On 8/29/15 8:04 AM, Tom Lane wrote:
Michael Paquier <michael.paqu...@gmail.com> writes:
Ah, OK, you meant this file... Yes I was able to receive it as well in your
original email. I'll try to investigate further later, but Tom may beat me
first. He usually does.
Jim had indicated the bug wasn't reproducible on the strength of that
info, so I was waiting for him to provide a more reproducible case.
It was reproducible, just not very self contained. [1] is a bit better,
but it still involves pgTap as well as test_factory.
Steps to reproduce:
Download https://github.com/BlueTreble/test_factory/archive/crash.zip
Unzip, cd into directory
pgxn install pgtap (or just make test)
make install if you didn't do make test
psql -f crash.sql
Stack trace below. Relevant assert:
1967 * As per notes above, a rel to be rebuilt MUST have refcnt >
0; while of
1968 * course it would be a bad idea to blow away one with nonzero
refcnt.
1969 */
-> 1970 Assert(rebuild ?
1971 !RelationHasReferenceCountZero(relation) :
1972 RelationHasReferenceCountZero(relation));
Relevant bits of relation:
│ ◆─(Relation) relation = 0x00000001165832a8
││
│
│ ├─◆─(RelFileNode) rd_node
││
│
│ ├─◆─(SMgrRelationData *) rd_smgr = 0x0000000000000000
││
│
│ ├─(int) rd_refcnt = 1
││
│
│ ├─(BackendId) rd_backend = 2
││
│
│ ├─(bool) rd_islocaltemp = '\x01'
││
│
│ ├─(bool) rd_isnailed = '\0'
││
│
│ ├─(bool) rd_isvalid = '\x01'
││
│
│ ├─(char) rd_indexvalid = '\0'
││
│
│ ├─(SubTransactionId) rd_createSubid = 16
││
│
│ ├─(SubTransactionId) rd_newRelfilenodeSubid = 0
││
│
│ ├─◆─(Form_pg_class) rd_rel = 0x00000001165838d8
││
│
│ │ ├─◆─(NameData) relname
││
│
│ │ │ └─◆─(char [64]) data "invoice_0000000003"
rebuild is 0.
[1]https://github.com/BlueTreble/test_factory/blob/crash/crash.sql
(lldb) bt
* thread #1: tid = 0x3b03a0, 0x00007fff92a5a866
libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread',
stop reason = signal SIGABRT
* frame #0: 0x00007fff92a5a866 libsystem_kernel.dylib`__pthread_kill + 10
frame #1: 0x00007fff9001b35c libsystem_pthread.dylib`pthread_kill + 92
frame #2: 0x00007fff8cf89b1a libsystem_c.dylib`abort + 125
frame #3: 0x000000010cdb4039
postgres`ExceptionalCondition(conditionName=0x000000010cf59cfd,
errorType=0x000000010cec392d, fileName=0x000000010cf59045, lineNumber=1972) +
137 at assert.c:54
frame #4: 0x000000010cd9b332
postgres`RelationClearRelation(relation=0x0000000116594cd8, rebuild='\0') + 162
at relcache.c:1970
frame #5: 0x000000010cd9cc0f
postgres`AtEOSubXact_cleanup(relation=0x0000000116594cd8, isCommit='\0',
mySubid=15, parentSubid=14) + 79 at relcache.c:2665
frame #6: 0x000000010cd9cb92
postgres`AtEOSubXact_RelationCache(isCommit='\0', mySubid=15, parentSubid=14) +
242 at relcache.c:2633
frame #7: 0x000000010c9b6e88 postgres`AbortSubTransaction + 440 at
xact.c:4373
frame #8: 0x000000010c9b8ef2
postgres`RollbackAndReleaseCurrentSubTransaction + 178 at xact.c:3948
frame #9: 0x0000000116295c93
plpgsql.so`exec_stmt_block(estate=0x00007fff532bfa50, block=0x00007fa3f56ab600)
+ 1443 at pl_exec.c:1214
frame #10: 0x0000000116294625
plpgsql.so`plpgsql_exec_function(func=0x00007fa3f5369c10,
fcinfo=0x00007fa3f5634160, simple_eval_estate=0x0000000000000000) + 837 at
pl_exec.c:344
frame #11: 0x000000011628dbb6
plpgsql.so`plpgsql_call_handler(fcinfo=0x00007fa3f5634160) + 470 at
pl_handler.c:243
frame #12: 0x000000010caf2471
postgres`ExecMakeFunctionResultNoSets(fcache=0x00007fa3f56340f0,
econtext=<unavailable>, isNull=0x00007fff532bfd5b, isDone=<unavailable>) + 209
at execQual.c:2026
frame #13: 0x0000000116299772
plpgsql.so`exec_eval_simple_expr(estate=0x00007fff532c0090,
expr=0x00007fa3f53a1e60, result=0x00007fff532bfd10, isNull=0x00007fff532bfd5b,
rettype=0x00007fff532bfd5c) + 562 at pl_exec.c:5203
frame #14: 0x000000011629911d
