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Linus Torvalds 7661809d49 mm: don't allow oversized kvmalloc() calls
'kvmalloc()' is a convenience function for people who want to do a
kmalloc() but fall back on vmalloc() if there aren't enough physically
contiguous pages, or if the allocation is larger than what kmalloc()
supports.

However, let's make sure it doesn't get _too_ easy to do crazy things
with it.  In particular, don't allow big allocations that could be due
to integer overflow or underflow.  So make sure the allocation size fits
in an 'int', to protect against trivial integer conversion issues.

Acked-by: Willy Tarreau <w@1wt.eu>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-02 09:47:01 -07:00
arch
block
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crypto
Documentation In addition to some ext4 bug fixes and cleanups, this cycle we add the 2021-09-02 09:37:09 -07:00
drivers iwlwifi: mvm: add rtnl_lock() in iwl_mvm_start_get_nvm() 2021-09-02 08:55:06 -07:00
fs In addition to some ext4 bug fixes and cleanups, this cycle we add the 2021-09-02 09:37:09 -07:00
include overlayfs update for 5.15 2021-09-02 09:21:27 -07:00
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mm mm: don't allow oversized kvmalloc() calls 2021-09-02 09:47:01 -07:00
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README

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.