Re: Reg : Understanding Kernel Panic - (panic(cpu 0 caller 0x00036B48): wait queue deadlock - wq=0x4061504, cpu=0)
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: "Herb Petschauer" <email@hidden>
- Date: Sun, 29 Jul 2007 14:21:32 -0700
Please don't repost the same email, it IS Sunday afternoon (well, here...)
developer.apple.com, type in "kernel panic". Second returned result.
Happy Reading!
Cheers,
-H.
On 29/07/07, JanakiRam <email@hidden> wrote:
> Hi ALL,
>
> I'm working on a maintainance project which has a kernel driver
> for handling file operations.When i run my kext using kextload , my system
> will panic by showing following Panic Information.
>
> My project has some code which calls the semaphore_wait &
> semaphore_signal functions.
>
> Is this panic is happening because of the deadlock ( happening
> because of the semaphore calls ) ? or is there any specific reason for this
> kind of panic.
>
> If not , how can i interpret the panic information and resolve the
> Panic. Please help me to analyze the reason for the panic.
>
> Panic.log
>
> Wed Jul 4 14:57:05 2007
> panic(cpu 0 caller 0x00036B48): wait queue deadlock - wq=0x4061504, cpu=0
>
> Latest stack backtrace for cpu 0:
> Backtrace:
> 0x00095138 0x00095650 0x00026898 0x00036B48 0x43E0D504 0x43E0D580
> 0x43E2F058 0x43E2FCC4
> 0x43E247C4 0x43E09D74 0x43E09F20 0x43E305F8 0x00091100 0x0009136C
> 0x00044C18 0x0002921C
> 0x000233F8 0x000ABAAC 0xBBD4630C
> Kernel loadable modules in backtrace (with dependencies):
> com.yourcompany.kext.mykext(1.0.0d1)@0x43e08000
> Proceeding back via exception chain:
> Exception state (sv=0x43ABA500)
> PC=0x9000AB48; MSR=0x0000D030; DAR=0x43E420DC; DSISR=0x40000000;
> LR=0x9000AA9C; R1=0xBFFFF1E0; XCP=0x00000030 (0xC00 - System call)
>
> Kernel version:
> Darwin Kernel Version 8.8.0: Fri Sep 8 17:18:57 PDT 2006; root:
> xnu-792.12.6.obj~1/RELEASE_PPC
>
> *********
>
> Please help me to solve this problem. Thanks in Advance.
>
> -JanakiRam.
>
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