Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  integrity: digital signature config option name change
  lib: Removed MPILIB, MPILIB_EXTRA, and SIGNATURE prompts
  lib: MPILIB Kconfig description update
  lib: digital signature dependency fix
  lib: digital signature config option name change
  encrypted-keys: fix rcu and sparse messages
  keys: fix trusted/encrypted keys sparse rcu_assign_pointer messages
  KEYS: Add missing smp_rmb() primitives to the keyring search code
  TOMOYO: Accept \000 as a valid character.
  security: update MAINTAINERS file with new git repo

9 files changed, 34 insertions, 22 deletions

diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig
index d384ea921482..5bd1cc1b4a54 100644
--- a/security/integrity/Kconfig
+++ b/security/integrity/Kconfig
@@ -3,11 +3,11 @@ config INTEGRITY
 	def_bool y
 	depends on IMA || EVM
 
-config INTEGRITY_DIGSIG
+config INTEGRITY_SIGNATURE
 	boolean "Digital signature verification using multiple keyrings"
 	depends on INTEGRITY && KEYS
 	default n
-	select DIGSIG
+	select SIGNATURE
 	help
 	  This option enables digital signature verification support
 	  using multiple keyrings. It defines separate keyrings for each
diff --git a/security/integrity/Makefile b/security/integrity/Makefile
index bece0563ee5e..d43799cc14f6 100644
--- a/security/integrity/Makefile
+++ b/security/integrity/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-$(CONFIG_INTEGRITY) += integrity.o
-obj-$(CONFIG_INTEGRITY_DIGSIG) += digsig.o
+obj-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o
 
 integrity-y := iint.o
 
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index 4da6ba81d153..7a25ecec5aaa 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -51,7 +51,7 @@ struct integrity_iint_cache *integrity_iint_find(struct inode *inode);
 #define INTEGRITY_KEYRING_IMA		2
 #define INTEGRITY_KEYRING_MAX		3
 
-#ifdef CONFIG_INTEGRITY_DIGSIG
+#ifdef CONFIG_INTEGRITY_SIGNATURE
 
 int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
 					const char *digest, int digestlen);
@@ -65,7 +65,7 @@ static inline int integrity_digsig_verify(const unsigned int id,
 	return -EOPNOTSUPP;
 }
 
-#endif /* CONFIG_INTEGRITY_DIGSIG */
+#endif /* CONFIG_INTEGRITY_SIGNATURE */
 
 /* set during initialization */
 extern int iint_initialized;
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index 41144f71d615..2d1bb8af7696 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -314,7 +314,7 @@ static struct key *request_user_key(const char *master_desc, u8 **master_key,
 		goto error;
 
 	down_read(&ukey->sem);
-	upayload = rcu_dereference(ukey->payload.data);
+	upayload = ukey->payload.data;
 	*master_key = upayload->data;
 	*master_keylen = upayload->datalen;
 error:
@@ -810,7 +810,7 @@ static int encrypted_instantiate(struct key *key, const void *data,
 		goto out;
 	}
 
-	rcu_assign_pointer(key->payload.data, epayload);
+	rcu_assign_keypointer(key, epayload);
 out:
 	kfree(datablob);
 	return ret;
@@ -874,7 +874,7 @@ static int encrypted_update(struct key *key, const void *data, size_t datalen)
 	memcpy(new_epayload->payload_data, epayload->payload_data,
 	       epayload->payload_datalen);
 
-	rcu_assign_pointer(key->payload.data, new_epayload);
+	rcu_assign_keypointer(key, new_epayload);
 	call_rcu(&epayload->rcu, encrypted_rcu_free);
 out:
 	kfree(buf);
diff --git a/security/keys/encrypted-keys/masterkey_trusted.c b/security/keys/encrypted-keys/masterkey_trusted.c
index df87272e3f51..013f7e5d3a2f 100644
--- a/security/keys/encrypted-keys/masterkey_trusted.c
+++ b/security/keys/encrypted-keys/masterkey_trusted.c
@@ -18,6 +18,8 @@
 #include <linux/module.h>
 #include <linux/err.h>
 #include <keys/trusted-type.h>
+#include <keys/encrypted-type.h>
+#include "encrypted.h"
 
 /*
  * request_trusted_key - request the trusted key
@@ -37,7 +39,7 @@ struct key *request_trusted_key(const char *trusted_desc,
 		goto error;
 
 	down_read(&tkey->sem);
-	tpayload = rcu_dereference(tkey->payload.data);
+	tpayload = tkey->payload.data;
 	*master_key = tpayload->key;
 	*master_keylen = tpayload->key_len;
 error:
diff --git a/security/keys/gc.c b/security/keys/gc.c
index bf4d8da5a795..a42b45531aac 100644
--- a/security/keys/gc.c
+++ b/security/keys/gc.c
@@ -145,7 +145,9 @@ static void key_gc_keyring(struct key *keyring, time_t limit)
 	if (!klist)
 		goto unlock_dont_gc;
 
