| From: |
| Johannes Weiner <hannes@cmpxchg.org> |
| To: |
| Andrew Morton <akpm@linux-foundation.org> |
| Subject: |
| [patch 0/7] kzfree() v2 |
| Date: |
| Tue, 17 Feb 2009 19:26:15 +0100 |
| Message-ID: |
| <20090217182615.897042724@cmpxchg.org> |
| Cc: |
| Pekka Enberg <penberg@cs.helsinki.fi>,
Chas Williams <chas@cmf.nrl.navy.mil>,
Evgeniy Polyakov <johnpol@2ka.mipt.ru>,
linux-mm@kvack.org,
linux-kernel@vger.kernel.org |
| Archive‑link: | |
Article |
This series introduces kzfree() and converts callsites which do
memset() + kzfree() explicitely.
The caller intention is to ensure that security-sensitive data are
cleared from slab objects before they are passed back to the
allocator.
This also removes the last modular ksize() user (crypto/api.c) again
by converting it to kzfree() which figures out the length of the
memory region to zero internally.
I left out drivers/w1/w1{,_int}.c and dropped the conversion of
drivers/atm/mpoa_caches.c in this iteration as I think they don't
strictly need the zeroeing and the memsetting should probably be
removed [ added Chas Williams and Evgeniy Polyakov to Cc ].
v2:
- EXPORT_SYMBOL(kzfree), thanks linker
- remove superfluous NULL checks, thanks Pekka
- mention `security' in the description
Hannes
arch/s390/crypto/prng.c | 3 +--
crypto/api.c | 5 +----
drivers/md/dm-crypt.c | 6 ++----
drivers/s390/crypto/zcrypt_pcixcc.c | 3 +--
drivers/usb/host/hwa-hc.c | 3 +--
drivers/usb/wusbcore/cbaf.c | 3 +--
fs/cifs/connect.c | 6 +-----
fs/cifs/misc.c | 10 ++--------
fs/ecryptfs/keystore.c | 3 +--
fs/ecryptfs/messaging.c | 3 +--
include/linux/slab.h | 1 +
mm/util.c | 20 ++++++++++++++++++++
12 files changed, 33 insertions(+), 33 deletions(-)
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