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* crypto: prefix module autoloading with "crypto-"Kees Cook2014-11-2495-123/+155
| | | | | | | | | | | This prefixes all crypto module loading with "crypto-" so we never run the risk of exposing module auto-loading to userspace via a crypto API, as demonstrated by Mathias Krause: https://lkml.org/lkml/2013/3/4/70 Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: user - Allow get request with empty driver nameHerbert Xu2014-11-241-4/+1
| | | | | | | | Currently all get requests with an empty driver name fail with EINVAL. Since most users actually want to supply an empty driver name this patch removes this check. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* ARM: at91/dt: add trng node to at91sam9g45Boris Brezillon2014-11-201-0/+7
| | | | | | | | | | | Add a DT node for the TRNG (True Random Number Generator) block. Keep this block enabled as it does not depend on any external connection, and thus should be available on all boards. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* hwrng: atmel - Add TRNG DT binding docBoris Brezillon2014-11-201-0/+16
| | | | | | | | | Document DT bindings of Atmel's TRNG (True Random Number Generator) IP. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Peter Korsgaard <peter@korsgaard.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* hwrng: atmel - add DT supportBoris Brezillon2014-11-202-1/+8
| | | | | | | | | | | | Add DT support. Make the driver depend on CONFIG_OF as at91sam9g45 was the only SoC making use of the TRNG block and this SoC is now fully migrated to DT. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Peter Korsgaard <peter@korsgaard.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* hwrng: atmel - use clk_prepapre_enable/_disable_unprepareBoris Brezillon2014-11-201-4/+4
| | | | | | | | | | Use clk_prepare_enable/_disable_unprepare instead of clk_enable/disable to work properly with the CCF. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Peter Korsgaard <peter@korsgaard.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: bfin_crc - don't include linux/unaligned/access_ok.hJohannes Berg2014-11-201-1/+1
| | | | | | | | | This is a specific implementation, <asm/unaligned.h> is the multiplexer that has the arch-specific knowledge of which of the implementations needs to be used, so include that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: crc32 - Add ARM64 CRC32 hw accelerated moduleYazen Ghannam2014-11-203-0/+282
| | | | | | | | | | | | | | | | This module registers a crc32 algorithm and a crc32c algorithm that use the optional CRC32 and CRC32C instructions in ARMv8. Tested on AMD Seattle. Improvement compared to crc32c-generic algorithm: TCRYPT CRC32C speed test shows ~450% speedup. Simple dd write tests to btrfs filesystem show ~30% speedup. Signed-off-by: Yazen Ghannam <yazen.ghannam@linaro.org> Acked-by: Steve Capper <steve.capper@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: qat - Use memzero_explicitStruk, Tadeusz2014-11-171-14/+22
| | | | | | | Use the new memzero_explicit function to cleanup sensitive data. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - document uncovered member variablesStephan Mueller2014-11-171-1/+6
| | | | | | | | | Fix documentation typo for shash_alg->descsize. Add documentation for initially uncovered member variables. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: caam - Remove unnecessary smp_read_barrier_depends()Pranith Kumar2014-11-171-3/+0
| | | | | | | | | Recently lockless_dereference() was added which can be used in place of hard-coding smp_read_barrier_depends(). The following PATCH makes the change. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - HASH API documentationStephan Mueller2014-11-131-0/+119
| | | | | | | | The API function calls exported by the kernel crypto API for message digests to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - CIPHER API documentationStephan Mueller2014-11-131-0/+89
| | | | | | | | The API function calls exported by the kernel crypto API for signle block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - BLKCIPHER API documentationStephan Mueller2014-11-131-0/+188
| | | | | | | | The API function calls exported by the kernel crypto API for synchronous block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - AEAD API documentationStephan Mueller2014-11-131-0/+251
| | | | | | | | The API function calls exported by the kernel crypto API for AEAD ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - ABLKCIPHER API documentationStephan Mueller2014-11-131-0/+206
