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4a017c0163
The test for access watchpoints (hw_access_break_test) was broken (always failed) because the compiler optimized out the write to the static helper variable (hw_break_val2), as it is never read anywhere. This resulted in the target variable (hw_break_val) not being accessed and thus the breakpoint not being triggered. Remove the helper variable (hw_break_val2), and use READ_ONCE to force reading the target variable (hw_break_val). Signed-off-by: Florian Rommel <mail@florommel.de> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20240812085459.291741-1-mail@florommel.de Signed-off-by: Greg Kroah-Hartman <gregkh@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 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.