Commit Graph

1935 Commits

Author SHA1 Message Date
Harsh Jain
0b529f143e crypto: algif_aead - Fix kernel panic on list_del
Kernel panics when userspace program try to access AEAD interface.
Remove node from Linked List before freeing its memory.

Cc: <stable@vger.kernel.org>
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Reviewed-by: Stephan Müller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-02-03 17:45:48 +08:00
Salvatore Benedetto
d6040764ad crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg
Make sure CRYPTO_ALG_DEAD bit is cleared before proceeding with
the algorithm registration. This fixes qat-dh registration when
driver is restarted

Cc: <stable@vger.kernel.org>
Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-01-23 22:41:32 +08:00
Laura Abbott
02608e02fb crypto: testmgr - Use heap buffer for acomp test input
Christopher Covington reported a crash on aarch64 on recent Fedora
kernels:

kernel BUG at ./include/linux/scatterlist.h:140!
Internal error: Oops - BUG: 0 [] PREEMPT SMP
Modules linked in:
CPU: 2 PID: 752 Comm: cryptomgr_test Not tainted 4.9.0-11815-ge93b1cc 
Hardware name: linux,dummy-virt (DT)
task: ffff80007c650080 task.stack: ffff800008910000
PC is at sg_init_one+0xa0/0xb8
LR is at sg_init_one+0x24/0xb8
...
[<ffff000008398db8>] sg_init_one+0xa0/0xb8
[<ffff000008350a44>] test_acomp+0x10c/0x438
[<ffff000008350e20>] alg_test_comp+0xb0/0x118
[<ffff00000834f28c>] alg_test+0x17c/0x2f0
[<ffff00000834c6a4>] cryptomgr_test+0x44/0x50
[<ffff0000080dac70>] kthread+0xf8/0x128
[<ffff000008082ec0>] ret_from_fork+0x10/0x50

The test vectors used for input are part of the kernel image. These
inputs are passed as a buffer to sg_init_one which eventually blows up
with BUG_ON(!virt_addr_valid(buf)). On arm64, virt_addr_valid returns
false for the kernel image since virt_to_page will not return the
correct page. Fix this by copying the input vectors to heap buffer
before setting up the scatterlist.

Reported-by: Christopher Covington <cov@codeaurora.org>
Fixes: d7db7a882d ("crypto: acomp - update testmgr with support for acomp")
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-27 17:32:11 +08:00
Linus Torvalds
0aaf2146ec This pull contains one set of changes: a conversion of the crypto DocBook
to Sphinx.
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Merge tag 'docs-4.10-2' of git://git.lwn.net/linux

Pull more documentation updates from Jonathan Corbet:
 "This converts the crypto DocBook to Sphinx"

* tag 'docs-4.10-2' of git://git.lwn.net/linux:
  crypto: doc - optimize compilation
  crypto: doc - clarify AEAD memory structure
  crypto: doc - remove crypto_alloc_ablkcipher
  crypto: doc - add KPP documentation
  crypto: doc - fix separation of cipher / req API
  crypto: doc - fix source comments for Sphinx
  crypto: doc - remove crypto API DocBook
  crypto: doc - convert crypto API documentation to Sphinx
2016-12-17 16:00:34 -08:00
Linus Torvalds
19c75bcbe0 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - a crash regression in the new skcipher walker

   - incorrect return value in public_key_verify_signature

   - fix for in-place signing in the sign-file utility"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: skcipher - fix crash in virtual walk
  sign-file: Fix inplace signing when src and dst names are both specified
  crypto: asymmetric_keys - set error code on failure
2016-12-15 11:41:37 -08:00
Linus Torvalds
0f1d6dfe03 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.10:

  API:
   - add skcipher walk interface
   - add asynchronous compression (acomp) interface
   - fix algif_aed AIO handling of zero buffer

  Algorithms:
   - fix unaligned access in poly1305
   - fix DRBG output to large buffers

