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0bd0a4a142
Use get_user() to retrieve the number of entries instead of allocating memory for 'init_vm' with the maximum size, copying 'cmd->data' to it, only to then read the actual entry count 'cpuid.nent' from the copy. Use memdup_user() to allocate just enough memory to fit all entries and to copy 'cmd->data' from userspace. Use struct_size() instead of manually calculating the number of bytes to allocate and copy. No functional changes intended. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://lore.kernel.org/r/20250916213129.2535597-2-thorsten.blum@linux.dev [sean: s/user_init_vm/user_data] Signed-off-by: Sean Christopherson <seanjc@google.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 reStructuredText 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.