Re: Memory problems in schedule()

[Jeff Dike]

On Sun, Jun 05, 2005 at 09:01:19PM -0400, Vishal Patil wrote:
> 1) Whenever I select a process to run using my algorithm the kernel
> panics with "Segfault with no mm" basically the "mm" field of the
> task_struct that I selected is empty. I don't understand why this
> should happen, since I have just added code to select a process and
> haven't modified any memory related code in the schedule() function.

Start with a backtrace from the panic and debug it from there.

> 2) I am able to run the UMLfied kernel under gdb, however the execution
> never halts even though I set several breakpoints. Also these
> breakpoints have not been set in interrupt handling code and I have
> compiled the code with -g option.

UML and gdb versions?  tt or skas mode?

				Jeff
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