1. 15 Oct, 2020 20 commits
  2. 14 Oct, 2020 20 commits
    • Linus Torvalds's avatar
      Merge tag 'spdx-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx · 3e4fb434
      Linus Torvalds authored
      Pull SPDX updates from Greg KH:
       "Here are some SPDX-specific changes for 5.10-rc1.
      
        They include:
      
         - driver fixes to make spdxcheck.pl work properly
      
         - add GFDL licenses as "deprecated" but required due to some of our
           documentation using them
      
         - add Zlib license as "deprecated" but required because we have code
           with this license in the tree.
      
         - convert some drivers to have SPDX identifiers that previously
           didn't have them.
      
        All have been in linux-next for a very long time with no reported
        issues"
      
      * tag 'spdx-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
        scripts/spdxcheck.py: handle license identifiers in XML comments
        net/mlx5: IPsec: make spdxcheck.py happy
        LICENSES/deprecated: add Zlib license text
        LICENSE: add GFDL deprecated licenses
        net/qla3xxx: Convert to SPDX license identifiers
        net/qlge: Convert to SPDX license identifiers
        net/qlcnic: Convert to SPDX license identifiers
        scsi/qla2xxx: Convert to SPDX license identifiers
        scsi/qla4xxx: Convert to SPDX license identifiers
      3e4fb434
    • Linus Torvalds's avatar
      Merge tag 'driver-core-5.10-rc1' of... · fe151462
      Linus Torvalds authored
      Merge tag 'driver-core-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core updates from Greg KH:
       "Here is the "big" set of driver core patches for 5.10-rc1
      
        They include a lot of different things, all related to the driver core
        and/or some driver logic:
      
         - sysfs common write functions to make it easier to audit sysfs
           attributes
      
         - device connection cleanups and fixes
      
         - devm helpers for a few functions
      
         - NOIO allocations for when devices are being removed
      
         - minor cleanups and fixes
      
        All have been in linux-next for a while with no reported issues"
      
      * tag 'driver-core-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (31 commits)
        regmap: debugfs: use semicolons rather than commas to separate statements
        platform/x86: intel_pmc_core: do not create a static struct device
        drivers core: node: Use a more typical macro definition style for ACCESS_ATTR
        drivers core: Use sysfs_emit for shared_cpu_map_show and shared_cpu_list_show
        mm: and drivers core: Convert hugetlb_report_node_meminfo to sysfs_emit
        drivers core: Miscellaneous changes for sysfs_emit
        drivers core: Reindent a couple uses around sysfs_emit
        drivers core: Remove strcat uses around sysfs_emit and neaten
        drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions
        sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
        dyndbg: use keyword, arg varnames for query term pairs
        driver core: force NOIO allocations during unplug
        platform_device: switch to simpler IDA interface
        driver core: platform: Document return type of more functions
        Revert "driver core: Annotate dev_err_probe() with __must_check"
        Revert "test_firmware: Test platform fw loading on non-EFI systems"
        iio: adc: xilinx-xadc: use devm_krealloc()
        hwmon: pmbus: use more devres helpers
        devres: provide devm_krealloc()
        syscore: Use pm_pr_dbg() for syscore_{suspend,resume}()
        ...
      fe151462
    • Linus Torvalds's avatar
      Merge tag 'tty-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · 5d6c413c
      Linus Torvalds authored
      Pull tty/serial updates from Greg KH:
       "Here is the big set of tty and serial driver patches for 5.10-rc1.
      
        Lots of little things in here, including:
      
         - tasklet_setup api conversions
      
         - sysrq support for capital letters
      
         - vt and vc cleanups and unwinding the mess some more
      
         - serial driver updates and minor tweaks
      
         - new device ids
      
         - rs485 support for some drivers
      
         - serial binding documentation updates
      
         - lots of small serial driver changes for reported issues
      
        All have been in linux-next for a while with no reported issues"
      
      * tag 'tty-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (79 commits)
        serial: mcf: add sysrq capability
        serial: fsl_lpuart: add sysrq support when using dma
        fbcon: remove no-op fbcon_set_origin()
        tty/sysrq: Extend the sysrq_key_table to cover capital letters
        serial: max310x: rework RX interrupt handling
        serial: 8250_dw: Fix clk-notifier/port suspend deadlock
        serial: 8250: Skip uninitialized TTY port baud rate update
        serial: 8250: Discard RTS/DTS setting from clock update method
        tty: serial: imx: disable TXDC IRQ in imx_uart_shutdown() to avoid IRQ storm
        serial: 8250_fsl: Fix TX interrupt handling condition
        serial: pl011: Fix lockdep splat when handling magic-sysrq interrupt
        tty: serial: fsl_lpuart: fix lpuart32_poll_get_char
        tty: serial: lpuart: fix lpuart32_write usage
        serial: qcom_geni_serial: To correct QUP Version detection logic
        serial: mvebu-uart: fix unused variable warning
        vt_ioctl: make VT_RESIZEX behave like VT_RESIZE
        serial: mvebu-uart: simplify the return expression of mvebu_uart_probe()
        tty: serial: imx: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n
        tty: hvc: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n
        pch_uart: drop double zeroing
        ...
      5d6c413c
    • Jason A. Donenfeld's avatar
      powerpc32: don't adjust unmoved stack pointer in csum_partial_copy_generic() epilogue · e6037a75
      Jason A. Donenfeld authored
      A recent change to the checksum code removed usage of some extra
      arguments, alongside with storage on the stack for those, and the stack
      pointer no longer needed to be adjusted in the function prologue.
      
