C/C++ compilers commonly have warnings for narrowing conversions, and separate warnings for mixing signed/unsigned conversions for same-sized values. While som

C/C++ compilers commonly have warnings for narrowing conversions, and separate warnings for mixing signed/unsigned conversions for same-sized values. While some folks aren't too fussed about warnings like this, those folks generally aren't writing secure code like kernels. I'm very surprised that kind of conversion was permitted in the code.