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refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
This patch uses refcount_inc_not_zero() instead of
atomic_inc_not_zero_hint() due to absense of a _hint()
version of refcount API. If the hint() version must
be used, we might need to revisit API.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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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 4.12:
API:
- Add batch registration for acomp/scomp
- Change acomp testing to non-unique compressed result
- Extend algorithm name limit to 128 bytes
- Require setkey before accept(2) in algif_aead
Algorithms:
- Add support for deflate rfc1950 (zlib)
Drivers:
- Add accelerated crct10dif for powerpc
- Add crc32 in stm32
- Add sha384/sha512 in ccp
- Add 3des/gcm(aes) for v5 devices in ccp
- Add Queue Interface (QI) backend support in caam
- Add new Exynos RNG driver
- Add ThunderX ZIP driver
- Add driver for hardware random generator on MT7623 SoC"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (101 commits)
crypto: stm32 - Fix OF module alias information
crypto: algif_aead - Require setkey before accept(2)
crypto: scomp - add support for deflate rfc1950 (zlib)
crypto: scomp - allow registration of multiple scomps
crypto: ccp - Change ISR handler method for a v5 CCP
crypto: ccp - Change ISR handler method for a v3 CCP
crypto: crypto4xx - rename ce_ring_contol to ce_ring_control
crypto: testmgr - Allow ecb(cipher_null) in FIPS mode
Revert "crypto: arm64/sha - Add constant operand modifier to ASM_EXPORT"
crypto: ccp - Disable interrupts early on unload
crypto: ccp - Use only the relevant interrupt bits
hwrng: mtk - Add driver for hardware random generator on MT7623 SoC
dt-bindings: hwrng: Add Mediatek hardware random generator bindings
crypto: crct10dif-vpmsum - Fix missing preempt_disable()
crypto: testmgr - replace compression known answer test
crypto: acomp - allow registration of multiple acomps
hwrng: n2 - Use devm_kcalloc() in n2rng_probe()
crypto: chcr - Fix error handling related to 'chcr_alloc_shash'
padata: get_next is never NULL
crypto: exynos - Add new Exynos RNG driver
...
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Some cipher implementations will crash if you try to use them
without calling setkey first. This patch adds a check so that
the accept(2) call will fail with -ENOKEY if setkey hasn't been
done on the socket yet.
Fixes: 400c40cf78da ("crypto: algif - add AEAD support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The algif_aead completion function tries to deduce the aead_request
from the crypto_async_request argument. This is broken because
the API does not guarantee that the same request will be pased to
the completion function. Only the value of req->data can be used
in the completion function.
This patch fixes it by storing a pointer to sk in areq and using
that instead of passing in sk through req->data.
Fixes: 83094e5e9e49 ("crypto: af_alg - add async support to...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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<linux/sched.h> into <linux/sched/signal.h>
Fix up affected files that include this signal functionality via sched.h.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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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>
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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
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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>
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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
..
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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>
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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>
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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>
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Similar to commit 14135f30e33c ("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>
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Following the async change for algif_skcipher
this patch adds similar async read to algif_aead.
changes in v3:
- add call to aead_reset_ctx directly from aead_put_sgl instead of calling
them separatelly one after the other
- remove wait from aead_sock_destruct function as it is not needed
when sock_hold is used
changes in v2:
- change internal data structures from fixed size arrays, limited to
RSGL_MAX_ENTRIES, to linked list model with no artificial limitation.
- use sock_kmalloc instead of kmalloc for memory allocation
- use sock_hold instead of separate atomic ctr to wait for outstanding
request
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Pull networking updates from Davic Miller:
1) Support busy polling generically, for all NAPI drivers. From Eric
Dumazet.
2) Add byte/packet counter support to nft_ct, from Floriani Westphal.
3) Add RSS/XPS support to mvneta driver, from Gregory Clement.
4) Implement IPV6_HDRINCL socket option for raw sockets, from Hannes
Frederic Sowa.
5) Add support for T6 adapter to cxgb4 driver, from Hariprasad Shenai.
6) Add support for VLAN device bridging to mlxsw switch driver, from
Ido Schimmel.
7) Add driver for Netronome NFP4000/NFP6000, from Jakub Kicinski.
8) Provide hwmon interface to mlxsw switch driver, from Jiri Pirko.
9) Reorganize wireless drivers into per-vendor directories just like we
do for ethernet drivers. From Kalle Valo.
10) Provide a way for administrators "destroy" connected sockets via the
SOCK_DESTROY socket netlink diag operation. From Lorenzo Colitti.
11) Add support to add/remove multicast routes via netlink, from Nikolay
Aleksandrov.
12) Make TCP keepalive settings per-namespace, from Nikolay Borisov.
13) Add forwarding and packet duplication facilities to nf_tables, from
Pablo Neira Ayuso.
14) Dead route support in MPLS, from Roopa Prabhu.
15) TSO support for thunderx chips, from Sunil Goutham.
16) Add driver for IBM's System i/p VNIC protocol, from Thomas Falcon.
17) Rationalize, consolidate, and more completely document the checksum
offloading facilities in the networking stack. From Tom Herbert.
18) Support aborting an ongoing scan in mac80211/cfg80211, from
Vidyullatha Kanchanapally.
