David Tolnay [Mon, 7 Jan 2019 22:36:11 +0000 (14:36 -0800)]
hwrng: virtio - Avoid repeated init of completion
The virtio-rng driver uses a completion called have_data to wait for a
virtio read to be fulfilled by the hypervisor. The completion is reset
before placing a buffer on the virtio queue and completed by the virtio
callback once data has been written into the buffer.
Prior to this commit, the driver called init_completion on this
completion both during probe as well as when registering virtio buffers
as part of a hwrng read operation. The second of these init_completion
calls should instead be reinit_completion because the have_data
completion has already been inited by probe. As described in
Documentation/scheduler/completion.txt, "Calling init_completion() twice
on the same completion object is most likely a bug".
This bug was present in the initial implementation of virtio-rng in
f7f510ec1957 ("virtio: An entropy device, as suggested by hpa"). Back
then the have_data completion was a single static completion rather than
a member of one of potentially multiple virtrng_info structs as
implemented later by
08e53fbdb85c ("virtio-rng: support multiple
virtio-rng devices"). The original driver incorrectly used
init_completion rather than INIT_COMPLETION to reset have_data during
read.
Tested by running `head -c48 /dev/random | hexdump` within crosvm, the
Chrome OS virtual machine monitor, and confirming that the virtio-rng
driver successfully produces random bytes from the host.
Signed-off-by: David Tolnay <dtolnay@gmail.com>
Tested-by: David Tolnay <dtolnay@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Xiongfeng Wang [Fri, 18 Jan 2019 05:58:15 +0000 (13:58 +0800)]
crypto: chacha20poly1305 - use template array registering API to simplify the code
Use crypto template array registering API to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Xiongfeng Wang [Fri, 18 Jan 2019 05:58:14 +0000 (13:58 +0800)]
crypto: ctr - use template array registering API to simplify the code
Use crypto template array registering API to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Xiongfeng Wang [Fri, 18 Jan 2019 05:58:13 +0000 (13:58 +0800)]
crypto: gcm - use template array registering API to simplify the code
Use crypto template array registering API to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Xiongfeng Wang [Fri, 18 Jan 2019 05:58:12 +0000 (13:58 +0800)]
crypto: ccm - use template array registering API to simplify the code
Use crypto template array registering API to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Xiongfeng Wang [Fri, 18 Jan 2019 05:58:11 +0000 (13:58 +0800)]
crypto: api - add a helper to (un)register a array of templates
This patch add a helper to (un)register a array of templates. The
following patches will use this helper to simplify the code.
Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Thomas Gleixner [Thu, 17 Jan 2019 23:14:21 +0000 (00:14 +0100)]
crypto: morus - Convert to SPDX license identifiers
The license boiler plate text is not ideal for machine parsing. The kernel
uses SPDX license identifiers for that purpose, which replace the boiler
plate text.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ondrej Mosnacek <omosnacek@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Thomas Gleixner [Thu, 17 Jan 2019 23:14:20 +0000 (00:14 +0100)]
crypto: aegis - Convert to SPDX license identifiers
The license boiler plate text is not ideal for machine parsing. The kernel
uses SPDX license identifiers for that purpose, which replace the boiler
plate text.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ondrej Mosnacek <omosnacek@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Thomas Gleixner [Thu, 17 Jan 2019 23:14:19 +0000 (00:14 +0100)]
crypto: morus - Cleanup license mess
Precise and non-ambiguous license information is important. The recently
added morus header files have a SPDX license identifier, which is nice, but
at the same time they have a contradictionary license boiler plate text.
SPDX-License-Identifier: GPL-2.0
versus
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version
Oh well.
As the other morus related files are licensed under the GPL v2 or later,
it's assumed that the boiler plate code is correct, but the SPDX license
identifier is wrong.
Fix the SPDX identifier and remove the boiler plate as it is redundant.
Fixes: 56e8e57fc3a7 ("crypto: morus - Add common SIMD glue code for MORUS")
Fixes: 396be41f16fd ("crypto: morus - Add generic MORUS AEAD implementations")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ondrej Mosnacek <omosnacek@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Thomas Gleixner [Thu, 17 Jan 2019 23:14:18 +0000 (00:14 +0100)]
crypto: aegis - Cleanup license mess
Precise and non-ambiguous license information is important. The recently
added aegis header file has a SPDX license identifier, which is nice, but
at the same time it has a contradictionary license boiler plate text.
SPDX-License-Identifier: GPL-2.0
versus
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version
Oh well.
As the other aegis related files are licensed under the GPL v2 or later,
it's assumed that the boiler plate code is correct, but the SPDX license
identifier is wrong.
Fix the SPDX identifier and remove the boiler plate as it is redundant.
Fixes: f606a88e5823 ("crypto: aegis - Add generic AEGIS AEAD implementations")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ondrej Mosnacek <omosnacek@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Atul Gupta [Thu, 17 Jan 2019 17:19:19 +0000 (09:19 -0800)]
crypto: chelsio - Inline single pdu only
Inline single pdu else take co-pro path
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Atul Gupta [Thu, 17 Jan 2019 17:18:35 +0000 (09:18 -0800)]
crypto: chelsio - avoid using sa_entry imm
use is_eth_imm to determine immediate data than use sa_entry
field which is common for tunnel and not per skb.
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Gilad Ben-Yossef [Tue, 15 Jan 2019 13:43:17 +0000 (15:43 +0200)]
crypto: ccree - don't copy zero size ciphertext
For decryption in CBC mode we need to save the last ciphertext block
for use as the next IV. However, we were trying to do this also with
zero sized ciphertext resulting in a panic.
Fix this by only doing the copy if the ciphertext length is at least
of IV size.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Gilad Ben-Yossef [Tue, 15 Jan 2019 13:43:16 +0000 (15:43 +0200)]
crypto: ccree - shared irq lines are not a bug
The ccree driver was logging an error if it got an interrupt but
HW indicated nothing to do as might happen if sharing an irq line.
Remove the error as this is normal and we already have a debug
print for the IRR register value.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Gilad Ben-Yossef [Tue, 15 Jan 2019 13:43:15 +0000 (15:43 +0200)]
crypto: ccree - unmap buffer before copying IV
We were copying the last ciphertext block into the IV field
for CBC before removing the DMA mapping of the output buffer
with the result of the buffer sometime being out-of-sync cache
wise and were getting intermittent cases of bad output IV.
Fix it by moving the DMA buffer unmapping before the copy.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Fixes: 00904aa0cd59 ("crypto: ccree - fix iv handling")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hadar Gat [Tue, 15 Jan 2019 13:43:14 +0000 (15:43 +0200)]
crypto: ccree - remove legacy leftover
Remove legacy code no longer in use.
Signed-off-by: Hadar Gat <hadar.gat@arm.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hadar Gat [Tue, 15 Jan 2019 13:43:13 +0000 (15:43 +0200)]
crypto: ccree - fix free of unallocated mlli buffer
In cc_unmap_aead_request(), call dma_pool_free() for mlli buffer only
if an item is allocated from the pool and not always if there is a
pool allocated.
This fixes a kernel panic when trying to free a non-allocated item.
Cc: stable@vger.kernel.org
Signed-off-by: Hadar Gat <hadar.gat@arm.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hadar Gat [Tue, 15 Jan 2019 13:43:12 +0000 (15:43 +0200)]
crypto: ccree - add error message
Add error message in case of too many mlli entries.
Signed-off-by: Hadar Gat <hadar.gat@arm.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hadar Gat [Tue, 15 Jan 2019 13:43:11 +0000 (15:43 +0200)]
crypto: ccree - improve error handling
pass the returned error code to the higher level functions
Signed-off-by: Hadar Gat <hadar.gat@arm.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 13 Jan 2019 23:32:28 +0000 (15:32 -0800)]
crypto: testmgr - unify the AEAD encryption and decryption test vectors
Currently testmgr has separate encryption and decryption test vectors
for AEADs. That's massively redundant, since usually the decryption
tests are identical to the encryption tests, just with the input/result
swapped. And for some algorithms it was forgotten to add decryption
test vectors, so for them currently only encryption is being tested.
Therefore, eliminate the redundancy by removing the AEAD decryption test
vectors and updating testmgr to test both AEAD encryption and decryption
using what used to be the encryption test vectors. Naming is adjusted
accordingly: each aead_testvec now has a 'ptext' (plaintext), 'plen'
(plaintext length), 'ctext' (ciphertext), and 'clen' (ciphertext length)
instead of an 'input', 'ilen', 'result', and 'rlen'. "Ciphertext" here
refers to the full ciphertext, including the authentication tag.
For now the scatterlist divisions are just given for the plaintext
length, not also the ciphertext length. For decryption, the last
scatterlist element is just extended by the authentication tag length.
In total, this removes over 5000 lines from testmgr.h, with no reduction
in test coverage since prior patches already copied the few unique
decryption test vectors into the encryption test vectors.
