Messages in this thread | | | Subject | Re: [PATCH] mm/hmm: Fix bad subpage pointer in try_to_unmap_one | From | Ralph Campbell <> | Date | Tue, 9 Jul 2019 18:24:57 -0700 |
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On 7/9/19 5:28 PM, Andrew Morton wrote: > 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? >
Yes. Can you add this or should I send a v2?
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