19) Use per-bucket spinlock for bpf hash facility, from Tom Leiming.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1375 commits)
net: bnxt: always return values from _bnxt_get_max_rings
net: bpf: reject invalid shifts
phonet: properly unshare skbs in phonet_rcv()
dwc_eth_qos: Fix dma address for multi-fragment skbs
phy: remove an unneeded condition
mdio: remove an unneed condition
mdio_bus: NULL dereference on allocation error
net: Fix typo in netdev_intersect_features
net: freescale: mac-fec: Fix build error from phy_device API change
net: freescale: ucc_geth: Fix build error from phy_device API change
bonding: Prevent IPv6 link local address on enslaved devices
IB/mlx5: Add flow steering support
net/mlx5_core: Export flow steering API
net/mlx5_core: Make ipv4/ipv6 location more clear
net/mlx5_core: Enable flow steering support for the IB driver
net/mlx5_core: Initialize namespaces only when supported by device
net/mlx5_core: Set priority attributes
net/mlx5_core: Connect flow tables
net/mlx5_core: Introduce modify flow table command
net/mlx5_core: Managing root flow table
...
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Conflicts:
drivers/net/ethernet/renesas/ravb_main.c
kernel/bpf/syscall.c
net/ipv4/ipmr.c
All three conflicts were cases of overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The memory barrier in the helper wq_has_sleeper is needed by just
about every user of waitqueue_active. This patch generalises it
by making it take a wait_queue_head_t directly. The existing
helper is renamed to skwq_has_sleeper.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
"Algorithms:
- Add RSA padding algorithm
Drivers:
- Add GCM mode support to atmel
- Add atmel support for SAMA5D2 devices
- Add cipher modes to talitos
- Add rockchip driver for rk3288
- Add qat support for C3XXX and C62X"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (103 commits)
crypto: hifn_795x, picoxcell - use ablkcipher_request_cast
crypto: qat - fix SKU definiftion for c3xxx dev
crypto: qat - Fix random config build issue
crypto: ccp - use to_pci_dev and to_platform_device
crypto: qat - Rename dh895xcc mmp firmware
crypto: 842 - remove WARN inside printk
crypto: atmel-aes - add debug facilities to monitor register accesses.
crypto: atmel-aes - add support to GCM mode
crypto: atmel-aes - change the DMA threshold
crypto: atmel-aes - fix the counter overflow in CTR mode
crypto: atmel-aes - fix atmel-ctr-aes driver for RFC 3686
crypto: atmel-aes - create sections to regroup functions by usage
crypto: atmel-aes - fix typo and indentation
crypto: atmel-aes - use SIZE_IN_WORDS() helper macro
crypto: atmel-aes - improve performances of data transfer
crypto: atmel-aes - fix atmel_aes_remove()
crypto: atmel-aes - remove useless AES_FLAGS_DMA flag
crypto: atmel-aes - reduce latency of DMA completion
crypto: atmel-aes - remove unused 'err' member of struct atmel_aes_dev
crypto: atmel-aes - rework crypto request completion
...
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Some variable are set as int but store only positive values.
Furthermore there are used in operation/function that wait for unsigned
value.
This patch set them as size_t.
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch is a cleanup to make following patch easier to
review.
Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
from (struct socket)->flags to a (struct socket_wq)->flags
to benefit from RCU protection in sock_wake_async()
To ease backports, we rename both constants.
Two new helpers, sk_set_bit(int nr, struct sock *sk)
and sk_clear_bit(int net, struct sock *sk) are added so that
following patch can change their implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The tsgl scatterlist must be re-initialized after each
operation. Otherwise the sticky bits in the page_link will corrupt the
list with pre-mature termination or false chaining.
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch removes the CRYPTO_ALG_AEAD_NEW flag now that everyone
has been converted.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As the AEAD conversion is still ongoing, we do not yet wish to
export legacy AEAD implementations to user-space, as their calling
convention will change.
This patch actually disables all AEAD algorithms because some of
them (e.g., cryptd) will need to be modified to propagate this flag.
Subsequent patches will reenable them on an individual basis.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch makes use of the new AEAD interface which uses a single
SG list instead of separate lists for the AD and plain text.
Note that the user-space interface now requires both input and
output to be of the same length, and both must include space for
the AD as well as the authentication tag.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Merge the crypto tree for 4.1 to pull in the changeset that disables
algif_aead.
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This patch fixes it.
Also minor updates to comments.
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
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The networking updates from David Miller removed the iocb argument from
sendmsg and recvmsg (in commit 1b784140474e: "net: Remove iocb argument
from sendmsg and recvmsg"), but the crypto code had added new instances
of them.
When I pulled the crypto update, it was a silent semantic mis-merge, and
I overlooked the new warning messages in my test-build. I try to fix
those in the merge itself, but that relies on me noticing. Oh well.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch adds the AEAD support for AF_ALG.
The implementation is based on algif_skcipher, but contains heavy
modifications to streamline the interface for AEAD uses.
To use AEAD, the user space consumer has to use the salg_type named
"aead".
The AEAD implementation includes some overhead to calculate the size of
the ciphertext, because the AEAD implementation of the kernel crypto API
makes implied assumption on the location of the authentication tag. When
performing an encryption, the tag will be added to the created
ciphertext (note, the tag is placed adjacent to the ciphertext). For
decryption, the caller must hand in the ciphertext with the tag appended
to the ciphertext. Therefore, the selection of the used memory
needs to add/subtract the tag size from the source/destination buffers
depending on the encryption type. The code is provided with comments
explaining when and how that operation is performed.
A fully working example using all aspects of AEAD is provided at
http://www.chronox.de/libkcapi.html
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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