  Drivers:
   - add support for iMX6UL to caam
   - fix givenc descriptors (used by IPsec) in caam
   - accelerated SHA256/SHA512 for ARM64 from OpenSSL
   - add SSE CRCT10DIF and CRC32 to ARM/ARM64
   - add AEAD support to Chelsio chcr
   - add Armada 8K support to omap-rng"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (148 commits)
  crypto: testmgr - fix overlap in chunked tests again
  crypto: arm/crc32 - accelerated support based on x86 SSE implementation
  crypto: arm64/crc32 - accelerated support based on x86 SSE implementation
  crypto: arm/crct10dif - port x86 SSE implementation to ARM
  crypto: arm64/crct10dif - port x86 SSE implementation to arm64
  crypto: testmgr - add/enhance test cases for CRC-T10DIF
  crypto: testmgr - avoid overlap in chunked tests
  crypto: chcr - checking for IS_ERR() instead of NULL
  crypto: caam - check caam_emi_slow instead of re-lookup platform
  crypto: algif_aead - fix AIO handling of zero buffer
  crypto: aes-ce - Make aes_simd_algs static
  crypto: algif_skcipher - set error code when kcalloc fails
  crypto: caam - make aamalg_desc a proper module
  crypto: caam - pass key buffers with typesafe pointers
  crypto: arm64/aes-ce-ccm - Fix AEAD decryption length
  MAINTAINERS: add crypto headers to crypto entry
  crypt: doc - remove misleading mention of async API
  crypto: doc - fix header file name
  crypto: api - fix comment typo
  crypto: skcipher - Add separate walker for AEAD decryption
  ..
2016-12-14 13:31:29 -08:00
Ard Biesheuvel
18e615ad87 crypto: skcipher - fix crash in virtual walk
The new skcipher walk API may crash in the following way. (Interestingly,
the tcrypt boot time tests seem unaffected, while an explicit test using
the module triggers it)

  Unable to handle kernel NULL pointer dereference at virtual address 00000000
  ...
  [<ffff000008431d84>] __memcpy+0x84/0x180
  [<ffff0000083ec0d0>] skcipher_walk_done+0x328/0x340
  [<ffff0000080c5c04>] ctr_encrypt+0x84/0x100
  [<ffff000008406d60>] simd_skcipher_encrypt+0x88/0x98
  [<ffff0000083fa05c>] crypto_rfc3686_crypt+0x8c/0x98
  [<ffff0000009b0900>] test_skcipher_speed+0x518/0x820 [tcrypt]
  [<ffff0000009b31c0>] do_test+0x1408/0x3b70 [tcrypt]
  [<ffff0000009bd050>] tcrypt_mod_init+0x50/0x1000 [tcrypt]
  [<ffff0000080838f4>] do_one_initcall+0x44/0x138
  [<ffff0000081aee60>] do_init_module+0x68/0x1e0
  [<ffff0000081524d0>] load_module+0x1fd0/0x2458
  [<ffff000008152c38>] SyS_finit_module+0xe0/0xf0
  [<ffff0000080836f0>] el0_svc_naked+0x24/0x28

This is due to the fact that skcipher_done_slow() may be entered with
walk->buffer unset. Since skcipher_walk_done() already deals with the
case where walk->buffer == walk->page, it appears to be the intention
that walk->buffer point to walk->page after skcipher_next_slow(), so
ensure that is the case.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-14 18:33:14 +08:00
Pan Bian
fbb726302a crypto: asymmetric_keys - set error code on failure
In function public_key_verify_signature(), returns variable ret on
error paths. When the call to kmalloc() fails, the value of ret is 0,
and it is not set to an errno before returning. This patch fixes the
bug.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188891

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-14 18:33:13 +08:00
Stephan Mueller
3f692d5f97 crypto: doc - clarify AEAD memory structure
The previous description have been misleading and partially incorrect.

Reported-by: Harsh Jain <harshjain.prof@gmail.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-13 16:38:06 -07:00
David S. Miller
821781a9f4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-10 16:21:55 -05:00
Linus Torvalds
045169816b Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix pointer size when caam is used with AArch64 boot loader on
     AArch32 kernel.

   - Fix ahash state corruption in marvell driver.

   - Fix buggy algif_aed tag handling.

   - Prevent mcryptd from being used with incompatible algorithms which
     can cause crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized variable warning
  crypto: mcryptd - Check mcryptd algorithm compatibility
  crypto: algif_aead - fix AEAD tag memory handling
  crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel
  crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
  crypto: marvell - Don't copy hash operation twice into the SRAM
2016-12-10 09:47:13 -08:00
Ard Biesheuvel
04b46fbdea crypto: testmgr - fix overlap in chunked tests again
Commit 7e4c7f17cd ("crypto: testmgr - avoid overlap in chunked tests")
attempted to address a problem in the crypto testmgr code where chunked
test cases are copied to memory in a way that results in overlap.

