Re: memory range R/W triggered breakpoints in kernel ?

From: Benjamin LaHaise
Date: Sun Mar 05 2006 - 18:34:52 EST


On Mon, Mar 06, 2006 at 12:31:29AM +0100, Mateusz Berezecki wrote:
> Yes but again this is userspace. I was thinking about solution used
> back in the old days in SoftICE kernel level debugger.
> It had a BPR command (breakpoint on range) which could monitor
> up to 400000 bytes of memory range. Unfortunately for me this command
> works in very old versions of _that_ other OS.

If it is in userspace, then you don't need anything from the kernel.
mprotect() and catch the resulting SIGSEGV.

-ben
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