 
operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x316a5b38, 
estate=0x316a5910) at execMain.c:1646
        slot = <optimized out>
        current_tuple_count = 0
#14 standard_ExecutorRun (queryDesc=0x316459c0, direction=<optimized out>, 
count=0, execute_once=<optimized out>) at execMain.c:363
        estate = 0x316a5910
        operation = CMD_SELECT
        dest = 0x31641e90
        sendTuples = 252
        oldcontext = 0x316458c0
        __func__ = "standard_ExecutorRun"
#15 0x0000000000871564 in PortalRunSelect (portal=portal@entry=0x31512fb0, 
forward=forward@entry=true, count=0, count@entry=9223372036854775807, 
dest=dest@entry=0x31641e90) at pquery.c:924
        queryDesc = 0x316459c0
        direction = <optimized out>
        nprocessed = <optimized out>
        __func__ = "PortalRunSelect"
#16 0x0000000000872d80 in PortalRun (portal=portal@entry=0x31512fb0, 
count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=true, 
run_once=run_once@entry=true, dest=dest@entry=0x31641e90, 
altdest=altdest@entry=0x31641e90, qc=qc@entry=0xffffd1194c70) at pquery.c:768
        _save_exception_stack = 0xffffd1194f28
        _save_context_stack = 0x0
        _local_sigjmp_buf = {{__jmpbuf = {1, 827404208, 826886624, 826886672, 
0, 828645008, 0, 2, 14136744, 826886704, 281474189838832, 7012751731486407017, 
0, 7012864883735583905, 0, 13830554455654793216, 0, 0, 0, 0, 0, 0}, 
__mask_was_saved = 0, __saved_mask = {__val = {14136744, 826886704, 1, 
12271232, 14135296, 14136808, 281474189839232,
                10405572, 281474189839264, 4891912, 2, 827404208, 
281474189839296, 8841760, 826886696, 8841696}}}}
        result = <optimized out>
        nprocessed = <optimized out>
        saveTopTransactionResourceOwner = 0x314d1e28
        saveTopTransactionContext = 0x314bb5c0
        saveActivePortal = 0x0
        saveResourceOwner = 0x314d1e28
        savePortalContext = 0x0
        saveMemoryContext = 0x314bb5c0
        __func__ = "PortalRun"
#17 0x000000000086ea54 in exec_simple_query 
(query_string=query_string@entry=0x31493c90 "SELECT pg_sleep(0.1);") at 
postgres.c:1274
        cmdtaglen = 6
        snapshot_set = <optimized out>
        per_parsetree_context = 0x0
        plantree_list = 0x31641e40
        parsetree = <error reading variable parsetree 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        commandTag = <optimized out>
        qc = {commandTag = CMDTAG_UNKNOWN, nprocessed = 0}
        querytree_list = <error reading variable querytree_list 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        portal = 0x31512fb0
        receiver = 0x31641e90
        format = 0
        cmdtagname = <error reading variable cmdtagname 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        parsetree_item__state = {l = 0x31494a10, i = 0}
        dest = DestRemote
        oldcontext = 0x314bb5c0
        parsetree_list = 0x31494a10
        parsetree_item = 0x31494a28
        save_log_statement_stats = <optimized out>
        was_logged = true
        use_implicit_block = false
        msec_str = 
"\000\000\000\000\377\377\000\000\000\000\000\000\000\000\000\000`\024\327\000\000\000\000\000Q\000\000\000\000\000\000"
        __func__ = "exec_simple_query"
#18 0x000000000086f590 in PostgresMain (dbname=<optimized out>, 
username=<optimized out>) at postgres.c:4680
        query_string = <error reading variable query_string 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        firstchar = <optimized out>
        input_message = {data = 0x31493c90 "SELECT pg_sleep(0.1);", len = 22, 
maxlen = 1024, cursor = 22}
        local_sigjmp_buf = {{__jmpbuf = {14135296, 14135296, 8833856, 1, 
281474189841896, 11850784, 826883984, 13979648, 0, 14080304, 281474189839520, 
7012751731486456521, 15680, 7012864883735583169, 4631952216750555136, 0, 0, 0, 
0, 0, 0, 0}, __mask_was_saved = 1, __saved_mask = {__val = {4194304, 14127104, 
14135296, 24, 826864816, 10405400,
                281474189840416, 8724296, 281474189840480, 8825600, 
281474189840704, 4, 281474189840696, 1, 281474189841896, 1}}}}
        send_ready_for_query = false
        idle_in_transaction_timeout_enabled = false
        idle_session_timeout_enabled = false
