Hello managers,
since we attached servers with ATMworks 750 adapters to
out ATM emulates LANs, we experience kernel crashes that seem
to be triggered by irregular ATM connection releases.
These crashes mostly occurred when some other LANE client
that had crashed comes online again.
Has anyone made similar experiences? Do you know a bugfix?
Data:
Machine: DEC Alpha 3000/500 or 3000/600 (this occured on several machines)
OS: Digital Unix 4.0b
ATM adapter: ATMworks 750 Rev. A02
ATM Switch: Gigaswitch/ATM with DAGGL-AA Line Cards, Firmware Rev. 2.1.1
This is my /etc/atm.conf:
print Starting ATM Network
up driver=lta0
wait state=up driver=lta0
run /usr/sbin/atmsig version driver=lta0 uni=3.1
run /usr/sbin/atmsig up driver=lta0 wait
+vfc driver=lta0
run /usr/sbin/atmelan create driver=lta0
print ATM network started
In the messages file, the following is reported:
Jul 16 03:58:56 region vmunix: ATM LANE - Connection Released, cause = 27
Jul 16 03:58:56 region vmunix: VC released on interface lta0:Source Address:
"3999990000802ba4fb0802b801a600"
Jul 16 03:58:56 region vmunix: Destination Address:
"3999990000802ba4fb0020da650302"
Jul 16 03:58:56 region vmunix: Call Duration: 54723 seconds
Jul 16 05:24:49 region vmunix:
Jul 16 05:24:49 region vmunix: trap: invalid memory read access from kernel
mode
Jul 16 05:24:49 region vmunix:
Jul 16 05:24:49 region vmunix: faulting virtual address:
0x0000000000000020
Jul 16 05:24:49 region vmunix: pc of faulting instruction:
0xfffffc0000325d38
Jul 16 05:24:49 region vmunix: ra contents at time of fault:
0xfffffc0000326160
Jul 16 05:24:49 region vmunix: sp contents at time of fault:
0xffffffff873ff9b8
Jul 16 05:24:49 region vmunix:
Jul 16 05:24:49 region vmunix: panic (cpu 0): kernel memory fault
Jul 16 05:24:49 region vmunix: syncing disks... 9 done
This is an example entry from the uerf log:
EVENT CLASS ERROR EVENT
OS EVENT TYPE 302. PANIC
SEQUENCE NUMBER 21.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Wed Jul 16 04:07:07 1997
OCCURRED ON SYSTEM region
SYSTEM ID x00020004 CPU TYPE: DEC 3000
SYSTYPE x00000000
MESSAGE panic (cpu 0): kernel memory fault
Thanks, Hans
--
Hans Ranke Hans.Ranke_at_regent.e-technik.tu-muenchen.de
Lehrstuhl fuer Institute of
Rechnergestuetztes Entwerfen Electronic Design Automation
Technische Universitaet Muenchen Technical University of Munich, Germany
Phone +49 89 289 23660 Fax +49 89 289 23696
Received on Fri Jul 18 1997 - 10:37:28 NZST