linux-stable/drivers/crypto/ccp
Waiman Long 453431a549 mm, treewide: rename kzfree() to kfree_sensitive()
As said by Linus:

  A symmetric naming is only helpful if it implies symmetries in use.
  Otherwise it's actively misleading.

  In "kzalloc()", the z is meaningful and an important part of what the
  caller wants.

  In "kzfree()", the z is actively detrimental, because maybe in the
  future we really _might_ want to use that "memfill(0xdeadbeef)" or
  something. The "zero" part of the interface isn't even _relevant_.

The main reason that kzfree() exists is to clear sensitive information
that should not be leaked to other future users of the same memory
objects.

Rename kzfree() to kfree_sensitive() to follow the example of the recently
added kvfree_sensitive() and make the intention of the API more explicit.
In addition, memzero_explicit() is used to clear the memory to make sure
that it won't get optimized away by the compiler.

The renaming is done by using the command sequence:

  git grep -w --name-only kzfree |\
  xargs sed -i 's/kzfree/kfree_sensitive/'

followed by some editing of the kfree_sensitive() kerneldoc and adding
a kzfree backward compatibility macro in slab.h.

[akpm@linux-foundation.org: fs/crypto/inline_crypt.c needs linux/slab.h]
[akpm@linux-foundation.org: fix fs/crypto/inline_crypt.c some more]

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Joe Perches <joe@perches.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: "Jason A . Donenfeld" <Jason@zx2c4.com>
Link: http://lkml.kernel.org/r/20200616154311.12314-3-longman@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:22 -07:00
..
ccp-crypto-aes-cmac.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto-aes-galois.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto-aes-xts.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto-aes.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto-des3.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto-main.c crypto: ccp - switch from ablkcipher to skcipher 2019-11-17 09:02:45 +08:00
ccp-crypto-rsa.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
ccp-crypto-sha.c crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY 2020-07-16 21:49:10 +10:00
ccp-crypto.h crypto: ccp - permit asynchronous skcipher as fallback 2020-07-16 21:49:03 +10:00
ccp-debugfs.c crypto: ccp - Switch to SPDX license identifiers 2019-07-03 22:13:12 +08:00
ccp-dev-v3.c crypto: ccp - set max RSA modulus size for v3 platform devices as well 2019-12-11 16:36:55 +08:00
ccp-dev-v5.c crypto: ccp - Fix sparse warnings 2020-07-09 18:25:22 +10:00
ccp-dev.c crypto: ccp - use generic power management 2020-07-31 18:25:26 +10:00
ccp-dev.h crypto: ccp - Fix sparse warnings 2020-07-09 18:25:22 +10:00
ccp-dmaengine.c crypto: ccp - fix uninitialized list head 2019-10-26 02:10:00 +11:00
ccp-ops.c crypto: ccp - Fix sparse warnings 2020-07-09 18:25:22 +10:00
Kconfig crypto: ccp -- don't "select" CONFIG_DMADEVICES 2020-04-16 16:49:22 +10:00
Makefile crypto: ccp - add TEE support for Raven Ridge 2019-12-20 14:58:32 +08:00
psp-dev.c crypto: ccp - Cleanup sp_dev_master in psp_dev_destroy() 2020-03-12 23:00:12 +11:00
psp-dev.h crypto: ccp - add TEE support for Raven Ridge 2019-12-20 14:58:32 +08:00
sev-dev.c crypto: ccp - Fix sparse warnings in sev-dev 2020-06-15 17:38:53 +10:00
sev-dev.h crypto: ccp - move SEV vdata to a dedicated data structure 2019-12-20 14:58:32 +08:00
sp-dev.c crypto: ccp - use generic power management 2020-07-31 18:25:26 +10:00
sp-dev.h crypto: ccp - use generic power management 2020-07-31 18:25:26 +10:00
sp-pci.c crypto: ccp - use generic power management 2020-07-31 18:25:26 +10:00
sp-platform.c crypto: ccp - use generic power management 2020-07-31 18:25:26 +10:00
tee-dev.c tee: amdtee: check TEE status during driver initialization 2020-01-04 13:49:51 +08:00
tee-dev.h crypto: ccp - provide in-kernel API to submit TEE commands 2019-12-20 14:58:32 +08:00