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

Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.9:

  API:
   - The crypto engine code now supports hashes.

  Algorithms:
   - Allow keys >= 2048 bits in FIPS mode for RSA.

  Drivers:
   - Memory overwrite fix for vmx ghash.
   - Add support for building ARM sha1-neon in Thumb2 mode.
   - Reenable ARM ghash-ce code by adding import/export.
   - Reenable img-hash by adding import/export.
   - Add support for multiple cores in omap-aes.
   - Add little-endian support for sha1-powerpc.
   - Add Cavium HWRNG driver for ThunderX SoC"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (137 commits)
  crypto: caam - treat SGT address pointer as u64
  crypto: ccp - Make syslog errors human-readable
  crypto: ccp - clean up data structure
  crypto: vmx - Ensure ghash-generic is enabled
  crypto: testmgr - add guard to dst buffer for ahash_export
  crypto: caam - Unmap region obtained by of_iomap
  crypto: sha1-powerpc - little-endian support
  crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
  crypto: vmx - Fix memory corruption caused by p8_ghash
  crypto: ghash-generic - move common definitions to a new header file
  crypto: caam - fix sg dump
  hwrng: omap - Only fail if pm_runtime_get_sync returns < 0
  crypto: omap-sham - shrink the internal buffer size
  crypto: omap-sham - add support for export/import
  crypto: omap-sham - convert driver logic to use sgs for data xmit
  crypto: omap-sham - change the DMA threshold value to a define
  crypto: omap-sham - add support functions for sg based data handling
  crypto: omap-sham - rename sgl to sgl_tmp for deprecation
  crypto: omap-sham - align algorithms on word offset
  crypto: omap-sham - add context export/import stubs
  ...

1 files changed, 15 insertions, 16 deletions

diff --git a/crypto/drbg.c b/crypto/drbg.c
index f752da3a..fb33f7d3 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1178,12 +1178,16 @@ static inline int drbg_alloc_state(struct drbg_state *drbg)
 		goto err;
 
 	drbg->Vbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL);
-	if (!drbg->Vbuf)
+	if (!drbg->Vbuf) {
+		ret = -ENOMEM;
 		goto fini;
+	}
 	drbg->V = PTR_ALIGN(drbg->Vbuf, ret + 1);
 	drbg->Cbuf = kmalloc(drbg_statelen(drbg) + ret, GFP_KERNEL);
-	if (!drbg->Cbuf)
+	if (!drbg->Cbuf) {
+		ret = -ENOMEM;
 		goto fini;
+	}
 	drbg->C = PTR_ALIGN(drbg->Cbuf, ret + 1);
 	/* scratchpad is only generated for CTR and Hash */
 	if (drbg->core->flags & DRBG_HMAC)
@@ -1199,8 +1203,10 @@ static inline int drbg_alloc_state(struct drbg_state *drbg)
 
 	if (0 < sb_size) {
 		drbg->scratchpadbuf = kzalloc(sb_size + ret, GFP_KERNEL);
-		if (!drbg->scratchpadbuf)
+		if (!drbg->scratchpadbuf) {
+			ret = -ENOMEM;
 			goto fini;
+		}
 		drbg->scratchpad = PTR_ALIGN(drbg->scratchpadbuf, ret + 1);
 	}
 
@@ -1917,6 +1923,8 @@ static inline int __init drbg_healthcheck_sanity(void)
 		return -ENOMEM;
 
 	mutex_init(&drbg->drbg_mutex);
+	drbg->core = &drbg_cores[coreref];
+	drbg->reseed_threshold = drbg_max_requests(drbg);
 
 	/*
 	 * if the following tests fail, it is likely that there is a buffer
@@ -1926,12 +1934,6 @@ static inline int __init drbg_healthcheck_sanity(void)
 	 * grave bug.
 	 */
 
-	/* get a valid instance of DRBG for following tests */
-	ret = drbg_instantiate(drbg, NULL, coreref, pr);
-	if (ret) {
-		rc = ret;
-		goto outbuf;
-	}
 	max_addtllen = drbg_max_addtl(drbg);
 	max_request_bytes = drbg_max_request_bytes(drbg);
 	drbg_string_fill(&addtl, buf, max_addtllen + 1);
@@ -1941,10 +1943,9 @@ static inline int __init drbg_healthcheck_sanity(void)
 	/* overflow max_bits */
 	len = drbg_generate(drbg, buf, (max_request_bytes + 1), NULL);
 	BUG_ON(0 < len);
-	drbg_uninstantiate(drbg);
 
 	/* overflow max addtllen with personalization string */
-	ret = drbg_instantiate(drbg, &addtl, coreref, pr);
+	ret = drbg_seed(drbg, &addtl, false);
 	BUG_ON(0 == ret);
 	/* all tests passed */
 	rc = 0;
@@ -1952,9 +1953,7 @@ static inline int __init drbg_healthcheck_sanity(void)
 	pr_devel("DRBG: Sanity tests for failure code paths successfully "
 		 "completed\n");
 
-	drbg_uninstantiate(drbg);
-outbuf:
-	kzfree(drbg);
+	kfree(drbg);
 	return rc;
 }
 
@@ -2006,7 +2005,7 @@ static int __init drbg_init(void)
 {
 	unsigned int i = 0; /* pointer to drbg_algs */
 	unsigned int j = 0; /* pointer to drbg_cores */
-	int ret = -EFAULT;
+	int ret;
 
 	ret = drbg_healthcheck_sanity();
 	if (ret)
@@ -2016,7 +2015,7 @@ static int __init drbg_init(void)
 		pr_info("DRBG: Cannot register all DRBG types"
 			"(slots needed: %zu, slots available: %zu)\n",
 			ARRAY_SIZE(drbg_cores) * 2, ARRAY_SIZE(drbg_algs));
-		return ret;
+		return -EFAULT;
 	}
 
 	/*