However, the fix recreated the exact same issue for other chunked tests,
by putting IDX3 within 492 bytes of IDX1, which causes overlap if the
first chunk exceeds 492 bytes, which is the case for at least one of
the xts(aes) test cases.

So increase IDX3 by another 1000 bytes.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-08 20:14:59 +08:00
Stephan Mueller
678b5c6b22 crypto: algif_aead - fix uninitialized variable warning
In case the user provided insufficient data, the code may return
prematurely without any operation. In this case, the processed
data indicated with outlen is zero.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-08 20:09:22 +08:00
Ard Biesheuvel
d31de187ac crypto: testmgr - add/enhance test cases for CRC-T10DIF
The existing test cases only exercise a small slice of the various
possible code paths through the x86 SSE/PCLMULQDQ implementation,
and the upcoming ports of it for arm64. So add one that exceeds 256
bytes in size, and convert another to a chunked test.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-07 20:01:15 +08:00
Ard Biesheuvel
7e4c7f17cd crypto: testmgr - avoid overlap in chunked tests
The IDXn offsets are chosen such that tap values (which may go up to
255) end up overlapping in the xbuf allocation. In particular, IDX1
and IDX3 are too close together, so update IDX3 to avoid this issue.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-07 20:01:13 +08:00
tim
48a992727d crypto: mcryptd - Check mcryptd algorithm compatibility
Algorithms not compatible with mcryptd could be spawned by mcryptd
with a direct crypto_alloc_tfm invocation using a "mcryptd(alg)" name
construct.  This causes mcryptd to crash the kernel if an arbitrary
"alg" is incompatible and not intended to be used with mcryptd.  It is
an issue if AF_ALG tries to spawn mcryptd(alg) to expose it externally.
But such algorithms must be used internally and not be exposed.

We added a check to enforce that only internal algorithms are allowed
with mcryptd at the time mcryptd is spawning an algorithm.

Link: http://marc.info/?l=linux-crypto-vger&m=148063683310477&w=2
Cc: stable@vger.kernel.org
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-07 19:55:37 +08:00
Stephan Mueller
0c1e16cd1e crypto: algif_aead - fix AEAD tag memory handling
For encryption, the AEAD ciphers require AAD || PT as input and generate
AAD || CT || Tag as output and vice versa for decryption. Prior to this
patch, the AF_ALG interface for AEAD ciphers requires the buffer to be
present as input for encryption. Similarly, the output buffer for
decryption required the presence of the tag buffer too. This implies
that the kernel reads / writes data buffers from/to kernel space
even though this operation is not required.

This patch changes the AF_ALG AEAD interface to be consistent with the
in-kernel AEAD cipher requirements.

Due to this handling, he changes are transparent to user space with one
exception: the return code of recv indicates the mount of output buffer.
That output buffer has a different size compared to before the patch
which implies that the return code of recv will also be different.
For example, a decryption operation uses 16 bytes AAD, 16 bytes CT and
16 bytes tag, the AF_ALG AEAD interface before showed a recv return
code of 48 (bytes) whereas after this patch, the return code is 32
since the tag is not returned any more.

Reported-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-07 19:55:36 +08:00
David S. Miller
c63d352f05 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-06 21:33:19 -05:00
Linus Torvalds
ef3263e35e Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Intermittent build failure in RSA

   - Memory corruption in chelsio crypto driver

   - Regression in DRBG due to vmalloced stack"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: rsa - Add Makefile dependencies to fix parallel builds
  crypto: chcr - Fix memory corruption
  crypto: drbg - prevent invalid SG mappings
2016-12-05 09:16:10 -08:00
Stephan Mueller
5937d81a96 crypto: algif_aead - fix AIO handling of zero buffer
Handle the case when the caller provided a zero buffer to
sendmsg/sendpage. Such scenario is legal for AEAD ciphers when no
plaintext / ciphertext and no AAD is provided and the caller only
requests the generation of the tag value.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-01 21:06:44 +08:00
Pan Bian
e2c1b82330 crypto: algif_skcipher - set error code when kcalloc fails
Fix bug https://bugzilla.kernel.org/show_bug.cgi?id=188521. In function
skcipher_recvmsg_async(), variable err takes the return value, and its
value should be negative on failures. Because variable err may be
reassigned and checked before calling kcalloc(), its value may be 0
(indicates no error) even if kcalloc() fails. This patch fixes the bug
by explicitly assigning -ENOMEM to err when kcalloc() returns a NULL
pointer.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-12-01 21:06:43 +08:00
Herbert Xu
34bc085c83 crypto: skcipher - Add separate walker for AEAD decryption
The AEAD decrypt interface includes the authentication tag in
req->cryptlen.  Therefore we need to exlucde that when doing
a walk over it.

