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f932a8e482
Test that nullness elision works for common use cases. For example, we want to check that both constant scalar spills and STACK_ZERO functions. As well as when there's both const and non-const values of R2 leading up to a lookup. And obviously some bound checks. Particularly tricky are spills both smaller or larger than key size. For smaller, we need to ensure verifier doesn't let through a potential read into unchecked bytes. For larger, endianness comes into play, as the native endian value tracked in the verifier may not be the bytes the kernel would have read out of the key pointer. So check that we disallow both. Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Link: https://lore.kernel.org/r/f1dacaa777d4516a5476162e0ea549f7c3354d73.1736886479.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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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.