[regression drm/noveau] suspend to ram -> BOOM: exception RIP: drm_calc_vbltimestamp_from_scanoutpos+335

[Peter Zijlstra]

On Fri, Jul 14, 2017 at 05:58:18PM +0200, Mike Galbraith wrote:
> On Fri, 2017-07-14 at 17:50 +0200, Peter Zijlstra wrote:

> > Urgh, is for some mysterious reason the __bug_table section of modules
> > ending up in RO memory?
> > 
> > I forever get lost in that link magic :/
> 
> +1
> 
> drm.ko
>  20 __bug_table   00000630  0000000000000000  0000000000000000  0004bff3  2**0
>                   CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
> vmlinux
>  15 __bug_table   0000ba84  ffffffff81af26c0  0000000001af26c0  00cf26c0  2**0
>                   CONTENTS, ALLOC, LOAD, READONLY, DATA
> 
> Danged if I know... um um RELOC business mucks things up?

Argh, it shouldn't be READONLY for vmlinux either, but apparently that
is working for mysterious reasons.

Some architectures were in fact complaining that I broke that, and hence
patch:

b5effd3815cc ("debug: Fix __bug_table[] in arch linker scripts")

I think we need professional help with this linking stuff, but who to
ask?