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2013-10-25ima: provide support for arbitrary hash algorithmsDmitry Kasatkin
In preparation of supporting more hash algorithms with larger hash sizes needed for signature verification, this patch replaces the 20 byte sized digest, with a more flexible structure. The new structure includes the hash algorithm, digest size, and digest. Changelog: - recalculate filedata hash for the measurement list, if the signature hash digest size is greater than 20 bytes. - use generic HASH_ALGO_ - make ima_calc_file_hash static - scripts lindent and checkpatch fixes Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-10-25keys: change asymmetric keys to use common hash definitionsDmitry Kasatkin
This patch makes use of the newly defined common hash algorithm info, replacing, for example, PKEY_HASH with HASH_ALGO. Changelog: - Lindent fixes - Mimi CC: David Howells <dhowells@redhat.com> Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-10-25crypto: provide single place for hash algo informationDmitry Kasatkin
This patch provides a single place for information about hash algorithms, such as hash sizes and kernel driver names, which will be used by IMA and the public key code. Changelog: - Fix sparse and checkpatch warnings - Move hash algo enums to uapi for userspace signing functions. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-25X.509: add module description and licenseKonstantin Khlebnikov
This patch fixes lack of license, otherwise x509_key_parser.ko taints kernel. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25KEYS: verify a certificate is signed by a 'trusted' keyMimi Zohar
Only public keys, with certificates signed by an existing 'trusted' key on the system trusted keyring, should be added to a trusted keyring. This patch adds support for verifying a certificate's signature. This is derived from David Howells pkcs7_request_asymmetric_key() patch. Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25KEYS: Set the asymmetric-key type default search methodDavid Howells
The keyring expansion patches introduces a new search method by which key_search() attempts to walk directly to the key that has exactly the same description as the requested one. However, this causes inexact matching of asymmetric keys to fail. The solution to this is to select iterative rather than direct search as the default search type for asymmetric keys. As an example, the kernel might have a key like this: Magrathea: Glacier signing key: 6a2a0f82bad7e396665f465e4e3e1f9bd24b1226 and: keyctl search <keyring-ID> asymmetric id:d24b1226 should find the key, despite that not being its exact description. Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25X.509: Remove certificate date checksDavid Howells
Remove the certificate date checks that are performed when a certificate is parsed. There are two checks: a valid from and a valid to. The first check is causing a lot of problems with system clocks that don't keep good time and the second places an implicit expiry date upon the kernel when used for module signing, so do we really need them? Signed-off-by: David Howells <dhowells@redhat.com> cc: David Woodhouse <dwmw2@infradead.org> cc: Rusty Russell <rusty@rustcorp.com.au> cc: Josh Boyer <jwboyer@redhat.com> cc: Alexander Holler <holler@ahsoftware.de> cc: stable@vger.kernel.org
2013-09-25X.509: Handle certificates that lack an authorityKeyIdentifier fieldDavid Howells
Handle certificates that lack an authorityKeyIdentifier field by assuming they're self-signed and checking their signatures against themselves. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25X.509: Check the algorithm IDs obtained from parsing an X.509 certificateDavid Howells
Check that the algorithm IDs obtained from the ASN.1 parse by OID lookup corresponds to algorithms that are available to us. Reported-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Howells <dhowells@redhat.com>
2013-09-25X.509: Embed public_key_signature struct and create filler functionDavid Howells
Embed a public_key_signature struct in struct x509_certificate, eliminating now unnecessary fields, and split x509_check_signature() to create a filler function for it that attaches a digest of the signed data and an MPI that represents the signature data. x509_free_certificate() is then modified to deal with these. Whilst we're at it, export both x509_check_signature() and the new x509_get_sig_params(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25X.509: struct x509_certificate needs struct tm declaringDavid Howells
struct x509_certificate needs struct tm declaring by #inclusion of linux/time.h prior to its definition. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Split public_key_verify_signature() and make availableDavid Howells
