postgresql signal 5生成core分析

postgresql signal 5生成core，如下：

[zjh@hs-10-20-30-193 data]$ gdb lightdb core.49666 
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7
Copyright (C) 2013 Free Software Foundation, Inc.
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<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/zjh/stage/lightdb-x/bin/lightdb...done.
[New LWP 49666]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `lightdb: zjh postgres [local] SELECT         '.
Program terminated with signal 5, Trace/breakpoint trap.
#0  0x00000000008e148a in AllocSetAlloc (context=0x1c2a220, size=40) at aset.c:721
721    {
warning: File "/usr/local/lib64/libstdc++.so.6.0.24-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load:/usr/bin/mono-gdb.py".
To enable execution of this file add
    add-auto-load-safe-path /usr/local/lib64/libstdc++.so.6.0.24-gdb.py
line to your configuration file "/home/zjh/.gdbinit".
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    set auto-load safe-path /
line to your configuration file "/home/zjh/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
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Missing separate debuginfos, use: debuginfo-install cyrus-sasl-lib-2.1.26-23.el7.x86_64 glibc-2.17-326.el7_9.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-50.el7.x86_64 libcom_err-1.42.9-19.el7.x86_64 libcurl-7.29.0-59.el7_9.1.x86_64 libicu-50.2-4.el7_7.x86_64 libidn-1.28-4.el7.x86_64 libpmem-1.5.1-2.1.el7.x86_64 libselinux-2.5-15.el7.x86_64 libssh2-1.8.0-4.el7.x86_64 libxml2-2.9.1-6.el7.5.x86_64 lz4-1.8.3-1.el7.x86_64 nspr-4.32.0-1.el7_9.x86_64 nss-3.53.1-7.el7_9.x86_64 nss-softokn-freebl-3.67.0-3.el7_9.x86_64 nss-util-3.67.0-1.el7_9.x86_64 openldap-2.4.44-23.el7_9.x86_64 openssl-libs-1.0.2k-21.el7_9.x86_64 pcre-8.32-17.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-19.el7_9.x86_64
(gdb) bt
#0  0x00000000008e148a in AllocSetAlloc (context=0x1c2a220, size=40) at aset.c:721
#1  0x00000000008e7889 in palloc (size=size@entry=40) at mcxt.c:963
#2  0x00000000006a914a in expression_tree_mutator (node=node@entry=0x1d5e3f8, mutator=mutator@entry=0x7010d0 <eval_const_expressions_mutator>, context=context@entry=0x7fff375ec230)
    at nodeFuncs.c:2649
#3  0x0000000000701118 in eval_const_expressions_mutator (node=0x1d5e3f8, context=0x7fff375ec230) at clauses.c:3609
#4  0x0000000000701c09 in eval_const_expressions_mutator (node=0x1d5e4e8, context=0x7fff375ec230) at clauses.c:2853
#5  0x00000000006a923e in expression_tree_mutator (node=0x1d5e498, mutator=mutator@entry=0x7010d0 <eval_const_expressions_mutator>, context=context@entry=0x7fff375ec230) at nodeFuncs.c:3096
#6  0x0000000000702d73 in simplify_function (funcid=67, result_type=16, result_typmod=result_typmod@entry=-1, result_collid=0, input_collid=100, args_p=args_p@entry=0x7fff375ec1c0, 
    funcvariadic=funcvariadic@entry=false, process_args=process_args@entry=true, allow_non_const=allow_non_const@entry=true, context=context@entry=0x7fff375ec230) at clauses.c:3981
#7  0x00000000007012c6 in eval_const_expressions_mutator (node=node@entry=0x1d5e588, context=context@entry=0x7fff375ec230) at clauses.c:2592
#8  0x00000000007025ef in eval_const_expressions (root=root@entry=0x1d64d48, node=node@entry=0x1d5e588) at clauses.c:2336
#9  0x00000000006fdf0f in preprocess_rownum (root=root@entry=0x1d64d48, parse=parse@entry=0x1c2be28) at preprownum_lt.c:342
#10 0x00000000006ecde0 in subquery_planner (glob=glob@entry=0x1d65368, parse=parse@entry=0x1c2be28, parent_root=parent_root@entry=0x0, hasRecursion=hasRecursion@entry=false, 
    tuple_fraction=tuple_fraction@entry=0) at planner.c:694
#11 0x00000000006f07b7 in standard_planner (parse=0x1c2be28, query_string=query_string@entry=0x0, cursorOptions=2048, boundParams=0x0) at planner.c:416
#12 0x00007fa3a90244dd in distributed_planner (parse=0x1c2be28, query_string=<optimized out>, cursorOptions=<optimized out>, boundParams=<optimized out>) at planner/distributed_planner.c:303
#13 0x00007fa3a6214949 in pgss_planner (parse=0x1c2be28, query_string=0x1c2a338 "select * from temp2 a2,temp1 a1 left join temp3 a3 on a1.aid=a3.cid where a1.aid=a3.cid;", 
    cursorOptions=2048, boundParams=0x0) at pg_stat_statements.c:952
#14 0x00007fa3a59df0b5 in pg_hint_plan_planner (parse=<optimized out>, query_string=<optimized out>, cursorOptions=<optimized out>, boundParams=<optimized out>) at pg_hint_plan.c:7279
#15 0x00000000007a963c in pg_plan_query (querytree=querytree@entry=0x1c2be28, 
    query_string=query_string@entry=0x1c2a338 "select * from temp2 a2,temp1 a1 left join temp3 a3 on a1.aid=a3.cid where a1.aid=a3.cid;", cursorOptions=cursorOptions@entry=2048, 
    boundParams=boundParams@entry=0x0) at postgres.c:888
#16 0x00000000007a9733 in pg_plan_queries (querytrees=0x1d6b548, 
    query_string=query_string@entry=0x1c2a338 "select * from temp2 a2,temp1 a1 left join temp3 a3 on a1.aid=a3.cid where a1.aid=a3.cid;", cursorOptions=cursorOptions@entry=2048, 
    boundParams=boundParams@entry=0x0) at postgres.c:979
#17 0x00000000007a9a03 in exec_simple_query (query_string=0x1c2a338 "select * from temp2 a2,temp1 a1 left join temp3 a3 on a1.aid=a3.cid where a1.aid=a3.cid;") at postgres.c:1179
#18 0x00000000007aaf5b in PostgresMain (argc=<optimized out>, argv=argv@entry=0x1c8b8c8, dbname=0x1c26da8 "postgres", username=<optimized out>) at postgres.c:4496
#19 0x000000000048b031 in BackendRun (port=<optimized out>, port=<optimized out>) at postmaster.c:4982
#20 BackendStartup (port=0x1c83a10) at postmaster.c:4666
#21 ServerLoop () at postmaster.c:1929
#22 0x0000000000733c2e in PostmasterMain (argc=argc@entry=3, argv=argv@entry=0x1c24d20) at postmaster.c:1563
#23 0x000000000048bfdd in main (argc=3, argv=0x1c24d20) at main.c:231