crypto: virtio/akcipher - Fix stack overflow on memcpy

In the Linux kernel, the following vulnerability has been resolved:

crypto: virtio/akcipher - Fix stack overflow on memcpy

sizeof(struct virtio_crypto_akcipher_session_para) is less than

sizeof(struct virtio_crypto_op_ctrl_req::u), copying more bytes from

stack variable leads stack overflow. Clang reports this issue by

commands:

make -j CC=clang-14 mrproper >/dev/null 2>&1

make -j O=/tmp/crypto-build CC=clang-14 allmodconfig >/dev/null 2>&1

make -j O=/tmp/crypto-build W=1 CC=clang-14 drivers/crypto/virtio/

virtio_crypto_akcipher_algs.o