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[GEMPAK #VWA-157385]: Kernel crash from dcmsfc

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  • Subject: [GEMPAK #VWA-157385]: Kernel crash from dcmsfc
  • Date: Tue, 11 Dec 2007 13:20:59 -0700
> Hello Steve,
> 
> Got a soft crash from dcmsfc. Is anyone seeing this?

Gilbert,

No. I'm running dcmsfc in real time here under FC7 and haven't seen any
decoder problems.

A common reason for a decoder to ger hung up is that something caused 
more than one decoder to be writing to the same file- eg if the LDM pqact 
filled up a pipe
and so started a second instance of the decoder. That would either be slow disk 
IO
by the decoder so that dcmsfc had to wait too long for pqact, or the decoder 
was stuck in a loop.

If this is a frequent problem, then examining the dcmsfc.log file might help.
If it is repeatable on reingesting data, than it could be a bad product. Since
I haven't seen any problems here under FC7, I don't think it is a
problem with a product since I would have expected to see that here, and my 2 
copies have been
up since Dec 4.

Steve CHiswell
Unidata User Support

Steve Chiswell
Unidata User Support
> 
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Oops: 0000 [#1]
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: SMP
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: CPU:    0
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EIP:    0060:[<000000fc>]    Not tainted VLI
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EFLAGS: 00210246   (2.6.23.9-45.fc7 #1)
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EIP is at 0xfc
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: eax: 00000000   ebx: 0000007f   ecx: efa994d0   edx:
> 00000000
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: esi: c04301da   edi: 0000007f   ebp: f3d56000   esp:
> f3d56f80
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Process dcmsfc (pid: 4063, ti=f3d56000 task=f0c95230
> task.ti=f3d56000)
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Stack: 40000003 f0c95230 0000000a bf96c658 00007f00
> 0000007f f2021380 00007f00
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel:        f3d56000 c0430737 0000007f 003f11ec 003f25a4
> c040518a 0000007f bf96c658
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel:        0000000a 003f11ec 003f25a4 bf96ccd0 ffffffda
> 0000007b 0000007b c0400000
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Call Trace:
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel:  [<c0430737>] sys_exit_group+0x0/0xd
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel:  [<c040518a>] syscall_call+0x7/0xb
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel:  =======================
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Code:  Bad EIP value.
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EIP: [<000000fc>] 0xfc SS:ESP 0068:f3d56f80
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: Oops: 0000 [#2]
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: SMP
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: CPU:    1
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EIP:    0060:[<000000fc>]    Tainted: G      D VLI
> Message from syslogd@ at Mon Dec 10 17:30:14 2007 ...
> weather kernel: EFLAGS: 00210246   (2.6.23.9-45.fc7 #1)
> 
> This is what process 4063 shows:
> 
> 4063 ?        D      0:00 [dcmsfc]
> 
> *******************************************************************************
> Gilbert Sebenste                                                     ********
> (My opinions only!)                                                  ******
> Staff Meteorologist, Northern Illinois University                      ****
> E-mail: address@hidden                                  ***
> web: http://weather.admin.niu.edu                                      **
> *******************************************************************************
> 
> 


Ticket Details
===================
Ticket ID: VWA-157385
Department: Support GEMPAK
Priority: Normal
Status: Closed