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    SubjectRe: [PATCH] mm/ksm: Fix a null pointer dereference
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    > The find_mergeable_vma can return NULL. In this case, it leads
    > to crash when we access vma->vm_mm(which's offset is 0x40) in

    I suggest to improve the commit message.

    * Wording alternative:
    to a crash when we access vma->vm_mm (its offset is 0x40) in

    * Can a function name be nicer than the information “at 0000000000000040”
    in the patch subject?

    * Would you like to add the tag “Fixes” to the change description?

    Regards,
    Markus

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