The testmgr.h portion of this patch was automatically generated using
the following awk script, except that I also manually updated the
definition of 'struct aead_testvec' and fixed the location of the
comment describing the AEGIS-128 test vectors.
BEGIN { OTHER = 0; ENCVEC = 1; DECVEC = 2; DECVEC_TAIL = 3; mode = OTHER }
/^static const struct aead_testvec.*_enc_/ { sub("_enc", ""); mode = ENCVEC }
/^static const struct aead_testvec.*_dec_/ { mode = DECVEC }
mode == ENCVEC {
sub(/\.input[[:space:]]*=/, ".ptext\t=")
sub(/\.result[[:space:]]*=/, ".ctext\t=")
sub(/\.ilen[[:space:]]*=/, ".plen\t=")
sub(/\.rlen[[:space:]]*=/, ".clen\t=")
print
}
mode == DECVEC_TAIL && /[^[:space:]]/ { mode = OTHER }
mode == OTHER { print }
mode == ENCVEC && /^};/ { mode = OTHER }
mode == DECVEC && /^};/ { mode = DECVEC_TAIL }
Note that git's default diff algorithm gets confused by the testmgr.h
portion of this patch, and reports too many lines added and removed.
It's better viewed with 'git diff --minimal' (or 'git show --minimal'),
which reports "2 files changed, 1235 insertions(+), 6491 deletions(-)".
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 13 Jan 2019 23:32:27 +0000 (15:32 -0800)]
crypto: testmgr - add rfc4543(gcm(aes)) decryption test to encryption tests
One "rfc4543(gcm(aes))" decryption test vector doesn't exactly match any of the
encryption test vectors with input and result swapped. In preparation
for removing the AEAD decryption test vectors and testing AEAD
decryption using the encryption test vectors, add this to the encryption
test vectors, so we don't lose any test coverage.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 13 Jan 2019 23:32:26 +0000 (15:32 -0800)]
crypto: testmgr - add gcm(aes) decryption tests to encryption tests
Some "gcm(aes)" decryption test vectors don't exactly match any of the
encryption test vectors with input and result swapped. In preparation
for removing the AEAD decryption test vectors and testing AEAD
decryption using the encryption test vectors, add these to the
encryption test vectors, so we don't lose any test coverage.
In the case of the chunked test vector, I truncated the last scatterlist
element to the end of the plaintext.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 13 Jan 2019 23:32:25 +0000 (15:32 -0800)]
crypto: testmgr - add ccm(aes) decryption tests to encryption tests
Some "ccm(aes)" decryption test vectors don't exactly match any of the
encryption test vectors with input and result swapped. In preparation
for removing the AEAD decryption test vectors and testing AEAD
decryption using the encryption test vectors, add these to the
encryption test vectors, so we don't lose any test coverage.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 13 Jan 2019 23:32:24 +0000 (15:32 -0800)]
crypto: testmgr - skip AEAD encryption test vectors with novrfy set
In preparation for unifying the AEAD encryption and decryption test
vectors, skip AEAD test vectors with the 'novrfy' (verification failure
expected) flag set when testing encryption rather than decryption.
These test vectors only make sense for decryption.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:18:02 +0000 (12:18 -0800)]
crypto: af_alg - remove redundant initializations of sk_family
sk_alloc() already sets sock::sk_family to PF_ALG which is passed as the
'family' argument, so there's no need to set it again.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:18:01 +0000 (12:18 -0800)]
crypto: af_alg - use list_for_each_entry() in af_alg_count_tsgl()
af_alg_count_tsgl() iterates through a list without modifying it, so use
list_for_each_entry() rather than list_for_each_entry_safe(). Also make
the pointers 'const' to make it clearer that nothing is modified.
No actual change in behavior.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:18:00 +0000 (12:18 -0800)]
crypto: af_alg - make some functions static
Some exported functions in af_alg.c aren't used outside of that file.
Therefore, un-export them and make them 'static'.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:59 +0000 (12:17 -0800)]
crypto: stat - remove unused mutex
crypto_cfg_mutex in crypto_user_stat.c is unused. Remove it.
Cc: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:58 +0000 (12:17 -0800)]
crypto: tgr192 - fix unaligned memory access
Fix an unaligned memory access in tgr192_transform() by using the
unaligned access helpers.
Fixes: 06ace7a9bafe ("[CRYPTO] Use standard byte order macros wherever possible")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:57 +0000 (12:17 -0800)]
crypto: x86/aesni-gcm - make 'struct aesni_gcm_tfm_s' static const
Add missing static keywords to fix the following sparse warnings:
arch/x86/crypto/aesni-intel_glue.c:197:24: warning: symbol 'aesni_gcm_tfm_sse' was not declared. Should it be static?
arch/x86/crypto/aesni-intel_glue.c:246:24: warning: symbol 'aesni_gcm_tfm_avx_gen2' was not declared. Should it be static?
arch/x86/crypto/aesni-intel_glue.c:291:24: warning: symbol 'aesni_gcm_tfm_avx_gen4' was not declared. Should it be static?
I also made the affected structures 'const', and adjusted the
indentation in the struct definition to not be insane.
Cc: Dave Watson <davejwatson@fb.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:56 +0000 (12:17 -0800)]
crypto: user - forward declare crypto_nlsk
Move the declaration of crypto_nlsk into internal/cryptouser.h. This
fixes the following sparse warning:
crypto/crypto_user_base.c:41:13: warning: symbol 'crypto_nlsk' was not declared. Should it be static?
Cc: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:55 +0000 (12:17 -0800)]
crypto: testmgr - handle endianness correctly in alg_test_crc32c()
The crc32c context is in CPU endianness, whereas the final digest is
little endian. alg_test_crc32c() got this mixed up. Fix it.
The test passes both before and after, but this patch fixes the
following sparse warning:
crypto/testmgr.c:1912:24: warning: cast to restricted __le32
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:54 +0000 (12:17 -0800)]
crypto: streebog - use correct endianness type
streebog_uint512::qword needs to be __le64, not u64. This fixes a large
number of sparse warnings:
crypto/streebog_generic.c:25:9: warning: incorrect type in initializer (different base types)
crypto/streebog_generic.c:25:9: expected unsigned long long
crypto/streebog_generic.c:25:9: got restricted __le64 [usertype]
[omitted many similar warnings]
No actual change in behavior.
Cc: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:53 +0000 (12:17 -0800)]
crypto: rsa-pkcs1pad - include <crypto/internal/rsa.h>
Include internal/rsa.h in rsa-pkcs1pad.c to get the declaration of
rsa_pkcs1pad_tmpl. This fixes the following sparse warning:
crypto/rsa-pkcs1pad.c:698:24: warning: symbol 'rsa_pkcs1pad_tmpl' was not declared. Should it be static?
Cc: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Thu, 10 Jan 2019 20:17:52 +0000 (12:17 -0800)]
crypto: gcm - use correct endianness type in gcm_hash_len()
In gcm_hash_len(), use be128 rather than u128. This fixes the following
sparse warnings:
crypto/gcm.c:252:19: warning: incorrect type in assignment (different base types)
crypto/gcm.c:252:19: expected unsigned long long [usertype] a
crypto/gcm.c:252:19: got restricted __be64 [usertype]
crypto/gcm.c:253:19: warning: incorrect type in assignment (different base types)
crypto/gcm.c:253:19: expected unsigned long long [usertype] b
crypto/gcm.c:253:19: got restricted __be64 [usertype]
No actual change in behavior.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
YueHaibing [Wed, 9 Jan 2019 06:11:18 +0000 (06:11 +0000)]
crypto: brcm - Fix some set-but-not-used warning
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/crypto/bcm/cipher.c: In function 'handle_ahash_req':
drivers/crypto/bcm/cipher.c:720:15: warning:
variable 'chunk_start' set but not used [-Wunused-but-set-variable]
drivers/crypto/bcm/cipher.c: In function 'spu_rx_callback':
drivers/crypto/bcm/cipher.c:1679:31: warning:
variable 'areq' set but not used [-Wunused-but-set-variable]
drivers/crypto/bcm/cipher.c:1678:22: warning:
variable 'ctx' set but not used [-Wunused-but-set-variable]
Fixes: 9d12ba86f818 ("crypto: brcm - Add Broadcom SPU driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Vitaly Chikunov [Mon, 7 Jan 2019 17:54:27 +0000 (20:54 +0300)]
crypto: testmgr - split akcipher tests by a key type
Before this, if akcipher_testvec have `public_key_vec' set to true
(i.e. having a public key) only sign/encrypt test is performed, but
verify/decrypt test is skipped.
With a public key we could do encrypt and verify, but to sign and decrypt
a private key is required.
This logic is correct for encrypt/decrypt tests (decrypt is skipped if
no private key). But incorrect for sign/verify tests - sign is performed
no matter if there is no private key, but verify is skipped if there is
a public key.
Rework `test_akcipher_one' to arrange tests properly depending on value
of `public_key_vec` and `siggen_sigver_test'.
