mm: arm64: fix the out-of-bounds issue in contpte_clear_young_dirty_ptes

We are passing a huge nr to __clear_young_dirty_ptes() right now.  While
we should pass the number of pages, we are actually passing CONT_PTE_SIZE.
This is causing lots of crashes of MADV_FREE, panic oops could vary
everytime.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 89e86854fb0a ("mm/arm64: override clear_young_dirty_ptes() batch helper")
Signed-off-by: Barry Song <[email protected]>
Reviewed-by: Baolin Wang <[email protected]>
Acked-by: Lance Yang <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Acked-by: Chris Li <[email protected]>
Cc: Barry Song <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Jeff Xie <[email protected]>
Cc: Kefeng Wang <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Peter Xu <[email protected]>
Cc: Yang Shi <[email protected]>
Cc: Yin Fengwei <[email protected]>
Cc: Zach O'Keefe <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions