[PATCH v3 2.6.39-rc1-tip 9/26] 9: uprobes: mmap and fork hooks.

[Peter Zijlstra]

On Fri, 2011-04-01 at 20:04 +0530, Srikar Dronamraju wrote:
> +               if (vaddr > ULONG_MAX)
> +                       /*
> +                        * We cannot have a virtual address that is
> +                        * greater than ULONG_MAX
> +                        */
> +                       continue; 

I'm having trouble with those checks.. while they're not wrong they're
not correct either. Mostly the top address space is where the kernel
lives and on 32-on-64 compat the boundary is much lower still. Ideally
it'd be TASK_SIZE, but that doesn't work since it assumes you're testing
for the current task.