Re: [patch] Support LLVM 7

Re: To Andres Freund 2018-09-20 <20180920081044(dot)GA16897(at)msg(dot)df7cb(dot)de>
> > > 2018-09-15 10:49:25.052 UTC [26458] DETAIL: Failed process was running: SELECT '' AS tf_12, BOOLTBL1.*, BOOLTBL2.*
> > > FROM BOOLTBL1, BOOLTBL2
> > > WHERE BOOLTBL2.f1 <> BOOLTBL1.f1;
> > > 2018-09-15 10:49:25.052 UTC [26458] LOG: terminating any other active server processes
> >
> > Hm. Is there any chance to get a backtrace for this one? This could,
> > although I think less likely so, also be a postgres issue
> > (e.g. generating code for the wrong microarch).
>
> I'll see if I can find a porterbox to get a backtrace.

32-bit powerpc, 11~beta3-2:

postgres=# set jit = off;
SET
postgres=# SELECT
postgres-# ARRAY(SELECT f.i FROM (
postgres(# (SELECT d + g.i FROM generate_series(4, 30, 3) d ORDER BY 1)
postgres(# UNION ALL
postgres(# (SELECT d + g.i FROM generate_series(0, 30, 5) d ORDER BY 1)
postgres(# ) f(i)
postgres(# ORDER BY f.i LIMIT 10)
postgres-# FROM generate_series(1, 3) g(i);
array
------------------------------
{1,5,6,8,11,11,14,16,17,20}
{2,6,7,9,12,12,15,17,18,21}
{3,7,8,10,13,13,16,18,19,22}
(3 Zeilen)

postgres=# set jit = on;
SET
postgres=# SELECT ARRAY(SELECT f.i FROM ( (SELECT d + g.i FROM generate_series(4, 30, 3) d ORDER BY 1) UNION ALL (SELECT d + g.i FROM generate_series(0, 30, 5) d ORDER BY 1) ) f(i) ORDER BY f.i LIMIT 10) FROM generate_series(1, 3) g(i);