No tests were missed since there is only one sign/verify test (which
have `siggen_sigver_test' set to true) and it has a private key, but
future tests could benefit from this improvement.
Signed-off-by: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 7 Jan 2019 03:08:01 +0000 (19:08 -0800)]
crypto: shash - remove pointless checks of shash_alg::{export,import}
crypto_init_shash_ops_async() only gives the ahash tfm non-NULL
->export() and ->import() if the underlying shash alg has these
non-NULL. This doesn't make sense because when an shash algorithm is
registered, shash_prepare_alg() sets a default ->export() and ->import()
if the implementor didn't provide them. And elsewhere it's assumed that
all shash algs and ahash tfms have non-NULL ->export() and ->import().
Therefore, remove these unnecessary, always-true conditions.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 7 Jan 2019 03:07:20 +0000 (19:07 -0800)]
crypto: shash - require neither or both ->export() and ->import()
Prevent registering shash algorithms that implement ->export() but not
->import(), or ->import() but not ->export(). Such cases don't make
sense and could confuse the check that shash_prepare_alg() does for just
->export().
I don't believe this affects any existing algorithms; this is just
preventing future mistakes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 7 Jan 2019 02:47:44 +0000 (18:47 -0800)]
crypto: aead - set CRYPTO_TFM_NEED_KEY if ->setkey() fails
Some algorithms have a ->setkey() method that is not atomic, in the
sense that setting a key can fail after changes were already made to the
tfm context. In this case, if a key was already set the tfm can end up
in a state that corresponds to neither the old key nor the new key.
For example, in gcm.c, if the kzalloc() fails due to lack of memory,
then the CTR part of GCM will have the new key but GHASH will not.
It's not feasible to make all ->setkey() methods atomic, especially ones
that have to key multiple sub-tfms. Therefore, make the crypto API set
CRYPTO_TFM_NEED_KEY if ->setkey() fails, to prevent the tfm from being
used until a new key is set.
[Cc stable mainly because when introducing the NEED_KEY flag I changed
AF_ALG to rely on it; and unlike in-kernel crypto API users, AF_ALG
previously didn't have this problem. So these "incompletely keyed"
states became theoretically accessible via AF_ALG -- though, the
opportunities for causing real mischief seem pretty limited.]
Fixes: dc26c17f743a ("crypto: aead - prevent using AEADs without setting key")
Cc: <stable@vger.kernel.org> # v4.16+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 7 Jan 2019 02:47:43 +0000 (18:47 -0800)]
crypto: skcipher - set CRYPTO_TFM_NEED_KEY if ->setkey() fails
Some algorithms have a ->setkey() method that is not atomic, in the
sense that setting a key can fail after changes were already made to the
tfm context. In this case, if a key was already set the tfm can end up
in a state that corresponds to neither the old key nor the new key.
For example, in lrw.c, if gf128mul_init_64k_bbe() fails due to lack of
memory, then priv::table will be left NULL. After that, encryption with
that tfm will cause a NULL pointer dereference.
It's not feasible to make all ->setkey() methods atomic, especially ones
that have to key multiple sub-tfms. Therefore, make the crypto API set
CRYPTO_TFM_NEED_KEY if ->setkey() fails and the algorithm requires a
key, to prevent the tfm from being used until a new key is set.
[Cc stable mainly because when introducing the NEED_KEY flag I changed
AF_ALG to rely on it; and unlike in-kernel crypto API users, AF_ALG
previously didn't have this problem. So these "incompletely keyed"
states became theoretically accessible via AF_ALG -- though, the
opportunities for causing real mischief seem pretty limited.]
Fixes: f8d33fac8480 ("crypto: skcipher - prevent using skciphers without setting key")
Cc: <stable@vger.kernel.org> # v4.16+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 7 Jan 2019 02:47:42 +0000 (18:47 -0800)]
crypto: hash - set CRYPTO_TFM_NEED_KEY if ->setkey() fails
Some algorithms have a ->setkey() method that is not atomic, in the
sense that setting a key can fail after changes were already made to the
tfm context. In this case, if a key was already set the tfm can end up
in a state that corresponds to neither the old key nor the new key.
It's not feasible to make all ->setkey() methods atomic, especially ones
that have to key multiple sub-tfms. Therefore, make the crypto API set
CRYPTO_TFM_NEED_KEY if ->setkey() fails and the algorithm requires a
key, to prevent the tfm from being used until a new key is set.
Note: we can't set CRYPTO_TFM_NEED_KEY for OPTIONAL_KEY algorithms, so
->setkey() for those must nevertheless be atomic. That's fine for now
since only the crc32 and crc32c algorithms set OPTIONAL_KEY, and it's
not intended that OPTIONAL_KEY be used much.
[Cc stable mainly because when introducing the NEED_KEY flag I changed
AF_ALG to rely on it; and unlike in-kernel crypto API users, AF_ALG
previously didn't have this problem. So these "incompletely keyed"
states became theoretically accessible via AF_ALG -- though, the
opportunities for causing real mischief seem pretty limited.]
Fixes: 9fa68f620041 ("crypto: hash - prevent using keyed hashes without setting key")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 6 Jan 2019 20:46:06 +0000 (12:46 -0800)]
crypto: algapi - reject NULL crypto_spawn::inst
It took me a while to notice the bug where the adiantum template left
crypto_spawn::inst == NULL, because this only caused problems in certain
cases where algorithms are dynamically loaded/unloaded.
More improvements are needed, but for now make crypto_init_spawn()
reject this case and WARN(), so this type of bug will be noticed
immediately in the future.
Note: I checked all callers and the adiantum template was the only place
that had this wrong. So this WARN shouldn't trigger anymore.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:25 +0000 (20:16 -0800)]
crypto: algapi - remove crypto_alloc_instance()
Now that all "blkcipher" templates have been converted to "skcipher",
crypto_alloc_instance() is no longer used. And it's not useful any
longer as it creates an old-style weakly typed instance rather than a
new-style strongly typed instance. So remove it, and now that the name
is freed up rename crypto_alloc_instance2() to crypto_alloc_instance().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:24 +0000 (20:16 -0800)]
crypto: null - convert ecb-cipher_null to skcipher API
Convert the "ecb-cipher_null" algorithm from the deprecated "blkcipher"
API to the "skcipher" API.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:23 +0000 (20:16 -0800)]
crypto: arc4 - convert to skcipher API
Convert the "ecb(arc4)" algorithm from the deprecated "blkcipher" API to
the "skcipher" API.
(Note that this is really a stream cipher and not a block cipher in ECB
mode as the name implies, but that's a problem for another day...)
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:22 +0000 (20:16 -0800)]
crypto: pcbc - convert to skcipher_alloc_instance_simple()
The PCBC template just wraps a single block cipher algorithm, so
simplify it by converting it to use skcipher_alloc_instance_simple().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:21 +0000 (20:16 -0800)]
crypto: pcbc - remove ability to wrap internal ciphers
Following commit
944585a64f5e ("crypto: x86/aes-ni - remove special
handling of AES in PCBC mode"), it's no longer needed for the PCBC
template to support wrapping a cipher that has the CRYPTO_ALG_INTERNAL
flag set. Thus, remove this now-unused functionality to make PCBC
consistent with the other single block cipher templates.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:20 +0000 (20:16 -0800)]
crypto: ofb - convert to skcipher_alloc_instance_simple()
The OFB template just wraps a single block cipher algorithm, so simplify
it by converting it to use skcipher_alloc_instance_simple().
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:19 +0000 (20:16 -0800)]
crypto: keywrap - convert to skcipher API
Convert the keywrap template from the deprecated "blkcipher" API to the
"skcipher" API, taking advantage of skcipher_alloc_instance_simple() to
simplify it considerably.
Cc: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:18 +0000 (20:16 -0800)]
crypto: ecb - convert to skcipher API
Convert the ECB template from the deprecated "blkcipher" API to the
"skcipher" API, taking advantage of skcipher_alloc_instance_simple() to
simplify it considerably.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:17 +0000 (20:16 -0800)]
crypto: ctr - convert to skcipher API
Convert the CTR template from the deprecated "blkcipher" API to the
"skcipher" API, taking advantage of skcipher_alloc_instance_simple() to
simplify it considerably.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:16 +0000 (20:16 -0800)]
crypto: cfb - convert to skcipher_alloc_instance_simple()
The CFB template just wraps a single block cipher algorithm, so simplify
it by converting it to use skcipher_alloc_instance_simple().
