linux-fscrypt.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Waiman Long <longman@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	David Howells <dhowells@redhat.com>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	James Morris <jmorris@namei.org>,
	"Serge E. Hallyn" <serge@hallyn.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Joe Perches <joe@perches.com>,
	Matthew Wilcox <willy@infradead.org>,
	David Rientjes <rientjes@google.com>
Cc: linux-mm@kvack.org, keyrings@vger.kernel.org,
	linux-kernel@vger.kernel.org, x86@kernel.org,
	linux-crypto@vger.kernel.org, linux-s390@vger.kernel.org,
	linux-pm@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-amlogic@lists.infradead.org,
	linux-mediatek@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org,
	virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org,
	linux-ppp@vger.kernel.org, wireguard@lists.zx2c4.com,
	linux-wireless@vger.kernel.org, devel@driverdev.osuosl.org,
	linux-scsi@vger.kernel.org, target-devel@vger.kernel.org,
	linux-btrfs@vger.kernel.org, linux-cifs@vger.kernel.org,
	samba-technical@lists.samba.org, linux-fscrypt@vger.kernel.org,
	ecryptfs@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org,
	linux-sctp@vger.kernel.org, linux-nfs@vger.kernel.org,
	tipc-discussion@lists.sourceforge.net, cocci@systeme.lip6.fr,
	linux-security-module@vger.kernel.org,
	linux-integrity@vger.kernel.org, Waiman Long <longman@redhat.com>
Subject: [PATCH 0/2] mm, treewide: Rename kzfree() to kfree_sensitive()
Date: Mon, 13 Apr 2020 17:15:48 -0400	[thread overview]
Message-ID: <20200413211550.8307-1-longman@redhat.com> (raw)

This patchset makes a global rename of the kzfree() to kfree_sensitive()
to highlight the fact buffer clearing is only needed if the data objects
contain sensitive information like encrpytion key. The fact that kzfree()
uses memset() to do the clearing isn't totally safe either as compiler
may compile out the clearing in their optimizer. Instead, the new
kfree_sensitive() uses memzero_explicit() which won't get compiled out.

Waiman Long (2):
  mm, treewide: Rename kzfree() to kfree_sensitive()
  crypto: Remove unnecessary memzero_explicit()

