Re: "stuck spinlock"

On Dec 12, 2013, at 4:23 PM, Andres Freund <andres@2ndquadrant.com> wrote:
> Could you install the -dbg package and regenerate?

Of course!

#0  0x00007f699a4fa425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f699a4fdb8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f699c81991b in errfinish (dummy=<optimized out>)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/utils/error/elog.c:542
#3  0x00007f699c81a477 in elog_finish (elevel=<optimized out>,    fmt=0x7f699c937a48 "stuck spinlock (%p) detected at
%s:%d")  at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/utils/error/elog.c:1297 
#4  0x00007f699c735db3 in s_lock_stuck (line=1099,    file=0x7f699c934a78
"/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c",lock=0x7f6585e2cbb4 "\001")   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/lmgr/s_lock.c:40
#5  s_lock (lock=0x7f6585e2cbb4 "\001",    file=0x7f699c934a78
"/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c",line=1099)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/lmgr/s_lock.c:109
#6  0x00007f699c71e1f0 in PinBuffer (buf=0x7f6585e2cb94, strategy=0x0)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c:1099
#7  0x00007f699c71eaf9 in BufferAlloc (foundPtr=0x7fff60ec563e "",    strategy=0x0, blockNum=1730,
forkNum=MAIN_FORKNUM,relpersistence=112 'p',    smgr=<optimized out>)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c:776
#8  ReadBuffer_common (smgr=<optimized out>, relpersistence=112 'p',    forkNum=MAIN_FORKNUM, blockNum=1730,
mode=RBM_NORMAL,strategy=0x0,    hit=0x7fff60ec56af "")   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c:333
#9  0x00007f699c71f53e in ReadBufferExtended (reln=0x7f6577d80560,    forkNum=MAIN_FORKNUM, blockNum=1730,
mode=<optimizedout>,    strategy=<optimized out>)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/storage/buffer/bufmgr.c:252
#10 0x00007f699c56d03a in index_fetch_heap (scan=0x7f699f94c7a0)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/access/index/indexam.c:515
#11 0x00007f699c67a0b7 in IndexOnlyNext (node=0x7f699f94b690)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/nodeIndexonlyscan.c:109
#12 0x00007f699c66e98e in ExecScanFetch (   recheckMtd=0x7f699c679fb0 <IndexOnlyRecheck>,    accessMtd=0x7f699c679fe0
<IndexOnlyNext>,node=0x7f699f94b690)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execScan.c---Type<return> to continue, or q <return> to
quit---
:82
#13 ExecScan (node=0x7f699f94b690, accessMtd=0x7f699c679fe0 <IndexOnlyNext>,    recheckMtd=0x7f699c679fb0
<IndexOnlyRecheck>)  at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execScan.c:167 
#14 0x00007f699c6679a8 in ExecProcNode (node=0x7f699f94b690)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execProcnode.c:408
#15 0x00007f699c67407f in agg_retrieve_direct (aggstate=0x7f699f94af90)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/nodeAgg.c:1121
#16 ExecAgg (node=0x7f699f94af90)   at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/nodeAgg.c:1013
#17 0x00007f699c6678b8 in ExecProcNode (node=0x7f699f94af90)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execProcnode.c:476
#18 0x00007f699c664dd2 in ExecutePlan (dest=0x7f699f98c308,    direction=<optimized out>, numberTuples=0, sendTuples=1
'\001',   operation=CMD_SELECT, planstate=0x7f699f94af90, estate=0x7f699f94ae80)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execMain.c:1472
#19 standard_ExecutorRun (queryDesc=0x7f699f940dc0, direction=<optimized out>,    count=0)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/executor/execMain.c:307
#20 0x00007f6996ad928d in explain_ExecutorRun (queryDesc=0x7f699f940dc0,    direction=ForwardScanDirection, count=0)
at/tmp/buildd/postgresql-9.3-9.3.2/build/../contrib/auto_explain/auto_explain.c:233 
#21 0x00007f69968d3525 in pgss_ExecutorRun (queryDesc=0x7f699f940dc0,    direction=ForwardScanDirection, count=0)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../contrib/pg_stat_statements/pg_stat_statements.c:717
#22 0x00007f699c745207 in PortalRunSelect (portal=0x7f699de596a0,    forward=<optimized out>, count=0, dest=<optimized
out>)  at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/tcop/pquery.c:946 
#23 0x00007f699c746651 in PortalRun (portal=0x7f699de596a0,    count=9223372036854775807, isTopLevel=1 '\001',
dest=0x7f699f98c308,   altdest=0x7f699f98c308, completionTag=0x7fff60ec5f30 "")   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/tcop/pquery.c:790
#24 0x00007f699c742960 in exec_simple_query (   query_string=0x7f699dd564a0 "SELECT COUNT(*) FROM \"signups\"  WHERE
(signups.is_supporter= true)")   at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/tcop/postgres.c:1048 
#25 PostgresMain (argc=<optimized out>, argv=<optimized out>,
---Type <return> to continue, or q <return> to quit---   dbname=0x7f699dd3e138 "nbuild", username=<optimized out>)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/tcop/postgres.c:4005
#26 0x00007f699c6ff765 in BackendRun (port=0x7f699dd82050)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/postmaster/postmaster.c:3999
#27 BackendStartup (port=0x7f699dd82050)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/postmaster/postmaster.c:3688
#28 ServerLoop ()   at /tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/postmaster/postmaster.c:1589
#29 PostmasterMain (argc=<optimized out>, argv=<optimized out>)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/postmaster/postmaster.c:1258
#30 0x00007f699c53bea2 in main (argc=5, argv=0x7f699dd3c1a0)   at
/tmp/buildd/postgresql-9.3-9.3.2/build/../src/backend/main/main.c:196

--
-- Christophe Pettus  xof@thebuild.com