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:15 +0000 (20:16 -0800)]
crypto: cbc - convert to skcipher_alloc_instance_simple()
The CBC template just wraps a single block cipher algorithm, so simplify
it by converting it to use skcipher_alloc_instance_simple().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:14 +0000 (20:16 -0800)]
crypto: skcipher - add helper for simple block cipher modes
The majority of skcipher templates (including both the existing ones and
the ones remaining to be converted from the "blkcipher" API) just wrap a
single block cipher algorithm. This includes cbc, cfb, ctr, ecb, kw,
ofb, and pcbc. Add a helper function skcipher_alloc_instance_simple()
that handles allocating an skcipher instance for this common case.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:13 +0000 (20:16 -0800)]
crypto: pcbc - remove bogus memcpy()s with src == dest
The memcpy()s in the PCBC implementation use walk->iv as both the source
and destination, which has undefined behavior. These memcpy()'s are
actually unneeded, because walk->iv is already used to hold the previous
plaintext block XOR'd with the previous ciphertext block. Thus,
walk->iv is already updated to its final value.
So remove the broken and unnecessary memcpy()s.
Fixes: 91652be5d1b9 ("[CRYPTO] pcbc: Add Propagated CBC template")
Cc: <stable@vger.kernel.org> # v2.6.21+
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:12 +0000 (20:16 -0800)]
crypto: ofb - fix handling partial blocks and make thread-safe
Fix multiple bugs in the OFB implementation:
1. It stored the per-request state 'cnt' in the tfm context, which can be
used by multiple threads concurrently (e.g. via AF_ALG).
2. It didn't support messages not a multiple of the block cipher size,
despite being a stream cipher.
3. It didn't set cra_blocksize to 1 to indicate it is a stream cipher.
To fix these, set the 'chunksize' property to the cipher block size to
guarantee that when walking through the scatterlist, a partial block can
only occur at the end. Then change the implementation to XOR a block at
a time at first, then XOR the partial block at the end if needed. This
is the same way CTR and CFB are implemented. As a bonus, this also
improves performance in most cases over the current approach.
Fixes: e497c51896b3 ("crypto: ofb - add output feedback mode")
Cc: <stable@vger.kernel.org> # v4.20+
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:11 +0000 (20:16 -0800)]
crypto: cfb - remove bogus memcpy() with src == dest
The memcpy() in crypto_cfb_decrypt_inplace() uses walk->iv as both the
source and destination, which has undefined behavior. It is unneeded
because walk->iv is already used to hold the previous ciphertext block;
thus, walk->iv is already updated to its final value. So, remove it.
Also, note that in-place decryption is the only case where the previous
ciphertext block is not directly available. Therefore, as a related
cleanup I also updated crypto_cfb_encrypt_segment() to directly use the
previous ciphertext block rather than save it into walk->iv. This makes
it consistent with in-place encryption and out-of-place decryption; now
only in-place decryption is different, because it has to be.
Fixes: a7d85e06ed80 ("crypto: cfb - add support for Cipher FeedBack mode")
Cc: <stable@vger.kernel.org> # v4.17+
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Fri, 4 Jan 2019 04:16:10 +0000 (20:16 -0800)]
crypto: cfb - add missing 'chunksize' property
Like some other block cipher mode implementations, the CFB
implementation assumes that while walking through the scatterlist, a
partial block does not occur until the end. But the walk is incorrectly
being done with a blocksize of 1, as 'cra_blocksize' is set to 1 (since
CFB is a stream cipher) but no 'chunksize' is set. This bug causes
incorrect encryption/decryption for some scatterlist layouts.
Fix it by setting the 'chunksize'. Also extend the CFB test vectors to
cover this bug as well as cases where the message length is not a
multiple of the block size.
Fixes: a7d85e06ed80 ("crypto: cfb - add support for Cipher FeedBack mode")
Cc: <stable@vger.kernel.org> # v4.17+
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Colin Ian King [Sun, 30 Dec 2018 13:46:21 +0000 (13:46 +0000)]
crypto: virtio - clean up indentation, replace spaces with tab
A statement is indented with spaces and not indented enough, fix this
replacing spaces with a tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
haco [Fri, 28 Dec 2018 10:09:40 +0000 (10:09 +0000)]
crypto: Kconfig - Fix typo in "pclmul"
Fix typo "plcmul" to "pclmul"
Signed-off-by: Huaxuan Mao <minhaco@msn.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
YueHaibing [Fri, 28 Dec 2018 06:53:53 +0000 (06:53 +0000)]
crypto: chelsio - remove set but not used variables 'adap'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/crypto/chelsio/chcr_algo.c: In function 'chcr_device_init':
drivers/crypto/chelsio/chcr_algo.c:1371:18: warning:
variable 'adap' set but not used [-Wunused-but-set-variable]
It not used since commit
a1c6fd4308d3 ("crypto: chelsio - Update ntx queue
received from cxgb4")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
YueHaibing [Fri, 28 Dec 2018 06:41:00 +0000 (14:41 +0800)]
crypto: chelsio - check set_msg_len overflow in generate_b0
set_msg_len may fails with -EOVERFLOW, It should be propagate
to upstream.
Fixes: 2debd3325e55 ("crypto: chcr - Add AEAD algos.")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
YueHaibing [Fri, 28 Dec 2018 06:10:33 +0000 (06:10 +0000)]
crypto: ux500 - catch dma submission error
Test cookie return by dmaengine_submit() and return error if any.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Christian Lamparter [Sun, 23 Dec 2018 01:16:13 +0000 (02:16 +0100)]
crypto: crypto4xx - add prng crypto support
This patch adds support for crypto4xx's ANSI X9.17 Annex C compliant
pseudo random number generator which provides a pseudo random source
for the purpose of generating Initialization Vectors (IV's) for AES
algorithms to the Packet Engine and other pseudo random number
requirements.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Iuliana Prodan [Fri, 21 Dec 2018 15:59:10 +0000 (17:59 +0200)]
crypto: caam - add support for xcbc(aes)
Add xcbc(aes) offloading support.
Due to xcbc algorithm design and HW implementation in CAAM,
driver must still have some bytes to send to the crypto engine when
ahash_final() is called - such that HW correctly uses either K2 or K3
for the last block.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Iuliana Prodan [Fri, 21 Dec 2018 15:59:09 +0000 (17:59 +0200)]
crypto: caam - create ahash shared descriptors only once
For keyed hash algorithms, shared descriptors are currently generated
twice:
-at tfm initialization time, in cra_init() callback
-in setkey() callback
Since it's mandatory to call setkey() for keyed algorithms, drop the
generation in cra_init().
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Iuliana Prodan [Fri, 21 Dec 2018 15:59:08 +0000 (17:59 +0200)]
crypto: caam - fix error reporting for caam_hash_alloc
Fix error reporting when preparation of an hmac algorithm
for registration fails: print the hmac algorithm name, not the unkeyed
hash algorithm name.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hook, Gary [Tue, 18 Dec 2018 15:48:29 +0000 (15:48 +0000)]
crypto: ccp - Update copyright notices and dates
Correct copyright dates for files that have had code added
to them in 2018.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
YueHaibing [Tue, 18 Dec 2018 02:26:14 +0000 (02:26 +0000)]
crypto: chtls - remove set but not used variables 'err, adap, request, hws'
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/crypto/chelsio/chtls/chtls_io.c: In function 'csk_wait_memory':
drivers/crypto/chelsio/chtls/chtls_io.c:925:6: warning:
variable 'sndbuf' set but not used [-Wunused-but-set-variable]
drivers/crypto/chelsio/chtls/chtls_io.c: In function 'chtls_pt_recvmsg':
drivers/crypto/chelsio/chtls/chtls_io.c:1411:6: warning:
variable 'request' set but not used [-Wunused-but-set-variable]
drivers/crypto/chelsio/chtls/chtls_io.c:1407:18: warning:
variable 'adap' set but not used [-Wunused-but-set-variable]
drivers/crypto/chelsio/chtls/chtls_io.c: In function 'chtls_recvmsg':
drivers/crypto/chelsio/chtls/chtls_io.c:1701:6: warning:
variable 'request' set but not used [-Wunused-but-set-variable]
drivers/crypto/chelsio/chtls/chtls_io.c:1697:20: warning:
variable 'hws' set but not used [-Wunused-but-set-variable]
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 17 Dec 2018 03:12:18 +0000 (19:12 -0800)]
crypto: cipher - remove struct cipher_desc
'struct cipher_desc' is unused. Remove it.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Horia Geantă [Thu, 10 Jan 2019 13:58:12 +0000 (15:58 +0200)]
crypto: caam - move shared symbols in a common location
There are several issues with symbols shared b/w:
-caam/jr and caam/qi drivers on one hand
-caam/qi2 driver on the other hand
Commit
52813ab24959 ("crypto: caam/qi2 - avoid double export") fixed
some of them, however compilation still fails for CRYPTO_DEV_FSL_CAAM=m
and CRYPTO_DEV_FSL_DPAA2_CAAM=y.
Another issue is related to dependency cycles reported by depmod when
CRYPTO_DEV_FSL_CAAM=n and CRYPTO_DEV_FSL_DPAA2_CAAM=m, as mentioned in
82c7b351be3f ("Revert "arm64: defconfig: Enable FSL_MC_BUS and FSL_MC_DPIO"")
To fix all these, move the symbols shared by these drivers in a common
location. The only existing possibility is error.c file (note that naming
doesn't help and should probably change).