| | | | | | | | The API function calls exported by the kernel crypto API for asynchronous block ciphers to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - cipher data structuresStephan Mueller2014-11-131-3/+243
| | | | | | | | | | The data structure of struct crypto_alg together with various other data structures needed by cipher developers is documented wit all parameters that can be set by a developer of a transformation. All parameters that are internal to the crypto API are marked as such. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - SHASH API documentationStephan Mueller2014-11-131-0/+164
| | | | | | | | The API function calls exported by the kernel crypto API for SHASHes to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - AHASH API documentationStephan Mueller2014-11-131-0/+228
| | | | | | | | The API function calls exported by the kernel crypto API for AHASHes to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - hash data structuresStephan Mueller2014-11-131-0/+95
| | | | | | | | The hash data structures needed to be filled in by cipher developers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - RNG API documentationStephan Mueller2014-11-131-0/+80
| | | | | | | | The API function calls exported by the kernel crypto API for RNGs to be used by consumers are documented. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - userspace interface specStephan Mueller2014-11-131-0/+205
| | | | | | | | | | | | | | The userspace interface of the kernel crypto API is documented with * a general explanation * a discussion of the memory in-place operation * the description of the message digest API * the description of the symmetric cipher API The documentation refers to libkcapi as a working example on how to use the kernel crypto API from user space. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - compile crypto API specStephan Mueller2014-11-131-1/+1
| | | | | | | | Add the crypto API documentation into the DocBook Makefile to allow it being compiled Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: doc - crypto API high level specStephan Mueller2014-11-131-0/+1253
| | | | | | | | | | | | | | | The design of the kernel crypto API as well as hints to program with the kernel crypto API are given. The documentation contains: * design aspects of crypto API * develper specific hints * references to the API function description * source code examples CC: Marek Vasut <marex@denx.de> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: caam - add support for givencrypt cbc(des) and cbc(des3_ede)Catalin Vasile2014-11-121-4/+6
| | | | | | | | Merge DES Cipher Block Chaining mode (CBC) and Triple DES Cipher Block Chaining mode (CBC) algorithms from ablkcipher to givencrypt. Signed-off-by: Catalin Vasile <catalin.vasile@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: algif - zeroize IV bufferStephan Mueller2014-11-121-0/+1
| | | | | | | | | Zeroize the buffer holding the IV used for the completed cipher operation before the buffer is released by the skcipher AF_ALG interface handler. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* crypto: algif - zeroize message digest bufferStephan Mueller2014-11-121-0/+2
| | | | | | | | | Zeroize the buffer holding the message digest calculated for the consumer before the buffer is released by the hash AF_ALG interface handler. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linuxHerbert Xu2014-11-121139-10258/+21117
|\ | | | | | | Merging 3.18-rc4 in order to pick up the memzero_explicit helper.
| * Linux 3.18-rc4v3.18-rc4Linus Torvalds2014-11-091-1/+1
| |
| * Merge tag 'arm64-fixes' of ↵Linus Torvalds2014-11-093-3/+27
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - enable bpf syscall for compat - cpu_suspend fix when checking the idle state type - defconfig update * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: defconfig: update defconfig for 3.18 arm64: compat: Enable bpf syscall arm64: psci: fix cpu_suspend to check idle state type for index
| | * arm64: defconfig: update defconfig for 3.18Will Deacon2014-11-051-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables a few things missing from our defconfig: - PCI and MSI, including support for the x-gene host controller - BPF JIT - SPI, GPIO and MMC for Seattle - GPIO for x-gene - USB for Juno - RTC It also removes HMC_DRV, which was being built as a module for some reason. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| | * arm64: compat: Enable bpf syscallCatalin Marinas2014-11-051-0/+2
