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cf51e129b9
It needs access_process_vm() if the traced process does not share mm with the caller. Solution is similar to what sparc64 does. Note that genregs32_set() is only ever called with pos being 0 or 32 * sizeof(u32) (the latter - as part of PTRACE_SETREGS handling). Cc: stable@kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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.