Experimental Physics and
Industrial Control System

Hinko Kocevar <[email protected]> · Fri, 19 Jan 2018 09:31:45 +0100

Thanks for the pointers! I'll see what I can still do ; not sure where
the core dump file is saved on CentOS 7.3 OS, and if core saving was
enabled at the time of the crash..

On Thu, Jan 18, 2018 at 10:29 PM, Michael Davidsaver
<[email protected]> wrote:
> Hinko,
>
> If you can get a core dump, please include all threads (gdb command "thread apply all backtrace").
> I remember that I was suspicious of a race with another thread.
>
> On 01/18/2018 10:17 AM, Hinko Kocevar wrote:
>> Hi Mark,
>>
>> I'll try to find the core file. Thanks for the tip.
>>
>> /Hinko
>>
>>
>> On Thu, 18 Jan 2018 at 13:31, Mark Rivers <[email protected] <mailto:[email protected]>> wrote:
>>
>>     Hi Hinko,
>>
>>
>>     Since it generated a core file you should be able to do some more debugging with gdb.  For example what are the values of "size" and pMsg->postsize in caserverio.c?  You might be able to figure out what PV this is.
>>
>>
>>     Mark
>>
>>
>>
>>     ________________________________
>>     From: [email protected] <mailto:[email protected]> <[email protected] <mailto:[email protected]>> on behalf of Hinko Kocevar <[email protected] <mailto:[email protected]>>
>>     Sent: Thursday, January 18, 2018 4:55 AM
>>     To: [email protected] <mailto:[email protected]>
>>     Subject: IOC crash
>>
>>     Dear EPICS users,
>>
>>     here is the error I got from the IOC running EPICS base 3.15.4:
>>
>>
>>     A call to 'assert(size <= ntohs ( pMsg->m_postsize ))'
>>         by thread 'CAS-event' failed in ../../../src/ioc/rsrv/caserverio.c line 357.
>>     Dumping a stack trace of thread 'CAS-event':
>>     [    0x7f4f3abf070b]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libCom.so.3.15.4(epicsStackTrace+0x4b)
>>     [    0x7f4f3abe9e1a]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libCom.so.3.15.4(epicsAssert+0x3a)
>>     [    0x7f4f3b0db512]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libdbCore.so.3.15.4(cas_commit_msg+0x92)
>>     [    0x7f4f3b0df468]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libdbCore.so.3.15.4(read_reply+0x1d8)
>>     [    0x7f4f3b0b82f4]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libdbCore.so.3.15.4(event_task+0x1d4)
>>     [    0x7f4f3abeaf5c]:
>>     /data/shi/R3.15.4/base/lib/linux-x86_64/libCom.so.3.15.4(start_routine+0xdc)
>>     [    0x7f4f38ca8e25]: /lib64/libpthread.so.0(start_thread+0xc5)
>>     [    0x7f4f3931f34d]: /lib64/libc.so.6(clone+0x6d)
>>     EPICS Release EPICS R3.15.4 $$Date$$.
>>     Local time is 2018-01-18 11:27:33.597318519 CET
>>     Please E-mail this message to the author or to [email protected] <mailto:[email protected]>
>>     Calling epicsThreadSuspendSelf()
>>     Thread CAS-event (0x7f4ef804c510) suspended
>>     CAS: request from 127.0.0.1:48578 <http://127.0.0.1:48578> => bad resource ID
>>     CAS: Request from 127.0.0.1:48578 <http://127.0.0.1:48578> => cmmd=2 cid=0x1ce3 type=34 count=1
>>     postsize=0
>>     CAS: Request from 127.0.0.1:48578 <http://127.0.0.1:48578> =>   available=0x1058 N=0 paddr=0x7f4ec000c5e8
>>     CAS: forcing disconnect from 127.0.0.1:48578 <http://127.0.0.1:48578>
>>     Segmentation fault (core dumped)
>>
>>
>>     Thanks,
>>     Hinko
>>
>> --
>> .. the more I see the less I believe.., AE AoR
>

-- 
.. the more I see the less I believe.., AE AoR

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System