> If it's easily repeatable, doing a "git bisect" to see when it starts
> happening is the obvious big sledge-hammer thing to try. Even if you don't
> bisect all the way, just narrowing it down a bit more might help.
Sure, though I assumed it had already be tracked down at least partially
by Brian ;)
> Also, enabling DEBUG_PAGEALLOC might help, but that's not available on
> powerpc.
Remind me what is needed to get that working ? Unmapping of linear
mapping pages ? (I suppose I could do that if I also disable using large
pages for it).
> There's a raid1 use-after-free bugfix that I just merged and pushed out,
> but I doubt that one is relevant. But you might try to update.
>
> Linus
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