 arch/s390/crypto/prng.c                       |  4 +--
 arch/x86/power/hibernate.c                    |  2 +-
 crypto/adiantum.c                             |  2 +-
 crypto/ahash.c                                |  4 +--
 crypto/api.c                                  |  2 +-
 crypto/asymmetric_keys/verify_pefile.c        |  4 +--
 crypto/deflate.c                              |  2 +-
 crypto/drbg.c                                 | 10 +++---
 crypto/ecc.c                                  |  8 ++---
 crypto/ecdh.c                                 |  2 +-
 crypto/gcm.c                                  |  2 +-
 crypto/gf128mul.c                             |  4 +--
 crypto/jitterentropy-kcapi.c                  |  2 +-
 crypto/rng.c                                  |  2 +-
 crypto/rsa-pkcs1pad.c                         |  6 ++--
 crypto/seqiv.c                                |  2 +-
 crypto/shash.c                                |  2 +-
 crypto/skcipher.c                             |  2 +-
 crypto/testmgr.c                              |  6 ++--
 crypto/zstd.c                                 |  2 +-
 .../allwinner/sun8i-ce/sun8i-ce-cipher.c      | 17 +++-------
 .../allwinner/sun8i-ss/sun8i-ss-cipher.c      | 18 +++-------
 drivers/crypto/amlogic/amlogic-gxl-cipher.c   | 14 +++-----
 drivers/crypto/atmel-ecc.c                    |  2 +-
 drivers/crypto/caam/caampkc.c                 | 28 +++++++--------
 drivers/crypto/cavium/cpt/cptvf_main.c        |  6 ++--
 drivers/crypto/cavium/cpt/cptvf_reqmanager.c  | 12 +++----
 drivers/crypto/cavium/nitrox/nitrox_lib.c     |  4 +--
 drivers/crypto/cavium/zip/zip_crypto.c        |  6 ++--
 drivers/crypto/ccp/ccp-crypto-rsa.c           |  6 ++--
 drivers/crypto/ccree/cc_aead.c                |  4 +--
 drivers/crypto/ccree/cc_buffer_mgr.c          |  4 +--
 drivers/crypto/ccree/cc_cipher.c              |  6 ++--
 drivers/crypto/ccree/cc_hash.c                |  8 ++---
 drivers/crypto/ccree/cc_request_mgr.c         |  2 +-
 drivers/crypto/inside-secure/safexcel_hash.c  |  3 +-
 drivers/crypto/marvell/cesa/hash.c            |  2 +-
 .../crypto/marvell/octeontx/otx_cptvf_main.c  |  6 ++--
 .../marvell/octeontx/otx_cptvf_reqmgr.h       |  2 +-
 drivers/crypto/mediatek/mtk-aes.c             |  2 +-
 drivers/crypto/nx/nx.c                        |  4 +--
 drivers/crypto/virtio/virtio_crypto_algs.c    | 12 +++----
 drivers/crypto/virtio/virtio_crypto_core.c    |  2 +-
 drivers/md/dm-crypt.c                         | 34 +++++++++----------
 drivers/md/dm-integrity.c                     |  6 ++--
 drivers/misc/ibmvmc.c                         |  6 ++--
 .../hisilicon/hns3/hns3pf/hclge_mbx.c         |  2 +-
 .../net/ethernet/intel/ixgbe/ixgbe_ipsec.c    |  6 ++--
 drivers/net/ppp/ppp_mppe.c                    |  6 ++--
 drivers/net/wireguard/noise.c                 |  4 +--
 drivers/net/wireguard/peer.c                  |  2 +-
 drivers/net/wireless/intel/iwlwifi/pcie/rx.c  |  2 +-
 .../net/wireless/intel/iwlwifi/pcie/tx-gen2.c |  6 ++--
 drivers/net/wireless/intel/iwlwifi/pcie/tx.c  |  6 ++--
 drivers/net/wireless/intersil/orinoco/wext.c  |  4 +--
 drivers/s390/crypto/ap_bus.h                  |  4 +--
 drivers/staging/ks7010/ks_hostif.c            |  2 +-
 drivers/staging/rtl8723bs/core/rtw_security.c |  2 +-
 drivers/staging/wlan-ng/p80211netdev.c        |  2 +-
 drivers/target/iscsi/iscsi_target_auth.c      |  2 +-
 fs/btrfs/ioctl.c                              |  2 +-
 fs/cifs/cifsencrypt.c                         |  2 +-
 fs/cifs/connect.c                             | 10 +++---
 fs/cifs/dfs_cache.c                           |  2 +-
 fs/cifs/misc.c                                |  8 ++---
 fs/crypto/keyring.c                           |  6 ++--
 fs/crypto/keysetup_v1.c                       |  4 +--
 fs/ecryptfs/keystore.c                        |  4 +--
 fs/ecryptfs/messaging.c                       |  2 +-
 include/crypto/aead.h                         |  2 +-
 include/crypto/akcipher.h                     |  2 +-
 include/crypto/gf128mul.h                     |  2 +-
 include/crypto/hash.h                         |  2 +-
 include/crypto/internal/acompress.h           |  2 +-
 include/crypto/kpp.h                          |  2 +-
 include/crypto/skcipher.h                     |  2 +-
 include/linux/slab.h                          |  2 +-
 lib/mpi/mpiutil.c                             |  6 ++--
 lib/test_kasan.c                              |  6 ++--
 mm/slab_common.c                              | 10 +++---
 net/atm/mpoa_caches.c                         |  4 +--
 net/bluetooth/ecdh_helper.c                   |  6 ++--
 net/bluetooth/smp.c                           | 24 ++++++-------
 net/core/sock.c                               |  2 +-
 net/ipv4/tcp_fastopen.c                       |  2 +-
 net/mac80211/aead_api.c                       |  4 +--
 net/mac80211/aes_gmac.c                       |  2 +-
 net/mac80211/key.c                            |  2 +-
 net/mac802154/llsec.c                         | 20 +++++------
 net/sctp/auth.c                               |  2 +-
 net/sctp/socket.c                             |  2 +-
 net/sunrpc/auth_gss/gss_krb5_crypto.c         |  4 +--
 net/sunrpc/auth_gss/gss_krb5_keys.c           |  6 ++--
 net/sunrpc/auth_gss/gss_krb5_mech.c           |  2 +-
 net/tipc/crypto.c                             | 10 +++---
 net/wireless/core.c                           |  2 +-
 net/wireless/ibss.c                           |  4 +--
 net/wireless/lib80211_crypt_tkip.c            |  2 +-
 net/wireless/lib80211_crypt_wep.c             |  2 +-
 net/wireless/nl80211.c                        | 24 ++++++-------
 net/wireless/sme.c                            |  6 ++--
 net/wireless/util.c                           |  2 +-
 net/wireless/wext-sme.c                       |  2 +-
 scripts/coccinelle/free/devm_free.cocci       |  4 +--
 scripts/coccinelle/free/ifnullfree.cocci      |  4 +--
 scripts/coccinelle/free/kfree.cocci           |  6 ++--
 scripts/coccinelle/free/kfreeaddr.cocci       |  2 +-
 security/apparmor/domain.c                    |  4 +--
 security/apparmor/include/file.h              |  2 +-
 security/apparmor/policy.c                    | 24 ++++++-------
 security/apparmor/policy_ns.c                 |  6 ++--
 security/apparmor/policy_unpack.c             | 14 ++++----
 security/keys/big_key.c                       |  6 ++--
 security/keys/dh.c                            | 14 ++++----
 security/keys/encrypted-keys/encrypted.c      | 14 ++++----
 security/keys/trusted-keys/trusted_tpm1.c     | 34 +++++++++----------
 security/keys/user_defined.c                  |  6 ++--
 117 files changed, 332 insertions(+), 358 deletions(-)

