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During access_ok checks, addr increases as we iterate over the data
structure, thus addr + len - 1 will point beyond the end of region we
are translating. Harmless since we then verify that the region covers
addr, but let's not waste cpu cycles.
Reported-by: Koichiro Den <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Acked-by: Koichiro Den <[email protected]>
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The following patch changed the behavior which originally did safe
iteration. Make it safe as it was.
12bdcbd539c6327c09da0503c674733cb2d82cb5
vhost/scsi: Don't reinvent the wheel but use existing llist API
Signed-off-by: Byungchul Park <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
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fill_balloon doing memory allocations under balloon_lock
can cause a deadlock when leak_balloon is called from
virtballoon_oom_notify and tries to take same lock.
To fix, split page allocation and enqueue and do allocations outside the lock.
Here's a detailed analysis of the deadlock by Tetsuo Handa:
In leak_balloon(), mutex_lock(&vb->balloon_lock) is called in order to
serialize against fill_balloon(). But in fill_balloon(),
alloc_page(GFP_HIGHUSER[_MOVABLE] | __GFP_NOMEMALLOC | __GFP_NORETRY) is
called with vb->balloon_lock mutex held. Since GFP_HIGHUSER[_MOVABLE]
implies __GFP_DIRECT_RECLAIM | __GFP_IO | __GFP_FS, despite __GFP_NORETRY
is specified, this allocation attempt might indirectly depend on somebody
else's __GFP_DIRECT_RECLAIM memory allocation. And such indirect
__GFP_DIRECT_RECLAIM memory allocation might call leak_balloon() via
virtballoon_oom_notify() via blocking_notifier_call_chain() callback via
out_of_memory() when it reached __alloc_pages_may_oom() and held oom_lock
mutex. Since vb->balloon_lock mutex is already held by fill_balloon(), it
will cause OOM lockup.
Thread1 Thread2
fill_balloon()
takes a balloon_lock
balloon_page_enqueue()
alloc_page(GFP_HIGHUSER_MOVABLE)
direct reclaim (__GFP_FS context) takes a fs lock
waits for that fs lock alloc_page(GFP_NOFS)
__alloc_pages_may_oom()
takes the oom_lock
out_of_memory()
blocking_notifier_call_chain()
leak_balloon()
tries to take that balloon_lock and deadlocks
Reported-by: Tetsuo Handa <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Wei Wang <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"Here is the crypto update for 4.15:
API:
- Disambiguate EBUSY when queueing crypto request by adding ENOSPC.
This change touches code outside the crypto API.
- Reset settings when empty string is written to rng_current.
Algorithms:
- Add OSCCA SM3 secure hash.
Drivers:
- Remove old mv_cesa driver (replaced by marvell/cesa).
- Enable rfc3686/ecb/cfb/ofb AES in crypto4xx.
- Add ccm/gcm AES in crypto4xx.
- Add support for BCM7278 in iproc-rng200.
- Add hash support on Exynos in s5p-sss.
- Fix fallback-induced error in vmx.
- Fix output IV in atmel-aes.
- Fix empty GCM hash in mediatek.
Others:
- Fix DoS potential in lib/mpi.
- Fix potential out-of-order issues with padata"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (162 commits)
lib/mpi: call cond_resched() from mpi_powm() loop
crypto: stm32/hash - Fix return issue on update
crypto: dh - Remove pointless checks for NULL 'p' and 'g'
crypto: qat - Clean up error handling in qat_dh_set_secret()
crypto: dh - Don't permit 'key' or 'g' size longer than 'p'
crypto: dh - Don't permit 'p' to be 0
crypto: dh - Fix double free of ctx->p
hwrng: iproc-rng200 - Add support for BCM7278
dt-bindings: rng: Document BCM7278 RNG200 compatible
crypto: chcr - Replace _manual_ swap with swap macro
crypto: marvell - Add a NULL entry at the end of mv_cesa_plat_id_table[]
hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
crypto: atmel - remove empty functions
crypto: ecdh - remove empty exit()
MAINTAINERS: update maintainer for qat
crypto: caam - remove unused param of ctx_map_to_sec4_sg()
crypto: caam - remove unneeded edesc zeroization
crypto: atmel-aes - Reset the controller before each use
crypto: atmel-aes - properly set IV after {en,de}crypt
hwrng: core - Reset user selected rng by writing "" to rng_current
...
