Re: IOC crash

[Michael Davidsaver <mdavidsaver@gmail.com>]

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 <rivers@cars.uchicago.edu <mailto:rivers@cars.uchicago.edu>> 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: tech-talk-bounces@aps.anl.gov <mailto:tech-talk-bounces@aps.anl.gov> <tech-talk-bounces@aps.anl.gov <mailto:tech-talk-bounces@aps.anl.gov>> on behalf of Hinko Kocevar <hinkocevar@gmail.com <mailto:hinkocevar@gmail.com>>
>     Sent: Thursday, January 18, 2018 4:55 AM
>     To: tech-talk@aps.anl.gov <mailto:tech-talk@aps.anl.gov>
>     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 tech-talk@aps.anl.gov <mailto:tech-talk@aps.anl.gov>
>     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