Program received signal SIGSEGV, Segmentation fault.
0xf4a20c18 in ?? ()
(gdb) bt f
#0 0xf4a20c18 in ?? ()
No symbol table info available.
#1 0xf4a20bc8 in ?? ()
No symbol table info available.
#2 0xf4a41b90 in ExecRunCompiledExpr (state=0x1a7515c, econtext=0x1a73dd0, isNull=0xffe17c2b)
at ./build/../src/backend/jit/llvm/llvmjit_expr.c:2591
cstate = <optimized out>
func = 0xf4a20b5c
#3 0x00c2d39c in ExecEvalExprSwitchContext (isNull=0xffe17c2b, econtext=<optimized out>, state=0x1a7515c)
at ./build/../src/include/executor/executor.h:303
retDatum = <optimized out>
oldContext = 0x19fe830
retDatum = <optimized out>
oldContext = <optimized out>
#4 ExecProject (projInfo=0x1a75158) at ./build/../src/include/executor/executor.h:337
econtext = <optimized out>
state = 0x1a7515c
slot = 0x1a750c0
isnull = 252
econtext = <optimized out>
state = <optimized out>
slot = <optimized out>
isnull = <optimized out>
#5 ExecScan (node=<optimized out>, accessMtd=accessMtd(at)entry=0xc3ce50 <FunctionNext>,
recheckMtd=recheckMtd(at)entry=0xc3cdf0 <FunctionRecheck>) at ./build/../src/backend/executor/execScan.c:201
slot = <optimized out>
econtext = <optimized out>
qual = 0x0
projInfo = 0x1a75158
#6 0x00c3ce3c in ExecFunctionScan (pstate=<optimized out>) at ./build/../src/backend/executor/nodeFunctionscan.c:270
node = <optimized out>
#7 0x00c2b280 in ExecProcNodeFirst (node=0x1a73d48) at ./build/../src/backend/executor/execProcnode.c:445
No locals.
#8 0x00c23058 in ExecProcNode (node=0x1a73d48) at ./build/../src/include/executor/executor.h:237
No locals.
#9 ExecutePlan (execute_once=<optimized out>, dest=0x1a1c218, direction=<optimized out>, numberTuples=<optimized out>,
sendTuples=<optimized out>, operation=CMD_SELECT, use_parallel_mode=<optimized out>, planstate=0x1a73d48, estate=0x19fe8c0)
at ./build/../src/backend/executor/execMain.c:1721
slot = <optimized out>
current_tuple_count = 0
slot = <optimized out>
current_tuple_count = <optimized out>
#10 standard_ExecutorRun (queryDesc=0x1962250, direction=<optimized out>, count=<optimized out>, execute_once=<optimized out>)
at ./build/../src/backend/executor/execMain.c:362
estate = 0x19fe8c0
operation = CMD_SELECT
dest = 0x1a1c218
sendTuples = <optimized out>
oldcontext = 0x19621c0
__func__ = "standard_ExecutorRun"
#11 0x00c23284 in ExecutorRun (queryDesc=queryDesc(at)entry=0x1962250, direction=direction(at)entry=ForwardScanDirection,
count=<optimized out>, execute_once=<optimized out>) at ./build/../src/backend/executor/execMain.c:305
No locals.
#12 0x00dcd3a0 in PortalRunSelect (portal=portal(at)entry=0x198d290, forward=forward(at)entry=true, count=0, count(at)entry=2147483647,
dest=dest(at)entry=0x1a1c218) at ./build/../src/backend/tcop/pquery.c:932
queryDesc = 0x1962250
direction = <optimized out>
nprocessed = <optimized out>
__func__ = "PortalRunSelect"
#13 0x00dcee7c in PortalRun (portal=portal(at)entry=0x198d290, count=count(at)entry=2147483647, isTopLevel=isTopLevel(at)entry=true,
run_once=run_once(at)entry=true, dest=dest(at)entry=0x1a1c218, altdest=altdest(at)entry=0x1a1c218,
completionTag=completionTag(at)entry=0xffe1800c ".\363W\223\307g0@") at ./build/../src/backend/tcop/pquery.c:773
save_exception_stack = 0xffe18160
save_context_stack = 0x0
local_sigjmp_buf = {{__jmpbuf = {-32516271, -1998838, 20072133, 0, 0, -1998838, 26945520, 27378200, 19171432, 19171820,
2147483647, -1998836, 26483320, -1998836, 26792592, 2, 19171840, 26476288, 26792592, 19144432, 19171844, 671228962,
0 <repeats 36 times>, -1, 27369928, 0, 0, -1, 0 <repeats 49 times>}, __mask_was_saved = 0, __saved_mask = {__val = {
15993932, 19161904, 671228488, 4292968320, 26456480, 19162012, 26800800, 4292968336, 15993932, 4292968460, 671228488,
26476288, 26476144, 19164812, 26800800, 4292968368, 16146884, 19164812, 26483320, 4292968384, 16145016, 2, 0, 17767752,
26483304, 19087032, 2, 4292968400, 10863184, 19144432, 2, 4292968432}}}}
result = <optimized out>
nprocessed = <optimized out>
saveTopTransactionResourceOwner = 0x1968a40
saveTopTransactionContext = 0x19b27f0
saveActivePortal = 0x0
saveResourceOwner = 0x1968a40
