Re: [syzbot] [kernel?] linux-next test error: WARNING: locking bug in change_page_attr_set_clr

[Lorenzo Stoakes (ARM)]

On Tue, Jul 21, 2026 at 06:53:23AM -0700, Borislav Petkov wrote:
> On Tue, Jul 21, 2026 at 01:39:45PM +0100, Lorenzo Stoakes (ARM) wrote:
> > OK so this is a screw up with merging.
> >
> > Two fixes are applied at once here and they are NOT compatible :)
> >
> > Denis's ([0]) holds a spin lock over the operation during which an older
> > revision of mine ([1] - current, probable next revision [2]) tries to take a
> > sleeping mmap lock, hence the report.
>
> Lemme guess: if those were merged by the same tree - tip - where arch/x86/
> changes belong, we would've caught it, right?
>
> Pff.

You mean the series that changes core mm and has strict dependencies on core mm
changes and solves issues elsewhere than x86 CPA, that one should have gone
through the x86 tree?

>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette

Thanks, Lorenzo