diff options
Diffstat (limited to 'arch/x86/crypto/aesni-intel_glue.c')
| -rw-r--r-- | arch/x86/crypto/aesni-intel_glue.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c index 2144e54a6c89..0fc961bef299 100644 --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -849,6 +849,8 @@ static int xts_crypt(struct skcipher_request *req, bool encrypt) return -EINVAL; err = skcipher_walk_virt(&walk, req, false); + if (!walk.nbytes) + return err; if (unlikely(tail > 0 && walk.nbytes < walk.total)) { int blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2; @@ -862,7 +864,10 @@ static int xts_crypt(struct skcipher_request *req, bool encrypt) skcipher_request_set_crypt(&subreq, req->src, req->dst, blocks * AES_BLOCK_SIZE, req->iv); req = &subreq; + err = skcipher_walk_virt(&walk, req, false); + if (err) + return err; } else { tail = 0; } |