This patch adds separate walker functions for AEAD encryption
and decryption.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2016-12-01 21:06:17 +08:00
Ard Biesheuvel
3cbf61fb9f crypto: skcipher - fix crash in skcipher_walk_aead()
The new skcipher_walk_aead() may crash in the following way due to
the walk flag SKCIPHER_WALK_PHYS not being cleared at the start of the
walk:

Unable to handle kernel NULL pointer dereference at virtual address 00000001
[..]
Internal error: Oops: 96000044 [] PREEMPT SMP
[..]
PC is at skcipher_walk_next+0x208/0x450
LR is at skcipher_walk_next+0x1e4/0x450
pc : [<ffff2b93b7104e20>] lr : [<ffff2b93b7104dfc>] pstate: 40000045
sp : ffffb925fa517940
[...]
[<ffff2b93b7104e20>] skcipher_walk_next+0x208/0x450
[<ffff2b93b710535c>] skcipher_walk_first+0x54/0x148
[<ffff2b93b7105664>] skcipher_walk_aead+0xd4/0x108
[<ffff2b93b6e77928>] ccm_encrypt+0x68/0x158

So clear the flag at the appropriate time.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 20:01:43 +08:00
Herbert Xu
479d014de5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Merge the crypto tree to pull in chelsio chcr fix.
2016-11-30 19:53:12 +08:00
David Michael
57891633ee crypto: rsa - Add Makefile dependencies to fix parallel builds
Both asn1 headers are included by rsa_helper.c, so rsa_helper.o
should explicitly depend on them.

Signed-off-by: David Michael <david.michael@coreos.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 19:46:45 +08:00
Stephan Mueller
5102981212 crypto: drbg - prevent invalid SG mappings
When using SGs, only heap memory (memory that is valid as per
virt_addr_valid) is allowed to be referenced. The CTR DRBG used to
reference the caller-provided memory directly in an SG. In case the
caller provided stack memory pointers, the SG mapping is not considered
to be valid. In some cases, this would even cause a paging fault.

The change adds a new scratch buffer that is used unconditionally to
catch the cases where the caller-provided buffer is not suitable for
use in an SG. The crypto operation of the CTR DRBG produces its output
with that scratch buffer and finally copies the content of the
scratch buffer to the caller's buffer.

The scratch buffer is allocated during allocation time of the CTR DRBG
as its access is protected with the DRBG mutex.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 19:46:44 +08:00
Eric Biggers
eb0955935e crypto: testmgr - don't use stack buffer in test_acomp()
With virtually-mapped stacks (CONFIG_VMAP_STACK=y), using the
scatterlist crypto API with stack buffers is not allowed, and with
appropriate debugging options will cause the
'BUG_ON(!virt_addr_valid(buf));' in sg_set_buf() to be triggered.
Use a heap buffer instead.

Fixes: d7db7a882d ("crypto: acomp - update testmgr with support for acomp")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:24 +08:00
Herbert Xu
cc868d82ab crypto: cbc - Export CBC implementation
This patch moves the core CBC implementation into a header file
so that it can be reused by drivers implementing CBC.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:21 +08:00
Herbert Xu
79c65d179a crypto: cbc - Convert to skcipher
This patch converts cbc over to the skcipher interface.  It also
rearranges the code to allow it to be reused by drivers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:21 +08:00
Herbert Xu
85671860ca crypto: aesni - Convert to skcipher
This patch converts aesni (including fpu) over to the skcipher
interface.  The LRW implementation has been removed as the generic
LRW code can now be used directly on top of the accelerated ECB
implementation.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:20 +08:00
Herbert Xu
eed93e0ce3 crypto: testmgr - Do not test internal algorithms
Currently we manually filter out internal algorithms using a list
in testmgr.  This is dangerous as internal algorithms cannot be
safely used even by testmgr.  This patch ensures that they're never
processed by testmgr at all.