        __func__ = "PostgresMain"
#19 0x000000000086ab20 in BackendMain (startup_data=<optimized out>, 
startup_data_len=<optimized out>) at backend_startup.c:105
        bsdata = <optimized out>
#20 0x00000000007c54d8 in postmaster_child_launch 
(child_type=child_type@entry=B_BACKEND, 
startup_data=startup_data@entry=0xffffd1195138 "", 
startup_data_len=startup_data_len@entry=4, 
client_sock=client_sock@entry=0xffffd1195140) at launch_backend.c:265
        pid = <optimized out>
#21 0x00000000007c8ec0 in BackendStartup (client_sock=0xffffd1195140) at 
postmaster.c:3593
        bn = 0x314cafc8
        pid = <optimized out>
        startup_data = {canAcceptConnections = CAC_OK}
        __func__ = "BackendStartup"
#22 ServerLoop () at postmaster.c:1674
        s = {sock = 9, raddr = {addr = {ss_family = 1,
              __ss_padding = 
"\000\000\000\000\000\000pEI1\000\000\000\000\250Q\031\321\377\377\000\000\262Q\031\321\377\377\000\000\000\340\367\255\377\377\000\000\000\367`\256\377\377\000\000
 
\000\000\000\000\000\000\000\260Q\031\321\377\377\000\000\000\000\000\000\000\000\000\000\060R\031\321\377\377\000\000(R\031\321\377\377\000\000(\363K1\000\000\000\000i-L1",
 '\000' <repeats 13 times>, "f\023\243hh\223\231", __ss_align = 
281474189840960}, salen = 2}}
        i = 0
        now = <optimized out>
        last_lockfile_recheck_time = 1713117687
        last_touch_time = 1713117687
        events = {{pos = 1, events = 2, fd = 7, user_data = 0x0}, {pos = 1, 
events = 2, fd = 7, user_data = 0x0}, {pos = 32768, events = 0, fd = 8, 
user_data = 0x1}, {pos = 10739224, events = 0, fd = -786868688, user_data = 
0x400}, {pos = -786868496, events = 65535, fd = -1377151316, user_data = 
0xffffadf7e000 <argp_default_argp+16>}, {
            pos = 8, events = 0, fd = -786868632, user_data = 0x0}, {pos = 
-786868384, events = 65535, fd = 66305, user_data = 0xb808831}, {pos = 16832, 
events = 2, fd = 1001, user_data = 0x0}, {pos = 0, events = 0, fd = 6, 
user_data = 0x1000}, {pos = 0, events = 0, fd = -786868368, user_data = 
0xffffade7ca0c <malloc+156>}, {pos = -786868352,
            events = 65535, fd = -1377318388, user_data = 0xffffadf7fa88 
<main_arena>}, {pos = 4096, events = 0, fd = -1369376944, user_data = 
0xffffae60f700}, {pos = 80, events = 0, fd = 827061624, user_data = 0x0}, {pos 
= 1, events = 0, fd = 0, user_data = 0xb20310}, {pos = -1377763712, events = 
65535, fd = 1867, user_data = 0x1}, {
            pos = -1377818740, events = 65535, fd = -786868320, user_data = 
0xffffae5f3cbc <do_lookup_x+556>}, {pos = -1374700376, events = 65535, fd = 
173, user_data = 0x1}, {pos = -1374708840, events = 65535, fd = -1369314960, 
user_data = 0x5}, {pos = -1369314960, events = 65535, fd = -786868120, 
user_data = 0xffffd1195864}, {
            pos = 826860128, events = 0, fd = -786868080, user_data = 
0xffffae5f4644 <_dl_lookup_symbol_x+260>}, {pos = 2090263927, events = 0, fd = 
-1369258712, user_data = 0x455fee}, {pos = -786867736, events = 65535, fd = 
-1369359776, user_data = 0x1}, {pos = -1369259616, events = 65535, fd = 1, 
user_data = 0xffffd1195930}, {pos = 0,
            events = 0, fd = 32, user_data = 0x0}, {pos = 6, events = 0, fd = 
-1369360088, user_data = 0x0}, {pos = -786867920, events = 65535, fd = 
-786867904, user_data = 0x43fec0}, {pos = 4546542, events = 0, fd = -786868120, 
user_data = 0xffffd1195864}, {pos = 32660373, events = 0, fd = 826860128, 
user_data = 0x0}, {pos = 1, events = 0,
            fd = 0, user_data = 0xffff00000001}, {pos = -1369259616, events = 
65535, fd = -786867808, user_data = 0xffffae5f8820 <_dl_fixup+192>}, {pos = 0, 
events = 0, fd = 13961616, user_data = 0xffffae60ef00}, {pos = -1369377024, 
events = 65535, fd = 14077952, user_data = 0xd6d930 <NumListenSockets>}, {pos = 
826860128, events = 0,
            fd = 10766128, user_data = 0xb0fe70}, {pos = 11666192, events = 0, 
fd = 827059992, user_data = 0x99936868a3136600}, {pos = -786867872, events = 
65535, fd = 10371416, user_data = 0x314bef18}, {pos = 0, events = 0, fd = 
-1369258712, user_data = 0xffffd1195940}, {pos = 448139, events = 0, fd = 
-786867256, user_data = 0xffffae0fae38}, {
            pos = -1369314960, events = 65535, fd = 0, user_data = 0x314bef18}, 
