BUG #14781: server process was terminated by signal 11: Segmentation fault

The following bug has been logged on the website:

Bug reference: 14781
Logged by: Maksim Karaba
Email address: maksim_karaba(at)epam(dot)com
PostgreSQL version: 9.6.4
Operating system: CentOS Linux release 7.3.1611 (Core)
Description:

Hi!
We are getting error "server process was terminated by signal 11:
Segmentation fault" and server goes to recovery mode on production system.
It repeats several times a day, always on complicated updates using
postgres_fdw. Could you provide any workaround? Version Postgresql 9.6.4
Error from /var/log/messages :
bigdatadb kernel: postgres[17467]: segfault at 58 ip 00000000005c2f94 sp
00007ffdc06b2260 error 4 in postgres[400000+616000]
bigdatadb abrt-hook-ccpp: Process 17467 (postgres) of user 26 killed by
SIGSEGV - dumping core

And we have core dump bt list:

#0 ExecProcNode (node=0x0) at execProcnode.c:380
result = <optimized out>
__func__ = "ExecProcNode"
#1 0x00007f534be36554 in postgresRecheckForeignScan (node=<optimized out>,
slot=0x6afbf68) at postgres_fdw.c:2059
scanrelid = <optimized out>
outerPlan = <optimized out>
result = <optimized out>
#2 0x00000000005e3b7c in ForeignRecheck (node=node(at)entry=0x6afba48,
slot=slot(at)entry=0x6afbf68) at nodeForeignscan.c:101
fdwroutine = 0x6a48b88
econtext = 0x6afbb58
#3 0x00000000005ca5a6 in ExecScanFetch (recheckMtd=0x5e3b40
<ForeignRecheck>, accessMtd=0x5e3bb0 <ForeignNext>, node=0x6afba48) at
execScan.c:85
slot = <optimized out>
scanrelid = <optimized out>
estate = <optimized out>
#4 ExecScan (node=node(at)entry=0x6afba48, accessMtd=accessMtd(at)entry=0x5e3bb0
<ForeignNext>, recheckMtd=recheckMtd(at)entry=0x5e3b40 <ForeignRecheck>) at
execScan.c:180
econtext = 0x6afbb58
qual = 0x0
projInfo = 0x6afc0d0
isDone = ExprSingleResult
resultSlot = <optimized out>
#5 0x00000000005e3c5f in ExecForeignScan (node=node(at)entry=0x6afba48) at
nodeForeignscan.c:119
No locals.
#6 0x00000000005c36a8 in ExecProcNode (node=node(at)entry=0x6afba48) at
execProcnode.c:465
result = <optimized out>
__func__ = "ExecProcNode"
#7 0x00000000005e0889 in ExecSort (node=node(at)entry=0x6afb7d8) at
nodeSort.c:103
plannode = <optimized out>
outerNode = 0x6afba48
tupDesc = <optimized out>
estate = 0x6a42dc8
dir = ForwardScanDirection
tuplesortstate = 0x6b70868
slot = <optimized out>
#8 0x00000000005c3648 in ExecProcNode (node=node(at)entry=0x6afb7d8) at
execProcnode.c:495
result = <optimized out>
__func__ = "ExecProcNode"
#9 0x00000000005e448e in begin_partition
(winstate=winstate(at)entry=0x6a50b28) at nodeWindowAgg.c:1082
outerslot = <optimized out>
outerPlan = 0x6afb7d8
numfuncs = 1
i = <optimized out>
#10 0x00000000005e6a4b in ExecWindowAgg (winstate=winstate(at)entry=0x6a50b28)
at nodeWindowAgg.c:1691
result = <optimized out>
isDone = ExprSingleResult
econtext = <optimized out>
i = <optimized out>
numfuncs = <optimized out>
__func__ = "ExecWindowAgg"
#11 0x00000000005c3618 in ExecProcNode (node=0x6a50b28) at
execProcnode.c:507

Thank you!