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* pci/host-xilinx:
PCI: xilinx: Rename xilinx_pcie_link_is_up() to xilinx_pcie_link_up()
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* pci/host-xgene:
PCI: xgene: Rename xgene_pcie_probe_bridge() to xgene_pcie_probe()
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* pci/host-v3-semi:
PCI: v3-semi: Add V3 Semiconductor PCI host driver
PCI: v3: Update the device tree bindings
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* pci/host-thunder:
PCI: Avoid slot reset if bridge itself is broken
PCI: Avoid bus reset if bridge itself is broken
PCI: Mark Cavium CN8xxx to avoid bus reset
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* pci/host-tegra:
PCI: tegra: Add Tegra186 PCIe support
dt-bindings: pci: tegra: Document Tegra186 PCIe DT
PCI: tegra: Use generic accessors where possible
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* pci/host-tango:
PCI: tango: Add MSI controller support
PCI: Use of_pci_dma_range_parser_init() to reduce duplication
of/pci: Add of_pci_dma_range_parser_init() for dma-ranges parsing support
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* pci/host-layerscape:
PCI: layerscape: Change default error response behavior
PCI: Disable MSI for Freescale Layerscape PCIe RC mode
arm64: dts: ls1046a: Add PCIe controller DT nodes
arm64: dts: ls1012a: Add PCIe controller DT node
PCI: layerscape: Add support for ls1012a
arm64: dts: ls1012a: Add MSI controller DT node
irqchip/ls-scfg-msi: Add LS1012a MSI support
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* pci/host-iproc:
PCI: iproc: Allow allocation of multiple MSIs
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* pci/host-hv:
PCI: hv: Use effective affinity mask
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* pci/host-hisi:
PCI: hisi: Add HiSilicon STB SoC PCIe controller driver
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* pci/host-generic:
dt-bindings: PCI: designware: Add binding for Designware PCIe in ECAM mode
PCI: generic: Add support for Synopsys DesignWare RC in ECAM mode
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* pci/host-faraday:
PCI: faraday: Fix wrong pointer passed to PTR_ERR()
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* pci/host-dra7xx:
PCI: dra7xx: Add shutdown handler to cleanly turn off clocks
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* pci/host-altera:
PCI: altera: Rename altera_pcie_link_is_up() to altera_pcie_link_up()
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* pci/virtualization:
PCI: Document reset method return values
PCI: Detach driver before procfs & sysfs teardown on device remove
PCI: Apply Cavium ThunderX ACS quirk to more Root Ports
PCI: Set Cavium ACS capability quirk flags to assert RR/CR/SV/UF
PCI: Restore ARI Capable Hierarchy before setting numVFs
PCI: Create SR-IOV virtfn/physfn links before attaching driver
PCI: Expose SR-IOV offset, stride, and VF device ID via sysfs
PCI: Cache the VF device ID in the SR-IOV structure
PCI: Add Kconfig PCI_IOV dependency for PCI_REALLOC_ENABLE_AUTO
PCI: Remove unused function __pci_reset_function()
PCI: Remove reset argument from pci_iov_{add,remove}_virtfn()
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* pci/switchtec:
switchtec: Make struct event_regs static
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* pci/resource:
PCI: Fail pci_map_rom() if the option ROM is invalid
PCI: Move pci_map_rom() error path
x86/PCI: Enable a 64bit BAR on AMD Family 15h (Models 00-1f, 30-3f, 60-7f)
PCI: Add pci_resize_resource() for resizing BARs
PCI: Add resizable BAR infrastructure
PCI: Add PCI resource type mask #define
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* pci/portdrv:
PCI/portdrv: Turn off PCIe services during shutdown
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* pci/msi:
PCI/portdrv: Compute MSI/MSI-X IRQ vectors after final allocation
PCI/portdrv: Factor out Interrupt Message Number lookup
PCI/portdrv: Consolidate comments
PCI/portdrv: Add #defines for AER and DPC Interrupt Message Number masks
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* pci/misc:
PCI: Fix kernel-doc build warning
PCI: Move PCI_QUIRKS to the PCI bus menu
