[lkml]   [2017]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: linux/master crashes on boot with KASAN=y
On Tue, 26 Dec 2017, Andrey Ryabinin wrote:
> On 12/24/2017 04:48 AM, Andy Lutomirski wrote:
> > Could this be #define MODULES_END KASAN_ROUND_DOWN(__fix_to_virt(...)) instead?
> >
> Actually, we could simply set fixed MODULES_END, as it was before
> f06bdd4001c2 ("x86/mm: Adapt MODULES_END based on fixmap section size").
> AFAICS, the whole point of f06bdd4001c2 was to move MODULES_END down if
> NR_CPUS is big. But since 92a0f81d8957 ("x86/cpu_entry_area: Move it out
> of the fixmap") cpu_entry_area is not in fixmap anymore. So it should be
> fine to set fixed MODULES_END.
> The only concern I have is 4.14 stable, where 21506525f ("x86/kasan/64:
> Teach KASAN about the cpu_entry_area") was backported. Is 92a0f81d8957
> ("x86/cpu_entry_area: Move it out of the fixmap") also a candidate for
> stable?
> If so, fixed MODULES_END seems like a better choice.

Yes, it's on the way there.



 \ /
  Last update: 2017-12-27 19:10    [W:0.049 / U:0.436 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site