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Date: Mon, 11 Jun 2012 09:56:15 -0700
Message-ID: <CAKx_809XWQQ7CPnQxJiVNkaggR5E_iPOBLFUFzM08CovaO6vzw@mail.gmail.com>
From: nagarjuna vempati <nagpersonal@gmail.com>
To: freebsd-toolchain@freebsd.org
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Subject: Issue with KGDB setup. System freezes when it enters ddb
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Hello,

Can someone plese help me understand what is the problem?

After fresh disk installation of freeBSD9.0 AMD64 from disk, I copied
/usr/src/sys/am64/conf/GENERIC to KGDBKERNEL and added following lines to
the file

options         GDB
options         DDB
options         KDB_UNATTENDED
options         BREAK_TO_DEBUGGER
options         ALT_BREAK_TO_DEBUGGER

After this I rebuilt the Kernel and installed as below.

make buildworld
make buildkernel kernconf=KGDBKERNEL
make installkernel kernconf=KGDBKERNEL
Reboot into single user mode.
mergemaster -p
make installworld
mergemaster
Reboot.

After this to setup KGDB I am using following document as my reference.
http://chetanbl.blogspot.com/


To break into ddb I am trying issue sysctl debug.kdb.enter=1. Then the
system becomes unresponsive. Also, I tried to enter ddb at booting stage by
issuing boot -d command. Even then system becomes unresponsive.

I need to solve this problem ASAP. Can someone helpme?

Thanks,
Nag