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Kees Cook authored
In the quest to remove all stack VLA usage from the kernel[1], this moves the math for cookies calculation into macros and allocates a fixed size array for the maximum number of cookies and adds a runtime sanity check. (Note that the size was always fixed, but just hidden from the compiler.) [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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