Re: [PATCH v2 12/32] mm/vmalloc: vmalloc_to_page() use pte_offset_kernel()

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On Mon, Jul 10, 2023 at 06:18:27PM +0100, Lorenzo Stoakes wrote:
> On Mon, Jul 10, 2023 at 03:42:31PM +0100, Mark Brown wrote:

> > We end up seeing NULL or otherwise bad pointer dereferences, the
> > specific error does vary a bit though it mostly appears to be in the
> > pinctrl code.  A bisect (full log below) identified this patch as
> > introducing the failure, nothing is jumping out at me about the patch
> > and it's not affecting everything so I'd not be surprised if it's just
> > unconvering some bug in the platform support but I'm not super familiar
> > with the code.

> Yeah seems likely. Do you have a .config you can share for this board? For
> a 64-bit device you'd expect that this change would probably be a nop.

It's definitely happening with arm64 defconfig, possibly with other
configs but that's the main one.

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