From: Andrei Botila <andrei.botila@xxxxxxx> Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx> Signed-off-by: Andrei Botila <andrei.botila@xxxxxxx> --- arch/s390/crypto/aes_s390.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index 73044634d342..bc8855f4b7d1 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -437,6 +437,9 @@ static int xts_aes_crypt(struct skcipher_request *req, unsigned long modifier) u8 init[16]; } xts_param; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL; -- 2.17.1
