linux-drm-fsl-dcu.git
8 years agocrypto: hash - add zero length message hash for shax and md5
LABBE Corentin [Thu, 17 Dec 2015 12:45:39 +0000 (13:45 +0100)]
crypto: hash - add zero length message hash for shax and md5

Some crypto drivers cannot process empty data message and return a
precalculated hash for md5/sha1/sha224/sha256.

This patch add thoses precalculated hash in include/crypto.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - fix some timeout tests
Pingchao Yang [Wed, 16 Dec 2015 06:09:50 +0000 (14:09 +0800)]
crypto: qat - fix some timeout tests

Change the timeout condition since the times value would be -1 after
running MAX_RETRY_TIMES.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yang Pingchao <pingchao.yang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - fix CTX_ENABLES bits shift direction issue
Pingchao Yang [Wed, 16 Dec 2015 02:39:40 +0000 (10:39 +0800)]
crypto: qat - fix CTX_ENABLES bits shift direction issue

AE CTX bits should be 8-15 in CTX_ENABLES, so the mask
value 0xff should be left shifted 0x8.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yang Pingchao <pingchao.yang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rsa-pkcs1pad - don't allocate buffer on stack
Andrzej Zaborowski [Sat, 12 Dec 2015 05:03:51 +0000 (00:03 -0500)]
crypto: rsa-pkcs1pad - don't allocate buffer on stack

Avoid the s390 compile "warning: 'pkcs1pad_encrypt_sign_complete'
uses dynamic stack allocation" reported by kbuild test robot.  Don't
use a flat zero-filled buffer, instead zero the contents of the SGL.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: omap - Removed unused variable "err"
Rahul Pathak [Mon, 14 Dec 2015 08:45:23 +0000 (08:45 +0000)]
crypto: omap - Removed unused variable "err"

Removed unused variable "err" and directly return "0"

Reported by coccicheck -
./drivers/crypto/omap-aes.c:542:5-8: Unneeded variable: "err". Return "0" on line 551
./drivers/crypto/omap-des.c:530:5-8: Unneeded variable: "err". Return "0" on line 539

Signed-off-by: Rahul Pathak <rpathak@visteon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: atmel-sha - Removed unused variable "err"
Rahul Pathak [Mon, 14 Dec 2015 08:44:19 +0000 (08:44 +0000)]
crypto: atmel-sha - Removed unused variable "err"

Removed unused variable "err" and directly return "0"

Reported by coccicheck -
./drivers/crypto/atmel-sha.c:758:5-8: Unneeded variable: "err". Return "0" on line 766

Signed-off-by: Rahul Pathak <rpathak@visteon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: nx-842 - Mask XERS0 bit in return value
Haren Myneni [Sun, 13 Dec 2015 11:30:41 +0000 (03:30 -0800)]
crypto: nx-842 - Mask XERS0 bit in return value

NX842 coprocessor sets 3rd bit in CR register with XER[S0] which is
nothing to do with NX request. Since this bit can be set with other
valuable return status, mast this bit.

One of other bits (INITIATED, BUSY or REJECTED) will be returned for
any given NX request.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - uint8_t is not large enough for accel_id
Tadeusz Struk [Thu, 10 Dec 2015 22:23:03 +0000 (14:23 -0800)]
crypto: qat - uint8_t is not large enough for accel_id

accel_id has to be large enough to hold ADF_MAX_DEVICES + 1
(which is > 1025) so uint8_t is too small.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: omap-des - Fix "schedule while atomic" bug
Sam Protsenko [Thu, 10 Dec 2015 16:06:59 +0000 (18:06 +0200)]
crypto: omap-des - Fix "schedule while atomic" bug

When using DES module the next bug appears:

    BUG: scheduling while atomic: kworker/0:1/63/0x00000102

With backtrace as follows:

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

[<c0012294>] (dump_backtrace) from [<c00124ac>] (show_stack+0x18/0x1c)
[<c0012494>] (show_stack) from [<c0752554>] (dump_stack+0x84/0xc4)
[<c07524d0>] (dump_stack) from [<c0750218>] (__schedule_bug+0x54/0x64)
[<c07501c4>] (__schedule_bug) from [<c07548a4>] (__schedule+0x4ac/0x53c)
[<c07543f8>] (__schedule) from [<c075496c>] (schedule+0x38/0x88)
[<c0754934>] (schedule) from [<c03c3984>] (rpm_resume+0x158/0x59c)
[<c03c382c>] (rpm_resume) from [<c03c3e1c>] (__pm_runtime_resume+0x54/0x6c)
[<c03c3dc8>] (__pm_runtime_resume) from [<c0568ff8>] (omap_des_handle_queue+0x154/0x7bc)
[<c0568ea4>] (omap_des_handle_queue) from [<c05696b8>] (omap_des_crypt+0x58/0xbc)
[<c0569660>] (omap_des_crypt) from [<c0569730>] (omap_des_cbc_decrypt+0x14/0x18)
[<c056971c>] (omap_des_cbc_decrypt) from [<c0297534>] (authenc_verify_ahash_done+0xe0/0xe8)
[<c0297454>] (authenc_verify_ahash_done) from [<c056a330>] (omap_sham_finish_req+0x58/0xa8)
[<c056a2d8>] (omap_sham_finish_req) from [<c056b714>] (omap_sham_done_task+0x1c0/0x1e0)
[<c056b554>] (omap_sham_done_task) from [<c003e53c>] (tasklet_action+0x80/0x118)
[<c003e4bc>] (tasklet_action) from [<c003e740>] (__do_softirq+0x11c/0x260)
[<c003e624>] (__do_softirq) from [<c003eb64>] (irq_exit+0xc0/0xfc)
[<c003eaa4>] (irq_exit) from [<c000f1c4>] (handle_IRQ+0x4c/0x98)
[<c000f178>] (handle_IRQ) from [<c0008568>] (gic_handle_irq+0x34/0x64)
[<c0008534>] (gic_handle_irq) from [<c0758540>] (__irq_svc+0x40/0x70)

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Insight was seen in drivers/crypto/omap-sham.c driver.
All credits for this patch go to Grygorii Strashko.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - enable VF irq after guest exits ungracefully
Zeng Xin [Thu, 10 Dec 2015 05:38:30 +0000 (21:38 -0800)]
crypto: qat - enable VF irq after guest exits ungracefully

The VF bundle interrupt is not triggered any more in
the case when guest is shut down with sample app running.
Need to clear the flag interrupt bit when restarting to fix
this irrecoverable state.