{pos = -786867808, events = 65535, fd = 10401956, user_data = 0x314bee50}, {pos 
= 827059792, events = 0, fd = 827059992, user_data = 0x1}, {pos = 827060816, 
events = 0, fd = 11733408, user_data = 0xffffd1195ad0}, {pos = -1369445388, 
events = 65535, fd = 0,
            user_data = 0x0}, {pos = 0, events = 0, fd = 10, user_data = 
0xd6d000 <PqRecvBuffer+7072>}, {pos = 827059792, events = 0, fd = 14136736, 
user_data = 0xffffae0fae38}, {pos = 135, events = 0, fd = -40, user_data = 
0xffffd1195a70}, {pos = -1377343468, events = 65535, fd = -1376250456, 
user_data = 0xffffadf81590 <dealloc_buffers>}, {
            pos = 1, events = 0, fd = -1369378800, user_data = 0x1}, {pos = 0, 
events = 0, fd = 10, user_data = 0xffffade75100 <flush_cleanup>}, {pos = 
-1376246672, events = 65535, fd = 0, user_data = 0x0}, {pos = -1559009792, 
events = 2576574568, fd = -786867504, user_data = 0x99936868a3136600}, {pos = 
-786867504, events = 65535,
            fd = 8147532, user_data = 0x0}, {pos = -1559009792, events = 
2576574568, fd = -786867504, user_data = 0x7c529c <fork_process+124>}, {pos = 
9963, events = 0, fd = 0, user_data = 0x0}, {pos = 11, events = 0, fd = 
-786867328, user_data = 0x7c542c <postmaster_child_launch+60>}, {pos = 0, 
events = 0, fd = 0, user_data = 0x400}, {
            pos = 826861016, events = 0, fd = 4194304, user_data = 0x9ebb9c 
<MemoryContextDelete+168>}, {pos = 826882960, events = 0, fd = 826860816, 
user_data = 0xd7b5a0 <TopMemoryContext>}, {pos = 826860816, events = 0, fd = 
14135296, user_data = 0xd6d930 <NumListenSockets>}, {pos = -786867344, events = 
65535, fd = 7280632,
            user_data = 0xffffd1195bd0}, {pos = 8170340, events = 0, fd = 
14131200, user_data = 0x8}, {pos = 8, events = 0, fd = 14131200, user_data = 
0xd6d000 <PqRecvBuffer+7072>}, {pos = 14080304, events = 0, fd = 826860128, 
user_data = 0xa44730}, {pos = 11599472, events = 0, fd = 14131200, user_data = 
0xffffd1195bd0}, {pos = 0, events = 0,
            fd = 0, user_data = 0x31494570}}
        nevents = <optimized out>
        __func__ = "ServerLoop"
#23 0x00000000007cab68 in PostmasterMain (argc=argc@entry=8, 
argv=argv@entry=0x3148f320) at postmaster.c:1372
        opt = <optimized out>
        status = <optimized out>
        userDoption = <optimized out>
        listen_addr_saved = false
        output_config_variable = <optimized out>
        __func__ = "PostmasterMain"
#24 0x0000000000496cb8 in main (argc=8, argv=0x3148f320) at main.c:197
        do_check_root = <optimized out>
(gdb)
[postgres@ip-172-31-18-25 ~]$ pstack 8098
#0  0x0000ffff8a9c9954 in epoll_pwait () from /lib64/libc.so.6
#1  0x000000000081aa40 in WaitEventSetWaitBlock (nevents=1, 
occurred_events=<optimized out>, cur_timeout=600000, set=0x108d59b8) at 
latch.c:1535
#2  WaitEventSetWait (set=0x108d59b8, timeout=timeout@entry=600000, 
occurred_events=occurred_events@entry=0xfffff9c83678, nevents=nevents@entry=1, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:1481
#3  0x000000000081ae04 in WaitLatch (latch=<optimized out>, 
wakeEvents=wakeEvents@entry=41, timeout=600000, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:513
#4  0x00000000008dd9b4 in pg_sleep (fcinfo=<optimized out>) at misc.c:406
#5  0x000000000067f5dc in ExecInterpExpr (state=0x10ad7ae8, 
econtext=0x10ad7810, isnull=<optimized out>) at execExprInterp.c:758
#6  0x00000000006b7808 in ExecEvalExprSwitchContext (isNull=0xfffff9c837ef, 
econtext=0x10ad7810, state=<optimized out>) at 
../../../src/include/executor/executor.h:355
#7  ExecProject (projInfo=<optimized out>) at 
../../../src/include/executor/executor.h:389
#8  ExecResult (pstate=<optimized out>) at nodeResult.c:136
#9  0x00000000006833cc in ExecProcNode (node=0x10ad7700) at 
../../../src/include/executor/executor.h:273
#10 ExecutePlan (execute_once=<optimized out>, dest=0x109f2a50, 
direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, 
operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x10ad7700, 
estate=0x10ad74d8) at execMain.c:1670
#11 standard_ExecutorRun (queryDesc=0x10adb4f8, direction=<optimized out>, 
count=0, execute_once=<optimized out>) at execMain.c:365
#12 0x0000000000847b44 in PortalRunSelect (portal=portal@entry=0x10952f48, 