Fixes: 52813ab24959 ("crypto: caam/qi2 - avoid double export")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Wed, 9 Jan 2019 06:12:41 +0000 (22:12 -0800)]
crypto: sm3 - fix undefined shift by >= width of value
sm3_compress() calls rol32() with shift >= 32, which causes undefined
behavior. This is easily detected by enabling CONFIG_UBSAN.
Explicitly AND with 31 to make the behavior well defined.
Fixes: 4f0fc1600edb ("crypto: sm3 - add OSCCA SM3 secure hash")
Cc: <stable@vger.kernel.org> # v4.15+
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Christophe Leroy [Tue, 8 Jan 2019 06:56:48 +0000 (06:56 +0000)]
crypto: talitos - fix ablkcipher for CONFIG_VMAP_STACK
[ 2.364486] WARNING: CPU: 0 PID: 60 at ./arch/powerpc/include/asm/io.h:837 dma_nommu_map_page+0x44/0xd4
[ 2.373579] CPU: 0 PID: 60 Comm: cryptomgr_test Tainted: G W
4.20.0-rc5-00560-g6bfb52e23a00-dirty #531
[ 2.384740] NIP:
c000c540 LR:
c000c584 CTR:
00000000
[ 2.389743] REGS:
c95abab0 TRAP: 0700 Tainted: G W (
4.20.0-rc5-00560-g6bfb52e23a00-dirty)
[ 2.400042] MSR:
00029032 <EE,ME,IR,DR,RI> CR:
24042204 XER:
00000000
[ 2.406669]
[ 2.406669] GPR00:
c02f2244 c95abb60 c6262990 c95abd80 0000256a 00000001 00000001 00000001
[ 2.406669] GPR08:
00000000 00002000 00000010 00000010 24042202 00000000 00000100 c95abd88
[ 2.406669] GPR16:
00000000 c05569d4 00000001 00000010 c95abc88 c0615664 00000004 00000000
[ 2.406669] GPR24:
00000010 c95abc88 c95abc88 00000000 c61ae210 c7ff6d40 c61ae210 00003d68
[ 2.441559] NIP [
c000c540] dma_nommu_map_page+0x44/0xd4
[ 2.446720] LR [
c000c584] dma_nommu_map_page+0x88/0xd4
[ 2.451762] Call Trace:
[ 2.454195] [
c95abb60] [
82000808] 0x82000808 (unreliable)
[ 2.459572] [
c95abb80] [
c02f2244] talitos_edesc_alloc+0xbc/0x3c8
[ 2.465493] [
c95abbb0] [
c02f2600] ablkcipher_edesc_alloc+0x4c/0x5c
[ 2.471606] [
c95abbd0] [
c02f4ed0] ablkcipher_encrypt+0x20/0x64
[ 2.477389] [
c95abbe0] [
c02023b0] __test_skcipher+0x4bc/0xa08
[ 2.483049] [
c95abe00] [
c0204b60] test_skcipher+0x2c/0xcc
[ 2.488385] [
c95abe20] [
c0204c48] alg_test_skcipher+0x48/0xbc
[ 2.494064] [
c95abe40] [
c0205cec] alg_test+0x164/0x2e8
[ 2.499142] [
c95abf00] [
c0200dec] cryptomgr_test+0x48/0x50
[ 2.504558] [
c95abf10] [
c0039ff4] kthread+0xe4/0x110
[ 2.509471] [
c95abf40] [
c000e1d0] ret_from_kernel_thread+0x14/0x1c
[ 2.515532] Instruction dump:
[ 2.518468]
7c7e1b78 7c9d2378 7cbf2b78 41820054 3d20c076 8089c200 3d20c076 7c84e850
[ 2.526127]
8129c204 7c842e70 7f844840 419c0008 <
0fe00000>
2f9e0000 54847022 7c84fa14
[ 2.533960] ---[ end trace
bf78d94af73fe3b8 ]---
[ 2.539123] talitos
ff020000.crypto: master data transfer error
[ 2.544775] talitos
ff020000.crypto: TEA error: ISR 0x20000000_00000040
[ 2.551625] alg: skcipher: encryption failed on test 1 for ecb-aes-talitos: ret=22
IV cannot be on stack when CONFIG_VMAP_STACK is selected because the stack
cannot be DMA mapped anymore.
This patch copies the IV into the extended descriptor.
Fixes: 4de9d0b547b9 ("crypto: talitos - Add ablkcipher algorithms")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Christophe Leroy [Tue, 8 Jan 2019 06:56:46 +0000 (06:56 +0000)]
crypto: talitos - reorder code in talitos_edesc_alloc()
This patch moves the mapping of IV after the kmalloc(). This
avoids having to unmap in case kmalloc() fails.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sun, 6 Jan 2019 20:46:05 +0000 (12:46 -0800)]
crypto: adiantum - initialize crypto_spawn::inst
crypto_grab_*() doesn't set crypto_spawn::inst, so templates must set it
beforehand. Otherwise it will be left NULL, which causes a crash in
certain cases where algorithms are dynamically loaded/unloaded. E.g.
with CONFIG_CRYPTO_CHACHA20_X86_64=m, the following caused a crash:
insmod chacha-x86_64.ko
python -c 'import socket; socket.socket(socket.AF_ALG, 5, 0).bind(("skcipher", "adiantum(xchacha12,aes)"))'
rmmod chacha-x86_64.ko
python -c 'import socket; socket.socket(socket.AF_ALG, 5, 0).bind(("skcipher", "adiantum(xchacha12,aes)"))'
Fixes: 059c2a4d8e16 ("crypto: adiantum - add Adiantum support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Dan Carpenter [Fri, 4 Jan 2019 06:46:11 +0000 (09:46 +0300)]
crypto: cavium/nitrox - Use after free in process_response_list()
We free "sr" and then dereference it on the next line.
Fixes: c9613335bf4f ("crypto: cavium/nitrox - Added AEAD cipher support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Harsh Jain [Thu, 3 Jan 2019 08:51:05 +0000 (14:21 +0530)]
crypto: authencesn - Avoid twice completion call in decrypt path
Authencesn template in decrypt path unconditionally calls aead_request_complete
after ahash_verify which leads to following kernel panic in after decryption.
[ 338.539800] BUG: unable to handle kernel NULL pointer dereference at
0000000000000004
[ 338.548372] PGD 0 P4D 0
[ 338.551157] Oops: 0000 [#1] SMP PTI
[ 338.554919] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Tainted: G W I 4.19.7+ #13
[ 338.564431] Hardware name: Supermicro X8ST3/X8ST3, BIOS 2.0 07/29/10
[ 338.572212] RIP: 0010:esp_input_done2+0x350/0x410 [esp4]
[ 338.578030] Code: ff 0f b6 68 10 48 8b 83 c8 00 00 00 e9 8e fe ff ff 8b 04 25 04 00 00 00 83 e8 01 48 98 48 8b 3c c5 10 00 00 00 e9 f7 fd ff ff <8b> 04 25 04 00 00 00 83 e8 01 48 98 4c 8b 24 c5 10 00 00 00 e9 3b
[ 338.598547] RSP: 0018:
ffff911c97803c00 EFLAGS:
00010246
[ 338.604268] RAX:
0000000000000002 RBX:
ffff911c4469ee00 RCX:
0000000000000000
[ 338.612090] RDX:
0000000000000000 RSI:
0000000000000130 RDI:
ffff911b87c20400
[ 338.619874] RBP:
0000000000000000 R08:
ffff911b87c20498 R09:
000000000000000a
[ 338.627610] R10:
0000000000000001 R11:
0000000000000004 R12:
0000000000000000
[ 338.635402] R13:
ffff911c89590000 R14:
ffff911c91730000 R15:
0000000000000000
[ 338.643234] FS:
0000000000000000(0000) GS:
ffff911c97800000(0000) knlGS:
0000000000000000
[ 338.652047] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 338.658299] CR2:
0000000000000004 CR3:
00000001ec20a000 CR4:
00000000000006f0
[ 338.666382] Call Trace:
[ 338.669051] <IRQ>
[ 338.671254] esp_input_done+0x12/0x20 [esp4]
[ 338.675922] chcr_handle_resp+0x3b5/0x790 [chcr]
[ 338.680949] cpl_fw6_pld_handler+0x37/0x60 [chcr]
[ 338.686080] chcr_uld_rx_handler+0x22/0x50 [chcr]
[ 338.691233] uldrx_handler+0x8c/0xc0 [cxgb4]
[ 338.695923] process_responses+0x2f0/0x5d0 [cxgb4]
[ 338.701177] ? bitmap_find_next_zero_area_off+0x3a/0x90
[ 338.706882] ? matrix_alloc_area.constprop.7+0x60/0x90
[ 338.712517] ? apic_update_irq_cfg+0x82/0xf0
[ 338.717177] napi_rx_handler+0x14/0xe0 [cxgb4]
[ 338.722015] net_rx_action+0x2aa/0x3e0
[ 338.726136] __do_softirq+0xcb/0x280
[ 338.730054] irq_exit+0xde/0xf0
[ 338.733504] do_IRQ+0x54/0xd0
[ 338.736745] common_interrupt+0xf/0xf
Fixes: 104880a6b470 ("crypto: authencesn - Convert to new AEAD...")
