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| author |   Harald Freudenberger <freude@linux.ibm.com> | 2019-09-05 09:38:17 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2019-09-05 15:18:15 +0200 |
| commit | 9e323d45ba94262620a073a3f9945ca927c07c71 (patch) | |
| tree | 25ca70f74555771f9d25d49c7b5d3ace613bd9e1 /arch/s390/crypto | |
| parent | vfio-ccw: fix error return code in vfio_ccw_sch_init() (diff) | |
| download | linux-dev-9e323d45ba94262620a073a3f9945ca927c07c71.tar.xz linux-dev-9e323d45ba94262620a073a3f9945ca927c07c71.zip | |
s390/crypto: xts-aes-s390 fix extra run-time crypto self tests finding
With 'extra run-time crypto self tests' enabled, the selftest
for s390-xts fails with
alg: skcipher: xts-aes-s390 encryption unexpectedly succeeded on
test vector "random: len=0 klen=64"; expected_error=-22,
cfg="random: inplace use_digest nosimd src_divs=[2.61%@+4006,
84.44%@+21, 1.55%@+13, 4.50%@+344, 4.26%@+21, 2.64%@+27]"
This special case with nbytes=0 is not handled correctly and this
fix now makes sure that -EINVAL is returned when there is en/decrypt
called with 0 bytes to en/decrypt.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/crypto')
| -rw-r--r-- | arch/s390/crypto/aes_s390.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index d00f84add5f4..6d2dbb5089d5 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -586,6 +586,9 @@ static int xts_aes_encrypt(struct blkcipher_desc *desc, struct s390_xts_ctx *xts_ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; + if (!nbytes) + return -EINVAL; + if (unlikely(!xts_ctx->fc)) return xts_fallback_encrypt(desc, dst, src, nbytes); @@ -600,6 +603,9 @@ static int xts_aes_decrypt(struct blkcipher_desc *desc, struct s390_xts_ctx *xts_ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; + if (!nbytes) + return -EINVAL; + if (unlikely(!xts_ctx->fc)) return xts_fallback_decrypt(desc, dst, src, nbytes); |