forward=forward@entry=true, count=0, count@entry=9223372036854775807, 
dest=dest@entry=0x109f2a50) at pquery.c:924
#13 0x0000000000849360 in PortalRun (portal=portal@entry=0x10952f48, 
count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=true, 
run_once=run_once@entry=true, dest=dest@entry=0x109f2a50, 
altdest=altdest@entry=0x109f2a50, qc=qc@entry=0xfffff9c83b30) at pquery.c:768
#14 0x0000000000845044 in exec_simple_query 
(query_string=query_string@entry=0x108d9c88 "SELECT pg_sleep(0.1);") at 
postgres.c:1274
#15 0x0000000000845b68 in PostgresMain (dbname=<optimized out>, 
username=<optimized out>) at postgres.c:4637
#16 0x00000000007ab284 in BackendRun (port=0x109050b0) at postmaster.c:4464
#17 BackendStartup (port=0x109050b0) at postmaster.c:4192
#18 ServerLoop () at postmaster.c:1782
#19 0x00000000007ac3a4 in PostmasterMain (argc=argc@entry=8, 
argv=argv@entry=0x108d5310) at postmaster.c:1466
#20 0x0000000000493260 in main (argc=8, argv=0x108d5310) at main.c:198
[postgres@ip-172-31-18-25 ~]$



31292 root       20   0  117M  4320  3136 S  0.0  0.0  0:00.00 │  ├─ 
/usr/sbin/CROND -n
31298 postgres   20   0 20988  6312  5320 S  0.0  0.0  0:00.00 │  │  ├─ 
/usr/sbin/sendmail -FCronDaemon -i -odi -oem -oi -t -f postgres
31307 postgres   20   0 20960  6144  5152 S  0.0  0.0  0:00.00 │  │  │  
└─ /usr/sbin/postdrop -r
31293 postgres   20   0  111M  2616  2440 S  0.0  0.0  0:00.00 │  │  └─ 
/bin/sh -c cd /opt/postgres/build-farm-14 && 
PATH=/opt/gcc/home/ec2-user/proj/gcc/target/bin/:$PATH:/usr/local/bin 
PERL5LIB=/home/postgres/perl5/lib/perl5 ./run_build.pl --config=build-farm.conf 
REL_16_STABLE --verbose
31295 postgres   20   0  128M 17988  3928 S  0.0  0.1  0:00.08 │  │     
└─ /usr/bin/perl ./run_build.pl --config=build-farm.conf REL_16_STABLE 
--verbose
 5657 postgres   20   0  111M  2628  2448 S  0.0  0.0  0:00.00 │  │        
└─ sh -c { cd pgsql.build/src/test/regress && make NO_LOCALE=1 check; echo 
$? > 
/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/parula.lastrun-logs/laststatus;
 } > 
/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/parula.lastrun-logs/lastcommand.log
 2>&1; read st <
 5658 postgres   20   0  110M  2084  1712 S  0.0  0.0  0:00.00 │  │         
  └─ make NO_LOCALE=1 check
 6834 postgres   20   0  111M  2676  2480 S  0.0  0.0  0:00.00 │  │         
     └─ /bin/sh -c echo "# +++ regress check in src/test/regress +++" && 
PATH="/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/pgsql.build/tmp_install/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/inst/bin:/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/pgsq
 6835 postgres   20   0  110M  1960  1800 S  0.0  0.0  0:00.03 │  │         
        └─ ../../../src/test/regress/pg_regress --temp-instance=./tmp_check 
--inputdir=. --bindir= --temp-config=/tmp/buildfarm-w4K7O0/bfextra.conf 
--no-locale --port=5768 --dlpath=. --max-concurrent-tests=20 --port=5768 
--schedule=./parallel_schedule
 8090 postgres   20   0 15448  5536  4708 S  0.0  0.0  0:00.00 │  │         
           ├─ psql -X -a -q -d regression -v HIDE_TABLEAM=on -v 
HIDE_TOAST_COMPRESSION=on
 6849 postgres   20   0  166M 20544 19404 S  0.0  0.1  0:00.33 │  │         
           └─ postgres -D 
/opt/postgres/build-farm-14/buildroot/REL_16_STABLE/pgsql.build/src/test/regress/tmp_check/data
 -F -c listen_addresses= -k /tmp/pg_regress-Frl3F3
 8098 postgres   20   0  171M 41404 37216 S  0.0  0.3  0:00.05 │  │         
              ├─ postgres: postgres regression [local] SELECT
 6857 postgres   20   0  169M  8752  7344 S  0.0  0.1  0:00.01 │  │         
              ├─ postgres: logical replication launcher
 6856 postgres   20   0  168M  8484  7032 S  0.0  0.1  0:00.08 │  │         
              ├─ postgres: autovacuum launcher
 6855 postgres   20   0  166M 10040  8868 S  0.0  0.1  0:00.06 │  │         
              ├─ postgres: walwriter
 6853 postgres   20   0  166M  5400  4244 S  0.0  0.0  0:00.02 │  │         
              ├─ postgres: background writer
 6852 postgres   20   0  168M  111M  109M S  0.0  0.7  0:00.12 │  │         
              └─ postgres: checkpointer
 
 
#0  0x0000ffff8a9c9954 in epoll_pwait () from /lib64/libc.so.6
No symbol table info available.
