diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-05 19:38:42 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:33:01 +0200 |
| commit | cb316f473e43afc8dc00c87439c3caad3266fa4f (patch) | |
| tree | b050159e3e1512076625005674ce1e7a81c433fe | |
| parent | e865647cbdbdc63e684aebc1a8441ffaa81330b9 (diff) | |
f2fs crypto: add missing locking for keyring_key access
This patch adopts:
ext4 crypto: add missing locking for keyring_key access
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Conflicts:
fs/f2fs/crypto_key.c
| -rw-r--r-- | fs/f2fs/crypto_key.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/crypto_key.c b/fs/f2fs/crypto_key.c index 45f1807fe..4ef6b6ccf 100644 --- a/fs/f2fs/crypto_key.c +++ b/fs/f2fs/crypto_key.c @@ -202,9 +202,11 @@ retry: res = -ENOKEY; goto out; } + down_read(&keyring_key->sem); ukp = ((struct user_key_payload *)keyring_key->payload.data); if (ukp->datalen != sizeof(struct f2fs_encryption_key)) { res = -EINVAL; + up_read(&keyring_key->sem); goto out; } master_key = (struct f2fs_encryption_key *)ukp->data; @@ -215,10 +217,12 @@ retry: "f2fs: key size incorrect: %d\n", master_key->size); res = -ENOKEY; + up_read(&keyring_key->sem); goto out; } res = f2fs_derive_key_aes(ctx.nonce, master_key->raw, raw_key); + up_read(&keyring_key->sem); if (res) goto out; |