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Horia Geantă [Fri, 21 Dec 2018 12:47:46 +0000 (14:47 +0200)]
crypto: caam - fix SHA support detection
The addition of Chacha20 + Poly1305 authenc support inadvertently broke
detection of algorithms supported by MDHA (Message Digest Hardware
Accelerator), fix it.
Fixes: d6bbd4eea243 ("crypto: caam/jr - add support for Chacha20 + Poly1305")
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Aymen Sghaier [Wed, 19 Dec 2018 14:36:44 +0000 (16:36 +0200)]
crypto: caam - fix zero-length buffer DMA mapping
Recent changes - probably DMA API related (generic and/or arm64-specific) -
exposed a case where driver maps a zero-length buffer:
ahash_init()->ahash_update()->ahash_final() with a zero-length string to
hash
kernel BUG at kernel/dma/swiotlb.c:475!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:
CPU: 2 PID: 1823 Comm: cryptomgr_test Not tainted
4.20.0-rc1-00108-g00c9fe37a7f2 #1
Hardware name: LS1046A RDB Board (DT)
pstate:
80000005 (Nzcv daif -PAN -UAO)
pc : swiotlb_tbl_map_single+0x170/0x2b8
lr : swiotlb_map_page+0x134/0x1f8
sp :
ffff00000f79b8f0
x29:
ffff00000f79b8f0 x28:
0000000000000000
x27:
ffff0000093d0000 x26:
0000000000000000
x25:
00000000001f3ffe x24:
0000000000200000
x23:
0000000000000000 x22:
00000009f2c538c0
x21:
ffff800970aeb410 x20:
0000000000000001
x19:
ffff800970aeb410 x18:
0000000000000007
x17:
000000000000000e x16:
0000000000000001
x15:
0000000000000019 x14:
c32cb8218a167fe8
x13:
ffffffff00000000 x12:
ffff80097fdae348
x11:
0000800976bca000 x10:
0000000000000010
x9 :
0000000000000000 x8 :
ffff0000091fd6c8
x7 :
0000000000000000 x6 :
00000009f2c538bf
x5 :
0000000000000000 x4 :
0000000000000001
x3 :
0000000000000000 x2 :
00000009f2c538c0
x1 :
00000000f9fff000 x0 :
0000000000000000
Process cryptomgr_test (pid: 1823, stack limit = 0x(____ptrval____))
Call trace:
swiotlb_tbl_map_single+0x170/0x2b8
swiotlb_map_page+0x134/0x1f8
ahash_final_no_ctx+0xc4/0x6cc
ahash_final+0x10/0x18
crypto_ahash_op+0x30/0x84
crypto_ahash_final+0x14/0x1c
__test_hash+0x574/0xe0c
test_hash+0x28/0x80
__alg_test_hash+0x84/0xd0
alg_test_hash+0x78/0x144
alg_test.part.30+0x12c/0x2b4
alg_test+0x3c/0x68
cryptomgr_test+0x44/0x4c
kthread+0xfc/0x128
ret_from_fork+0x10/0x18
Code:
d34bfc18 2a1a03f7 1a9f8694 35fff89a (
d4210000)
Cc: <stable@vger.kernel.org>
Signed-off-by: Aymen Sghaier <aymen.sghaier@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 17 Dec 2018 07:23:24 +0000 (23:23 -0800)]
crypto: ccree - convert to use crypto_authenc_extractkeys()
Convert the ccree crypto driver to use crypto_authenc_extractkeys() so
that it picks up the fix for broken validation of rtattr::rta_len.
Fixes: ff27e85a85bb ("crypto: ccree - add AEAD support")
Cc: <stable@vger.kernel.org> # v4.17+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 17 Dec 2018 07:23:23 +0000 (23:23 -0800)]
crypto: bcm - convert to use crypto_authenc_extractkeys()
Convert the bcm crypto driver to use crypto_authenc_extractkeys() so
that it picks up the fix for broken validation of rtattr::rta_len.
This also fixes the DES weak key check to actually be done on the right
key. (It was checking the authentication key, not the encryption key...)
Fixes: 9d12ba86f818 ("crypto: brcm - Add Broadcom SPU driver")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Mon, 17 Dec 2018 07:23:22 +0000 (23:23 -0800)]
crypto: authenc - fix parsing key with misaligned rta_len
Keys for "authenc" AEADs are formatted as an rtattr containing a 4-byte
'enckeylen', followed by an authentication key and an encryption key.
crypto_authenc_extractkeys() parses the key to find the inner keys.
However, it fails to consider the case where the rtattr's payload is
longer than 4 bytes but not 4-byte aligned, and where the key ends
before the next 4-byte aligned boundary. In this case, 'keylen -=
RTA_ALIGN(rta->rta_len);' underflows to a value near UINT_MAX. This
causes a buffer overread and crash during crypto_ahash_setkey().
Fix it by restricting the rtattr payload to the expected size.
Reproducer using AF_ALG:
#include <linux/if_alg.h>
#include <linux/rtnetlink.h>
#include <sys/socket.h>
int main()
{
int fd;
struct sockaddr_alg addr = {
.salg_type = "aead",
.salg_name = "authenc(hmac(sha256),cbc(aes))",
};
struct {
struct rtattr attr;
__be32 enckeylen;
char keys[1];
} __attribute__((packed)) key = {
.attr.rta_len = sizeof(key),
.attr.rta_type = 1 /* CRYPTO_AUTHENC_KEYA_PARAM */,
};
fd = socket(AF_ALG, SOCK_SEQPACKET, 0);
bind(fd, (void *)&addr, sizeof(addr));
setsockopt(fd, SOL_ALG, ALG_SET_KEY, &key, sizeof(key));
}
It caused:
BUG: unable to handle kernel paging request at
ffff88007ffdc000
PGD
2e01067 P4D
2e01067 PUD
2e04067 PMD
2e05067 PTE 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 883 Comm: authenc Not tainted
4.20.0-rc1-00108-g00c9fe37a7f27 #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-20181126_142135-anatol 04/01/2014
RIP: 0010:sha256_ni_transform+0xb3/0x330 arch/x86/crypto/sha256_ni_asm.S:155
[...]
Call Trace:
sha256_ni_finup+0x10/0x20 arch/x86/crypto/sha256_ssse3_glue.c:321
crypto_shash_finup+0x1a/0x30 crypto/shash.c:178
shash_digest_unaligned+0x45/0x60 crypto/shash.c:186
crypto_shash_digest+0x24/0x40 crypto/shash.c:202
hmac_setkey+0x135/0x1e0 crypto/hmac.c:66
crypto_shash_setkey+0x2b/0xb0 crypto/shash.c:66
shash_async_setkey+0x10/0x20 crypto/shash.c:223
crypto_ahash_setkey+0x2d/0xa0 crypto/ahash.c:202
crypto_authenc_setkey+0x68/0x100 crypto/authenc.c:96
crypto_aead_setkey+0x2a/0xc0 crypto/aead.c:62
aead_setkey+0xc/0x10 crypto/algif_aead.c:526
alg_setkey crypto/af_alg.c:223 [inline]
alg_setsockopt+0xfe/0x130 crypto/af_alg.c:256
__sys_setsockopt+0x6d/0xd0 net/socket.c:1902
__do_sys_setsockopt net/socket.c:1913 [inline]
__se_sys_setsockopt net/socket.c:1910 [inline]
__x64_sys_setsockopt+0x1f/0x30 net/socket.c:1910
do_syscall_64+0x4a/0x180 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: e236d4a89a2f ("[CRYPTO] authenc: Move enckeylen into key itself")
Cc: <stable@vger.kernel.org> # v2.6.25+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Mon, 7 Jan 2019 01:08:20 +0000 (17:08 -0800)]
Linux 5.0-rc1
Linus Torvalds [Mon, 7 Jan 2019 00:33:10 +0000 (16:33 -0800)]
Merge tag 'kbuild-v4.21-3' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- improve boolinit.cocci and use_after_iter.cocci semantic patches
- fix alignment for kallsyms
- move 'asm goto' compiler test to Kconfig and clean up jump_label
CONFIG option
- generate asm-generic wrappers automatically if arch does not
implement mandatory UAPI headers
- remove redundant generic-y defines
- misc cleanups
* tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: rename generated .*conf-cfg to *conf-cfg
kbuild: remove unnecessary stubs for archheader and archscripts
kbuild: use assignment instead of define ... endef for filechk_* rules
arch: remove redundant UAPI generic-y defines
kbuild: generate asm-generic wrappers if mandatory headers are missing
arch: remove stale comments "UAPI Header export list"
riscv: remove redundant kernel-space generic-y
kbuild: change filechk to surround the given command with { }
kbuild: remove redundant target cleaning on failure
kbuild: clean up rule_dtc_dt_yaml
kbuild: remove UIMAGE_IN and UIMAGE_OUT
jump_label: move 'asm goto' support test to Kconfig
kallsyms: lower alignment on ARM
scripts: coccinelle: boolinit: drop warnings on named constants
scripts: coccinelle: check for redeclaration
kconfig: remove unused "file" field of yylval union
nds32: remove redundant kernel-space generic-y
nios2: remove unneeded HAS_DMA define
Linus Torvalds [Mon, 7 Jan 2019 00:30:14 +0000 (16:30 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf tooling updates form Ingo Molnar:
"A final batch of perf tooling changes: mostly fixes and small
improvements"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (29 commits)
perf session: Add comment for perf_session__register_idle_thread()
perf thread-stack: Fix thread stack processing for the idle task
perf thread-stack: Allocate an array of thread stacks
perf thread-stack: Factor out thread_stack__init()
perf thread-stack: Allow for a thread stack array
perf thread-stack: Avoid direct reference to the thread's stack
perf thread-stack: Tidy thread_stack__bottom() usage
perf thread-stack: Simplify some code in thread_stack__process()
tools gpio: Allow overriding CFLAGS
tools power turbostat: Override CFLAGS assignments and add LDFLAGS to build command
tools thermal tmon: Allow overriding CFLAGS assignments
tools power x86_energy_perf_policy: Override CFLAGS assignments and add LDFLAGS to build command
perf c2c: Increase the HITM ratio limit for displayed cachelines
perf c2c: Change the default coalesce setup
perf trace beauty ioctl: Beautify USBDEVFS_ commands
perf trace beauty: Export function to get the files for a thread
perf trace: Wire up ioctl's USBDEBFS_ cmd table generator
perf beauty ioctl: Add generator for USBDEVFS_ ioctl commands
tools headers uapi: Grab a copy of usbdevice_fs.h
perf trace: Store the major number for a file when storing its pathname
...