This patch also removes an obsolete bypass for nivciphers which
no longer exist.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:20 +08:00
Herbert Xu
065ce32737 crypto: glue_helper - Add skcipher xts helpers
This patch adds xts helpers that use the skcipher interface rather
than blkcipher.  This will be used by aesni_intel.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:20 +08:00
Herbert Xu
043a44001b crypto: pcbc - Convert to skcipher
This patch converts lrw over to the skcipher interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:18 +08:00
Herbert Xu
266d051601 crypto: simd - Add simd skcipher helper
This patch adds the simd skcipher helper which is meant to be
a replacement for ablk helper.  It replaces the underlying blkcipher
interface with skcipher, and also presents the top-level algorithm
as an skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:18 +08:00
Herbert Xu
4e0958d19b crypto: cryptd - Add support for skcipher
This patch adds skcipher support to cryptd alongside ablkcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:18 +08:00
Herbert Xu
430b441cdc crypto: api - Do not clear type bits in crypto_larval_lookup
Currently all bits not set in mask are cleared in crypto_larval_lookup.
This is unnecessary as wherever the type bits are used it is always
masked anyway.

This patch removes the clearing so that we may use bits set in the
type but not in the mask for special purposes, e.g., picking up
internal algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:18 +08:00
Herbert Xu
f1c131b454 crypto: xts - Convert to skcipher
This patch converts xts over to the skcipher interface.  It also
optimises the implementation to be based on ECB instead of the
underlying cipher.  For compatibility the existing naming scheme
of xts(aes) is maintained as opposed to the more obvious one of
xts(ecb(aes)).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:18 +08:00
Herbert Xu
700cb3f5fe crypto: lrw - Convert to skcipher
This patch converts lrw over to the skcipher interface.  It also
optimises the implementation to be based on ECB instead of the
underlying cipher.  For compatibility the existing naming scheme
of lrw(aes) is maintained as opposed to the more obvious one of
lrw(ecb(aes)).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:17 +08:00
Herbert Xu
b286d8b1a6 crypto: skcipher - Add skcipher walk interface
This patch adds the skcipher walk interface which replaces both
blkcipher walk and ablkcipher walk.  Just like blkcipher walk it
can also be used for AEAD algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:17 +08:00
Jean Delvare
7cf31864e6 crypto: crc32c-vpmsum - Rename CRYPT_CRC32C_VPMSUM option
For consistency with the other 246 kernel configuration options,
rename CRYPT_CRC32C_VPMSUM to CRYPTO_CRC32C_VPMSUM.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Anton Blanchard <anton@samba.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-28 21:23:17 +08:00
David S. Miller
0b42f25d2f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
udplite conflict is resolved by taking what 'net-next' did
which removed the backlog receive method assignment, since
it is no longer necessary.

Two entries were added to the non-priv ethtool operations
switch statement, one in 'net' and one in 'net-next, so
simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-26 23:42:21 -05:00
Andrey Ryabinin
2b95fda2c4 X.509: Fix double free in x509_cert_parse() [ver ]
We shouldn't free cert->pub->key in x509_cert_parse() because
x509_free_certificate() also does this:
	BUG: Double free or freeing an invalid pointer
	...
	Call Trace:
	 [<ffffffff81896c20>] dump_stack+0x63/0x83
	 [<ffffffff81356571>] kasan_object_err+0x21/0x70
	 [<ffffffff81356ed9>] kasan_report_double_free+0x49/0x60
	 [<ffffffff813561ad>] kasan_slab_free+0x9d/0xc0
	 [<ffffffff81350b7a>] kfree+0x8a/0x1a0
	 [<ffffffff81844fbf>] public_key_free+0x1f/0x30
	 [<ffffffff818455d4>] x509_free_certificate+0x24/0x90
	 [<ffffffff818460bc>] x509_cert_parse+0x2bc/0x300
	 [<ffffffff81846cae>] x509_key_preparse+0x3e/0x330
	 [<ffffffff818444cf>] asymmetric_key_preparse+0x6f/0x100
	 [<ffffffff8178bec0>] key_create_or_update+0x260/0x5f0
	 [<ffffffff8178e6d9>] SyS_add_key+0x199/0x2a0
	 [<ffffffff821d823b>] entry_SYSCALL_64_fastpath+0x1e/0xad
	Object at ffff880110bd1900, in cache kmalloc-512 size: 512
	....
	Freed:
	PID = 2579
	[<ffffffff8104283b>] save_stack_trace+0x1b/0x20
	[<ffffffff813558f6>] save_stack+0x46/0xd0
	[<ffffffff81356183>] kasan_slab_free+0x73/0xc0
	[<ffffffff81350b7a>] kfree+0x8a/0x1a0
	[<ffffffff818460a3>] x509_cert_parse+0x2a3/0x300
	[<ffffffff81846cae>] x509_key_preparse+0x3e/0x330
	[<ffffffff818444cf>] asymmetric_key_preparse+0x6f/0x100
	[<ffffffff8178bec0>] key_create_or_update+0x260/0x5f0
	[<ffffffff8178e6d9>] SyS_add_key+0x199/0x2a0
	[<ffffffff821d823b>] entry_SYSCALL_64_fastpath+0x1e/0xad