Signed-off-by: Zeng Xin <xin.zeng@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: asymmetric_keys - signature.c does not need <module.h>
Paul Gortmaker [Wed, 9 Dec 2015 20:05:28 +0000 (15:05 -0500)]
crypto: asymmetric_keys - signature.c does not need <module.h>

This file does not contain any modular related function calls.  So get
rid of module.h since it drags in a lot of other headers and adds to
the preprocessing load.  It does export some symbols though, so we'll
need to ensure it has export.h present instead.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - select PCI_IOV when VF are enabled
Tadeusz Struk [Wed, 9 Dec 2015 19:59:47 +0000 (11:59 -0800)]
crypto: qat - select PCI_IOV when VF are enabled

Fix i386-randconfig-x004-12092241.
PCI_IOV needs to be selected when VFs are enabled

Reported-by: <fengguang.wu@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - ring returning retry even though ring has BW
Harvijay Saini [Wed, 9 Dec 2015 19:59:45 +0000 (11:59 -0800)]
crypto: qat - ring returning retry even though ring has BW

When many threads submit multiple requests they get blocked until all
responses are processed, which prevents them from submitting more requests
even though there is space on the rings.
To fix this we need to decrement the inflight counter early to in the callback.

Signed-off-by: Harvijay Saini <harvijayx.saini@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: akcipher - fix typos in include/crypto/akcipher.h
LABBE Corentin [Tue, 8 Dec 2015 08:00:23 +0000 (09:00 +0100)]
crypto: akcipher - fix typos in include/crypto/akcipher.h

Fix numerous spelling error in include/crypto/akcipher.h

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: sahara - fix debug output for 64-bit dma_addr_t
Arnd Bergmann [Tue, 8 Dec 2015 15:24:22 +0000 (16:24 +0100)]
crypto: sahara - fix debug output for 64-bit dma_addr_t

The sahara_dump_descriptors and sahara_dump_links functions attempt
to print a dma_addr_t value with a 0x%08x format string, which
produces a warning when dma_addr_t is 64-bit wide:

drivers/crypto/sahara.c:419:120: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=]

This changes the code to use the %pad format string that is meant
for dma_addr_t, which avoids the warning and gives us the correct
output in all configurations.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: sahara - fix 64-bit dma_addr_t compilation
Arnd Bergmann [Tue, 8 Dec 2015 15:23:51 +0000 (16:23 +0100)]
crypto: sahara - fix 64-bit dma_addr_t compilation

The sahara hardware uses DMA descriptors with 32-bit addresses, but
dma_addr_t is variable size depending on whether we want to support
any devices that use 64-bit DMA addresses in hardware.
This means that the definition of the DMA descriptor structure is wrong,
and we helpfully get a compiler warning about them too:

drivers/crypto/sahara.c:423:372: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=]

This changes the definition of the sahara_hw_desc and sahara_hw_link
structures to only contain fixed-length members, which is required
to make the driver work on ARM LPAE mode, and avoids most of the
gcc warnings we get.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: drbg - constify drbg_state_ops structures
Julia Lawall [Mon, 7 Dec 2015 20:36:57 +0000 (21:36 +0100)]
crypto: drbg - constify drbg_state_ops structures

The drbg_state_ops structures are never modified, so declare them as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: chacha20poly1305 - Skip encryption/decryption for 0-len
Jason A. Donenfeld [Sun, 6 Dec 2015 01:51:38 +0000 (02:51 +0100)]
crypto: chacha20poly1305 - Skip encryption/decryption for 0-len

If the length of the plaintext is zero, there's no need to waste cycles
on encryption and decryption. Using the chacha20poly1305 construction
for zero-length plaintexts is a common way of using a shared encryption
key for AAD authentication.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rsa - RSA padding algorithm
Andrzej Zaborowski [Sat, 5 Dec 2015 16:09:34 +0000 (17:09 +0100)]
crypto: rsa - RSA padding algorithm

This patch adds PKCS#1 v1.5 standard RSA padding as a separate template.
This way an RSA cipher with padding can be obtained by instantiating
"pkcs1pad(rsa)".  The reason for adding this is that RSA is almost
never used without this padding (or OAEP) so it will be needed for
either certificate work in the kernel or the userspace, and I also hear
that it is likely implemented by hardware RSA in which case hardware
implementations of the whole of pkcs1pad(rsa) can be provided.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: akcipher - add akcipher declarations needed by templates.
Andrzej Zaborowski [Sat, 5 Dec 2015 16:09:33 +0000 (17:09 +0100)]
crypto: akcipher - add akcipher declarations needed by templates.

Add a struct akcipher_instance and struct akcipher_spawn similar to
how AEAD declares them and the macros for converting to/from
crypto_instance/crypto_spawn.  Also add register functions to
avoid exposing crypto_akcipher_type.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add support for c62xvf accel type
Tadeusz Struk [Sat, 5 Dec 2015 00:56:51 +0000 (16:56 -0800)]
crypto: qat - add support for c62xvf accel type

Add support for c62x accelerator Virtual Function

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add support for c3xxxvf accel type
Tadeusz Struk [Sat, 5 Dec 2015 00:56:45 +0000 (16:56 -0800)]
crypto: qat - add support for c3xxxvf accel type

Add support for c3xxx accelerator Virtual Function

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add support for c62x accel type
Tadeusz Struk [Sat, 5 Dec 2015 00:56:40 +0000 (16:56 -0800)]
crypto: qat - add support for c62x accel type

Add support for qat c62x accel type

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add support for c3xxx accel type
Tadeusz Struk [Sat, 5 Dec 2015 00:56:34 +0000 (16:56 -0800)]
crypto: qat - add support for c3xxx accel type

Add support for c3xxx accel type.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - move isr files to qat common so that they can be reused
Tadeusz Struk [Sat, 5 Dec 2015 00:56:28 +0000 (16:56 -0800)]
crypto: qat - move isr files to qat common so that they can be reused

Move qat_isr.c and qat_isrvf.c files to qat_common dir
so that they can be reused by all devices.
Remove adf_drv.h files because thay are not longer needed.
Move adf_dev_configure() function to qat_common so it can be reused.
Also some minor updates to common code for multidevice.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add support for new devices to FW loader
Pingchao Yang [Sat, 5 Dec 2015 00:56:23 +0000 (16:56 -0800)]
crypto: qat - add support for new devices to FW loader

FW loader updates for new qat devices

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - add new device definitions
Tadeusz Struk [Sat, 5 Dec 2015 00:56:17 +0000 (16:56 -0800)]
crypto: qat - add new device definitions

Add dev ids and names for the new device types.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: aead - fix kernel-doc warnings in crypto/aead.h
Randy Dunlap [Thu, 3 Dec 2015 20:00:41 +0000 (12:00 -0800)]
crypto: aead - fix kernel-doc warnings in crypto/aead.h

Fix 21 occurrences of this kernel-doc warning in <crypto/aead.h>:

..//include/crypto/aead.h:149: warning: No description found for parameter 'base'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: n2 - Use platform_register/unregister_drivers()
Thierry Reding [Wed, 2 Dec 2015 16:16:36 +0000 (17:16 +0100)]
crypto: n2 - Use platform_register/unregister_drivers()

These new helpers simplify implementing multi-driver modules and
properly handle failure to register one driver by unregistering all
previously registered drivers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: talitos - add new crypto modes
LEROY Christophe [Tue, 1 Dec 2015 11:44:15 +0000 (12:44 +0100)]
crypto: talitos - add new crypto modes

This patch adds the following algorithms to the talitos driver:
* ecb(aes)
* ctr(aes)
* ecb(des)
* cbc(des)
* ecb(des3_ede)

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: vmx - IV size failing on skcipher API
Leonidas Da Silva Barbosa [Mon, 30 Nov 2015 18:19:03 +0000 (16:19 -0200)]
crypto: vmx - IV size failing on skcipher API

IV size was zero on CBC and CTR modes,
causing a bug triggered by skcipher.