-	for (loop = klist->nkeys - 1; loop >= 0; loop--) {
+	loop = klist->nkeys;
+	smp_rmb();
+	for (loop--; loop >= 0; loop--) {
 		key = klist->keys[loop];
 		if (test_bit(KEY_FLAG_DEAD, &key->flags) ||
 		    (key->expiry > 0 && key->expiry <= limit))
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 37a7f3b28852..d605f75292e4 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -319,7 +319,7 @@ key_ref_t keyring_search_aux(key_ref_t keyring_ref,
 	struct key *keyring, *key;
 	key_ref_t key_ref;
 	long err;
-	int sp, kix;
+	int sp, nkeys, kix;
 
 	keyring = key_ref_to_ptr(keyring_ref);
 	possessed = is_key_possessed(keyring_ref);
@@ -380,7 +380,9 @@ descend:
 		goto not_this_keyring;
 
 	/* iterate through the keys in this keyring first */
-	for (kix = 0; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (kix = 0; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 		kflags = key->flags;
 
@@ -421,7 +423,9 @@ descend:
 	/* search through the keyrings nested in this one */
 	kix = 0;
 ascend:
-	for (; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 		if (key->type != &key_type_keyring)
 			continue;
@@ -515,7 +519,7 @@ key_ref_t __keyring_search_one(key_ref_t keyring_ref,
 	struct keyring_list *klist;
 	unsigned long possessed;
 	struct key *keyring, *key;
-	int loop;
+	int nkeys, loop;
 
 	keyring = key_ref_to_ptr(keyring_ref);
 	possessed = is_key_possessed(keyring_ref);
@@ -524,7 +528,9 @@ key_ref_t __keyring_search_one(key_ref_t keyring_ref,
 
 	klist = rcu_dereference(keyring->payload.subscriptions);
 	if (klist) {
-		for (loop = 0; loop < klist->nkeys; loop++) {
+		nkeys = klist->nkeys;
+		smp_rmb();
+		for (loop = 0; loop < nkeys ; loop++) {
 			key = klist->keys[loop];
 
 			if (key->type == ktype &&
@@ -622,7 +628,7 @@ static int keyring_detect_cycle(struct key *A, struct key *B)
 
 	struct keyring_list *keylist;
 	struct key *subtree, *key;
-	int sp, kix, ret;
+	int sp, nkeys, kix, ret;
 
 	rcu_read_lock();
 
@@ -645,7 +651,9 @@ descend:
 
 ascend:
 	/* iterate through the remaining keys in this keyring */
-	for (; kix < keylist->nkeys; kix++) {
+	nkeys = keylist->nkeys;
+	smp_rmb();
+	for (; kix < nkeys; kix++) {
 		key = keylist->keys[kix];
 
 		if (key == A)
diff --git a/security/keys/trusted.c b/security/keys/trusted.c
index 0ed5fdf238a2..2d5d041f2049 100644
--- a/security/keys/trusted.c
+++ b/security/keys/trusted.c
@@ -993,7 +993,7 @@ out:
 	kfree(datablob);
 	kfree(options);
 	if (!ret)
-		rcu_assign_pointer(key->payload.data, payload);
+		rcu_assign_keypointer(key, payload);
 	else
 		kfree(payload);
 	return ret;
@@ -1067,7 +1067,7 @@ static int trusted_update(struct key *key, const void *data, size_t datalen)
 			goto out;
 		}
 	}
-	rcu_assign_pointer(key->payload.data, new_p);
+	rcu_assign_keypointer(key, new_p);
 	call_rcu(&p->rcu, trusted_rcu_free);
 out:
 	kfree(datablob);
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index 4a9b4b2eb755..867558c98334 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -492,13 +492,13 @@ static bool tomoyo_correct_word2(const char *string, size_t len)
 				if (d < '0' || d > '7' || e < '0' || e > '7')
 					break;
 				c = tomoyo_make_byte(c, d, e);
-				if (tomoyo_invalid(c))
-					continue; /* pattern is not \000 */
+				if (c <= ' ' || c >= 127)
+					continue;
 			}
 			goto out;
 		} else if (in_repetition && c == '/') {
 			goto out;
-		} else if (tomoyo_invalid(c)) {
+		} else if (c <= ' ' || c >= 127) {
 			goto out;
 		}
 	}