Experimental Physics and Industrial Control System
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Hello Lewis,
It is unlikely that you can determine the cause just from this VxWorks
task crash message. The tNetTask may not be the root cause of the
crash; it may just be the current running task when the machine check
exception was taken.
If the "Exception next instruction address: 0x001722a0" message is
consistent, you might try to dump instructions around that address ("l
0x001722a0") and get lucking enough to find an external reference that
would get you some idea of where execution was when the error occurred.
Without a source-code debugger there is not much chance of determining
what is wrong and, unfortunately, you are running an old version of
VxWorks that we (APS) no longer have source-code debugging tools for.
My suggestion is upgrade to VxWorks 6.9.4.1. We have source-code
debugging for that via the network and if that does not work (because of
a hard crash), we have a Wind River ICE2.
Ron
On 10/15/2015 3:15 PM, J. Lewis Muir wrote:
Hello, Everyone!
I had a VxWorks IOC crash on me. The only information I have is the
following from the console:
machine check
Exception next instruction address: 0x001722a0
Machine Status Register: 0x0008b030
Condition Register: 0x20000043
Task: 0x1ef70f10 "tNetTask"^G
Link Register: 0x0017228c
Is there any way to figure out the cause? I gather that tNetTask has to
do with the VxWorks networking stack? Does that tell me where the issue
was, or is that just where the issue happened to show up? Any way to
use addr2line with this information?
Environment:
* VME processor module: Motorola MVME-5100 (vxWorks-ppc604_long)
- CPU: MPC 750
- Memory: 512 MB
* OS: VxWorks 5.5.2
* Kernel: WIND 2.6
* BSP: mv5100-anj-no-nfsv3 (from Andrew Johnson)
* Build toolchain: Tornado 2.2.2
* EPICS 3.14.12.3 (+ Known Problems patches except for the patch from
2013-12-04)
Thank you!
Lewis
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ANJ, 16 Dec 2015 |
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