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CONFIG_PAGE_TABLE_CHECK: Check for invalid mappings in user page tables

General informations

The Linux kernel configuration item CONFIG_PAGE_TABLE_CHECK:

Help text

Check that anonymous page is not being mapped twice with read write permissions. Check that anonymous and file pages are not being erroneously shared. Since the checking is performed at the time entries are added and removed to user page tables, leaking, corruption and double mapping problems are detected synchronously.

If unsure say "n".

Hardware

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