Modify public_key_verify_signature() so that it now takes a public_key struct rather than a key struct and supply a wrapper that takes a key struct. The wrapper is then used by the asymmetric key subtype and the modified function is used by X.509 self-signature checking and can be used by other things also. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Store public key algo ID in public_key structDavid Howells
Store public key algo ID in public_key struct for reference purposes. This allows it to be removed from the x509_certificate struct and used to find a default in public_key_verify_signature(). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Move the algorithm pointer array from x509 to public_key.cDavid Howells
Move the public-key algorithm pointer array from x509_public_key.c to public_key.c as it isn't X.509 specific. Note that to make this configure correctly, the public key part must be dependent on the RSA module rather than the other way round. This needs a further patch to make use of the crypto module loading stuff rather than using a fixed table. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-25KEYS: Rename public key parameter name arraysDavid Howells
Rename the arrays of public key parameters (public key algorithm names, hash algorithm names and ID type names) so that the array name ends in "_name". Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Josh Boyer <jwboyer@redhat.com>
2013-09-12crypto: crct10dif - Add fallback for broken initrdsHerbert Xu
Unfortunately, even with a softdep some distros fail to include the necessary modules in the initrd. Therefore this patch adds a fallback path to restore existing behaviour where we cannot load the new crypto crct10dif algorithm. In order to do this, the underlying crct10dif has been split out from the crypto implementation so that it can be used on the fallback path. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-08crypto: api - Fix race condition in larval lookupHerbert Xu
crypto_larval_lookup should only return a larval if it created one. Any larval created by another entity must be processed through crypto_larval_wait before being returned. Otherwise this will lead to a larval being killed twice, which will most likely lead to a crash. Cc: stable@vger.kernel.org Reported-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto update from Herbert Xu: "Here is the crypto update for 3.12: - Added MODULE_SOFTDEP to allow pre-loading of modules. - Reinstated crct10dif driver using the module softdep feature. - Allow via rng driver to be auto-loaded. - Split large input data when necessary in nx. - Handle zero length messages correctly for GCM/XCBC in nx. - Handle SHA-2 chunks bigger than block size properly in nx. - Handle unaligned lengths in omap-aes. - Added SHA384/SHA512 to omap-sham. - Added OMAP5/AM43XX SHAM support. - Added OMAP4 TRNG support. - Misc fixes" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (66 commits) Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework" hwrng: via - Add MODULE_DEVICE_TABLE crypto: fcrypt - Fix bitoperation for compilation with clang crypto: nx - fix SHA-2 for chunks bigger than block size crypto: nx - fix GCM for zero length messages crypto: nx - fix XCBC for zero length messages crypto: nx - fix limits to sg lists for AES-CCM crypto: nx - fix limits to sg lists for AES-XCBC crypto: nx - fix limits to sg lists for AES-GCM crypto: nx - fix limits to sg lists for AES-CTR crypto: nx - fix limits to sg lists for AES-CBC crypto: nx - fix limits to sg lists for AES-ECB crypto: nx - add offset to nx_build_sg_lists() padata - Register hotcpu notifier after initialization padata - share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED hwrng: omap - reorder OMAP TRNG driver code crypto: omap-sham - correct dma burst size crypto: omap-sham - Enable Polling mode if DMA fails crypto: tegra-aes - bitwise vs logical and crypto: sahara - checking the wrong variable ...
2013-09-07Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto ↵Herbert Xu
transform framework" This patch reinstates commits 67822649d7305caf3dd50ed46c27b99c94eff996 39761214eefc6b070f29402aa1165f24d789b3f7 0b95a7f85718adcbba36407ef88bba0a7379ed03 31d939625a9a20b1badd2d4e6bf6fd39fa523405 2d31e518a42828df7877bca23a958627d60408bc Now that module softdeps are in the kernel we can use that to resolve the boot issue which cause the revert. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-09-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linuxHerbert Xu
Merge upstream tree in order to reinstate crct10dif.
