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-rw-r--r--security/keys/key.c3
-rw-r--r--security/keys/keyring.c1
-rw-r--r--security/keys/request_key.c4
3 files changed, 6 insertions, 2 deletions
diff --git a/security/keys/key.c b/security/keys/key.c
index d331ea9ef380..55d110f0aced 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -557,9 +557,10 @@ int key_reject_and_link(struct key *key,
if (!test_bit(KEY_FLAG_INSTANTIATED, &key->flags)) {
/* mark the key as being negatively instantiated */
atomic_inc(&key->user->nikeys);
+ key->type_data.reject_error = -error;
+ smp_wmb();
set_bit(KEY_FLAG_NEGATIVE, &key->flags);
set_bit(KEY_FLAG_INSTANTIATED, &key->flags);
- key->type_data.reject_error = -error;
now = current_kernel_time();
key->expiry = now.tv_sec + timeout;
key_schedule_gc(key->expiry + key_gc_delay);
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 9b6f6e09b50c..8c05ebd7203d 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -551,6 +551,7 @@ static int keyring_search_iterator(const void *object, void *iterator_data)
if (ctx->flags & KEYRING_SEARCH_DO_STATE_CHECK) {
/* we set a different error code if we pass a negative key */
if (kflags & (1 << KEY_FLAG_NEGATIVE)) {
+ smp_rmb();
ctx->result = ERR_PTR(key->type_data.reject_error);
kleave(" = %d [neg]", ctx->skipped_ret);
goto skipped;
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index df94827103d0..381411941cc1 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -596,8 +596,10 @@ int wait_for_key_construction(struct key *key, bool intr)
intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
if (ret < 0)
return ret;
- if (test_bit(KEY_FLAG_NEGATIVE, &key->flags))
+ if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) {
+ smp_rmb();
return key->type_data.reject_error;
+ }
return key_validate(key);
}
EXPORT_SYMBOL(wait_for_key_construction);