#1  0x000000000081aa40 in WaitEventSetWaitBlock (nevents=1, 
occurred_events=<optimized out>, cur_timeout=335257, set=0x108d59b8) at 
latch.c:1535
        returned_events = 0
        rc = <optimized out>
        cur_event = <optimized out>
        cur_epoll_event = <optimized out>
        __func__ = "WaitEventSetWaitBlock"
#2  WaitEventSetWait (set=0x108d59b8, timeout=timeout@entry=600000, 
occurred_events=occurred_events@entry=0xfffff9c83678, nevents=nevents@entry=1, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:1481
        rc = <optimized out>
        returned_events = 0
        start_time = <optimized out>
        cur_time = <optimized out>
        cur_timeout = 335257
#3  0x000000000081ae04 in WaitLatch (latch=<optimized out>, 
wakeEvents=wakeEvents@entry=41, timeout=600000, 
wait_event_info=wait_event_info@entry=150994946) at latch.c:513
        event = {pos = 9296220, events = 0, fd = 1713147409, user_data = 
0xbc95e}
#4  0x00000000008dd9b4 in pg_sleep (fcinfo=<optimized out>) at misc.c:406
        delay = <optimized out>
        delay_ms = <optimized out>
        endtime = 0
#5  0x000000000067f5dc in ExecInterpExpr (state=0x10ad7ae8, 
econtext=0x10ad7810, isnull=<optimized out>) at execExprInterp.c:758
        fcinfo = 0x10ad7bc0
        args = 0x10ad7be0
        nargs = <optimized out>
        d = <optimized out>
        op = <optimized out>
        resultslot = 0x10ad7a00
        innerslot = 0x0
        outerslot = 0x0
        scanslot = 0x0
        dispatch_table = {0x67e6f0 <ExecInterpExpr+1840>, 0x67e104 
<ExecInterpExpr+324>, 0x67e938 <ExecInterpExpr+2424>, 0x67e914 
<ExecInterpExpr+2388>, 0x67e8d8 <ExecInterpExpr+2328>, 0x67e89c 
<ExecInterpExpr+2268>, 0x67e860 <ExecInterpExpr+2208>, 0x67e844 
<ExecInterpExpr+2180>, 0x67e828 <ExecInterpExpr+2152>, 0x67e80c 
<ExecInterpExpr+2124>,
          0x67eb1c <ExecInterpExpr+2908>, 0x67eacc <ExecInterpExpr+2828>, 
0x67ea7c <ExecInterpExpr+2748>, 0x67ea2c <ExecInterpExpr+2668>, 0x67e9f4 
<ExecInterpExpr+2612>, 0x67e9ac <ExecInterpExpr+2540>, 0x67e98c 
<ExecInterpExpr+2508>, 0x67e95c <ExecInterpExpr+2460>, 0x67e7c8 
<ExecInterpExpr+2056>, 0x67e77c <ExecInterpExpr+1980>,
          0x67e764 <ExecInterpExpr+1956>, 0x67e004 <ExecInterpExpr+68>, 
0x67e00c <ExecInterpExpr+76>, 0x67efcc <ExecInterpExpr+4108>, 0x67e02c 
<ExecInterpExpr+108>, 0x67e034 <ExecInterpExpr+116>, 0x67f010 
<ExecInterpExpr+4176>, 0x67efb0 <ExecInterpExpr+4080>, 0x67ef6c 
<ExecInterpExpr+4012>, 0x67ef54 <ExecInterpExpr+3988>,
          0x67ef30 <ExecInterpExpr+3952>, 0x67ef0c <ExecInterpExpr+3916>, 
0x67eed4 <ExecInterpExpr+3860>, 0x67eeb8 <ExecInterpExpr+3832>, 0x67ee98 
<ExecInterpExpr+3800>, 0x67ee84 <ExecInterpExpr+3780>, 0x67ee70 
<ExecInterpExpr+3760>, 0x67ee4c <ExecInterpExpr+3724>, 0x67ee24 
<ExecInterpExpr+3684>, 0x67ee00 <ExecInterpExpr+3648>,
          0x67edd8 <ExecInterpExpr+3608>, 0x67edc0 <ExecInterpExpr+3584>, 
0x67eda8 <ExecInterpExpr+3560>, 0x67ed8c <ExecInterpExpr+3532>, 0x67ed60 
<ExecInterpExpr+3488>, 0x67ed18 <ExecInterpExpr+3416>, 0x67ec6c 
<ExecInterpExpr+3244>, 0x67ec40 <ExecInterpExpr+3200>, 0x67ec10 
<ExecInterpExpr+3152>, 0x67eba8 <ExecInterpExpr+3048>,
          0x67eb94 <ExecInterpExpr+3028>, 0x67fb08 <ExecInterpExpr+6984>, 
0x67eb80 <ExecInterpExpr+3008>, 0x67eb6c <ExecInterpExpr+2988>, 0x67eb34 
<ExecInterpExpr+2932>, 0x67f33c <ExecInterpExpr+4988>, 0x67f2b8 
<ExecInterpExpr+4856>, 0x67f274 <ExecInterpExpr+4788>, 0x67f260 
<ExecInterpExpr+4768>, 0x67f248 <ExecInterpExpr+4744>,
          0x67f230 <ExecInterpExpr+4720>, 0x67f218 <ExecInterpExpr+4696>, 
0x67f1f8 <ExecInterpExpr+4664>, 0x67f0fc <ExecInterpExpr+4412>, 0x67f0e0 
<ExecInterpExpr+4384>, 0x67f0c4 <ExecInterpExpr+4356>, 0x67ed34 
<ExecInterpExpr+3444>, 0x67f06c <ExecInterpExpr+4268>, 0x67f04c 
<ExecInterpExpr+4236>, 0x67f0ac <ExecInterpExpr+4332>,
          0x67f098 <ExecInterpExpr+4312>, 0x67f080 <ExecInterpExpr+4288>, 