2013-09-02crypto: fcrypt - Fix bitoperation for compilation with clangJan-Simon Möller
v2: Fix bug in statement as pointed out by Herbert Xu. Kudos to pipacs. Author: PaX Team <pageexec at freemail.hu> ML-Post: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html URL: http://llvm.linuxfoundation.org Merge: Jan-Simon Möller <dl9pf at gmx.de> Description: Fix for warning: linux/crypto/fcrypt.c:143:47: warning: signed shift result (0x598000000) requires 36 bits to represent, but 'int' only has 32 bits [-Wshift-overflow] Z(0xef), Z(0x70), Z(0xcf), Z(0xc2), Z(0x2a), Z(0xb3), Z(0x61), Z(0xad), ^~~~~~~ linux/crypto/fcrypt.c:113:29: note: expanded from macro 'Z' ^ ~~ linux/include/uapi/linux/byteorder/little_endian.h:38:53: note: expanded from macro '__cpu_to_be32' ^ linux/include/uapi/linux/swab.h:116:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ linux/include/uapi/linux/swab.h:18:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ ^ Solution - make sure we don't exceed the 32 bit range. #define Z(x) cpu_to_be32(((x & 0x1f) << 27) | (x >> 5)) Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> CC: pageexec@freemail.hu CC: llvmlinux@lists.linuxfoundation.org CC: behanw@converseincode.com CC: herbert@gondor.apana.org.au CC: davem@davemloft.net CC: linux-crypto@vger.kernel.org CC: linux-kernel@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-08-21crypto: scatterwalk - Add support for calculating number of SG elementsJoel Fernandes
Crypto layer only passes nbytes to encrypt but in omap-aes driver we need to know number of SG elements to pass to dmaengine slave API. We add function for the same to scatterwalk library. Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-08-21crypto: camellia_generic - replace commas by semicolons and adjust code ↵Julia Lawall
alignment Adjust alignment and replace commas by semicolons in automatically generated code. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-08-20crypto: fix typo in commentCristian Stoica
Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-08-14crypto: make tables used from assembler __visibleAndi Kleen
Tables used from assembler should be marked __visible to let the compiler know. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-08-01crypto: testmgr - remove double execution of the same test suiteCristian Stoica
This patch removes redundant execution of the same test suite in cases where alg and driver variables are the same (e.g. when alg_test is called from tcrypt_test) Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com> Reviewed-by: Horia Geanta <horia.geanta@freescale.com> Reviewed-by: Ruchika Gupta <ruchika.gupta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-07-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto fixes from Herbert Xu: "This push fixes a memory corruption issue in caam, as well as reverting the new optimised crct10dif implementation as it breaks boot on initrd systems. Hopefully crct10dif will be reinstated once the supporting code is added so that it doesn't break boot" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework" crypto: caam - Fixed the memory out of bound overwrite issue
2013-07-24Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto ↵Herbert Xu
transform framework" This reverts commits 67822649d7305caf3dd50ed46c27b99c94eff996 39761214eefc6b070f29402aa1165f24d789b3f7 0b95a7f85718adcbba36407ef88bba0a7379ed03 31d939625a9a20b1badd2d4e6bf6fd39fa523405 2d31e518a42828df7877bca23a958627d60408bc Unfortunately this change broke boot on some systems that used an initrd which does not include the newly created crct10dif modules. As these modules are required by sd_mod under certain configurations this is a serious problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-07-09crypto: add lz4 Cryptographic APIChanho Min
Add support for lz4 and lz4hc compression algorithm using the lib/lz4/* codebase. [akpm@linux-foundation.org: fix warnings] Signed-off-by: Chanho Min <chanho.min@lge.com> Cc: "Darrick J. Wong" <djwong@us.ibm.com> Cc: Bob Pearson <rpearson@systemfabricworks.com> Cc: Richard Weinberger <richard@nod.at> Cc: Herbert Xu <herbert@gondor.hengli.com.au> Cc: Yann Collet <yann.collet.73@gmail.com> Cc: Kyungsik Lee <kyungsik.lee@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto update from Herbert Xu: - Do not idle omap device between crypto operations in one session. - Added sha224/sha384 shims for SSSE3. - More optimisations for camellia-aesni-avx2. - Removed defunct blowfish/twofish AVX2 implementations. - Added unaligned buffer self-tests. - Added PCLMULQDQ optimisation for CRCT10DIF. - Added support for Freescale's DCP co-processor - Misc fixes. * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (44 commits) crypto: testmgr - test hash implementations with unaligned buffers crypto: testmgr - test AEADs with unaligned buffers crypto: testmgr - test skciphers with unaligned buffers crypto: testmgr - check that entries in alg_test_descs are in correct order Revert "crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher" Revert "crypto: blowfish - add AVX2/x86_64 implementation of blowfish cipher" crypto: camellia-aesni-avx2 - tune assembly code for more performance hwrng: bcm2835 - fix MODULE_LICENSE tag hwrng: nomadik - use clk_prepare_enable() crypto: picoxcell - replace strict_strtoul() with kstrtoul() crypto: dcp - Staticize local symbols crypto: dcp - Use NULL instead of 0 crypto: dcp - Use devm_* APIs crypto: dcp - Remove redundant platform_set_drvdata() hwrng: use platform_{get,set}_drvdata() crypto: omap-aes - Don't idle/start AES device between Encrypt operations crypto: crct10dif - Use PTR_RET crypto: ux500 - Cocci spatch "resource_size.spatch" crypto: sha256_ssse3 - add sha224 support crypto: sha512_ssse3 - add sha384 support ...