-- 
2.18.1


             reply	other threads:[~2020-04-13 21:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-13 21:15 Waiman Long [this message]
2020-04-13 21:15 ` [PATCH 1/2] mm, treewide: Rename kzfree() to kfree_sensitive() Waiman Long
2020-04-14  0:29   ` David Rientjes
2020-04-14  8:32   ` Jason A. Donenfeld
2020-04-14  9:01   ` Michal Hocko
2020-04-14 12:48   ` David Sterba
2020-04-14 18:26     ` Waiman Long
2020-04-15  5:01   ` Johannes Weiner
2020-06-15 18:07   ` Dan Carpenter
2020-06-15 18:39     ` Waiman Long
2020-04-13 21:15 ` [PATCH 2/2] crypto: Remove unnecessary memzero_explicit() Waiman Long
2020-04-13 21:31   ` Joe Perches
2020-04-13 21:52     ` Waiman Long
2020-04-13 22:28 ` [PATCH v2 " Waiman Long
2020-04-14  6:08   ` Christophe Leroy
2020-04-14 16:24     ` Waiman Long
2020-04-14 19:16       ` Michal Suchánek
2020-04-14 19:37         ` Waiman Long
2020-04-14 19:44           ` Joe Perches
2020-04-14 13:06 ` [PATCH 1/2] mm, treewide: Rename kzfree() to kfree_sensitive() David Howells

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200413211550.8307-1-longman@redhat.com \
    --to=longman@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=cocci@systeme.lip6.fr \
    --cc=devel@driverdev.osuosl.org \
    --cc=dhowells@redhat.com \
    --cc=ecryptfs@vger.kernel.org \
    --cc=intel-wired-lan@lists.osuosl.org \
    --cc=jarkko.sakkinen@linux.intel.com \
    --cc=jmorris@namei.org \
    --cc=joe@perches.com \
    --cc=kasan-dev@googlegroups.com \
    --cc=keyrings@vger.kernel.org \
    --cc=linux-amlogic@lists.infradead.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-bluetooth@vger.kernel.org \
    --cc=linux-btrfs@vger.kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-fscrypt@vger.kernel.org \
    --cc=linux-integrity@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-ppp@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=linux-sctp@vger.kernel.org \
    --cc=linux-security-module@vger.kernel.org \
    --cc=linux-stm32@st-md-mailman.stormreply.com \
    --cc=linux-wireless@vger.kernel.org \
    --cc=linux-wpan@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=netdev@vger.kernel.org \
    --cc=rientjes@google.com \
    --cc=samba-technical@lists.samba.org \
    --cc=serge@hallyn.com \
    --cc=target-devel@vger.kernel.org \
    --cc=tipc-discussion@lists.sourceforge.net \
    --cc=torvalds@linux-foundation.org \
    --cc=virtualization@lists.linux-foundation.org \
    --cc=willy@infradead.org \
    --cc=wireguard@lists.zx2c4.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).