AuxXxilium/linux_dsm_epyc7002
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Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

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Pull crypto fixes from Herbert Xu:
 "This fixes a couple of places in the crypto code that were doing
  interruptible sleeps dangerously. They have been converted to use
  non-interruptible sleeps.

  This also fixes a bug in asymmetric_keys where it would trigger a
  use-after-free if a request returned EBUSY due to a full device queue"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: gcm - wait for crypto op not signal safe
  crypto: drbg - wait for crypto op not signal safe
  crypto: asymmetric_keys - handle EBUSY due to backlog correctly
This commit is contained in:
Linus Torvalds 2017-06-08 10:02:58 -07:00
commit d0aab7d4e9
3 changed files with 5 additions and 8 deletions
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2
crypto/asymmetric_keys/public_key.c
View File

@ -141,7 +141,7 @@ int public_key_verify_signature(const struct public_key *pkey,
* signature and returns that to us.
*/
ret = crypto_akcipher_verify(req);
if (ret == -EINPROGRESS) {
if ((ret == -EINPROGRESS) || (ret == -EBUSY)) {
wait_for_completion(&compl.completion);
ret = compl.err;
}

5
crypto/drbg.c
View File

@ -1767,9 +1767,8 @@ static int drbg_kcapi_sym_ctr(struct drbg_state *drbg,
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&drbg->ctr_completion);
if (!ret && !drbg->ctr_async_err) {
wait_for_completion(&drbg->ctr_completion);
if (!drbg->ctr_async_err) {
reinit_completion(&drbg->ctr_completion);
break;
}

6
crypto/gcm.c
View File

@ -152,10 +152,8 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
err = crypto_skcipher_encrypt(&data->req);
if (err == -EINPROGRESS || err == -EBUSY) {
err = wait_for_completion_interruptible(
&data->result.completion);
if (!err)
err = data->result.err;
wait_for_completion(&data->result.completion);
err = data->result.err;
}
if (err)