      But a left over subtraction wasn't removed in the function epilogue,
      causing the function to return with the stack pointer moved 16 bytes
      away from where it should have.  This corrupted local state and lead to
      weird crashes.
      
      This simply removes the leftover instruction from the epilogue.
      
      Fixes: 70d65cd5 ("ppc: propagate the calling conventions change down to csum_partial_copy_generic()")
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarJason A. Donenfeld <Jason@zx2c4.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e6037a75
    • Linus Torvalds's avatar
      Merge tag 'backlight-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight · 6448cbf6
      Linus Torvalds authored
      Pull backlight updates from Lee Jones:
       "New Drivers:
         - Add support for KTD253
      
        Fix-ups:
         - Add Device Tree documentation; common, kinetic,ktd253
         - Use correct header(s); tosa_lcd, tosa_bl
      
        Bug Fixes:
         - Fix refcount imbalance; sky81452-backlight"
      
      * tag 'backlight-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
        backlight: tosa_bl: Include the right header
        backlight: tosa_lcd: Include the right header
        backlight: Add Kinetic KTD253 backlight driver
        dt-bindings: backlight: Add Kinetic KTD253 bindings
        dt-bindings: backlight: Add some common backlight properties
        backlight: sky81452-backlight: Fix refcount imbalance on error
      6448cbf6
    • Linus Torvalds's avatar
      Merge tag 'mfd-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd · 1a31c123
      Linus Torvalds authored
      Pull MFD updates from Lee Jones:
       "New Drivers:
         - Add support for initialising shared (between children) Regmaps
         - Add support for Kontron SL28CPLD
         - Add support for ENE KB3930 Embedded Controller
         - Add support for Intel FPGA PAC MAX 10 BMC
      
        New Device Support:
         - Add support for Power to Ricoh RN5T618
         - Add support for UART to Intel Lakefield
         - Add support for LP87524_Q1 to Texas Instruments LP87565
      
        New Functionality:
         - Device Tree; ene-kb3930, sl28cpld, syscon, lp87565, lp87524-q1
         - Use new helper dev_err_probe(); madera-core, stmfx, wcd934x
         - Use new GPIOD API; dm355evm_msp
         - Add wake-up capability; sprd-sc27xx-spi
         - Add ACPI support; kempld-core
      
        Fix-ups:
         - Trivial (spelling/whitespace); Kconfig, ab8500
         - Fix for unused variables; khadas-mcu, kempld-core
         - Remove unused header file(s); mt6360-core
         - Use correct IRQ flags in docs; act8945a, gateworks-gsc, rohm,bd70528-pmic
         - Add COMPILE_TEST support; asic3, tmio_core
         - Add dependency on I2C; SL28CPLD
      
        Bug Fixes:
         - Fix memory leak(s); sm501
         - Do not free regmap_config's 'name' until exit; syscon"
      
      * tag 'mfd-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (34 commits)
        mfd: kempld-core: Fix unused variable 'kempld_acpi_table' when !ACPI
        mfd: sl28cpld: Depend on I2C
        mfd: asic3: Build if COMPILE_TEST=y
        dt-bindings: mfd: Correct interrupt flags in examples
        mfd: Add ACPI support to Kontron PLD driver
        mfd: intel-m10-bmc: Add Intel MAX 10 BMC chip support for Intel FPGA PAC
        mfd: lp87565: Add LP87524-Q1 variant
        dt-bindings: mfd: Add LP87524-Q1
        dt-bindings: mfd: lp87565: Convert to yaml
        mfd: mt6360: Remove unused include <linux/version.h>
        mfd: sm501: Fix leaks in probe()
        mfd: syscon: Don't free allocated name for regmap_config
        dt-bindings: mfd: syscon: Document Exynos3 and Exynos5433 compatibles
        dt-bindings: mfd: syscon: Merge Samsung Exynos Sysreg bindings
        dt-bindings: mfd: ab8500: Remove weird Unicode characters
        mfd: sprd: Add wakeup capability for PMIC IRQ
        mfd: intel-lpss: Add device IDs for UART ports for Lakefield
        mfd: dm355evm_msp: Convert LEDs to GPIO descriptor table
        mfd: wcd934x: Simplify with dev_err_probe()
        mfd: stmfx: Simplify with dev_err_probe()
        ...
      1a31c123
    • Linus Torvalds's avatar
      Merge tag 'devicetree-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · f888bdf9
      Linus Torvalds authored
      Pull devicetree updates from Rob Herring:
      