Linus Torvalds [Sun, 6 Jan 2019 01:50:59 +0000 (17:50 -0800)]
Change mincore() to count "mapped" pages rather than "cached" pages
The semantics of what "in core" means for the mincore() system call are
somewhat unclear, but Linux has always (since 2.3.52, which is when
mincore() was initially done) treated it as "page is available in page
cache" rather than "page is mapped in the mapping".
The problem with that traditional semantic is that it exposes a lot of
system cache state that it really probably shouldn't, and that users
shouldn't really even care about.
So let's try to avoid that information leak by simply changing the
semantics to be that mincore() counts actual mapped pages, not pages
that might be cheaply mapped if they were faulted (note the "might be"
part of the old semantics: being in the cache doesn't actually guarantee
that you can access them without IO anyway, since things like network
filesystems may have to revalidate the cache before use).
In many ways the old semantics were somewhat insane even aside from the
information leak issue. From the very beginning (and that beginning is
a long time ago: 2.3.52 was released in March 2000, I think), the code
had a comment saying
Later we can get more picky about what "in core" means precisely.
and this is that "later". Admittedly it is much later than is really
comfortable.
NOTE! This is a real semantic change, and it is for example known to
change the output of "fincore", since that program literally does a
mmmap without populating it, and then doing "mincore()" on that mapping
that doesn't actually have any pages in it.
I'm hoping that nobody actually has any workflow that cares, and the
info leak is real.
We may have to do something different if it turns out that people have
valid reasons to want the old semantics, and if we can limit the
information leak sanely.
Cc: Kevin Easton <kevin@guarana.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Masatake YAMATO <yamato@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jan 2019 19:15:04 +0000 (11:15 -0800)]
Fix 'acccess_ok()' on alpha and SH
Commit
594cc251fdd0 ("make 'user_access_begin()' do 'access_ok()'")
broke both alpha and SH booting in qemu, as noticed by Guenter Roeck.
It turns out that the bug wasn't actually in that commit itself (which
would have been surprising: it was mostly a no-op), but in how the
addition of access_ok() to the strncpy_from_user() and strnlen_user()
functions now triggered the case where those functions would test the
access of the very last byte of the user address space.
The string functions actually did that user range test before too, but
they did it manually by just comparing against user_addr_max(). But
with user_access_begin() doing the check (using "access_ok()"), it now
exposed problems in the architecture implementations of that function.
For example, on alpha, the access_ok() helper macro looked like this:
#define __access_ok(addr, size) \
((get_fs().seg & (addr | size | (addr+size))) == 0)
and what it basically tests is of any of the high bits get set (the
USER_DS masking value is 0xfffffc0000000000).
And that's completely wrong for the "addr+size" check. Because it's
off-by-one for the case where we check to the very end of the user
address space, which is exactly what the strn*_user() functions do.
Why? Because "addr+size" will be exactly the size of the address space,
so trying to access the last byte of the user address space will fail
the __access_ok() check, even though it shouldn't. As a result, the
user string accessor functions failed consistently - because they
literally don't know how long the string is going to be, and the max
access is going to be that last byte of the user address space.
Side note: that alpha macro is buggy for another reason too - it re-uses
the arguments twice.
And SH has another version of almost the exact same bug:
#define __addr_ok(addr) \
((unsigned long __force)(addr) < current_thread_info()->addr_limit.seg)
so far so good: yes, a user address must be below the limit. But then:
#define __access_ok(addr, size) \
(__addr_ok((addr) + (size)))
is wrong with the exact same off-by-one case: the case when "addr+size"
is exactly _equal_ to the limit is actually perfectly fine (think "one
byte access at the last address of the user address space")
The SH version is actually seriously buggy in another way: it doesn't
actually check for overflow, even though it did copy the _comment_ that
talks about overflow.
So it turns out that both SH and alpha actually have completely buggy
implementations of access_ok(), but they happened to work in practice
(although the SH overflow one is a serious serious security bug, not
that anybody likely cares about SH security).
This fixes the problems by using a similar macro on both alpha and SH.
It isn't trying to be clever, the end address is based on this logic:
unsigned long __ao_end = __ao_a + __ao_b - !!__ao_b;
which basically says "add start and length, and then subtract one unless
the length was zero". We can't subtract one for a zero length, or we'd
just hit an underflow instead.
For a lot of access_ok() users the length is a constant, so this isn't
actually as expensive as it initially looks.
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 6 Jan 2019 20:21:11 +0000 (12:21 -0800)]
Merge tag 'fscrypt_for_linus' of git://git./linux/kernel/git/tytso/fscrypt
Pull fscrypt updates from Ted Ts'o:
"Add Adiantum support for fscrypt"
* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
fscrypt: add Adiantum support
Linus Torvalds [Sun, 6 Jan 2019 20:19:23 +0000 (12:19 -0800)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 bug fixes from Ted Ts'o:
"Fix a number of ext4 bugs"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix special inode number checks in __ext4_iget()
ext4: track writeback errors using the generic tracking infrastructure
ext4: use ext4_write_inode() when fsyncing w/o a journal
ext4: avoid kernel warning when writing the superblock to a dead device
ext4: fix a potential fiemap/page fault deadlock w/ inline_data
ext4: make sure enough credits are reserved for dioread_nolock writes
Linus Torvalds [Sun, 6 Jan 2019 19:47:26 +0000 (11:47 -0800)]
Merge tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"Fix various regressions introduced in this cycles:
- fix dma-debug tracking for the map_page / map_single
consolidatation
- properly stub out DMA mapping symbols for !HAS_DMA builds to avoid
link failures
- fix AMD Gart direct mappings
- setup the dma address for no kernel mappings using the remap
allocator"
* tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: fix DMA_ATTR_NO_KERNEL_MAPPING for remapped allocations
x86/amd_gart: fix unmapping of non-GART mappings
dma-mapping: remove a few unused exports
dma-mapping: properly stub out the DMA API for !CONFIG_HAS_DMA
dma-mapping: remove dmam_{declare,release}_coherent_memory
dma-mapping: implement dmam_alloc_coherent using dmam_alloc_attrs
dma-mapping: implement dma_map_single_attrs using dma_map_page_attrs
Linus Torvalds [Sun, 6 Jan 2019 19:40:06 +0000 (11:40 -0800)]
Merge tag 'tag-chrome-platform-for-v4.21' of git://git./linux/kernel/git/bleung/chrome-platform
Pull chrome platform updates from Benson Leung:
- Changes for EC_MKBP_EVENT_SENSOR_FIFO handling.
- Also, maintainership changes. Olofj out, Enric balletbo in.
