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How to trace the module after system freeze?

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Operating Systems Linux How to trace the module after system freeze?
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Old 09-19-2009
Power How to trace the module after system freeze?


I wrote a kernel module that did a virtual network protocol and library that provide interface for application use to interact with the kernel module by ioctl actions.

insmod the module and unload the module, there will be no problem. But once I call the library with my example application. The system freezed. And there is almost no any information on the console. So Are there any better solutions to track what happened?

Thanks very much.

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fctl(7D)                                                              Devices                                                             fctl(7D)

fctl - Sun Fibre Channel transport library DESCRIPTION
The fctl kernel module interfaces the Sun Fibre Channel upper layer protocol (ULP) mapping modules with Sun Fibre Channel adapter (FCA) drivers. There are no user-configurable options for this module. FILES
/kernel/misc/fctl 32-bit ELF kernel module (x86) /kernel/misc/amd64/fctl 64-bit ELF kernel module (x86) /kernel/misc/sparcv9/fctl 64-bit ELF kernel module (SPARC) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |SPARC | +-----------------------------+-----------------------------+ |Interface stability |Unknown | +-----------------------------+-----------------------------+ |Availability |SUNWfctl | +-----------------------------+-----------------------------+ SEE ALSO
fp(7D) SunOS 5.10 20 Oct 2004 fctl(7D)

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