savePortalContext = 0x0
saveMemoryContext = 0x19b27f0
__func__ = "PortalRun"
#14 0x00dca4ec in exec_simple_query (
query_string=0x193ff00 "SELECT\n", ' ' <repeats 12 times>, "ARRAY(SELECT f.i FROM (\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(4, 30, 3) d ORDER BY 1)\n", ' ' <repeats 16 times>, "UNION ALL\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(0"...) at ./build/../src/backend/tcop/postgres.c:1122
parsetree = 0x1941a50
portal = 0x198d290
snapshot_set = <optimized out>
commandTag = <optimized out>
completionTag = "(dot)\363W\223\307g0(at)\000\307sl\000\000\000\002\000\000\000\000\000\000\000\002\000\000\000\001\001$\211\374\001\226n8\377\341\201\060\001\223\377\000\001$fh\000\000\001>\377\341\200`\000\364\264$\001$\211", <incomplete sequence \374>
querytree_list = <optimized out>
plantree_list = <optimized out>
receiver = 0x1a1c218
format = 61
dest = DestRemote
oldcontext = 0x19b27f0
parsetree_list = 0x1941a78
parsetree_item = 0x1941a68
save_log_statement_stats = <optimized out>
was_logged = false
use_implicit_block = <optimized out>
msec_str = "(dot)\363W\223\307g0(at)\000\307sl\000\000\000\002\000\000\000\000\000\000\000\002\000\000\000\001\001$\211", <incomplete sequence \374>
__func__ = "exec_simple_query"
#15 0x00dcbfcc in PostgresMain (argc=<optimized out>, argv=argv(at)entry=0x1966e38, dbname=<optimized out>, username=<optimized out>)
at ./build/../src/backend/tcop/postgres.c:4153
query_string = 0x193ff00 "SELECT\n", ' ' <repeats 12 times>, "ARRAY(SELECT f.i FROM (\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(4, 30, 3) d ORDER BY 1)\n", ' ' <repeats 16 times>, "UNION ALL\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(0"...
firstchar = 81
input_message = {
data = 0x193ff00 "SELECT\n", ' ' <repeats 12 times>, "ARRAY(SELECT f.i FROM (\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(4, 30, 3) d ORDER BY 1)\n", ' ' <repeats 16 times>, "UNION ALL\n", ' ' <repeats 16 times>, "(SELECT d + g.i FROM generate_series(0"..., len = 318, maxlen = 1024, cursor = 318}
local_sigjmp_buf = {{__jmpbuf = {-32560447, 14233748, 20054449, 26609600, 19171644, 19545576, -1997596, 19545448, -1997608,
1537449090, 5, 1537449152, 0, 19171028, 1, 19171836, 26635832, 26635632, 19171840, 19143524, 19171836, 671097412,
0 <repeats 40 times>, -1, 0 <repeats 49 times>}, __mask_was_saved = 1, __saved_mask = {__val = {0, 0, 4, 4292971016, 15,
0, 4292971016, 4292969328, 0, 0, 4294967295, 0, 0, 19171648, 4294967295, 19171644, 224, 19143524, 26626880, 4292969360,
13022924, 0, 4294967295, 0, 80, 4150968980, 26626880, 0, 13023288, 0, 0, 4292969424}}}}
send_ready_for_query = false
disable_idle_in_transaction_timeout = false
__func__ = "PostgresMain"
#16 0x00d35ebc in BackendRun (port=0x1964b40) at ./build/../src/backend/postmaster/postmaster.c:4361
ac = 1
secs = 590764407
usecs = 199338
i = 1
av = 0x1966e38
maxac = <optimized out>
av = <optimized out>
maxac = <optimized out>
ac = <optimized out>
secs = <optimized out>
usecs = <optimized out>
i = <optimized out>
__func__ = "BackendRun"
#17 BackendStartup (port=0x1964b40) at ./build/../src/backend/postmaster/postmaster.c:4033
bn = 0x19607c0
pid = <optimized out>
bn = <optimized out>
pid = <optimized out>
__func__ = "BackendStartup"
save_errno = <optimized out>
#18 ServerLoop () at ./build/../src/backend/postmaster/postmaster.c:1706
port = 0x1964b40
i = <optimized out>
rmask = {fds_bits = {16, 0 <repeats 31 times>}}
selres = <optimized out>
now = <optimized out>
readmask = {fds_bits = {24, 0 <repeats 31 times>}}
nSockets = 5
last_lockfile_recheck_time = 1537449152
last_touch_time = 1537449090
__func__ = "ServerLoop"
#19 0x00d36bdc in PostmasterMain (argc=<optimized out>, argv=<optimized out>) at ./build/../src/backend/postmaster/postmaster.c:1379
opt = <optimized out>
status = <optimized out>
userDoption = <optimized out>
listen_addr_saved = <optimized out>
i = <optimized out>
output_config_variable = <optimized out>
__func__ = "PostmasterMain"
#20 0x00a4e050 in main (argc=5, argv=0x193b0e0) at ./build/../src/backend/main/main.c:228
No locals.

Christoph