Fixing this  adding a correct size.

Signed-off-by: Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com>
Signed-off-by: Paulo Smorigo <pfsmorigo@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: caam - pass the correct buffer length
Fabio Estevam [Mon, 30 Nov 2015 13:03:58 +0000 (11:03 -0200)]
crypto: caam - pass the correct buffer length

When buffer 0 is used we should use buflen_0 instead of buflen_1.

Fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: cryptd - Assign statesize properly
Wang, Rui Y [Sun, 29 Nov 2015 14:45:34 +0000 (22:45 +0800)]
crypto: cryptd - Assign statesize properly

cryptd_create_hash() fails by returning -EINVAL.  It is because after
8996eafdc ("crypto: ahash - ensure statesize is non-zero") all ahash
drivers must have a non-zero statesize.

This patch fixes the problem by properly assigning the statesize.

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: ghash-clmulni - Fix load failure
Wang, Rui Y [Sun, 29 Nov 2015 14:45:33 +0000 (22:45 +0800)]
crypto: ghash-clmulni - Fix load failure

ghash_clmulni_intel fails to load on Linux 4.3+ with the following message:
"modprobe: ERROR: could not insert 'ghash_clmulni_intel': Invalid argument"

After 8996eafdc ("crypto: ahash - ensure statesize is non-zero") all ahash
drivers are required to implement import()/export(), and must have a non-
zero statesize.

This patch has been tested with the algif_hash interface. The calculated
digest values, after several rounds of import()s and export()s, match those
calculated by tcrypt.

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rockchip - fix possible deadlock
Heiko Stuebner [Sat, 28 Nov 2015 12:27:48 +0000 (13:27 +0100)]
crypto: rockchip - fix possible deadlock

Lockdep warns about a possible deadlock resulting from the use of regular
spin_locks:

=================================
[ INFO: inconsistent lock state ]
4.4.0-rc2+ #2724 Not tainted
---------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
ksoftirqd/0/3 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&(&crypto_info->lock)->rlock){+.?...}, at: [<bf14a65c>] rk_crypto_tasklet_cb+0x24/0xb4 [rk_crypto]
{SOFTIRQ-ON-W} state was registered at:
  [<c007f4ac>] lock_acquire+0x178/0x218
  [<c0759bac>] _raw_spin_lock+0x54/0x64
  [<bf14af88>] rk_handle_req+0x7c/0xbc [rk_crypto]
  [<bf14b040>] rk_des_ecb_encrypt+0x2c/0x30 [rk_crypto]
  [<bf14b05c>] rk_aes_ecb_encrypt+0x18/0x1c [rk_crypto]
  [<c028c820>] skcipher_encrypt_ablkcipher+0x64/0x68
  [<c0290770>] __test_skcipher+0x2a8/0x8dc
  [<c0292e94>] test_skcipher+0x38/0xc4
  [<c0292fb0>] alg_test_skcipher+0x90/0xb0
  [<c0292158>] alg_test+0x1e8/0x280
  [<c028f6f4>] cryptomgr_test+0x34/0x54
  [<c004bbe8>] kthread+0xf4/0x10c
  [<c0010010>] ret_from_fork+0x14/0x24
irq event stamp: 10672
hardirqs last  enabled at (10672): [<c002fac8>] tasklet_action+0x48/0x104
hardirqs last disabled at (10671): [<c002faa0>] tasklet_action+0x20/0x104
softirqs last  enabled at (10658): [<c002ef84>] __do_softirq+0x358/0x49c
softirqs last disabled at (10669): [<c002f108>] run_ksoftirqd+0x40/0x80

other info that might help us debug this:
Possible unsafe locking scenario:

    CPU0
    ----
  lock(&(&crypto_info->lock)->rlock);
  <Interrupt>
    lock(&(&crypto_info->lock)->rlock);

 *** DEADLOCK ***

Fix this by moving to irq-disabling spinlocks.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agohwrng: core - sleep interruptible in read
Jiri Slaby [Fri, 27 Nov 2015 15:50:43 +0000 (16:50 +0100)]
hwrng: core - sleep interruptible in read

hwrng kthread can be waiting via hwrng_fillfn for some data from a rng
like virtio-rng:
hwrng           D ffff880093e17798     0   382      2 0x00000000
...
Call Trace:
 [<ffffffff817339c6>] wait_for_completion_killable+0x96/0x210
 [<ffffffffa00aa1b7>] virtio_read+0x57/0xf0 [virtio_rng]
 [<ffffffff814f4a35>] hwrng_fillfn+0x75/0x130
 [<ffffffff810aa243>] kthread+0xf3/0x110

And when some user program tries to read the /dev node in this state,
we get:
rngd            D ffff880093e17798     0   762      1 0x00000004
...
Call Trace:
 [<ffffffff817351ac>] mutex_lock_nested+0x15c/0x3e0
 [<ffffffff814f478e>] rng_dev_read+0x6e/0x240
 [<ffffffff81231958>] __vfs_read+0x28/0xe0
 [<ffffffff81232393>] vfs_read+0x83/0x130

And this is indeed unkillable. So use mutex_lock_interruptible
instead of mutex_lock in rng_dev_read and exit immediatelly when
interrupted. And possibly return already read data, if any (as POSIX
allows).

v2: use ERESTARTSYS instead of EINTR

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: <linux-crypto@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: cryptod - use crypto_skcipher_type() for getting skcipher type
Alexander Kuleshov [Wed, 25 Nov 2015 17:48:28 +0000 (23:48 +0600)]
crypto: cryptod - use crypto_skcipher_type() for getting skcipher type

The <linux/crypto.h> provides inline function - crypto_skcipher_type().
Let's use it in the cryptd_alloc_ablkcipher() instead of direct calculation.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rockchip - add crypto driver for rk3288
Zain Wang [Wed, 25 Nov 2015 05:43:32 +0000 (13:43 +0800)]
crypto: rockchip - add crypto driver for rk3288

Crypto driver support:
     ecb(aes) cbc(aes) ecb(des) cbc(des) ecb(des3_ede) cbc(des3_ede)
You can alloc tags above in your case.

And other algorithms and platforms will be added later on.

Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rockchip - add DT bindings documentation
Zain Wang [Wed, 25 Nov 2015 05:43:30 +0000 (13:43 +0800)]
crypto: rockchip - add DT bindings documentation

Add DT bindings documentation for the rk3288 crypto drivers.

Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: nx - use of_property_read_u32()
saurabh [Mon, 23 Nov 2015 09:56:54 +0000 (15:26 +0530)]
crypto: nx - use of_property_read_u32()

use of_propert_read_u32() for reading int value,
it can help reducing number of variables used

Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: padlock-aes - use offset_in_page macro
Geliang Tang [Sat, 21 Nov 2015 14:24:11 +0000 (22:24 +0800)]
crypto: padlock-aes - use offset_in_page macro

Use offset_in_page macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - fix typo in clean-files
Jim Davis [Fri, 20 Nov 2015 00:06:19 +0000 (17:06 -0700)]
crypto: qat - fix typo in clean-files

A typo in the Makefile leaves qat_rsaprivkey-asn1.h hanging around.

Signed-off-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: picoxcell - set [src|dst]_nents and nents as signed int
LABBE Corentin [Thu, 19 Nov 2015 12:38:18 +0000 (13:38 +0100)]
crypto: picoxcell - set [src|dst]_nents and nents as signed int

The unsigned int variables [src|dst]_nents and nents can be assigned
signed value (-EINVAL) from sg_nents_for_len().
Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait
for an signed int, so they must be set as int.

Fixes: f051f95eb47b ("crypto: picoxcell - check return value of sg_nents_for_len")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: sahara - set nb_[in|out]_sg as signed int
LABBE Corentin [Thu, 19 Nov 2015 12:38:17 +0000 (13:38 +0100)]
crypto: sahara - set nb_[in|out]_sg as signed int

The two unsigned int variables nb_in_sg and nb_out_sg can be assigned
signed value (-EINVAL) from sg_nents_for_len().
Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait
for an signed int, so they must be set as int.

Fixes: 6c2b74d4774f ("crypto: sahara - check return value of sg_nents_for_len")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agohwrng: omap3-rom - convert timer to delayed work
Aaro Koskinen [Wed, 18 Nov 2015 19:59:01 +0000 (21:59 +0200)]
hwrng: omap3-rom - convert timer to delayed work

We cannot put the HW RNG to idle using a timer because we cannot disable
clocks from atomic context. Use a delayed work instead.

Fixes a warning with CONFIG_DEBUG_MUTEXES on Nokia N900 during boot.

Reported-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: atmel: fix bogus select
Arnd Bergmann [Tue, 27 Jan 2015 21:34:04 +0000 (22:34 +0100)]
crypto: atmel: fix bogus select

The Atmel at91 crypto driver unconditionally selects AT_HDMAC,
which results in a Kconfig warning if that driver is not enabled:

warning: (CRYPTO_DEV_ATMEL_AES) selects AT_HDMAC which has unmet direct dependencies (DMADEVICES && ARCH_AT91)

The crypto driver itself does not actually have a dependency
on a particular dma engine, other than this being the one that
is used in at91.

Removing the 'select' gets rid of the warning, but can cause
the driver to be unusable if the HDMAC is not enabled at the
same time. To work around that, this patch clarifies the runtime
dependency to be 'AT_HDMAC || AT_XDMAC', but adds an alternative
for COMPILE_TEST, which lets the driver get build on all systems.

The ARCH_AT91 dependency is implied by AT_XDMAC || AT_HDMAC now
and no longer needs to be listed separately.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: tcrypt - fix keysize argument of test_aead_speed for gcm(aes)
Cyrille Pitchen [Tue, 17 Nov 2015 12:37:10 +0000 (13:37 +0100)]
crypto: tcrypt - fix keysize argument of test_aead_speed for gcm(aes)

The key sizes used by AES in GCM mode should be 128, 192 or 256 bits (16,
24 or 32 bytes).
There is no additional 4byte nonce as for RFC 4106.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: atmel - fix 64-bit warnings
Arnd Bergmann [Tue, 17 Nov 2015 09:22:06 +0000 (10:22 +0100)]
crypto: atmel - fix 64-bit warnings

The atmel AES driver assumes that 'int' and 'size_t' are the same
type in multiple locations, which the compiler warns about when
building it for 64-bit systems:

In file included from ../drivers/crypto/atmel-aes.c:17:0:
drivers/crypto/atmel-aes.c: In function 'atmel_aes_sg_copy':
include/linux/kernel.h:724:17: warning: comparison of distinct pointer types lacks a cast
drivers/crypto/atmel-aes.c:448:11: note: in expansion of macro 'min'

drivers/crypto/atmel-aes.c: In function 'atmel_aes_crypt_dma_stop':
include/linux/kern_levels.h:4:18: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'size_t {aka long unsigned int}' [-Wformat=]

This changes the format strings to use the %z modifier when printing
a size_t, and makes sure that we use the correct size_t type where
needed. In case of sg_dma_len(), the type of the result depends
on CONFIG_NEED_SG_DMA_LENGTH, so we have to use min_t to get it to
work in all configurations.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: mcryptd - use list_first_entry_or_null()
Geliang Tang [Mon, 16 Nov 2015 14:37:15 +0000 (22:37 +0800)]
crypto: mcryptd - use list_first_entry_or_null()

Simplify mcryptd_opportunistic_flush() with list_first_entry_or_null().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: api - use list_first_entry_or_null and list_next_entry
Geliang Tang [Mon, 16 Nov 2015 14:37:14 +0000 (22:37 +0800)]
crypto: api - use list_first_entry_or_null and list_next_entry

Simplify crypto_more_spawns() with list_first_entry_or_null()
and list_next_entry().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: sun4i-ss - add missing statesize
LABBE Corentin [Mon, 16 Nov 2015 08:35:54 +0000 (09:35 +0100)]
crypto: sun4i-ss - add missing statesize

sun4i-ss implementaton of md5/sha1 is via ahash algorithms.
Commit 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero")
made impossible to load them without giving statesize. This patch
specifiy statesize for sha1 and md5.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Cc: <stable@vger.kernel.org> # v4.3+
Tested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: ixp4xx - Delete unnecessary checks before the function call "dma_pool_destroy"
Markus Elfring [Sun, 15 Nov 2015 15:51:21 +0000 (16:51 +0100)]
crypto: ixp4xx - Delete unnecessary checks before the function call "dma_pool_destroy"

The dma_pool_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - constify pci_error_handlers structures
Julia Lawall [Sat, 14 Nov 2015 10:06:59 +0000 (11:06 +0100)]
crypto: qat - constify pci_error_handlers structures

This pci_error_handlers structure is never modified, like all the other
pci_error_handlers structures, so declare it as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: rsa - only require output buffers as big as needed.
Andrzej Zaborowski [Fri, 13 Nov 2015 11:01:33 +0000 (12:01 +0100)]
crypto: rsa - only require output buffers as big as needed.

rhe RSA operations explicitly left-align the integers being written
skipping any leading zero bytes, but still require the output buffers to
include just enough space for the integer + the leading zero bytes.
Since the size of integer + the leading zero bytes (i.e. the key modulus
size) can now be obtained more easily through crypto_akcipher_maxsize
change the operations to only require as big a buffer as actually needed
if the caller has that information.  The semantics for request->dst_len
don't change.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agolib/mpi: only require buffers as big as needed for the integer
Andrzej Zaborowski [Fri, 13 Nov 2015 11:01:32 +0000 (12:01 +0100)]
lib/mpi: only require buffers as big as needed for the integer

Since mpi_write_to_sgl and mpi_read_buffer explicitly left-align the
integers being written it makes no sense to require a buffer big enough for
the number + the leading zero bytes which are not written.  The error
returned also doesn't convey any information.  So instead require only the
size needed and return -EOVERFLOW to signal when buffer too short.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: amcc - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:39 +0000 (21:13 +0100)]
crypto: amcc - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: caam - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:38 +0000 (21:13 +0100)]
crypto: caam - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.
We do the same for sg_count since it use sg_nents_for_len().

