b78b7d59bd
SELinux checks whether VM_EXEC is set in the VM_DATA_DEFAULT_FLAGS during initialization and saves the result in default_noexec for use in its mmap and mprotect hook function implementations to decide whether to apply EXECMEM, EXECHEAP, EXECSTACK, and EXECMOD checks. Mark default_noexec as ro_after_init to prevent later clearing it and thereby disabling these checks. It is only set legitimately from init code. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
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.