alpha/PCI: Make pdev_save_srm_config() static
PCI: Remove unused declarations
PCI: Remove redundant pci_dev, pci_bus, resource declarations
PCI: Remove redundant pcibios_set_master() declarations
PCI/PME: Handle invalid data when reading Root Status
x86/pci/intel_mid_pci: Constify intel_mid_pci_ops and make it __initconst
PCI: Constify pci_dev_type structure
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* pci/hotplug:
PCI: pciehp: Do not clear Presence Detect Changed during initialization
PCI: pciehp: Fix race condition handling surprise link down
PCI: Distribute available resources to hotplug-capable bridges
PCI: Distribute available buses to hotplug-capable bridges
PCI: Do not allocate more buses than available in parent
PCI: Open-code the two pass loop when scanning bridges
PCI: Move pci_hp_add_bridge() to drivers/pci/probe.c
PCI: Add for_each_pci_bridge() helper
PCI: shpchp: Convert timers to use timer_setup()
PCI: cpqphp: Convert timers to use timer_setup()
PCI: pciehp: Convert timers to use timer_setup()
PCI: ibmphp: Use common error handling code in unconfigure_boot_device()
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* pci/endpoint:
misc: pci_endpoint_test: Fix BUG_ON error during pci_disable_msi()
misc: pci_endpoint_test: Fix pci_endpoint_test not releasing resources on remove
misc: pci_endpoint_test: Fix failure path return values in probe
misc: pci_endpoint_test: Avoid triggering a BUG()
misc: pci_endpoint_test: Prevent some integer overflows
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* pci/aspm:
PCI/ASPM: Add L1 Substates definitions
PCI/ASPM: Reformat ASPM register definitions
PCI/ASPM: Use correct capability pointer to program LTR_L1.2_THRESHOLD
PCI/ASPM: Account for downstream device's Port Common_Mode_Restore_Time
PCI/ASPM: Deal with missing root ports in link state handling
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* pci/aer:
PCI/AER: Report non-fatal errors only to the affected endpoint
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* clk-uniphier:
clk: uniphier: fix DAPLL2 clock rate of Pro5
clk: uniphier: fix parent of miodmac clock data
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* clk-gpio:
clk: clk-gpio: Request GPIO descriptor as LOW
clk: clk-gpio: Make GPIO clock provider use descriptors only
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* clk-mediatek:
clk: mediatek: add clock support for MT7622 SoC
clk: mediatek: add clocks dt-bindings required header for MT7622 SoC
clk: mediatek: add the option for determining PLL source clock
dt-bindings: clock: mediatek: document clk bindings for MediaTek MT7622 SoC
clk: mediatek: mark mtk_infrasys_init_early __init
clk: mediatek: Add MT2712 clock support
clk: mediatek: Add dt-bindings for MT2712 clocks
dt-bindings: ARM: Mediatek: Document bindings for MT2712
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* clk-imx:
clk: imx: imx7d: Remove ARM_M0 clock
clk: imx: imx7d: Fix parent clock for OCRAM_CLK
clk: imx: clk-imx6ul: allow lcdif_pre_sel to change parent rate
clk: imx6: refine hdmi_isfr's parent to make HDMI work on i.MX6 SoCs w/o VPU
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* clk-qcom:
clk: qcom: clk-smd-rpm: add msm8996 rpmclks
clk: qcom: Implement RPM clocks for MSM8660/APQ8060
clk: qcom: Update DT bindings for the MSM8660/APQ8060 RPMCC
clk: qcom: Elaborate on "active" clocks in the RPM clock bindings
clk: qcom: Remove unused RCG ops
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* clk-at91:
clk: at91: utmi: set the mainck rate
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* clk-devm-provider:
clk: qcom: common: Migrate to devm_* APIs for resets and clk providers
clk: Add devm_of_clk_add_hw_provider()/del_provider() APIs
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* clk-const:
clk: make clk_init_data const
clk: imx: make clk_ops const
clk: mmp: make clk_ops const
clk: hisilicon: make clk_ops const
clk: mxs: make clk_ops const
clk: sirf: make clk_ops const
clk: spear: make clk_ops const
CLK: SPEAr: make aux_clk_masks structures const
CLK: SPEAr: make structure field and function argument as const
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* clk-sunxi:
clk: sunxi: explicitly request exclusive reset control