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: picoxcell - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:37 +0000 (21:13 +0100)]
crypto: picoxcell - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.
In the same time, we remove sg_count() as it is used as an alias of
sg_nents_for_len.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qce - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:36 +0000 (21:13 +0100)]
crypto: qce - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: sahara - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:35 +0000 (21:13 +0100)]
crypto: sahara - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: talitos - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:34 +0000 (21:13 +0100)]
crypto: talitos - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: marvell - check return value of sg_nents_for_len
LABBE Corentin [Wed, 4 Nov 2015 20:13:33 +0000 (21:13 +0100)]
crypto: marvell - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: algif - Change some variable to size_t
LABBE Corentin [Fri, 23 Oct 2015 12:10:36 +0000 (14:10 +0200)]
crypto: algif - Change some variable to size_t

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>
8 years agocrypto: qat - remove superfluous check from adf_probe
Salvatore Benedetto [Thu, 22 Oct 2015 14:23:12 +0000 (15:23 +0100)]
crypto: qat - remove superfluous check from adf_probe

- ent->device is already checked at the beginning of the function
   against the same value. This check is a duplicate.

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - fix get instance function
Tadeusz Struk [Thu, 22 Oct 2015 13:30:36 +0000 (06:30 -0700)]
crypto: qat - fix get instance function

Fix the logic in case we have found a device on a given node.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: hifn_795x - fix coding style
LABBE Corentin [Thu, 22 Oct 2015 06:51:52 +0000 (08:51 +0200)]
crypto: hifn_795x - fix coding style

The hifn_795x driver is old and have lots of style issue.
This patch try to solve easy ones.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: hifn_795x - use dev_xx/pr_xx instead of printk
LABBE Corentin [Thu, 22 Oct 2015 06:51:51 +0000 (08:51 +0200)]
crypto: hifn_795x - use dev_xx/pr_xx instead of printk

This patch replace all printk by their dev_xx/pr_xx counterpart.
The patch remove also all custom dprintk by pr_debug/dev_debug

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: hifn_795x - remove the hifn_test function
LABBE Corentin [Thu, 22 Oct 2015 06:51:50 +0000 (08:51 +0200)]
crypto: hifn_795x - remove the hifn_test function

The hifn_test function is redundant with test done at register time by
the crypto API, so remove it.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: qat - when stopping all devices make fure VF are stopped first
Tadeusz Struk [Tue, 20 Oct 2015 19:50:03 +0000 (12:50 -0700)]
crypto: qat - when stopping all devices make fure VF are stopped first

When stopping all devices make sure VFs are stopped before the
corresponding PF.
VFs will always be after PF so just need to loop back.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: talitos - Fix timing leak in ESP ICV verification
David Gstir [Sun, 15 Nov 2015 16:14:42 +0000 (17:14 +0100)]
crypto: talitos - Fix timing leak in ESP ICV verification

Using non-constant time memcmp() makes the verification of the authentication
tag in the decrypt path vulnerable to timing attacks. Fix this by using
crypto_memneq() instead.

Cc: stable@vger.kernel.org
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agocrypto: nx - Fix timing leak in GCM and CCM decryption
David Gstir [Sun, 15 Nov 2015 16:14:41 +0000 (17:14 +0100)]
crypto: nx - Fix timing leak in GCM and CCM decryption

Using non-constant time memcmp() makes the verification of the authentication
tag in the decrypt path vulnerable to timing attacks. Fix this by using
crypto_memneq() instead.

Cc: stable@vger.kernel.org
Signed-off-by: David Gstir <david@sigma-star.at>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
8 years agoLinux 4.4-rc1
Linus Torvalds [Mon, 16 Nov 2015 01:00:27 +0000 (17:00 -0800)]
Linux 4.4-rc1

8 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Nov 2015 17:36:24 +0000 (09:36 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Thomas Gleixner:
 "Mostly updates to the perf tool plus two fixes to the kernel core code:

   - Handle tracepoint filters correctly for inherited events (Peter
     Zijlstra)

   - Prevent a deadlock in perf_lock_task_context (Paul McKenney)

   - Add missing newlines to some pr_err() calls (Arnaldo Carvalho de
     Melo)

   - Print full source file paths when using 'perf annotate --print-line
     --full-paths' (Michael Petlan)

   - Fix 'perf probe -d' when just one out of uprobes and kprobes is
     enabled (Wang Nan)

   - Add compiler.h to list.h to fix 'make perf-tar-src-pkg' generated
     tarballs, i.e. out of tree building (Arnaldo Carvalho de Melo)

   - Add the llvm-src-base.c and llvm-src-kbuild.c files, generated by
     the 'perf test' LLVM entries, when running it in-tree, to
     .gitignore (Yunlong Song)

   - libbpf error reporting improvements, using a strerror interface to
     more precisely tell the user about problems with the provided
     scriptlet, be it in C or as a ready made object file (Wang Nan)

   - Do not be case sensitive when searching for matching 'perf test'
     entries (Arnaldo Carvalho de Melo)

   - Inform the user about objdump failures in 'perf annotate' (Andi
     Kleen)

   - Improve the LLVM 'perf test' entry, introduce a new ones for BPF
     and kbuild tests to check the environment used by clang to compile
     .c scriptlets (Wang Nan)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro
  tools include: Add compiler.h to list.h
  perf probe: Verify parameters in two functions
  perf session: Add missing newlines to some pr_err() calls
  perf annotate: Support full source file paths for srcline fix
  perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignore
  perf: Fix inherited events vs. tracepoint filters
  perf: Disable IRQs across RCU RS CS that acquires scheduler lock
  perf test: Do not be case sensitive when searching for matching tests
  perf test: Add 'perf test BPF'
  perf test: Enhance the LLVM tests: add kbuild test
  perf test: Enhance the LLVM test: update basic BPF test program
  perf bpf: Improve BPF related error messages
  perf tools: Make fetch_kernel_version() publicly available
  bpf tools: Add new API bpf_object__get_kversion()
  bpf tools: Improve libbpf error reporting
  perf probe: Cleanup find_perf_probe_point_from_map to reduce redundancy
  perf annotate: Inform the user about objdump failures in --stdio
  perf stat: Make stat options global
  perf sched latency: Fix thread pid reuse issue
  ...