2013-07-03drivers/dma: remove unused support for MEMSET operationsBartlomiej Zolnierkiewicz
There have never been any real users of MEMSET operations since they have been introduced in January 2007 by commit 7405f74badf4 ("dmaengine: refactor dmaengine around dma_async_tx_descriptor"). Therefore remove support for them for now, it can be always brought back when needed. [sebastian.hesselbarth@gmail.com: fix drivers/dma/mv_xor] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Vinod Koul <vinod.koul@intel.com> Acked-by: Dan Williams <djbw@fb.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Olof Johansson <olof@lixom.net> Cc: Kevin Hilman <khilman@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03drivers: avoid format strings in names passed to alloc_workqueue()Kees Cook
For the workqueue creation interfaces that do not expect format strings, make sure they cannot accidently be parsed that way. Additionally, clean up calls made with a single parameter that would be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03crypto: sanitize argument for format stringKees Cook
The template lookup interface does not provide a way to use format strings, so make sure that the interface cannot be abused accidentally. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-25crypto: algboss - Hold ref count on larvalHerbert Xu
On Thu, Jun 20, 2013 at 10:00:21AM +0200, Daniel Borkmann wrote: > After having fixed a NULL pointer dereference in SCTP 1abd165e ("net: > sctp: fix NULL pointer dereference in socket destruction"), I ran into > the following NULL pointer dereference in the crypto subsystem with > the same reproducer, easily hit each time: > > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [<ffffffff81070321>] __wake_up_common+0x31/0x90 > PGD 0 > Oops: 0000 [#1] SMP > Modules linked in: padlock_sha(F-) sha256_generic(F) sctp(F) libcrc32c(F) [..] > CPU: 6 PID: 3326 Comm: cryptomgr_probe Tainted: GF 3.10.0-rc5+ #1 > Hardware name: Dell Inc. PowerEdge T410/0H19HD, BIOS 1.6.3 02/01/2011 > task: ffff88007b6cf4e0 ti: ffff88007b7cc000 task.ti: ffff88007b7cc000 > RIP: 0010:[<ffffffff81070321>] [<ffffffff81070321>] __wake_up_common+0x31/0x90 > RSP: 0018:ffff88007b7cde08 EFLAGS: 00010082 > RAX: ffffffffffffffe8 RBX: ffff88003756c130 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88003756c130 > RBP: ffff88007b7cde48 R08: 0000000000000000 R09: ffff88012b173200 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 > R13: ffff88003756c138 R14: 0000000000000000 R15: 0000000000000000 > FS: 0000000000000000(0000) GS:ffff88012fc60000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000000 CR3: 0000000001a0b000 CR4: 00000000000007e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Stack: > ffff88007b7cde28 0000000300000000 ffff88007b7cde28 ffff88003756c130 > 0000000000000282 ffff88003756c128 ffffffff81227670 0000000000000000 > ffff88007b7cde78 ffffffff810722b7 ffff88007cdcf000 ffffffff81a90540 > Call Trace: > [<ffffffff81227670>] ? crypto_alloc_pcomp+0x20/0x20 > [<ffffffff810722b7>] complete_all+0x47/0x60 > [<ffffffff81227708>] cryptomgr_probe+0x98/0xc0 > [<ffffffff81227670>] ? crypto_alloc_pcomp+0x20/0x20 > [<ffffffff8106760e>] kthread+0xce/0xe0 > [<ffffffff81067540>] ? kthread_freezable_should_stop+0x70/0x70 > [<ffffffff815450dc>] ret_from_fork+0x7c/0xb0 > [<ffffffff81067540>] ? kthread_freezable_should_stop+0x70/0x70 > Code: 41 56 41 55 41 54 53 48 83 ec 18 66 66 66 66 90 89 75 cc 89 55 c8 > 4c 8d 6f 08 48 8b 57 08 41 89 cf 4d 89 c6 48 8d 42 e > RIP [<ffffffff81070321>] __wake_up_common+0x31/0x90 > RSP <ffff88007b7cde08> > CR2: 0000000000000000 > ---[ end trace b495b19270a4d37e ]--- > > My assumption is that the following is happening: the minimal SCTP > tool runs under ``echo 1 > /proc/sys/net/sctp/auth_enable'', hence > it's making use of crypto_alloc_hash() via sctp_auth_init_hmacs(). > It forks itself, heavily allocates, binds, listens and waits in > accept on sctp sockets, and then randomly kills some of them (no > need for an actual client in this case to hit this). Then, again, > allocating, binding, etc, and then killing child processes. > > The problem that might be happening here is that cryptomgr requests > the module to probe/load through cryptomgr_schedule_probe(), but > before the thread handler cryptomgr_probe() returns, we return from > the wait_for_completion_interruptible() function and probably already > have cleared up larval, thus we run into a NULL pointer dereference > when in cryptomgr_probe() complete_all() is being called. > > If we wait with wait_for_completion() instead, this panic will not > occur anymore. This is valid, because in