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    Subject[PATCH 5.15 741/846] Documentation: refer to config RANDOMIZE_BASE for kernel address-space randomization
    Date
    From: Lukas Bulwahn <lukas.bulwahn@gmail.com>

    commit 82ca67321f55a8d1da6ac3ed611da3c32818bb37 upstream.

    The config RANDOMIZE_SLAB does not exist, the authors probably intended to
    refer to the config RANDOMIZE_BASE, which provides kernel address-space
    randomization. They probably just confused SLAB with BASE (these two
    four-letter words coincidentally share three common letters), as they also
    point out the config SLAB_FREELIST_RANDOM as further randomization within
    the same sentence.

    Fix the reference of the config for kernel address-space randomization to
    the config that provides that.

    Fixes: 6e88559470f5 ("Documentation: Add section about CPU vulnerabilities for Spectre")
    Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
    Link: https://lore.kernel.org/r/20211230171940.27558-1-lukas.bulwahn@gmail.com
    Signed-off-by: Jonathan Corbet <corbet@lwn.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    Documentation/admin-guide/hw-vuln/spectre.rst | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/Documentation/admin-guide/hw-vuln/spectre.rst
    +++ b/Documentation/admin-guide/hw-vuln/spectre.rst
    @@ -468,7 +468,7 @@ Spectre variant 2
    before invoking any firmware code to prevent Spectre variant 2 exploits
    using the firmware.

    - Using kernel address space randomization (CONFIG_RANDOMIZE_SLAB=y
    + Using kernel address space randomization (CONFIG_RANDOMIZE_BASE=y
    and CONFIG_SLAB_FREELIST_RANDOM=y in the kernel configuration) makes
    attacks on the kernel generally more difficult.


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