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c2efa5387c
For reasons I cannot understand, m68k moves the start of the stack frame for consecutive calls to the same function if the function's test variable is larger than 8 bytes. This was only happening for the char array test (obviously), so adjust the length of the string for m68k only. I want the array size to be longer than "unsigned long" for every given architecture, so the other remain unchanged. Additionally adjust the error message to be a bit more clear about what's happened, and move the KUNIT check outside of the consecutive calls to minimize what happens between them. Reported-by: Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/lkml/a0d10d50-2720-4ecd-a2c6-c2c5e5aeee65@roeck-us.net/ Tested-by: Guenter Roeck <linux@roeck-us.net> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Closes: https://lore.kernel.org/r/CAMuHMdX_g1tbiUL9PUQdqaegrEzCNN3GtbSvSBFYAL4TzvstFg@mail.gmail.com Closes: https://lore.kernel.org/r/CAMuHMdW6N40+0gGQ+LSrN64Mo4A0-ELAm0pR3gWQ0mNanyBuUQ@mail.gmail.com Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/all/a4bf4063-194f-4740-9c1d-88f9ab38b778@roeck-us.net Signed-off-by: Kees Cook <keescook@chromium.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 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.