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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-22 11:23:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-22 11:23:35 -0800 |
| commit | 391f2a16b74b95da2f05a607f53213fc8ed24b8e (patch) | |
| tree | 93bfd1906778d7ff24f6ce7c03f2e7c0f91caef5 /fs/ext4/crypto_key.c | |
| parent | d5ffdf8b4ac6e6db5702ba31870c476d5fa30660 (diff) | |
| parent | 68ce7bfcd995a8a393b1b14fa67dbc16fa3dc784 (diff) | |
| download | kernel_replicant_linux-391f2a16b74b95da2f05a607f53213fc8ed24b8e.tar.gz kernel_replicant_linux-391f2a16b74b95da2f05a607f53213fc8ed24b8e.tar.bz2 kernel_replicant_linux-391f2a16b74b95da2f05a607f53213fc8ed24b8e.zip | |
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Some locking and page fault bug fixes from Jan Kara, some ext4
encryption fixes from me, and Li Xi's Project Quota commits"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fs: clean up the flags definition in uapi/linux/fs.h
ext4: add FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
ext4: add project quota support
ext4: adds project ID support
ext4 crypto: simplify interfaces to directory entry insert functions
ext4 crypto: add missing locking for keyring_key access
ext4: use pre-zeroed blocks for DAX page faults
ext4: implement allocation of pre-zeroed blocks
ext4: provide ext4_issue_zeroout()
ext4: get rid of EXT4_GET_BLOCKS_NO_LOCK flag
ext4: document lock ordering
ext4: fix races of writeback with punch hole and zero range
ext4: fix races between buffered IO and collapse / insert range
ext4: move unlocked dio protection from ext4_alloc_file_blocks()
ext4: fix races between page faults and hole punching
Diffstat (limited to 'fs/ext4/crypto_key.c')
| -rw-r--r-- | fs/ext4/crypto_key.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c index c5882b36e558..9a16d1e75a49 100644 --- a/fs/ext4/crypto_key.c +++ b/fs/ext4/crypto_key.c @@ -213,9 +213,11 @@ retry: res = -ENOKEY; goto out; } + down_read(&keyring_key->sem); ukp = user_key_payload(keyring_key); if (ukp->datalen != sizeof(struct ext4_encryption_key)) { res = -EINVAL; + up_read(&keyring_key->sem); goto out; } master_key = (struct ext4_encryption_key *)ukp->data; @@ -226,10 +228,12 @@ retry: "ext4: key size incorrect: %d\n", master_key->size); res = -ENOKEY; + up_read(&keyring_key->sem); goto out; } res = ext4_derive_key_aes(ctx.nonce, master_key->raw, raw_key); + up_read(&keyring_key->sem); if (res) goto out; got_key: |