diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-11-02 12:57:24 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-02 12:57:24 +0300 |
| commit | 3357b0d3c7323d73806571192e9f633bb6ba3d54 (patch) | |
| tree | a92fb225bfdda901783ad662a1fea0baddfb81e1 /security/keys/encrypted-keys/encrypted.c | |
| parent | 82c62fa0c49aa305104013cee4468772799bb391 (diff) | |
| parent | e27c310af5c05cf876d9cad006928076c27f54d4 (diff) | |
| download | linux-3357b0d3c7323d73806571192e9f633bb6ba3d54.tar.xz | |
Merge branch 'x86/mpx/prep' into x86/asm
Pick up some of the MPX commits that modify the syscall entry code,
to have a common base and to reduce conflicts.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'security/keys/encrypted-keys/encrypted.c')
| -rw-r--r-- | security/keys/encrypted-keys/encrypted.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c index 69855ba0d3b3..d92cbf9687c3 100644 --- a/security/keys/encrypted-keys/encrypted.c +++ b/security/keys/encrypted-keys/encrypted.c @@ -309,6 +309,13 @@ static struct key *request_user_key(const char *master_desc, const u8 **master_k down_read(&ukey->sem); upayload = user_key_payload_locked(ukey); + if (!upayload) { + /* key was revoked before we acquired its semaphore */ + up_read(&ukey->sem); + key_put(ukey); + ukey = ERR_PTR(-EKEYREVOKED); + goto error; + } *master_key = upayload->data; *master_keylen = upayload->datalen; error: @@ -847,7 +854,7 @@ static int encrypted_update(struct key *key, struct key_preparsed_payload *prep) size_t datalen = prep->datalen; int ret = 0; - if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) + if (key_is_negative(key)) return -ENOKEY; if (datalen <= 0 || datalen > 32767 || !prep->data) return -EINVAL; |