kdb on SMP

[Keith Owens]

On Fri, 21 Mar 2003 16:35:02 -0500 (EST), 
Hua Qin <qinhua at networks.ecse.rpi.edu> wrote:
>I downloaded 2.4.20 kernel from kernel.org, and patch
>kdb-v3.0-2.4.10-common and kdb-v3.0-2.4.20-i386 into the kernel.
>Then, I put this  kernel (compiled by gcc-.2.96)  to a SMP machine. set a
>break point by using bp,
>after the machine hit the break point, I use bt and cpu commands to check
>the status. Then I type bc 0 to clear that break point, and go to trying
>to leave kdb. But I never can go out, it always hit "Oops int3 ". I think
>it is the problem only happen on SMP machine, because another UP (unit
>processor) never has this problem.
>
>Today, I try v4.0 and other two patches kdb-smphdr-v4.0, same problem
>happened.
>
>Doese someone has some solutions about this.

Known race condition with no solution yet.  man Documentation/kdb/kdb_bp.man
and look for 'SMP'.