Re: [PATCH v2 19/37] mm/gup: remove record_subpages()
David Hildenbrand <[email protected]>
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On 08.09.25 17:16, Mark Brown wrote: > On Mon, Sep 01, 2025 at 05:03:40PM +0200, David Hildenbrand wrote: >> We can just cleanup the code by calculating the #refs earlier, >> so we can just inline what remains of record_subpages(). >> >> Calculate the number of references/pages ahead of times, and record them >> only once all our tests passed. > > I'm seeing failures in kselftest-mm in -next on at least Raspberry Pi 4 > and Orion O6 which bisect to this patch. I'm seeing a NULL pointer > dereference during the GUP test (which isn't actually doing anything as > I'm just using a standard defconfig rather than one with the mm > fragment): On which -next label are you on? next-20250908 should no longer have that commit. -- Cheers David / dhildenb