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Re: Reg : Understanding Kernel Panic - (panic(cpu 0 caller 0x00036B48): wait queue deadlock - wq=0x4061504, cpu=0)

Subject: Re: Reg : Understanding Kernel Panic - (panic(cpu 0 caller 0x00036B48): wait queue deadlock - wq=0x4061504, cpu=0)
From: JanakiRam <email@hidden>
Date: Mon, 27 Aug 2007 23:52:41 +0530
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Hi ALL,

        Thanks for your support.

        I've used Two Machine Debugging Technique for getting the backtrace and also use XNU Sources as well.

        While using GDB , i've obtained the the stack trace. I'm able to get the source location for the addresses of patter : 0x000.But Unable to get the addresses starting with series 0x43E.

         One more observation is my kext is loaded at address - 0x43e08000. I think i'm not able to interpret the address starting with 0x43. I guess the problem could be either i'm not creating the symbol file for my kext or not attaching symbol file to gdb properly.

I've used the following procedure for generating the symbol file .

i) Set the 'Generate Symbol' option for XCode Project Setting.

ii) Used the '' kextload -s . MyKext.kext'

I'm attaching the symbol file to GDB using following command.

(gdb) add-symbol /tmp/com.yourcompany.kext.mykext

       Can any one provide pointer(s) to debug my kext successfully. Thanks in Advance.

-JanakiRam.

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