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ffe4dfe0ba
The Slab allocator randomization inside slab_common.c
uses the prandom_u32 PRNG. That was added to prevent attackers to obtain
information on the heap state.
However, this PRNG turned out to be weak, as noted in commit c51f8f88d7
To fix it, we have changed the invocation of prandom_u32_state to get_random_u32
to ensure the PRNG is strong.
Since a modulo operation is applied right after that,
in the Fisher-Yates shuffle, we used get_random_u32_below, to achieve uniformity.
Signed-off-by: David Keisar Schmidt <david.keisarschm@mail.huji.ac.il>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.