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    Subject[RFC PATCH v16 0/6] mm: security: ro protection for dynamic data
    Date
    This patch-set introduces the possibility of protecting memory that has
    been allocated dynamically.

    The memory is managed in pools: when a memory pool is turned into R/O,
    all the memory that is part of it, will become R/O.

    A R/O pool can be destroyed, to recover its memory, but it cannot be
    turned back into R/W mode.

    This is intentional. This feature is meant for data that doesn't need
    further modifications after initialization.

    However the data might need to be released, for example as part of module
    unloading.
    To do this, the memory must first be freed, then the pool can be destroyed.

    An example is provided, in the form of self-testing.

    Changes since v15:
    [http://www.openwall.com/lists/kernel-hardening/2018/02/11/4]

    - Fixed remaining broken comments
    - Fixed remaining broken "Returns" instead of "Return:" in kernel-doc
    - Converted "Return:" values to lists
    - Fixed SPDX license statements

    Igor Stoppa (6):
    genalloc: track beginning of allocations
    genalloc: selftest
    struct page: add field for vm_struct
    Protectable Memory
    Pmalloc: self-test
    Documentation for Pmalloc

    Documentation/core-api/index.rst | 1 +
    Documentation/core-api/pmalloc.rst | 114 +++++++
    include/linux/genalloc-selftest.h | 26 ++
    include/linux/genalloc.h | 7 +-
    include/linux/mm_types.h | 1 +
    include/linux/pmalloc.h | 242 ++++++++++++++
    include/linux/vmalloc.h | 1 +
    init/main.c | 2 +
    lib/Kconfig | 15 +
    lib/Makefile | 1 +
    lib/genalloc-selftest.c | 400 ++++++++++++++++++++++
    lib/genalloc.c | 658 +++++++++++++++++++++++++++----------
    mm/Kconfig | 15 +
    mm/Makefile | 2 +
    mm/pmalloc-selftest.c | 64 ++++
    mm/pmalloc-selftest.h | 24 ++
    mm/pmalloc.c | 501 ++++++++++++++++++++++++++++
    mm/usercopy.c | 33 ++
    mm/vmalloc.c | 18 +-
    19 files changed, 1950 insertions(+), 175 deletions(-)
    create mode 100644 Documentation/core-api/pmalloc.rst
    create mode 100644 include/linux/genalloc-selftest.h
    create mode 100644 include/linux/pmalloc.h
    create mode 100644 lib/genalloc-selftest.c
    create mode 100644 mm/pmalloc-selftest.c
    create mode 100644 mm/pmalloc-selftest.h
    create mode 100644 mm/pmalloc.c

    --
    2.14.1

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