* tag 'tag-chrome-platform-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform:
MAINTAINERS: add maintainers for ChromeOS EC sub-drivers
MAINTAINERS: platform/chrome: Add Enric as a maintainer
MAINTAINERS: platform/chrome: remove myself as maintainer
platform/chrome: don't report EC_MKBP_EVENT_SENSOR_FIFO as wakeup
platform/chrome: straighten out cros_ec_get_{next,host}_event() error codes
Linus Torvalds [Sun, 6 Jan 2019 19:37:44 +0000 (11:37 -0800)]
Merge tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc
Pull hwspinlock updates from Bjorn Andersson:
"This adds support for the hardware semaphores found in STM32MP1"
* tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc:
hwspinlock: fix return value check in stm32_hwspinlock_probe()
hwspinlock: add STM32 hwspinlock device
dt-bindings: hwlock: Document STM32 hwspinlock bindings
Eric Biggers [Sun, 6 Jan 2019 13:36:21 +0000 (08:36 -0500)]
fscrypt: add Adiantum support
Add support for the Adiantum encryption mode to fscrypt. Adiantum is a
tweakable, length-preserving encryption mode with security provably
reducible to that of XChaCha12 and AES-256, subject to a security bound.
It's also a true wide-block mode, unlike XTS. See the paper
"Adiantum: length-preserving encryption for entry-level processors"
(https://eprint.iacr.org/2018/720.pdf) for more details. Also see
commit
059c2a4d8e16 ("crypto: adiantum - add Adiantum support").
On sufficiently long messages, Adiantum's bottlenecks are XChaCha12 and
the NH hash function. These algorithms are fast even on processors
without dedicated crypto instructions. Adiantum makes it feasible to
enable storage encryption on low-end mobile devices that lack AES
instructions; currently such devices are unencrypted. On ARM Cortex-A7,
on 4096-byte messages Adiantum encryption is about 4 times faster than
AES-256-XTS encryption; decryption is about 5 times faster.
In fscrypt, Adiantum is suitable for encrypting both file contents and
names. With filenames, it fixes a known weakness: when two filenames in
a directory share a common prefix of >= 16 bytes, with CTS-CBC their
encrypted filenames share a common prefix too, leaking information.
Adiantum does not have this problem.
Since Adiantum also accepts long tweaks (IVs), it's also safe to use the
master key directly for Adiantum encryption rather than deriving
per-file keys, provided that the per-file nonce is included in the IVs
and the master key isn't used for any other encryption mode. This
configuration saves memory and improves performance. A new fscrypt
policy flag is added to allow users to opt-in to this configuration.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linus Torvalds [Sun, 6 Jan 2019 02:35:02 +0000 (18:35 -0800)]
Merge tag 'docs-5.0-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of late-arriving documentation fixes"
* tag 'docs-5.0-fixes' of git://git.lwn.net/linux:
doc: filesystems: fix bad references to nonexistent ext4.rst file
Documentation/admin-guide: update URL of LKML information link
Docs/kernel-api.rst: Remove blk-tag.c reference
Linus Torvalds [Sun, 6 Jan 2019 02:33:21 +0000 (18:33 -0800)]
Merge tag 'firewire-update' of git://git./linux/kernel/git/ieee1394/linux1394
Pull firewire fixlet from Stefan Richter:
"Remove an explicit dependency in Kconfig which is implied by another
dependency"
* tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Remove depends on HAS_DMA in case of platform dependency
Linus Torvalds [Sun, 6 Jan 2019 02:29:13 +0000 (18:29 -0800)]
Merge tag 'for-linus-
20190104' of git://git.kernel.dk/linux-block
Pull block updates and fixes from Jens Axboe:
- Pulled in MD changes that Shaohua had queued up for 4.21.
Unfortunately we lost Shaohua late 2018, I'm sending these in on his
behalf.
- In conjunction with the above, I added a CREDITS entry for Shaoua.
- sunvdc queue restart fix (Ming)
* tag 'for-linus-
20190104' of git://git.kernel.dk/linux-block:
Add CREDITS entry for Shaohua Li
block: sunvdc: don't run hw queue synchronously from irq context
md: fix raid10 hang issue caused by barrier
raid10: refactor common wait code from regular read/write request
md: remvoe redundant condition check
lib/raid6: add option to skip algo benchmarking
lib/raid6: sort algos in rough performance order
lib/raid6: check for assembler SSSE3 support
lib/raid6: avoid __attribute_const__ redefinition
lib/raid6: add missing include for raid6test
md: remove set but not used variable 'bi_rdev'
Linus Torvalds [Sun, 6 Jan 2019 02:25:19 +0000 (18:25 -0800)]
Merge tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Happy New Year, just decloaking from leave to get some stuff from the
last week in before rc1:
core:
- two regression fixes for damage blob and atomic
i915 gvt:
- Some missed GVT fixes from the original pull
amdgpu:
- new PCI IDs
- SR-IOV fixes
- DC fixes
- Vega20 fixes"
* tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm: (53 commits)
drm: Put damage blob when destroy plane state
drm: fix null pointer dereference on null state pointer
drm/amdgpu: Add new VegaM pci id
drm/ttm: Use drm_debug_printer for all ttm_bo_mem_space_debug output
drm/amdgpu: add Vega20 PSP ASD firmware loading
drm/amd/display: Fix MST dp_blank REG_WAIT timeout
drm/amd/display: validate extended dongle caps
drm/amd/display: Use div_u64 for flip timestamp ns to ms
drm/amdgpu/uvd:Change uvd ring name convention
drm/amd/powerplay: add Vega20 LCLK DPM level setting support
drm/amdgpu: print process info when job timeout
drm/amdgpu/nbio7.4: add hw bug workaround for vega20
drm/amdgpu/nbio6.1: add hw bug workaround for vega10/12
drm/amd/display: Optimize passive update planes.
drm/amd/display: verify lane status before exiting verify link cap
drm/amd/display: Fix bug with not updating VSP infoframe
drm/amd/display: Add retry to read ddc_clock pin
drm/amd/display: Don't skip link training for empty dongle
drm/amd/display: Wait edp HPD to high in detect_sink
drm/amd/display: fix surface update sequence
...
Linus Torvalds [Sun, 6 Jan 2019 02:20:51 +0000 (18:20 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Over the break a few defects were found, so this is a -rc style pull
request of various small things that have been posted.
- An attempt to shorten RCU grace period driven delays showed crashes
during heavier testing, and has been entirely reverted
- A missed merge/rebase error between the advise_mr and ib_device_ops
series
- Some small static analysis driven fixes from Julia and Aditya
- Missed ability to create a XRC_INI in the devx verbs interop
series"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
infiniband/qedr: Potential null ptr dereference of qp
infiniband: bnxt_re: qplib: Check the return value of send_message
IB/ipoib: drop useless LIST_HEAD
IB/core: Add advise_mr to the list of known ops
Revert "IB/mlx5: Fix long EEH recover time with NVMe offloads"
IB/mlx5: Allow XRC INI usage via verbs in DEVX context
Linus Torvalds [Sun, 6 Jan 2019 02:15:37 +0000 (18:15 -0800)]
Merge tag 'fbdev-v4.21' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"This time the pull request is really small.
The most notable changes are fixing fbcon to not cause crash on
unregister_framebuffer() operation when there is more than one
framebuffer, adding config option to center the bootup logo and making
FB_BACKLIGHT config option tristate (which in turn uncovered incorrect
FB_BACKLIGHT usage by DRM's nouveau driver).
Summary:
- fix fbcon to not cause crash on unregister_framebuffer() when there
is more than one framebuffer (Noralf Trønnes)
- improve support for small rotated displays (Peter Rosin)
- fix probe failure handling in udlfb driver (Dan Carpenter)
- add config option to center the bootup logo (Peter Rosin)
- make FB_BACKLIGHT config option tristate (Rob Clark)
- remove superfluous HAS_DMA dependency for goldfishfb driver (Geert
Uytterhoeven)
- misc fixes (Alexey Khoroshilov, YueHaibing, Colin Ian King, Lubomir
Rintel)
- misc cleanups (Yangtao Li, Wen Yang)
also there is DRM's nouveau driver fix for wrong FB_BACKLIGHT config
option usage (FB_BACKLIGHT is for internal fbdev subsystem use only)"
* tag 'fbdev-v4.21' of git://github.com/bzolnier/linux:
drm/nouveau: fix incorrect FB_BACKLIGHT usage in Kconfig
fbdev: fbcon: Fix unregister crash when more than one framebuffer
fbdev: Remove depends on HAS_DMA in case of platform dependency
pxa168fb: trivial typo fix
fbdev: fsl-diu: remove redundant null check on cmap
fbdev: omap2: omapfb: convert to DEFINE_SHOW_ATTRIBUTE
fbdev: uvesafb: fix spelling mistake "memoery" -> "memory"
fbdev: fbmem: add config option to center the bootup logo
fbdev: fbmem: make fb_show_logo_line return the end instead of the height
video: fbdev: pxafb: Fix "WARNING: invalid free of devm_ allocated data"
fbdev: fbmem: behave better with small rotated displays and many CPUs
video: clps711x-fb: release disp device node in probe()
fbdev: make FB_BACKLIGHT a tristate
udlfb: fix some inconsistent NULL checking