Re: Further debugging kernel panics.
Re: Further debugging kernel panics.
- Subject: Re: Further debugging kernel panics.
- From: Pekka Nikander <email@hidden>
- Date: Mon, 27 Sep 2004 09:55:49 +0300
Well I think I know what it is, but can't get the symbols to load.
When I load my kext, and do kextstat, the addresses begin there, so
that is must be where it is crashing within my NKE, but I try to
load my kext's symbol file generated by kextload -s, and do
backtrace(bt) and still it shows the ??,
I had problems of debugging symbols being removed from my kexts.
It appeared that I needed to do two things to fix it:
- change some project property in Xcode (don't remember any more
which one, as I have moved away from Xcode to use plain old
Makefiles)
- not to use Xcode to "install" the kext in /tmp, but copy it
verbatim. For some reason I couldn't make Xcode install target
not to strip the kext.
Finally, it was necessary for me to copy back the symbol
table, as generated with kextload -s, from the target machine
back go the machine running gdb, and make sure that I was
loading the right kernel to gdb. (I was running a debug kernel
on the target machine, and regular kernel on the one where I run
gdb.)
--Pekka
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