0x67f1e4 <ExecInterpExpr+4644>, 0x67f1cc <ExecInterpExpr+4620>, 0x67f1b8 
<ExecInterpExpr+4600>, 0x67f188 <ExecInterpExpr+4552>, 0x67f174 
<ExecInterpExpr+4532>, 0x67f13c <ExecInterpExpr+4476>, 0x67f118 
<ExecInterpExpr+4440>, 0x67e054 <ExecInterpExpr+148>,
          0x67e060 <ExecInterpExpr+160>, 0x67e71c <ExecInterpExpr+1884>, 
0x67e6ac <ExecInterpExpr+1772>, 0x67e680 <ExecInterpExpr+1728>, 0x67e5c0 
<ExecInterpExpr+1536>, 0x67e508 <ExecInterpExpr+1352>, 0x67e358 
<ExecInterpExpr+920>, 0x67e408 <ExecInterpExpr+1096>, 0x67e264 
<ExecInterpExpr+676>, 0x67e178 <ExecInterpExpr+440>,
          0x67e150 <ExecInterpExpr+400>, 0x67e128 <ExecInterpExpr+360>, 
0x67e0dc <ExecInterpExpr+284>, 0x67e0c4 <ExecInterpExpr+260>, 0x67f89c 
<ExecInterpExpr+6364>}
#6  0x00000000006b7808 in ExecEvalExprSwitchContext (isNull=0xfffff9c837ef, 
econtext=0x10ad7810, state=<optimized out>) at 
../../../src/include/executor/executor.h:355
        oldContext = 0x10ad73c0
#7  ExecProject (projInfo=<optimized out>) at 
../../../src/include/executor/executor.h:389
        econtext = 0x10ad7810
        state = <optimized out>
        slot = 0x10ad7a00
        isnull = 33
#8  ExecResult (pstate=<optimized out>) at nodeResult.c:136
        node = <optimized out>
        outerTupleSlot = <optimized out>
        outerPlan = <optimized out>
        econtext = <optimized out>
#9  0x00000000006833cc in ExecProcNode (node=0x10ad7700) at 
../../../src/include/executor/executor.h:273
No locals.
#10 ExecutePlan (execute_once=<optimized out>, dest=0x109f2a50, 
direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, 
operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x10ad7700, 
estate=0x10ad74d8) at execMain.c:1670
        slot = <optimized out>
        current_tuple_count = 0
#11 standard_ExecutorRun (queryDesc=0x10adb4f8, direction=<optimized out>, 
count=0, execute_once=<optimized out>) at execMain.c:365
        estate = 0x10ad74d8
        operation = CMD_SELECT
        dest = 0x109f2a50
        sendTuples = 252
        oldcontext = 0x10adb3e0
        __func__ = "standard_ExecutorRun"
#12 0x0000000000847b44 in PortalRunSelect (portal=portal@entry=0x10952f48, 
forward=forward@entry=true, count=0, count@entry=9223372036854775807, 
dest=dest@entry=0x109f2a50) at pquery.c:924
        queryDesc = 0x10adb4f8
        direction = <optimized out>
        nprocessed = <optimized out>
        __func__ = "PortalRunSelect"
#13 0x0000000000849360 in PortalRun (portal=portal@entry=0x10952f48, 
count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=true, 
run_once=run_once@entry=true, dest=dest@entry=0x109f2a50, 
altdest=altdest@entry=0x109f2a50, qc=qc@entry=0xfffff9c83b30) at pquery.c:768
        _save_exception_stack = 0xfffff9c83de8
        _save_context_stack = 0x0
        _local_sigjmp_buf = {{__jmpbuf = {1, 278212424, 277719512, 277719560, 
0, 278866512, 0, 2, 13605592, 277719592, 281474872391856, 2455851481445542082, 
277697712, 2455605387221598826, 4631952216750555136, 0, 0, 0, 0, 0, 0, 0}, 
__mask_was_saved = 0, __saved_mask = {__val = {112, 277715824, 277719512, 
13602816, 281474872392256, 8686156,
                281474872392288, 4874408, 2, 278212424, 277719512, 277719560, 
281474872392320, 8671248, 277719584, 8671184}}}}
        result = <optimized out>
        nprocessed = <optimized out>
        saveTopTransactionResourceOwner = 0x109673a8
        saveTopTransactionContext = 0x1090cd40
        saveActivePortal = 0x0
        saveResourceOwner = 0x109673a8
        savePortalContext = 0x0
        saveMemoryContext = 0x1090cd40
        __func__ = "PortalRun"
#14 0x0000000000845044 in exec_simple_query 
(query_string=query_string@entry=0x108d9c88 "SELECT pg_sleep(0.1);") at 
postgres.c:1274
        cmdtaglen = 6
        snapshot_set = <optimized out>
        per_parsetree_context = 0x0
        plantree_list = 0x109f2a00
        parsetree = <error reading variable parsetree 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        commandTag = <optimized out>
