Messages in this thread | | | Date | Tue, 9 Jul 2019 17:28:23 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] mm/hmm: Fix bad subpage pointer in try_to_unmap_one |
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On Tue, 9 Jul 2019 15:35:56 -0700 Ralph Campbell <rcampbell@nvidia.com> wrote:
> When migrating a ZONE device private page from device memory to system > memory, the subpage pointer is initialized from a swap pte which computes > an invalid page pointer. A kernel panic results such as: > > BUG: unable to handle page fault for address: ffffea1fffffffc8 > > Initialize subpage correctly before calling page_remove_rmap().
I think this is
Fixes: a5430dda8a3a1c ("mm/migrate: support un-addressable ZONE_DEVICE page in migration") Cc: stable
yes?
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