dfae8e00f8
If the guest passes us a bogus negative length for an iovec, fail EINVAL rather than proceeding blindly forward. This fixes some of the error cases tests for readv and writev in the LTP. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>