panic while using gdb amd64 freebsd7.2

[Agarwal, Mayank]

Hi,

 

I have looked at archives but with no output.

 

I am running freebsd7.2 amd64 as a virtual machine(VM) in vmware ESX
server. I have configured remote gdb to debug the kernel modules. My
problem is that whenever the breakpoint is hit and the I issue next or
step kernel panics with "double fault" error. This configuration was
working for 32-bit machine very well. I am trying to debug the tmpfs
module.

 

Panic message on console is:

 

Fatal double fault

rip = 0xffffffff80552be1

rsp = 0xffffffff006f5000

rbp = 0xffffffff006f5000

cpuid = 0; apic id = 00

panic: double fault

cpuid = 0

Uptime: 1h16m8s

Physical memory: 4555 MB

Dumping 207 MB: 192 176 160 144 128 112 96 80 64 48 32 16

Dump complete

 

 

I tried searching this problem on google also but with no help.

 

Any help will be appreciated.

 

Thanks,

Mayank