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KUnit assertions and expectations will print the values being tested. If these are pointers (e.g., KUNIT_EXPECT_PTR_EQ(test, a, b)), these pointers are currently printed with the %pK format specifier, which -- to prevent information leaks which may compromise, e.g., ASLR -- are often either hashed or replaced with ____ptrval____ or similar, making debugging tests difficult. By replacing %pK with %px as Documentation/core-api/printk-formats.rst suggests, we disable this security feature for KUnit assertions and expectations, allowing the actual pointer values to be printed. Given that KUnit is not intended for use in production kernels, and the pointers are only printed on failing tests, this seems like a worthwhile tradeoff. Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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.