        qc = {commandTag = CMDTAG_UNKNOWN, nprocessed = 0}
        querytree_list = <error reading variable querytree_list 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        portal = 0x10952f48
        receiver = 0x109f2a50
        format = 0
        cmdtagname = <error reading variable cmdtagname 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        parsetree_item__state = {l = 0x108daa08, i = 0}
        dest = DestRemote
        oldcontext = 0x1090cd40
        parsetree_list = 0x108daa08
        parsetree_item = 0x108daa20
        save_log_statement_stats = <optimized out>
        was_logged = true
        use_implicit_block = false
        msec_str = 
"\000\000\000\000\377\377\000\000\000\000\000\000\000\000\000\000X\002\317\000\000\000\000\000Q\000\000\000\000\000\000"
        __func__ = "exec_simple_query"
#15 0x0000000000845b68 in PostgresMain (dbname=<optimized out>, 
username=<optimized out>) at postgres.c:4637
        query_string = <error reading variable query_string 
(dwarf2_find_location_expression: Corrupted DWARF expression.)>
        firstchar = <optimized out>
        input_message = {data = 0x108d9c88 "SELECT pg_sleep(0.1);", len = 22, 
maxlen = 1024, cursor = 22}
        local_sigjmp_buf = {{__jmpbuf = {13602816, 13602816, 8662912, 
281474872393704, 277894208, 281474872394760, 277888464, 13455360, 0, 13551280, 
281474872392544, 2455851481445527378, 15624, 2455605387221598602, 
4631952216750555136, 0, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 1, __saved_mask = 
{__val = {4194304, 7834284, 281474872393440,
                8561608, 13562696, 13598720, 13602816, 8625692, 
281474872393504, 8041068, 281474872393648, 277893296, 11145024, 
281474872393704, 277894208, 277893296}}}}
        send_ready_for_query = false
        idle_in_transaction_timeout_enabled = false
        idle_session_timeout_enabled = false
        __func__ = "PostgresMain"
#16 0x00000000007ab284 in BackendRun (port=0x109050b0) at postmaster.c:4464
No locals.
#17 BackendStartup (port=0x109050b0) at postmaster.c:4192
        bn = 0x10905440
        pid = <optimized out>
        __func__ = "BackendStartup"
#18 ServerLoop () at postmaster.c:1782
        port = 0x109050b0
        i = <optimized out>
        now = <optimized out>
        last_lockfile_recheck_time = 1713135987
        last_touch_time = 1713135987
        events = {{pos = 1, events = 2, fd = 7, user_data = 0x0}, {pos = 32816, 
events = 0, fd = -104315824, user_data = 0xffff8a9945a8 <__alloc_dir+72>}, {pos 
= 32768, events = 0, fd = 8, user_data = 0x1}, {pos = 10502040, events = 0, fd 
= -104315824, user_data = 0x400}, {pos = -104315632, events = 65535, fd = 
-1969666388,
            user_data = 0xffff8aa6d000 <argp_default_argp+16>}, {pos = 8, 
events = 0, fd = -104315768, user_data = 0x0}, {pos = -104315520, events = 
65535, fd = 66305, user_data = 0x1a81d3c4}, {pos = 16832, events = 2, fd = 
1001, user_data = 0x0}, {pos = 0, events = 0, fd = 6, user_data = 0x1000}, {pos 
= 0, events = 0, fd = -104315504,
            user_data = 0xffff8a96ba0c <malloc+156>}, {pos = -104315488, events 
= 65535, fd = -1969833460, user_data = 0xffff8aa6ea88 <main_arena>}, {pos = 
4096, events = 0, fd = -1961892016, user_data = 0xffff8b0fe700}, {pos = 80, 
events = 0, fd = 277883320, user_data = 0x0}, {pos = 1, events = 0, fd = 0, 
user_data = 0xadaa98}, {
            pos = -1970278784, events = 65535, fd = 1867, user_data = 0x1}, 
{pos = -1970333812, events = 65535, fd = -1961839552, user_data = 0x0}, {pos = 
119, events = 124, fd = 1, user_data = 0x630000006f}, {pos = 0, events = 0, fd 
= -104315408, user_data = 0xffff8b0e2cbc <do_lookup_x+556>}, {pos = 
-1967215448, events = 65535, fd = 173,
            user_data = 0x1}, {pos = -1967223912, events = 65535, fd = 
-1961797040, user_data = 0x5}, {pos = -1961797040, events = 65535, fd = 