clk: sunxi: fix build warning
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* clk-hikey:
clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu'
clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep()
clk: hi3660: fix incorrect uart3 clock freqency
clk: hi6220: mark clock cs_atb_syspll as critical
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into clk-next
Pull tegra clk drivers updates from Thierry Reding:
This contains cleanups and minor fixes for the Tegra clock driver.
* tag 'tegra-for-4.15-clk-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
clk: tegra: Use readl_relaxed_poll_timeout_atomic() in tegra210_clock_init()
clk: tegra: dfll: Fix drvdata overwriting issue
clk: tegra: Fix cclk_lp divisor register
clk: tegra: Bump SCLK clock rate to 216 MHz
clk: tegra: Use common definition of APBDMA clock gate
clk: tegra: Correct parent of the APBDMA clock
clk: tegra: Add AHB DMA clock entry
clk: tegra: Mark APB clock as critical
clk: tegra: Make tegra_clk_pll_params __ro_after_init
clk: tegra: Fix sor1_out clock implementation
clk: tegra: Use tegra_clk_register_periph_data()
clk: tegra: Add peripheral clock registration helper
clk: tegra: Check BPMP response return code
dt-bindings: clock: tegra: Add sor1_out clock
firmware: tegra: Propagate error code to caller
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The parent of DAPLL2 should be DAPLL1. Fix the clock connection.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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The "miodmac" is not a child of "stdmac". They are independent
from each other. Fix it.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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Other than 'mmc_mux', 'clk_sdio0_ciu' uses a different parent mux clock.
Let's add this mux clock as 'sdio0_mux', and correct the parent of
'clk_sdio0_ciu' to be it.
Signed-off-by: Shawn Guo <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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hisi_register_clkgate_sep()
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <[email protected]>
Reviewed-by: Leo Yan <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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UART3 clock rate is doubled in previous commit.
This error is not detected until recently a mezzanine board which makes
real use of uart3 port (through LS connector of 96boards) was setup
and tested on hi3660-hikey960 board.
This patch changes clock source rate of clk_factor_uart3 to 100000000.
Signed-off-by: Zhong Kaihua <[email protected]>
Signed-off-by: Guodong Xu <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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Otherwise we can't correctly CPU map TTM buffers.
Signed-off-by: Christian König <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
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v1: Properly allocate TLB invalidation engine to avoid conflict.
v2: Added comments to codes
Signed-off-by: Oak Zeng <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Acked-by: Christian Konig <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
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When link training fail in MST case, we will divide by 0
when calculating avg_time_slots_per_mtp, so we cannot
proceed.
Signed-off-by: Eric Yang <[email protected]>
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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Signed-off-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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When disabling pipe splitting, we need to make sure we disable both
planes used.
This should be done for Linux as well.
Signed-off-by: Leo (Sunpeng) Li <[email protected]>
Reviewed-by: Tony Cheng <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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This struct is not updated on page flip and causes vblank_mode
to not work as expected
Signed-off-by: Bhawanpreet Lakha <[email protected]>
Reviewed-by: Tony Cheng <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Tested-by: Michel Dänzer <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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