Re: [MIPS] TLB handler fix for vmalloc'ed addresses

[Maxim Uvarov <muvarov@ru.mvista.com>]

Maxim Uvarov wrote:
> > > > > }
> > > > So your test case allocates vmalloc memory but never touches it.
> > > Yes, it is so. Bug occurs on rmmod this module. (Module does not free 
> > > memory
> > > allocated with vmalloc().
> > Nor does it stop the thread on exit or avoid unloading.  So panicing is
> > expected.
> Ralf, I'm sorry for misunderstanding.  Original kernel does panic in 
> this situation. In my patch it went to panic with

Original kernel does  _NOT_ panic.


> +        else if (pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_k))
> +                goto no_context;
>
> Actually it was the reason of this patch.
>
> But looks like we need go immediately to no_context for 64 bit and do 
> not do this checks.
> Maxim.