8 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Nov 2015 17:35:33 +0000 (09:35 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "A single fix to prevent math underflow in the numa balancing code"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/numa: Fix math underflow in task_tick_numa()

8 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Nov 2015 17:34:32 +0000 (09:34 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull liblockdep fixes from Thomas Gleixner:
 "Three small patches to synchronize liblockdep with the latest core
  changes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/liblockdep: explicitly declare lockdep API we call from liblockdep
  tools/liblockdep: add userspace versions of WRITE_ONCE and RCU_INIT_POINTER
  tools/liblockdep: remove task argument from debug_check_no_locks_held

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Nov 2015 17:32:59 +0000 (09:32 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A couple of fixes and updates related to x86:

   - Fix the W+X check regression on XEN

   - The real fix for the low identity map trainwreck

   - Probe legacy PIC early instead of unconditionally allocating legacy
     irqs

   - Add cpu verification to long mode entry

   - Adjust the cache topology to AMD Fam17H systems

   - Let Merrifield use the TSC across S3"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Call verify_cpu() after having entered long mode too
  x86/setup: Fix low identity map for >= 2GB kernel range
  x86/mm: Skip the hypervisor range when walking PGD
  x86/AMD: Fix last level cache topology for AMD Fam17h systems
  x86/irq: Probe for PIC presence before allocating descs for legacy IRQs
  x86/cpu/intel: Enable X86_FEATURE_NONSTOP_TSC_S3 for Merrifield

8 years agoMerge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of git://git...
Linus Torvalds [Sun, 15 Nov 2015 17:30:48 +0000 (09:30 -0800)]
Merge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq and timer fixes from Thomas Gleixner:

 - An irq regression fix to restore the wakeup behaviour of chained
   interrupts.

 - A timer fix for a long standing race versus timers scheduled on a
   target cpu which got exposed by recent changes in the workqueue
   implementation.

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/PM: Restore system wake up from chained interrupts

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Use proper base migration in add_timer_on()

8 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sun, 15 Nov 2015 17:10:53 +0000 (09:10 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "These are the highlists of the main MIPS pull request for 4.4:

   - Add latencytop support
   - Support appended DTBs
   - VDSO support and initially use it for gettimeofday.
   - Drop the .MIPS.abiflags and ELF NOTE sections from vmlinux
   - Support for the 5KE, an internal test core.
   - Switch all MIPS platfroms to libata drivers.
   - Improved support, cleanups for ralink and Lantiq platforms.
   - Support for the new xilfpga platform.
   - A number of DTB improvments for BMIPS.
   - Improved support for CM and CPS.
   - Minor JZ4740 and BCM47xx enhancements"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (120 commits)
  MIPS: idle: add case for CPU_5KE
  MIPS: Octeon: Support APPENDED_DTB
  MIPS: vmlinux: create a section for appended DTB
  MIPS: Clean up compat_siginfo_t
  MIPS: Fix PAGE_MASK definition
  MIPS: BMIPS: Enable GZIP ramdisk and timed printks
  MIPS: Add xilfpga defconfig
  MIPS: xilfpga: Add mipsfpga platform code
  MIPS: xilfpga: Add xilfpga device tree files.
  dt-bindings: MIPS: Document xilfpga bindings and boot style
  MIPS: Make MIPS_CMDLINE_DTB default
  MIPS: Make the kernel arguments from dtb available
  MIPS: Use USE_OF as the guard for appended dtb
  MIPS: BCM63XX: Use pr_* instead of printk
  MIPS: Loongson: Cleanup CONFIG_LOONGSON_SUSPEND.
  MIPS: lantiq: Disable xbar fpi burst mode
  MIPS: lantiq: Force the crossbar to big endian
  MIPS: lantiq: Initialize the USB core on boot
  MIPS: lantiq: Return correct value for fpi clock on ar9
  MIPS: ralink: Add missing clock on rt305x
  ...

8 years agoMerge tag 'sound-fix-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Sat, 14 Nov 2015 17:43:00 +0000 (09:43 -0800)]
Merge tag 'sound-fix-4.4-rc1' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Here are a collection of small fixes tha have been gathered for
  4.4-rc1.  The only significant changes are those in PCI drivers
  Kconfig, to use "depends on" instead of "select" for CONFIG_ZONE_DMA.
  A reverse select is often more user-friendly, but in this case, it
  makes hard to manage with the conflict with ZONE_DEVICE, so changed in
  such a way for now.

  Others are all small fixes and quirks: an error check in soundcore
  reigster_chrdev(), HD-audio HDMI/DP phantom jack fix, Intel Broxton DP
  quirk, USB-audio DSD device quirk, some constifications, etc"

* tag 'sound-fix-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: pci: depend on ZONE_DMA
  ALSA: hda - Simplify phantom jack handling for HDMI/DP
  ALSA: hda/hdmi - apply Skylake fix-ups to Broxton display codec
  ALSA: ctxfi: constify rsc ops structures
  ALSA: usb: Add native DSD support for Aune X1S
  ALSA: oxfw: add an comment to Kconfig for TASCAM FireOne
  sound: fix check for error condition of register_chrdev()

8 years agoMerge tag 'arc-4.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Linus Torvalds [Sat, 14 Nov 2015 17:09:37 +0000 (09:09 -0800)]
Merge tag 'arc-4.4-rc1-part2' of git://git./linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "Found a couple of brown paper bag bugs with the prev pull request
  (including a SMP build breakage report from Guenter).  Since these are
  urgent I also decided to send over a bunch of other pending fixes
  which could have otherwise waited an rc or two.

  Summary:

   - A bunch of brown paper bag bugs (MAINTAINERS list email, SMP build
     failure)
   - cpu_relax() now compiler barrier for UP as well
   - handling of userspace Bus Errors for ARCompact builds"

* tag 'arc-4.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: Fix silly typo in MAINTAINERS file
  ARC: cpu_relax() to be compiler barrier even for UP
  ARC: use ASL assembler mnemonic
  ARC: [arcompact] Handle bus error from userspace as Interrupt not exception
  ARC: remove extraneous header include
  ARCv2: lib: memcpy: use local symbols

8 years agoARC: Fix silly typo in MAINTAINERS file
Vineet Gupta [Sat, 14 Nov 2015 07:28:53 +0000 (12:58 +0530)]
ARC: Fix silly typo in MAINTAINERS file

8 years agoARC: cpu_relax() to be compiler barrier even for UP
Vineet Gupta [Mon, 9 Nov 2015 12:18:34 +0000 (17:48 +0530)]
ARC: cpu_relax() to be compiler barrier even for UP

cpu_relax() on ARC has been barrier only for SMP (and no-op for UP). Per
recent discussions, it is safer to make it a compiler barrier
unconditionally.