-104315208, user_data = 0xfffff9c846b4}, {pos = 66305, events = 0, fd = 
-104315168, user_data = 0xffff8b0e3644 <_dl_lookup_symbol_x+260>}, {pos = 
2090263927, events = 0, fd = -1961773784,
            user_data = 0x4540dd}, {pos = -104314824, events = 65535, fd = 
-1961874848, user_data = 0x1}, {pos = -1961774688, events = 65535, fd = 1, 
user_data = 0xfffff9c84780}, {pos = 0, events = 0, fd = 32, user_data = 0x0}, 
{pos = 6, events = 0, fd = -1961875160, user_data = 0xffff00000000}, {pos = 
-104315008, events = 65535,
            fd = -104314992, user_data = 0x43e740}, {pos = 4538589, events = 0, 
fd = -104315208, user_data = 0xfffff9c846b4}, {pos = 32660373, events = 0, fd = 
-104315168, user_data = 0x0}, {pos = 1, events = 0, fd = 0, user_data = 0x1}, 
{pos = -1961774688, events = 65535, fd = -104314896, user_data = 0xffff8b0e7820 
<_dl_fixup+192>}, {pos = 0,
            events = 0, fd = 13437312, user_data = 0xffff8b0fdf00}, {pos = 
-1961892096, events = 65535, fd = 13549568, user_data = 0xcec6b0 
<ListenSocket>}, {pos = 277693024, events = 0, fd = 10528136, user_data = 
0xacaed8}, {pos = 11381400, events = 0, fd = -104314944, user_data = 0x9b00b8 
<AllocSetReset+40>}, {pos = 277882224, events = 0,
            fd = 1343407616, user_data = 0xfffff9c847c0}, {pos = 0, events = 0, 
fd = -1961773784, user_data = 0xfffff9c84790}, {pos = 448139, events = 0, fd = 
1024, user_data = 0xffff8abe9e38}, {pos = -1961797040, events = 65535, fd = 
277883321, user_data = 0x108d9b70}, {pos = 0, events = 0, fd = 5120, user_data 
= 0xfffff9c847f0}, {
            pos = 10185012, events = 0, fd = 277882224, user_data = 
0x10902570}, {pos = 277882224, events = 0, fd = 277883248, user_data = 
0xfffff9c84920}, {pos = -1961960460, events = 65535, fd = 3, user_data = 0x8}, 
{pos = 8, events = 0, fd = 13602816, user_data = 0xcec000 <PqRecvBuffer+7712>}, 
{pos = 277693024, events = 0, fd = 277882224,
            user_data = 0xffff8abe9e38}, {pos = 135, events = 0, fd = -40, 
user_data = 0xfffff9c848c0}, {pos = -1969858540, events = 65535, fd = 
-1968765528, user_data = 0xffff8aa70590 <dealloc_buffers>}, {pos = 1, events = 
0, fd = -1961893872, user_data = 0x1}, {pos = 0, events = 0, fd = 1635021578,
            user_data = 0xffff8a964100 <flush_cleanup>}, {pos = -1968761744, 
events = 65535, fd = 0, user_data = 0x0}, {pos = 1343407616, events = 
3428591778, fd = -104314592, user_data = 0xcc5c28a25012c600}, {pos = 
-104314592, events = 65535, fd = 8019644, user_data = 0x0}, {pos = 1343407616, 
events = 3428591778, fd = -104314592,
            user_data = 0x7a5f0c <fork_process+124>}, {pos = 6854, events = 0, 
fd = 8, user_data = 0x8}, {pos = 13602816, events = 0, fd = -104314416, 
user_data = 0x7a8d64 <StartChildProcess+20>}, {pos = 0, events = 0, fd = 8, 
user_data = 0x108d4510}, {pos = 1024, events = 0, fd = 4194304, user_data = 
0x6d8e78 <load_ident+388>}, {
            pos = 13541376, events = 0, fd = 0, user_data = 0xfffff9c849f0}, 
{pos = 8045472, events = 0, fd = 13602816, user_data = 0x8}, {pos = 8, events = 
0, fd = 13602816, user_data = 0xcec000 <PqRecvBuffer+7712>}, {pos = 13551280, 
events = 0, fd = 277693024, user_data = 0xa0a588}, {pos = 11316952, events = 0, 
fd = 8,
            user_data = 0xfffff9c849f0}, {pos = 0, events = 0, fd = 0, 
user_data = 0x10904010}}
        nevents = <optimized out>
        __func__ = "ServerLoop"
#19 0x00000000007ac3a4 in PostmasterMain (argc=argc@entry=8, 
argv=argv@entry=0x108d5310) at postmaster.c:1466
        opt = <optimized out>
        status = <optimized out>
        userDoption = <optimized out>
        listen_addr_saved = false
        i = <optimized out>
        output_config_variable = <optimized out>
        __func__ = "PostmasterMain"
#20 0x0000000000493260 in main (argc=8, argv=0x108d5310) at main.c:198
        do_check_root = <optimized out>
(gdb)

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