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77212d3a76
UBSAN was complaining about a shift by 64 in set_inc_field(). This only happened when the value being shifted was 0, so in theory should be harmless - a shift by 64 (or register width) should logically give a result of 0, but CPUs will in practice leave the input unchanged when the number of bits to shift by wraps - and since our input here is 0, the output is still what we want. But, it's still undefined behaviour and we need our UBSAN output to be clean, so it needs to be fixed. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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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.