Link: http://lkml.kernel.org/r/53A7D3AA.9020100@synopsys.com
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
8 years agoARC: use ASL assembler mnemonic
Vineet Gupta [Thu, 5 Nov 2015 03:43:31 +0000 (09:13 +0530)]
ARC: use ASL assembler mnemonic

ARCompact and ARCv2 only have ASL, while binutils used to support LSL as
a alias mnemonic.

Newer binutils (upstream) don't want to do that so replace it.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
8 years agoARC: [arcompact] Handle bus error from userspace as Interrupt not exception
Vineet Gupta [Fri, 30 Oct 2015 19:52:51 +0000 (01:22 +0530)]
ARC: [arcompact] Handle bus error from userspace as Interrupt not exception

Bus errors from userspace on ARCompact based cores are handled by core
as a high priority L2 interrupt but current code treated it as interrupt
Handling an interrupt like exception is certainly not going to go unnoticed.
(and it worked so far as we never saw a Bus error from userspace until
IPPK guys tested a DDR controller with ECC error detection etc hence
needed to explicitly trigger/handle such errors)

 - So move mem_service exception handler from common code into ARCv2 code.
 - In ARCompact code, define  mem_service as L2 interrupt handler which
   just drops down to pure kernel mode and goes of to enqueue SIGBUS

Reported-by: Nelson Pereira <npereira@synopsys.com>
Tested-by: Ana Martins <amartins@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
8 years agoARC: remove extraneous header include
Vineet Gupta [Fri, 30 Oct 2015 19:17:39 +0000 (00:47 +0530)]
ARC: remove extraneous header include

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
8 years agoMerge tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 14 Nov 2015 05:53:18 +0000 (21:53 -0800)]
Merge tag 'chrome-platform-4.4' of git://git./linux/kernel/git/olof/chrome-platform

Pull chrome platform updates from Olof Johansson:
 "Here's the branch of chrome platform changes for v4.4.  Some have been
  queued up for the full 4.3 release cycle since I forgot to send them
  in for that round (rebased early on to deal with fixes conflicts).

  Most of these enable EC communication stuff -- Pixel 2015 support,
  enabling building for ARM64 platforms, and a few fixes for memory
  leaks.

  There's also a patch in here to allow reading/writing the verified
  boot context, which depends on a sysfs patch acked by Greg"

* tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
  platform/chrome: Fix i2c-designware adapter name
  platform/chrome: Support reading/writing the vboot context
  sysfs: Support is_visible() on binary attributes
  platform/chrome: cros_ec: Fix possible leak in led_rgb_store()
  platform/chrome: cros_ec: Fix leak in sequence_store()
  platform/chrome: Enable Chrome platforms on 64-bit ARM
  platform/chrome: cros_ec_dev - Add a platform device ID table
  platform/chrome: cros_ec_lpc - Add support for Google Pixel 2
  platform/chrome: cros_ec_lpc - Use existing function to check EC result
  platform/chrome: Make depends on MFD_CROS_EC instead CROS_EC_PROTO
  Revert "platform/chrome: Don't make CHROME_PLATFORMS depends on X86 || ARM"

8 years agoMerge tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux...
Linus Torvalds [Sat, 14 Nov 2015 05:47:06 +0000 (21:47 -0800)]
Merge tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull another x86 platform driver update from Darren Hart:
 "Support for the unfortunately rather unique ESC key on the Ideapad
  Yoga 3 and two DMI matches for rfkill support.  Solitary fix for
  potential missed errors for asus-wmi.  Downgrade a thinkpad_acpi
  message to info.

  asus-wmi:
   - fix error handling in store_sys_wmi()

  ideapad-laptop:
   - Add Lenovo Yoga 900 to no_hw_rfkill dmi list
   - include Yoga 3 1170 in add rfkill whitelist
   - add support for Yoga 3 ESC key

  thinkpad_acpi:
   - Don't yell on unsupported brightness interfaces"

* tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  asus-wmi: fix error handling in store_sys_wmi()
  ideapad-laptop: Add Lenovo Yoga 900 to no_hw_rfkill dmi list
  ideapad-laptop: include Yoga 3 1170 in add rfkill whitelist
  ideapad-laptop: add support for Yoga 3 ESC key
  thinkpad_acpi: Don't yell on unsupported brightness interfaces

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 14 Nov 2015 05:41:14 +0000 (21:41 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull more input updates from Dmitry Torokhov:
 "An update to the tsc2005 driver that allows it to also support tsc2004
  (basically the same controller, but uses i2c instead of spi bus), and
  a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: parkbd - drop bogus __init from parkbd_allocate_serio()
  Input: elantech - add Fujitsu Lifebook U745 to force crc_enabled
  Input: tsc2004 - add support for tsc2004
  Input: tsc200x-core - rename functions and variables
  Input: tsc2005 - separate SPI and core functions

8 years agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 14 Nov 2015 04:35:54 +0000 (20:35 -0800)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull final round of SCSI updates from James Bottomley:
 "Sorry for the delay in this patch which was mostly caused by getting
  the merger of the mpt2/mpt3sas driver, which was seen as an essential
  item of maintenance work to do before the drivers diverge too much.
  Unfortunately, this caused a compile failure (detected by linux-next),
  which then had to be fixed up and incubated.

  In addition to the mpt2/3sas rework, there are updates from pm80xx,
  lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc and ufs plus
  an assortment of changes including some year 2038 issues, a fix for a
  remove before detach issue in some drivers and a couple of other minor
  issues"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
  mpt3sas: fix inline markers on non inline function declarations
  sd: Clear PS bit before Mode Select.
  ibmvscsi: set max_lun to 32
  ibmvscsi: display default value for max_id, max_lun and max_channel.
  mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()
  scsi: pmcraid: replace struct timeval with ktime_get_real_seconds()
  mvumi: 64bit value for seconds_since1970
  be2iscsi: Fix bogus WARN_ON length check
  scsi_scan: don't dump trace when scsi_prep_async_scan() is called twice
  mpt3sas: Bump mpt3sas driver version to 09.102.00.00
  mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs
  mpt2sas, mpt3sas: Update the driver versions
  mpt3sas: setpci reset kernel oops fix
  mpt3sas: Added OEM Gen2 PnP ID branding names
  mpt3sas: Refcount fw_events and fix unsafe list usage
  mpt3sas: Refcount sas_device objects and fix unsafe list usage
  mpt3sas: sysfs attribute to report Backup Rail Monitor Status
  mpt3sas: Ported WarpDrive product SSS6200 support
  mpt3sas: fix for driver fails EEH, recovery from injected pci bus error
  mpt3sas: Manage MSI-X vectors according to HBA device type
  ...

8 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 14 Nov 2015 04:04:17 +0000 (20:04 -0800)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "This series contains HCH's changes to absorb configfs attribute
  ->show() + ->store() function pointer usage from it's original
  tree-wide consumers, into common configfs code.