| | | | | | | | | | | | | | | | | | | | | Following the arm32 commit 2d605a302972 (ARM: enable bpf syscall), wire this syscall for arm64 compat as well. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| | * arm64: psci: fix cpu_suspend to check idle state type for indexAmit Daniel Kachhap2014-10-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fix rectifies the psci cpu_suspend implementation to check the PSCI power state parameter type field associated with the requested idle state index. Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
| * | Merge tag 'armsoc-for-rc4' of ↵Linus Torvalds2014-11-099-90/+160
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Another quiet week: - a fix to silence edma probe error on non-supported platforms from Arnd - a fix to enable the PL clock for Parallella, to make mainline usable with the SDK. - a somewhat verbose fix for the PLL clock tree on VF610 - enabling of SD/MMC on one of the VF610-based boards (for testing) - a fix for i.MX where CONFIG_SPI used to be implicitly enabled and now needs to be added to the defconfig instead - another maintainer added for bcm2835: Lee Jones" * tag 'armsoc-for-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: zynq: Enable PL clocks for Parallella dma: edma: move device registration to platform code ARM: dts: vf610: add SD node to cosmic dts MAINTAINERS: update bcm2835 entry ARM: imx: Fix the removal of CONFIG_SPI option ARM: imx: clk-vf610: define PLL's clock tree
| | * | ARM: dts: zynq: Enable PL clocks for ParallellaAndreas Färber2014-11-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Parallella board comes with a U-Boot bootloader that loads one of two predefined FPGA bitstreams before booting the kernel. Both define an AXI interface to the on-board Epiphany processor. Enable clocks FCLK0..FCLK3 for the Programmable Logic by default. Otherwise accessing, e.g., the ESYSRESET register freezes the board, as seen with the Epiphany SDK tools e-reset and e-hw-rev, using /dev/mem. Cc: <stable@vger.kernel.org> # 3.17.x Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | dma: edma: move device registration to platform codeArnd Bergmann2014-11-052-39/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The horrible split between the low-level part of the edma support and the dmaengine front-end driver causes problems on multiplatform kernels. This is an attempt to improve the situation slightly by only registering the dmaengine devices that are actually present. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [olof: add missing include of linux/dma-mapping.h] Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | ARM: dts: vf610: add SD node to cosmic dtsOlof Johansson2014-11-051-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver has been there since a while back, but the dts never seems to have been updated with the node (nor pinctrl). Do so now. Cc: Matt Porter <mporter@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | MAINTAINERS: update bcm2835 entryStephen Warren2014-11-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Lee Jones as a new co-maintainer. The kernel.org repo moved to allow us both to push to it. Update MAINTAINERS to match. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | Merge tag 'imx-fixes-3.18-2' of ↵Olof Johansson2014-11-04509-3962/+4647
| | |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes Merge "ARM: imx: fixes for 3.18, 2nd round" from Shawn Guo: "This is the second round of i.MX fixes for 3.18. The clk-vf610 fix is relatively big, because it needs some adaption to the change made by offending commit dc4805c2e78b (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3 driver). And it should have been sent to you for earlier -rc inclusion, but unfortunately it got delayed for some time because Stefan wasn't aware of my email address change." The i.MX fixes for 3.18, 2nd round: - Fix a regression on Vybrid platform which is caused by commit dc4805c2e78b (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3 driver), and results in a missing configuration on PLL clocks. - Fix a regression with i.MX defconfig files where CONFIG_SPI option gets lost accidentally. * tag 'imx-fixes-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (460 commits) ARM: imx: Fix the removal of CONFIG_SPI option ARM: imx: clk-vf610: define PLL's clock tree + Linux 3.18-rc3 Signed-off-by: Olof Johansson <olof@lixom.net>
