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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-14 09:47:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-14 09:47:01 -0800 |
| commit | fee5429e028c414d80d036198db30454cfd91b7a (patch) | |
| tree | 485f37a974e4ab85339021c794d1782e2d761c5b /lib/string.c | |
| parent | 83e047c104aa95a8a683d6bd421df1551c17dbd2 (diff) | |
| parent | 96692a7305c49845e3cbf5a60cfcb207c5dc4030 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
"Here is the crypto update for 3.20:
- Added 192/256-bit key support to aesni GCM.
- Added MIPS OCTEON MD5 support.
- Fixed hwrng starvation and race conditions.
- Added note that memzero_explicit is not a subsitute for memset.
- Added user-space interface for crypto_rng.
- Misc fixes"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (71 commits)
crypto: tcrypt - do not allocate iv on stack for aead speed tests
crypto: testmgr - limit IV copy length in aead tests
crypto: tcrypt - fix buflen reminder calculation
crypto: testmgr - mark rfc4106(gcm(aes)) as fips_allowed
crypto: caam - fix resource clean-up on error path for caam_jr_init
crypto: caam - pair irq map and dispose in the same function
crypto: ccp - terminate ccp_support array with empty element
crypto: caam - remove unused local variable
crypto: caam - remove dead code
crypto: caam - don't emit ICV check failures to dmesg
hwrng: virtio - drop extra empty line
crypto: replace scatterwalk_sg_next with sg_next
crypto: atmel - Free memory in error path
crypto: doc - remove colons in comments
crypto: seqiv - Ensure that IV size is at least 8 bytes
crypto: cts - Weed out non-CBC algorithms
MAINTAINERS: add linux-crypto to hw random
crypto: cts - Remove bogus use of seqiv
crypto: qat - don't need qat_auth_state struct
crypto: algif_rng - fix sparse non static symbol warning
...
Diffstat (limited to 'lib/string.c')
| -rw-r--r-- | lib/string.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c index cdd97f431ae2..ce81aaec3839 100644 --- a/lib/string.c +++ b/lib/string.c @@ -596,6 +596,11 @@ EXPORT_SYMBOL(memset); * @s: Pointer to the start of the area. * @count: The size of the area. * + * Note: usually using memset() is just fine (!), but in cases + * where clearing out _local_ data at the end of a scope is + * necessary, memzero_explicit() should be used instead in + * order to prevent the compiler from optimising away zeroing. + * * memzero_explicit() doesn't need an arch-specific version as * it just invokes the one of memset() implicitly. */ |