  It includes usb-gadget, target w/ drivers, netconsole and ocfs2
  changes to realize the improved simplicity, that now renders the
  original include/target/configfs_macros.h CPP magic for fabric drivers
  and others, unnecessary and obsolete.

  And with common code in place, new configfs attributes can be added
  easier than ever before.

  Note, there are further improvements in-flight from other folks for
  v4.5 code in configfs land, plus number of target fixes for post -rc1
  code"

In the meantime, a new user of the now-removed old configfs API came in
through the char/misc tree in commit 7bd1d4093c2f ("stm class: Introduce
an abstraction for System Trace Module devices").

This merge resolution comes from Alexander Shishkin, who updated his stm
class tracing abstraction to account for the removal of the old
show_attribute and store_attribute methods in commit 517982229f78
("configfs: remove old API") from this pull.  As Alexander says about
that patch:

 "There's no need to keep an extra wrapper structure per item and the
  awkward show_attribute/store_attribute item ops are no longer needed.

  This patch converts policy code to the new api, all the while making
  the code quite a bit smaller and easier on the eyes.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>"
That patch was folded into the merge so that the tree should be fully
bisectable.

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (23 commits)
  configfs: remove old API
  ocfs2/cluster: use per-attribute show and store methods
  ocfs2/cluster: move locking into attribute store methods
  netconsole: use per-attribute show and store methods
  target: use per-attribute show and store methods
  spear13xx_pcie_gadget: use per-attribute show and store methods
  dlm: use per-attribute show and store methods
  usb-gadget/f_serial: use per-attribute show and store methods
  usb-gadget/f_phonet: use per-attribute show and store methods
  usb-gadget/f_obex: use per-attribute show and store methods
  usb-gadget/f_uac2: use per-attribute show and store methods
  usb-gadget/f_uac1: use per-attribute show and store methods
  usb-gadget/f_mass_storage: use per-attribute show and store methods
  usb-gadget/f_sourcesink: use per-attribute show and store methods
  usb-gadget/f_printer: use per-attribute show and store methods
  usb-gadget/f_midi: use per-attribute show and store methods
  usb-gadget/f_loopback: use per-attribute show and store methods
  usb-gadget/ether: use per-attribute show and store methods
  usb-gadget/f_acm: use per-attribute show and store methods
  usb-gadget/f_hid: use per-attribute show and store methods
  ...

8 years agoMerge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 14 Nov 2015 02:02:30 +0000 (18:02 -0800)]
Merge branch 'for-linus-3' of git://git./linux/kernel/git/viro/vfs

Pull vfs xattr cleanups from Al Viro.

* 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  f2fs: xattr simplifications
  squashfs: xattr simplifications
  9p: xattr simplifications
  xattr handlers: Pass handler to operations instead of flags
  jffs2: Add missing capability check for listing trusted xattrs
  hfsplus: Remove unused xattr handler list operations
  ubifs: Remove unused security xattr handler
  vfs: Fix the posix_acl_xattr_list return value
  vfs: Check attribute names in posix acl xattr handers

8 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sat, 14 Nov 2015 01:35:48 +0000 (17:35 -0800)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:

 - three fixes tagged for -stable including a crash fix, simple
   performance tweak, and an invalid i/o error.

 - build regression fix for the nvdimm unit tests

 - nvdimm documentation update

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: fix __dax_pmd_fault crash
  libnvdimm: documentation clarifications
  libnvdimm, pmem: fix size trim in pmem_direct_access()
  libnvdimm, e820: fix numa node for e820-type-12 pmem ranges
  tools/testing/nvdimm, acpica: fix flag rename build breakage

8 years agof2fs: xattr simplifications
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:54 +0000 (19:18 +0200)]
f2fs: xattr simplifications

Now that the xattr handler is passed to the xattr handler operations, we
have access to the attribute name prefix, so simplify
f2fs_xattr_generic_list.

Also, f2fs_xattr_advise_list is only ever called for
f2fs_xattr_advise_handler; there is no need to double check for that.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <chao2.yu@samsung.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agosquashfs: xattr simplifications
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:53 +0000 (19:18 +0200)]
squashfs: xattr simplifications

Now that the xattr handler is passed to the xattr handler operations, we
have access to the attribute name prefix, so simplify the squashfs xattr
handlers a bit.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years ago9p: xattr simplifications
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:52 +0000 (19:18 +0200)]
9p: xattr simplifications

Now that the xattr handler is passed to the xattr handler operations, we
can use the same get and set operations for the user, trusted, and security
xattr namespaces.  In those namespaces, we can access the full attribute
name by "reattaching" the name prefix the vfs has skipped for us.  Add a
xattr_full_name helper to make this obvious in the code.

For the "system.posix_acl_access" and "system.posix_acl_default"
attributes, handler->prefix is the full attribute name; the suffix is the
empty string.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Cc: v9fs-developer@lists.sourceforge.net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agoxattr handlers: Pass handler to operations instead of flags
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:51 +0000 (19:18 +0200)]
xattr handlers: Pass handler to operations instead of flags

The xattr_handler operations are currently all passed a file system
specific flags value which the operations can use to disambiguate between
different handlers; some file systems use that to distinguish the xattr
namespace, for example.  In some oprations, it would be useful to also have
access to the handler prefix.  To allow that, pass a pointer to the handler
to operations instead of the flags value alone.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agojffs2: Add missing capability check for listing trusted xattrs
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:50 +0000 (19:18 +0200)]
jffs2: Add missing capability check for listing trusted xattrs

The vfs checks if a task has the appropriate access for get and set
operations, but it cannot do that for the list operation; the file system
must check for that itself.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agohfsplus: Remove unused xattr handler list operations
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:49 +0000 (19:18 +0200)]
hfsplus: Remove unused xattr handler list operations

The list operations can never be called; they are even documented to be
unused.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agoubifs: Remove unused security xattr handler
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:48 +0000 (19:18 +0200)]
ubifs: Remove unused security xattr handler

Ubifs installs a security xattr handler in sb->s_xattr but doesn't use the
generic_{get,set,list,remove}xattr inode operations needed for processing
this list of attribute handlers; the handler is never called.  Instead,
ubifs uses its own xattr handlers which also process security xattrs.

Remove the dead code.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-mtd@lists.infradead.org
Cc: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
8 years agovfs: Fix the posix_acl_xattr_list return value
Andreas Gruenbacher [Tue, 3 Nov 2015 14:25:08 +0000 (15:25 +0100)]
vfs: Fix the posix_acl_xattr_list return value

When a filesystem that contains POSIX ACLs is mounted without ACL support
(-o noacl), the appropriate behavior is not to list any existing POSIX ACL
xattrs.  The return value for list xattr handlers in this case is 0, not an
error code: several filesystems that use the POSIX ACL xattr handlers do
not expect the list operation to fail.

Symlinks cannot have ACLs, so posix_acl_xattr_list will never be called for
symlinks in the first place.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>