system hang when invoking the kdb

[sri pnvs]

Hello,
Can some please help me for my query,

I am using redhat-2.6.9 kernel. I applied the KDB-v4.4 patch successfully.
But when I reboot system with kdb supported kernel, If I press PAUSE button
it enter into kdb mode.
I am getting following thing.

Entering kdb(current = 0xc0479b00, pid0) on procssor 0 due to keyboad entry.
[0]kdb>

after this the system is hanged. I counld not able to write anything here.
How to Invoke the kdb without this problem. This is very important for me.

I sincerely appreciate and thanks for your help on this.
 __________________
Thanks!
Cyber


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