case a signal is pending, > cryptomgr_probe() returns from probing anyway with properly calling > complete_all(). The use of wait_for_completion_interruptible is intentional so that we don't lock up the thread if a bug causes us to never wake up. This bug is caused by the helper thread using the larval without holding a reference count on it. If the helper thread completes after the original thread requesting for help has gone away and destroyed the larval, then we get the crash above. So the fix is to hold a reference count on the larval. Cc: <stable@vger.kernel.org> # 3.6+ Reported-by: Daniel Borkmann <dborkman@redhat.com> Tested-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21crypto: testmgr - test hash implementations with unaligned buffersJussi Kivilinna
This patch adds unaligned buffer tests for hashes. The first new test is with one byte offset and the second test checks if cra_alignmask for driver is big enough; for example, for testing a case where cra_alignmask is set to 7, but driver really needs buffers to be aligned to 16 bytes. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21crypto: testmgr - test AEADs with unaligned buffersJussi Kivilinna
This patch adds unaligned buffer tests for AEADs. The first new test is with one byte offset and the second test checks if cra_alignmask for driver is big enough; for example, for testing a case where cra_alignmask is set to 7, but driver really needs buffers to be aligned to 16 bytes. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21crypto: testmgr - test skciphers with unaligned buffersJussi Kivilinna
This patch adds unaligned buffer tests for blkciphers. The first new test is with one byte offset and the second test checks if cra_alignmask for driver is big enough; for example, for testing a case where cra_alignmask is set to 7, but driver really needs buffers to be aligned to 16 bytes. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21crypto: testmgr - check that entries in alg_test_descs are in correct orderJussi Kivilinna
Patch adds check for alg_test_descs list order, so that accidentically misplaced entries are found quicker. Duplicate entries are also checked for. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21Revert "crypto: twofish - add AVX2/x86_64 assembler implementation of ↵Jussi Kivilinna
twofish cipher" This reverts commit cf1521a1a5e21fd1e79a458605c4282fbfbbeee2. Instruction (vpgatherdd) that this implementation relied on turned out to be slow performer on real hardware (i5-4570). The previous 8-way twofish/AVX implementation is therefore faster and this implementation should be removed. Converting this implementation to use the same method as in twofish/AVX for table look-ups would give additional ~3% speed up vs twofish/AVX, but would hardly be worth of the added code and binary size. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-21Revert "crypto: blowfish - add AVX2/x86_64 implementation of blowfish cipher"Jussi Kivilinna
This reverts commit 604880107010a1e5794552d184cd5471ea31b973. Instruction (vpgatherdd) that this implementation relied on turned out to be slow performer on real hardware (i5-4570). The previous 4-way blowfish implementation is therefore faster and this implementation should be removed. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-05crypto: blowfish - disable AVX2 implementationJussi Kivilinna
It appears that the performance of 'vpgatherdd' is suboptimal for this kind of workload (tested on Core i5-4570) and causes blowfish-avx2 to be significantly slower than blowfish-amd64. So disable the AVX2 implementation to avoid performance regressions. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-06-05crypto: twofish - disable AVX2 implementationJussi Kivilinna
It appears that the performance of 'vpgatherdd' is suboptimal for this kind of workload (tested on Core i5-4570) and causes twofish_avx2 to be significantly slower than twofish_avx. So disable the AVX2 implementation to avoid performance regressions. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-28crypto: sha512_generic - set cra_driver_nameJussi Kivilinna
'sha512_generic' should set driver name now that there is alternative sha512 provider (sha512_ssse3). Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-24crypto: crct10dif - Simple correctness and speed test for CRCT10DIF hashTim Chen
These are simple tests to do sanity check of CRC T10 DIF hash. The correctness of the transform can be checked with the command modprobe tcrypt mode=47 The speed of the transform can be evaluated with the command modprobe tcrypt mode=320 Set the cpu frequency to constant and turn turbo off when running the speed test so the frequency governor will not tweak the frequency and affects the measurements. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-24crypto: crct10dif - Glue code to cast accelerated CRCT10DIF assembly as a ↵Tim Chen