| | | * | ARM: imx: Fix the removal of CONFIG_SPI optionFabio Estevam2014-11-042-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 64546e9fe3a5b8c ("ARM: imx_v6_v7_defconfig updates") and commit 0650f855d2e4b0b9 ("ARM: imx_v4_v5_defconfig: Select CONFIG_IMX_WEIM") CONFIG_SPI selection was dropped by savedefconfig for imx_v4_v5_defconfig and imx_v6_v7_defconfig. In order to keep the same behaviour as previous kernel versions and avoid regressions, let's add CONFIG_SPI option back. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
| | | * | ARM: imx: clk-vf610: define PLL's clock treeStefan Agner2014-11-042-50/+123
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far, the required PLL's (PLL1/PLL2/PLL5) have been initialized by boot loader and the kernel code defined fixed rates according to those default configurations. Beginning with the USB PLL7 the code started to initialize the PLL's itself (using imx_clk_pllv3). However, since commit dc4805c2e78ba5a22ea1632f3e3e4ee601a1743b (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3 driver) imx_clk_pllv3 no longer takes care of the ENABLE and BYPASS bits, hence the USB PLL were not configured correctly anymore. This patch not only fixes those USB PLL's, but also makes use of the imx_clk_pllv3 for all PLL's and alignes the code with the PLL support of the i.MX6 series. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
| * | | | Merge branch 'devicetree/merge' of ↵Linus Torvalds2014-11-094-86/+154
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux Pull devicetree bugfix from Grant Likely: "One buffer overflow bug that shouldn't be left around" * 'devicetree/merge' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: of: Fix overflow bug in string property parsing functions
| | * | | | of: Fix overflow bug in string property parsing functionsGrant Likely2014-11-044-86/+154
| | | |/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The string property read helpers will run off the end of the buffer if it is handed a malformed string property. Rework the parsers to make sure that doesn't happen. At the same time add new test cases to make sure the functions behave themselves. The original implementations of of_property_read_string_index() and of_property_count_strings() both open-coded the same block of parsing code, each with it's own subtly different bugs. The fix here merges functions into a single helper and makes the original functions static inline wrappers around the helper. One non-bugfix aspect of this patch is the addition of a new wrapper, of_property_read_string_array(). The new wrapper is needed by the device_properties feature that Rafael is working on and planning to merge for v3.19. The implementation is identical both with and without the new static inline wrapper, so it just got left in to reduce the churn on the header file. Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Darren Hart <darren.hart@intel.com> Cc: <stable@vger.kernel.org> # v3.3+: Drop selftest hunks that don't apply
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2014-11-091-1/+1
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fix from Chris Mason: "It's a one liner for an error cleanup path that leads to crashes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup
| | * | | | Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanupChris Mason2014-11-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we hit any errors in btrfs_lookup_csums_range, we'll loop through all the csums we allocate and free them. But the code was using list_entry incorrectly, and ended up trying to free the on-stack list_head instead. This bug came from commit 0678b6185 btrfs: Don't BUG_ON kzalloc error in btrfs_lookup_csums_range() Signed-off-by: Chris Mason <clm@fb.com> Reported-by: Erik Berg <btrfs@slipsprogrammoer.no> cc: stable@vger.kernel.org # 3.3 or newer
| * | | | | Merge tag 'driver-core-3.18-rc4' of ↵Linus Torvalds2014-11-092-9/+14
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core fixes from Greg KH: "Here are 3 tiny fixes for 3.18-rc4. One fixes up a long-stading race condition in the driver core for removing directories in /sys/devices/virtual/ and the other 2 fix up the wording of a new Kconfig option that was added in 3.18-rc1" * tag 'driver-core-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP tiny: reverse logic for DISABLE_DEV_COREDUMP sysfs: driver core: Fix glue dir race condition by gdp_mutex
| | * | | | | tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMPJohannes Berg2014-11-071-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ENABLE_DEV_COREDUMP option is misleading as it implies that it gets the framework enabled, this isn't true it just allows it to get enabled if a driver needs it. Rename it to ALLOW_DEV_COREDUMP to better capture its semantics. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| | * | | | | tiny: reverse logic for DISABLE_DEV_COREDUMPAristeu Rozanski2014-11-071-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's desirable for allnconfig and tinyconfig targets to result in the least amount of code possible. DISABLE_DEV_COREDUMP exists as a way to switch off DEV_COREDUMP regardless if any drivers select WANT_DEV_COREDUMP. This patch renames the option to ENABLE_DEV_COREDUMP and setting it to 'n' (as in allnconfig or tinyconfig) will effectively disable device coredump. Cc: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Aristeu Rozanski <arozansk@redhat.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| | * | | | | sysfs: driver core: Fix glue dir race condition by gdp_mutexYijing Wang2014-11-071-1/+3
| | | |/ / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a race condition when removing glue directory. It can be reproduced in following test: path 1: Add first child device device_add() get_device_parent() /*find parent from glue_dirs.list*/ list_for_each_entry(k, &dev->class->p->glue_dirs.list, entry) if (k->parent == parent_kobj) { kobj = kobject_get(k); break; } .... class_dir_create_and_add() path2: Remove last child device under glue dir device_del() cleanup_device_parent() cleanup_glue_dir() kobject_put(glue_dir); If path2 has been called cleanup_glue_dir(), but not call kobject_put(glue_dir), the glue dir is still in parent's kset list. Meanwhile, path1 find the glue dir from the glue_dirs.list. Path2 may release glue dir before path1 call kobject_get(). So kernel will report the warning and bug_on. This is a "classic" problem we have of a kref in a list that can be found while the last instance could be removed at the same time. This patch reuse gdp_mutex to fix this race condition. The following calltrace is captured in kernel 3.4, but the latest kernel still has this bug. ----------------------------------------------------- <4>[ 3965.441471] WARNING: at ...include/linux/kref.h:41 kobject_get+0x33/0x40() <4>[ 3965.441474] Hardware name: Romley <4>[ 3965.441475] Modules linked in: isd_iop(O) isd_xda(O)... ... <4>[ 3965.441605] Call Trace: <4>[ 3965.441611] [<ffffffff8103717a>] warn_slowpath_common+0x7a/0xb0 <4>[ 3965.441615] [<ffffffff810371c5>] warn_slowpath_null+0x15/0x20 <4>[ 3965.441618] [<ffffffff81215963>] kobject_get+0x33/0x40 <4>[ 3965.441624] [<ffffffff812d1e45>] get_device_parent.isra.11+0x135/0x1f0 <4>[ 3965.441627] [<ffffffff812d22d4>] device_add+0xd4/0x6d0 <4>[ 3965.441631] [<ffffffff812d0dbc>] ? dev_set_name+0x3c/0x40 .... <2>[ 3965.441912] kernel BUG at ..../fs/sysfs/group.c:65! <4>[ 3965.441915] invalid opcode: 0000 [#1] SMP ... <4>[ 3965.686743] [<ffffffff811a677e>] sysfs_create_group+0xe/0x10 <4>[ 3965.686748] [<ffffffff810cfb04>] blk_trace_init_sysfs+0x14/0x20 <4>[ 3965.686753] [<ffffffff811fcabb>] blk_register_queue+0x3b/0x120 <4>[ 3965.686756] [<ffffffff812030bc>] add_disk+0x1cc/0x490 .... ------------------------------------------------------- Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Weng Meiling <wengmeiling.weng@huawei.com> Cc: <stable@vger.kernel.org> #3.4+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | | Merge tag 'staging-3.18-rc4' of ↵Linus Torvalds2014-11-096-54/+20
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver fixes from Greg KH: "Here are some staging/iio fixes for 3.18-rc4. Nothing major, just a few bugfixes of things that have been reported" * tag 'staging-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging:iio:ade7758: Remove "raw" from channel name staging:iio:ade7758: Fix check if channels are enabled in prenable staging:iio:ade7758: Fix NULL pointer deref when enabling buffer iio: as3935: allocate correct iio_device size io: accel: kxcjk-1013: Fix iio_event_spec direction iio: tsl4531: Fix compiler error when CONFIG_PM_OPS is not defined iio: adc: mxs-lradc: Disable the clock on probe failure iio: st_sensors: Fix buffer copy staging:iio:ad5933: Drop "raw" from channel names staging:iio:ad5933: Fix NULL pointer deref when enabling buffer
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-03 17:18:12 +0000