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Merge 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 the following issues:

   - a bogus BUG_ON in ixp4xx that can be triggered by a dst buffer that
     is an SG list.

   - the error handling in hwrngd may cause a crash in case of an error.

   - fix a race condition in qat registration when multiple devices are
     present"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: core - correct error check of kthread_run call
  crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer
  crypto: qat - Fix invalid synchronization between register/unregister sym algs
This commit is contained in:
Linus Torvalds 2015-08-03 10:53:58 -07:00
commit abeb4f572d
3 changed files with 17 additions and 10 deletions
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2
drivers/char/hw_random/core.c
View File

@ -429,7 +429,7 @@ static int hwrng_fillfn(void *unused)
static void start_khwrngd(void)
{
hwrng_fill = kthread_run(hwrng_fillfn, NULL, "hwrng");
if (hwrng_fill == ERR_PTR(-ENOMEM)) {
if (IS_ERR(hwrng_fill)) {
pr_err("hwrng_fill thread creation failed");
hwrng_fill = NULL;
}

1
drivers/crypto/ixp4xx_crypto.c
View File

@ -905,7 +905,6 @@ static int ablk_perform(struct ablkcipher_request *req, int encrypt)
crypt->mode |= NPE_OP_NOT_IN_PLACE;
/* This was never tested by Intel
* for more than one dst buffer, I think. */
BUG_ON(req->dst->length < nbytes);
req_ctx->dst = NULL;
if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
flags, DMA_FROM_DEVICE))

24
drivers/crypto/qat/qat_common/qat_algs.c
View File

@ -73,7 +73,8 @@
ICP_QAT_HW_CIPHER_KEY_CONVERT, \
ICP_QAT_HW_CIPHER_DECRYPT)
static atomic_t active_dev;
static DEFINE_MUTEX(algs_lock);
static unsigned int active_devs;
struct qat_alg_buf {
uint32_t len;
@ -1280,7 +1281,10 @@ static struct crypto_alg qat_algs[] = { {
int qat_algs_register(void)
{
if (atomic_add_return(1, &active_dev) == 1) {
int ret = 0;
mutex_lock(&algs_lock);
if (++active_devs == 1) {
int i;
for (i = 0; i < ARRAY_SIZE(qat_algs); i++)
@ -1289,21 +1293,25 @@ int qat_algs_register(void)
CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC :
CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
return crypto_register_algs(qat_algs, ARRAY_SIZE(qat_algs));
ret = crypto_register_algs(qat_algs, ARRAY_SIZE(qat_algs));
}
return 0;
mutex_unlock(&algs_lock);
return ret;
}
int qat_algs_unregister(void)
{
if (atomic_sub_return(1, &active_dev) == 0)
return crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
return 0;
int ret = 0;
mutex_lock(&algs_lock);
if (--active_devs == 0)
ret = crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
mutex_unlock(&algs_lock);
return ret;
}
int qat_algs_init(void)
{
atomic_set(&active_dev, 0);
crypto_get_default_rng();
return 0;
}