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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2012-10-26 15:06:12 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-11-23 11:14:27 +0100 |
| commit | 36eb2caa7bace31b7868a57f77cb148e58d1c9f9 (patch) | |
| tree | 440ee2134281ce81fec701f1f2ca4f2393f5659c /arch/s390/crypto/des_s390.c | |
| parent | ce1d801462ce75f9ba84e0bb32a05e1a7c881efe (diff) | |
| download | linux-36eb2caa7bace31b7868a57f77cb148e58d1c9f9.tar.gz linux-36eb2caa7bace31b7868a57f77cb148e58d1c9f9.tar.bz2 linux-36eb2caa7bace31b7868a57f77cb148e58d1c9f9.zip | |
s390/crypto: Don't panic after crypto instruction failures
Remove the BUG_ON's that check for failure or incomplete
results of the s390 hardware crypto instructions.
Rather report the errors as -EIO to the crypto layer.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/crypto/des_s390.c')
| -rw-r--r-- | arch/s390/crypto/des_s390.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c index b49fb96f4207..bcca01c9989d 100644 --- a/arch/s390/crypto/des_s390.c +++ b/arch/s390/crypto/des_s390.c @@ -94,7 +94,8 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, u8 *in = walk->src.virt.addr; ret = crypt_s390_km(func, key, out, in, n); - BUG_ON((ret < 0) || (ret != n)); + if (ret < 0 || ret != n) + return -EIO; nbytes &= DES_BLOCK_SIZE - 1; ret = blkcipher_walk_done(desc, walk, nbytes); @@ -120,7 +121,8 @@ static int cbc_desall_crypt(struct blkcipher_desc *desc, long func, u8 *in = walk->src.virt.addr; ret = crypt_s390_kmc(func, iv, out, in, n); - BUG_ON((ret < 0) || (ret != n)); + if (ret < 0 || ret != n) + return -EIO; nbytes &= DES_BLOCK_SIZE - 1; ret = blkcipher_walk_done(desc, walk, nbytes); @@ -386,7 +388,8 @@ static int ctr_desall_crypt(struct blkcipher_desc *desc, long func, crypto_inc(ctrblk + i, DES_BLOCK_SIZE); } ret = crypt_s390_kmctr(func, ctx->key, out, in, n, ctrblk); - BUG_ON((ret < 0) || (ret != n)); + if (ret < 0 || ret != n) + return -EIO; if (n > DES_BLOCK_SIZE) memcpy(ctrblk, ctrblk + n - DES_BLOCK_SIZE, DES_BLOCK_SIZE); @@ -404,7 +407,8 @@ static int ctr_desall_crypt(struct blkcipher_desc *desc, long func, in = walk->src.virt.addr; ret = crypt_s390_kmctr(func, ctx->key, buf, in, DES_BLOCK_SIZE, ctrblk); - BUG_ON(ret < 0 || ret != DES_BLOCK_SIZE); + if (ret < 0 || ret != DES_BLOCK_SIZE) + return -EIO; memcpy(out, buf, nbytes); crypto_inc(ctrblk, DES_BLOCK_SIZE); ret = blkcipher_walk_done(desc, walk, 0); |