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Date: Mon, 13 Apr 2020 17:15:48 -0400 From: Waiman Long <longman@...hat.com> To: Andrew Morton <akpm@...ux-foundation.org>, David Howells <dhowells@...hat.com>, Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>, James Morris <jmorris@...ei.org>, "Serge E. Hallyn" <serge@...lyn.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Joe Perches <joe@...ches.com>, Matthew Wilcox <willy@...radead.org>, David Rientjes <rientjes@...gle.com> Cc: linux-mm@...ck.org, keyrings@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org, linux-crypto@...r.kernel.org, linux-s390@...r.kernel.org, linux-pm@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org, linux-ppp@...r.kernel.org, wireguard@...ts.zx2c4.com, linux-wireless@...r.kernel.org, devel@...verdev.osuosl.org, linux-scsi@...r.kernel.org, target-devel@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, linux-fscrypt@...r.kernel.org, ecryptfs@...r.kernel.org, kasan-dev@...glegroups.com, linux-bluetooth@...r.kernel.org, linux-wpan@...r.kernel.org, linux-sctp@...r.kernel.org, linux-nfs@...r.kernel.org, tipc-discussion@...ts.sourceforge.net, cocci@...teme.lip6.fr, linux-security-module@...r.kernel.org, linux-integrity@...r.kernel.org, Waiman Long <longman@...hat.com> Subject: [PATCH 0/2] mm, treewide: Rename kzfree() to kfree_sensitive() 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
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