Latest EPICS 7 snapshot causes IOC crash

["Williams Jr., Ernest L." <ernesto@slac.stanford.edu>]

Hi everyone,

I am using the latest EPICS7 snapshot as of last night:

To synch up I did the following in my EPICS TOP directory:

(1)   git pull

(2)   .ci/checkout-modules.sh

==================================================================

ernesto@aird-pc90626  (core/master) $ pwd

/afs/slac/g/lcls/epics/base/master-base-7.0

ernesto@aird-pc90626  (core/master) $ git branch

* core/master

ernesto@aird-pc90626  (core/master) $ git describe --tags

R7.0.1.1-93-g2797233

===================================================================

Then I used  makeBaseApp.pl to create a test IOC application

makeBaseApp.pl -t example Saturn

makeBaseApp.pl  -i -t example sioc-b34-bl01

My EPICS_HOST_ARCH=linux-x86_64  (RHEL6)

When executing the IOC 

ernesto@aird-pc90626  $ ulimit -c unlimited

ernesto@aird-pc90626  $ ./st.cmd

#!../../bin/linux-x86_64/Saturn

< envPaths

epicsEnvSet("IOC","sioc-b34-bl01")

epicsEnvSet("TOP","/afs/slac.stanford.edu/g/lcls/vol8/epics/iocTop/users/ernesto/gitSandBox/epicsV4/Saturn")

epicsEnvSet("EPICS_BASE","/afs/slac/g/lcls/epics/base/master-base-7.0")

cd "/afs/slac.stanford.edu/g/lcls/vol8/epics/iocTop/users/ernesto/gitSandBox/epicsV4/Saturn"

## Register all support components

dbLoadDatabase "dbd/Saturn.dbd"

Saturn_registerRecordDeviceDriver pdbbase

## Load record instances

dbLoadTemplate "db/user.substitutions"

dbLoadRecords "db/SaturnVersion.db", "user=ernesto"

dbLoadRecords "db/dbSubExample.db", "user=ernesto"

#var mySubDebug 1

traceIocInit

iocInit will be traced

cd "/afs/slac.stanford.edu/g/lcls/vol8/epics/iocTop/users/ernesto/gitSandBox/epicsV4/Saturn/iocBoot/sioc-b34-bl01"

iocInit

iocInit: Reached initHookAtIocBuild

Starting iocInit

iocInit: Reached initHookAtBeginning

############################################################################

## EPICS R7.0.1.2-DEV

## EPICS Base built Jun  4 2018

############################################################################

iocInit: Reached initHookAfterCallbackInit

Segmentation fault (core dumped)

ernesto@aird-pc90626  $

Back Trace follows:

==============================================

(gdb) bt

#0  freeListMalloc (pvt=0x0) at ../../src/freeList/freeListLib.c:86

#1  0x00007f8b75104666 in freeListCalloc (pvt=<value optimized out>) at ../../src/freeList/freeListLib.c:69

#2  0x00007f8b755cd4ec in dbChannelCreate (name=0x23ed408 "ernesto:circle:angle.VAL") at ../../../src/ioc/db/dbChannel.c:486

#3  0x00007f8b765f559c in DBCH::DBCH (this=0x7ffd805984e0, name=<value optimized out>) at ../pvif.cpp:45

#4  0x00007f8b76607e43 in PDBProvider::PDBProvider (this=0x23ecc90) at ../pdb.cpp:399

#5  0x00007f8b76600731 in epics::pvAccess::SingletonChannelProviderFactory<PDBProvider>::sharedInstance (this=0x234d950)

    at /afs/slac.stanford.edu/g/lcls/vol8/epics/base/master-base-7.0_branch/include/pv/pvAccess.h:1334

#6  0x00007f8b765ffd0a in epics::pvAccess::SingletonChannelProviderFactory<PDBProvider>::newInstance (this=<value optimized out>,

    conf=<value optimized out>) at /afs/slac.stanford.edu/g/lcls/vol8/epics/base/master-base-7.0_branch/include/pv/pvAccess.h:1343

#7  0x00007f8b75e9001e in epics::pvAccess::ChannelProviderRegistry::createProvider (this=<value optimized out>,

    providerName=<value optimized out>, conf=std::tr1::shared_ptr (count 1) 0x23ecc20)

    at ../../src/factory/ChannelAccessFactory.cpp:52

#8  0x00007f8b75e7f5b0 in pvac::ClientProvider::ClientProvider (this=0x23ec700, providerName="server:QSRV",

    conf=std::tr1::shared_ptr (empty) 0x0) at ../../src/client/client.cpp:265

#9  0x00007f8b76634d9d in pvalink::pvaGlobal_t::pvaGlobal_t (this=0x23ec700) at ../pvalink_channel.cpp:23

#10 0x00007f8b766272f9 in (anonymous namespace)::initPVALink (state=<value optimized out>) at ../pvalink.cpp:103

#11 0x00007f8b755ea019 in initHookAnnounce (state=initHookAfterCaLinkInit) at ../../../src/ioc/db/initHooks.c:88

#12 0x00007f8b75600478 in iocBuild_2 () at ../../../src/ioc/misc/iocInit.c:149

#13 0x00007f8b75600ab5 in iocBuild () at ../../../src/ioc/misc/iocInit.c:202

#14 0x00007f8b75600b19 in iocInit () at ../../../src/ioc/misc/iocInit.c:107

#15 0x00007f8b75106660 in iocshBody (pathname=<value optimized out>, commandLine=0x0, macros=0x0) at ../../src/iocsh/iocsh.cpp:835

#16 0x00000000004051b2 in main (argc=<value optimized out>, argv=<value optimized out>) at ../SaturnMain.cpp:17

(gdb)

Cheers,

Ernest Williams
Dept. Head, Advanced Control Systems
Advanced Instrumentation Research, Technology Innovation Directorate
SLAC National Laboratory, Stanford University