Re: [PATCH] mm: Fix memblock_free_late() when using deferred struct page

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Tue, 2026-02-10 at 16:32 +0200, Mike Rapoport wrote:
> Hi Ben,
> 
> On Tue, Feb 10, 2026 at 07:34:15PM +1100, Benjamin Herrenschmidt wrote:
> > On Tue, 2026-02-10 at 17:17 +1100, Benjamin Herrenschmidt wrote:
> > > 
> > > So ... that was a backport to 6.12.68 and my original patch is
> > > crashing
> > > the same way ! (it was working last week interestingly enough,
> > > something else got backported that gets in the way maybe ?).
> > > 
> > > I'm going to have to go back to digging :-(
> > > 
> > > I suspect the pages aren't reserved. I swear this was working :-)
> > 
> > So I rebuilt with a bit of extra debug prints, CONFIG_DEBUG_VM on, and
> > memblock=debug ... it's not hitting the reserved check, but it's also
> > not crashing the same way (still 6.12, I'll play with upstream again
> > later):
> > 
> >   .../...
> 
> Do you mind sending the entire log?

I misplaced it, but give me a few days to dig see if I can find what's going on.

Cheers
Ben.