virtio-snd: check for invalid param shift operands

virtio-snd: check for invalid param shift operands

When setting the parameters of a PCM stream, we compute the bit flag
with the format and rate values as shift operand to check if they are
set in supported_formats and supported_rates.

If the guest provides a format/rate value which when shifting 1 results
in a value bigger than the number of bits in
supported_formats/supported_rates, we must report an error.

Previously, this ended up triggering the not reached assertions later
when converting to internal QEMU values.

Reported-by: Zheyu Ma <zheyuma97@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2416
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <virtio-snd-fuzz-2416-fix-v1-manos.pitsidianakis@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>