crypto transform Glue code that plugs the PCLMULQDQ accelerated CRC T10 DIF hash into the crypto framework. The config CRYPTO_CRCT10DIF_PCLMUL should be turned on to enable the feature. The crc_t10dif crypto library function will use this faster algorithm when crct10dif_pclmul module is loaded. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-20crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform ↵Tim Chen
framework When CRC T10 DIF is calculated using the crypto transform framework, we wrap the crc_t10dif function call to utilize it. This allows us to take advantage of any accelerated CRC T10 DIF transform that is plugged into the crypto framework. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-05-05Merge tag 'modules-next-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull mudule updates from Rusty Russell: "We get rid of the general module prefix confusion with a binary config option, fix a remove/insert race which Never Happens, and (my favorite) handle the case when we have too many modules for a single commandline. Seriously, the kernel is full, please go away!" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: modpost: fix unwanted VMLINUX_SYMBOL_STR expansion X.509: Support parse long form of length octets in Authority Key Identifier module: don't unlink the module until we've removed all exposure. kernel: kallsyms: memory override issue, need check destination buffer length MODSIGN: do not send garbage to stderr when enabling modules signature modpost: handle huge numbers of modules. modpost: add -T option to read module names from file/stdin. modpost: minor cleanup. genksyms: pass symbol-prefix instead of arch module: fix symbol versioning with symbol prefixes CONFIG_SYMBOL_PREFIX: cleanup.
2013-05-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto update from Herbert Xu: - XTS mode optimisation for twofish/cast6/camellia/aes on x86 - AVX2/x86_64 implementation for blowfish/twofish/serpent/camellia - SSSE3/AVX/AVX2 optimisations for sha256/sha512 - Added driver for SAHARA2 crypto accelerator - Fix for GMAC when used in non-IPsec secnarios - Added generic CMAC implementation (including IPsec glue) - IP update for crypto/atmel - Support for more than one device in hwrng/timeriomem - Added Broadcom BCM2835 RNG driver - Misc fixes * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (59 commits) crypto: caam - fix job ring cleanup code crypto: camellia - add AVX2/AES-NI/x86_64 assembler implementation of camellia cipher crypto: serpent - add AVX2/x86_64 assembler implementation of serpent cipher crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher crypto: blowfish - add AVX2/x86_64 implementation of blowfish cipher crypto: tcrypt - add async cipher speed tests for blowfish crypto: testmgr - extend camellia test-vectors for camellia-aesni/avx2 crypto: aesni_intel - fix Kconfig problem with CRYPTO_GLUE_HELPER_X86 crypto: aesni_intel - add more optimized XTS mode for x86-64 crypto: x86/camellia-aesni-avx - add more optimized XTS code crypto: cast6-avx: use new optimized XTS code crypto: x86/twofish-avx - use optimized XTS code crypto: x86 - add more optimized XTS-mode for serpent-avx xfrm: add rfc4494 AES-CMAC-96 support crypto: add CMAC support to CryptoAPI crypto: testmgr - add empty test vectors for null ciphers crypto: testmgr - add AES GMAC test vectors crypto: gcm - fix rfc4543 to handle async crypto correctly crypto: gcm - make GMAC work when dst and src are different hwrng: timeriomem - added devicetree hooks ...
2013-04-29raid6test: use prandom_bytes()Akinobu Mita
Use prandom_bytes() to generate random bytes for test data. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Dan Williams <djbw@fb.com> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-25crypto: camellia - add AVX2/AES-NI/x86_64 assembler implementation of ↵Jussi Kivilinna
camellia cipher Patch adds AVX2/AES-NI/x86-64 implementation of Camellia cipher, requiring 32 parallel blocks for input (512 bytes). Compared to AVX implementation, this version is extended to use the 256-bit wide YMM registers. For AES-NI instructions data is split to two 128-bit registers and merged afterwards. Even with this additional handling, performance should be higher compared to the AES-NI/AVX implementation. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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