Fixes: db6c43bd21 ("crypto: KEYS: convert public key and digsig asym to the akcipher api")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-11-25 12:57:48 +11:00
David S. Miller
f9aa9dc7d2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
All conflicts were simple overlapping changes except perhaps
for the Thunder driver.

That driver has a change_mtu method explicitly for sending
a message to the hardware.  If that fails it returns an
error.

Normally a driver doesn't need an ndo_change_mtu method becuase those
are usually just range changes, which are now handled generically.
But since this extra operation is needed in the Thunder driver, it has
to stay.

However, if the message send fails we have to restore the original
MTU before the change because the entire call chain expects that if
an error is thrown by ndo_change_mtu then the MTU did not change.
Therefore code is added to nicvf_change_mtu to remember the original
MTU, and to restore it upon nicvf_update_hw_max_frs() failue.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-22 13:27:16 -05:00
Herbert Xu
c8467f7a36 crypto: scatterwalk - Remove unnecessary aliasing check in map_and_copy
The aliasing check in map_and_copy is no longer necessary because
the IPsec ESP code no longer provides an IV that points into the
actual request data.  As this check is now triggering BUG checks
due to the vmalloced stack code, I'm removing it.

Reported-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 15:02:25 +08:00
Herbert Xu
8acf7a1063 crypto: algif_hash - Fix result clobbering in recvmsg
Recently an init call was added to hash_recvmsg so as to reset
the hash state in case a sendmsg call was never made.

Unfortunately this ended up clobbering the result if the previous
sendmsg was done with a MSG_MORE flag.  This patch fixes it by
excluding that case when we make the init call.

Fixes: a8348bca29 ("algif_hash - Fix NULL hash crash with shash")
Reported-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 15:02:24 +08:00
Stephan Mueller
8ff4c191d1 crypto: drbg - advance output buffer pointer
The CTR DRBG segments the number of random bytes to be generated into
128 byte blocks. The current code misses the advancement of the output
buffer pointer when the requestor asks for more than 128 bytes of data.
In this case, the next 128 byte block of random numbers is copied to
the beginning of the output buffer again. This implies that only the
first 128 bytes of the output buffer would ever be filled.

The patch adds the advancement of the buffer pointer to fill the entire
buffer.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-21 22:50:24 +08:00
Herbert Xu
a8348bca29 crypto: algif_hash - Fix NULL hash crash with shash
Recently algif_hash has been changed to allow null hashes.  This
triggers a bug when used with an shash algorithm whereby it will
cause a crash during the digest operation.

This patch fixes it by avoiding the digest operation and instead
doing an init followed by a final which avoids the buggy code in
shash.

This patch also ensures that the result buffer is freed after an
error so that it is not returned as a genuine hash result on the
next recv call.

The shash/ahash wrapper code will be fixed later to handle this
case correctly.

Fixes: 493b2ed3f7 ("crypto: algif_hash - Handle NULL hashes correctly")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Laura Abbott <labbott@redhat.com>
2016-11-18 22:34:10 +08:00
Alex Cope
75aa0a7caf crypto: gf128mul - Zero memory when freeing multiplication table
GF(2^128) multiplication tables are typically used for secret
information, so it's a good idea to zero them on free.

Signed-off-by: Alex Cope <alexcope@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-17 23:34:59 +08:00
Geliang Tang
e8b2fa476e crypto: jitterentropy - drop duplicate header module.h
Drop duplicate header module.h from jitterentropy-kcapi.c.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-17 23:34:52 +08:00
WANG Cong
d9dc8b0f8b net: fix sleeping for sk_wait_event()
Similar to commit 14135f30e3 ("inet: fix sleeping inside inet_wait_for_connect()"),
sk_wait_event() needs to fix too, because release_sock() is blocking,
it changes the process state back to running after sleep, which breaks
the previous prepare_to_wait().

Switch to the new wait API.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14 13:17:21 -05:00