plpgsql.so`exec_eval_expr(estate=0x00007fff532c0090, expr=0x00007fa3f53a1e60,
isNull=0x00007fff532bfd5b, rettype=0x00007fff532bfd5c) + 93 at pl_exec.c:4790
frame #15: 0x000000011629ac70
plpgsql.so`exec_assign_expr(estate=0x00007fff532c0090,
target=0x00007fa3f541c100, expr=0x00007fa3f53a1e60) + 48 at pl_exec.c:3992
frame #16: 0x000000011629b300
plpgsql.so`exec_stmt_assign(estate=0x00007fff532c0090, stmt=0x00007fa3f53a1f50)
+ 128 at pl_exec.c:1511
frame #17: 0x000000011629af6c
plpgsql.so`exec_stmt(estate=0x00007fff532c0090, stmt=0x00007fa3f53a1f50) + 252
at pl_exec.c:1399
frame #18: 0x000000011629ad1e
plpgsql.so`exec_stmts(estate=0x00007fff532c0090, stmts=0x00007fa3f53a1bd0) +
126 at pl_exec.c:1362
frame #19: 0x0000000116295f1f
plpgsql.so`exec_stmt_block(estate=0x00007fff532c0090, block=0x00007fa3f53a21d0)
+ 2095 at pl_exec.c:1300
frame #20: 0x0000000116294625
plpgsql.so`plpgsql_exec_function(func=0x00007fa3f52b1a30,
fcinfo=0x00007fa3f53f9500, simple_eval_estate=0x0000000000000000) + 837 at
pl_exec.c:344
frame #21: 0x000000011628dbb6
plpgsql.so`plpgsql_call_handler(fcinfo=0x00007fa3f53f9500) + 470 at
pl_handler.c:243
frame #22: 0x000000010caf2471
postgres`ExecMakeFunctionResultNoSets(fcache=0x00007fa3f53f9490,
econtext=<unavailable>, isNull=0x00007fa3f53f9f98, isDone=<unavailable>) + 209
at execQual.c:2026
frame #23: 0x000000010caf1a4d postgres`ExecProject [inlined] ExecTargetList(targetlist=<unavailable>,
econtext=<unavailable>, values=<unavailable>, isnull=<unavailable>,
itemIsDone=<unavailable>, isDone=<unavailable>) + 90 at execQual.c:5307
frame #24: 0x000000010caf19f3 postgres`ExecProject(projInfo=<unavailable>,
isDone=0x00007fff532c033c) + 323 at execQual.c:5522
frame #25: 0x000000010cb07233 postgres`ExecResult(node=0x00007fa3f53f9150)
+ 179 at nodeResult.c:155
frame #26: 0x000000010caeae1c
postgres`ExecProcNode(node=0x00007fa3f53f9150) + 92 at execProcnode.c:373
frame #27: 0x000000010cae6836
postgres`ExecutePlan(estate=0x00007fa3f53f9038, planstate=0x00007fa3f53f9150,
operation=CMD_SELECT, sendTuples='\x01', numberTuples=0,
direction=ForwardScanDirection, dest=0x00007fa3f53cd740) + 118 at
execMain.c:1490
frame #28: 0x000000010cae675b
postgres`standard_ExecutorRun(queryDesc=0x00007fa3f54f3638,
direction=ForwardScanDirection, count=0) + 523 at execMain.c:319
frame #29: 0x000000010cae653d
postgres`ExecutorRun(queryDesc=0x00007fa3f54f3638,
direction=ForwardScanDirection, count=0) + 77 at execMain.c:267
frame #30: 0x000000010cc2a2b7 postgres`PortalRunSelect(portal=0x00007fa3f3012638,
forward=<unavailable>, count=0, dest=<unavailable>) + 263 at pquery.c:946
frame #31: 0x000000010cc29dd5 postgres`PortalRun(portal=0x00007fa3f3012638,
count=9223372036854775807, isTopLevel=<unavailable>, dest=0x00007fa3f53cd740,
altdest=<unavailable>, completionTag=0x00007fff532c06d0) + 469 at pquery.c:790
frame #32: 0x000000010cc25b86
postgres`exec_simple_query(query_string=0x00007fa3f300e638) + 1302 at
postgres.c:1072
frame #33: 0x000000010cc24def postgres`PostgresMain(argc=1,
argv=0x00007fa3f401c5f0, dbname=0x00007fa3f401c450,
username=0x00007fa3f30031f8) + 2895 at postgres.c:4074
frame #34: 0x000000010cb9da48 postgres`PostmasterMain [inlined] BackendRun
+ 8024 at postmaster.c:4155
frame #35: 0x000000010cb9da22 postgres`PostmasterMain [inlined]
BackendStartup at postmaster.c:3829
frame #36: 0x000000010cb9da22 postgres`PostmasterMain [inlined] ServerLoop
at postmaster.c:1597
frame #37: 0x000000010cb9da22 postgres`PostmasterMain(argc=<unavailable>,
argv=<unavailable>) + 7986 at postmaster.c:1244
frame #38: 0x000000010cb218cd postgres`main(argc=<unavailable>,
argv=<unavailable>) + 1325 at main.c:228
frame #39: 0x00007fff8e9a35fd libdyld.dylib`start + 1
(lldb)
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
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