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| author | Jonathan Corbet <corbet@lwn.net> | 2016-11-19 00:13:41 +0100 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-11-19 00:13:41 +0100 |
| commit | 917fef6f7ee8b2fe852692ac49771342bfef9433 (patch) | |
| tree | b5932aab90d449841803b6f8679a4564ca2a6eaf /fs/crypto/crypto.c | |
| parent | kernel-doc: add support for one line inline struct member doc comments (diff) | |
| parent | Linux 4.9-rc4 (diff) | |
| download | linux-917fef6f7ee8b2fe852692ac49771342bfef9433.tar.xz linux-917fef6f7ee8b2fe852692ac49771342bfef9433.zip | |
Merge tag 'v4.9-rc4' into sound
Bring in -rc4 patches so I can successfully merge the sound doc changes.
Diffstat (limited to 'fs/crypto/crypto.c')
| -rw-r--r-- | fs/crypto/crypto.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c index 61057b7dbddb..98f87fe8f186 100644 --- a/fs/crypto/crypto.c +++ b/fs/crypto/crypto.c @@ -151,7 +151,10 @@ static int do_page_crypto(struct inode *inode, struct page *src_page, struct page *dest_page, gfp_t gfp_flags) { - u8 xts_tweak[FS_XTS_TWEAK_SIZE]; + struct { + __le64 index; + u8 padding[FS_XTS_TWEAK_SIZE - sizeof(__le64)]; + } xts_tweak; struct skcipher_request *req = NULL; DECLARE_FS_COMPLETION_RESULT(ecr); struct scatterlist dst, src; @@ -171,17 +174,15 @@ static int do_page_crypto(struct inode *inode, req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, page_crypt_complete, &ecr); - BUILD_BUG_ON(FS_XTS_TWEAK_SIZE < sizeof(index)); - memcpy(xts_tweak, &index, sizeof(index)); - memset(&xts_tweak[sizeof(index)], 0, - FS_XTS_TWEAK_SIZE - sizeof(index)); + BUILD_BUG_ON(sizeof(xts_tweak) != FS_XTS_TWEAK_SIZE); + xts_tweak.index = cpu_to_le64(index); + memset(xts_tweak.padding, 0, sizeof(xts_tweak.padding)); sg_init_table(&dst, 1); sg_set_page(&dst, dest_page, PAGE_SIZE, 0); sg_init_table(&src, 1); sg_set_page(&src, src_page, PAGE_SIZE, 0); - skcipher_request_set_crypt(req, &src, &dst, PAGE_SIZE, - xts_tweak); + skcipher_request_set_crypt(req, &src, &dst, PAGE_SIZE, &xts_tweak); if (rw == FS_DECRYPT) res = crypto_skcipher_decrypt(req); else |