       - Update dtc to upstream version v1.6.0-31-gcbca977ea121
      
       - dtx_diff help text reformatting
      
       - Speed-up validation time for binding and dtb checks using json for
         intermediate files
      
       - Add support for running yamllint on DT schema files
      
       - Remove old booting-without-of.rst
      
       - Extend the example schema to address common issues
      
       - Cleanup handling of additionalProperties/unevaluatedProperties
      
       - Ensure all DSI controller schemas reference dsi-controller.yaml
      
       - Vendor prefixes for Zealz, Wandbord/Technexion, Embest RIoT, Rex,
         DFI, and Cisco Meraki
      
       - Convert at25, SPMI bus, TI hwlock, HiSilicon Hi3660 USB3 PHY, Arm
         SP805 watchdog, Arm SP804, and Samsung 11-pin USB connector to DT
         schema
      
       - Convert HiSilicon SoC and syscon bindings to DT schema
      
       - Convert SiFive Risc-V L2 cache, PLIC, PRCI, and PWM to DT schema
      
       - Convert i.MX bindings for w1, crypto, rng, SIM, PM, DDR, SATA, vf610
         GPIO, and UART to DT schema
      
       - Add i.MX 8M compatible strings
      
       - Add LM81 and DS1780 as trivial devices
      
       - Various missing properties added to fix dtb validation warnings
      
      * tag 'devicetree-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (111 commits)
        dt-bindings: misc: explicitly add #address-cells for slave mode
        spi: dt-bindings: spi-controller: explicitly require #address-cells=<0> for slave mode
        dt: Remove booting-without-of.rst
        dt-bindings: update usb-c-connector example
        dt-bindings: arm: hisilicon: add missing properties into cpuctrl.yaml
        dt-bindings: arm: hisilicon: add missing properties into sysctrl.yaml
        dt-bindings: pwm: imx: document i.MX compatibles
        scripts/dtc: Update to upstream version v1.6.0-31-gcbca977ea121
        dt-bindings: Add running yamllint to dt_binding_check
        dt-bindings: powerpc: Add a schema for the 'sleep' property
        dt-bindings: pinctrl: sirf: Fix typo abitrary
        dt-bindings: pinctrl: qcom: Fix typo abitrary
        dt-bindings: Explicitly allow additional properties in common schemas
        dt-bindings: Use 'additionalProperties' instead of 'unevaluatedProperties'
        dt-bindings: Add missing 'unevaluatedProperties'
        Docs: Fixing spelling errors in Documentation/devicetree/bindings/
        dt-bindings: arm: hisilicon: convert Hi6220 domain controller bindings to json-schema
        dt-bindings: riscv: convert pwm bindings to json-schema
        dt-bindings: riscv: convert plic bindings to json-schema
        dt-bindings: fu540: prci: convert PRCI bindings to json-schema
        ...
      f888bdf9
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · b4e1bce8
      Linus Torvalds authored
      Pull pin control updates from Linus Walleij:
       "Core changes:
      
         - NONE whatsoever, we don't even touch the core files this time
           around.
      
        New drivers:
      
         - New driver for the Toshiba Visconti SoC.
      
         - New subdriver for the Qualcomm MSM8226 SoC.
      
         - New subdriver for the Actions Semiconductor S500 SoC.
      
         - New subdriver for the Mediatek MT8192 SoC.
      
         - New subdriver for the Microchip SAMA7G5 SoC.
      
        Driver enhancements:
      
         - Intel Cherryview and Baytrail cleanups and refactorings.
      
         - Enhanced support for the Renesas R8A7790, more pins and groups.
      
         - Some optimizations for the MCP23S08 MCP23x17 variant.
      
         - Some cleanups around the Actions Semiconductor subdrivers.
      
         - A bunch of cleanups around the SH-PFC and Emma Mobile drivers.
      
         - The "SH-PFC" (literally SuperH pin function controller, I think)
           subdirectory is now renamed to the more neutral "renesas", as these
           are not very much centered around SuperH anymore.
      
         - Non-critical fixes for the Aspeed driver.
      
         - Non-critical fixes for the Ingenic (MIPS!) driver.
      
         - Fix a bunch of missing pins on the AMD pinctrl driver"
      
      * tag 'pinctrl-v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (78 commits)
        pinctrl: amd: Add missing pins to the pin group list
        dt-bindings: pinctrl: sunxi: Allow pinctrl with more interrupt banks
        pinctrl: visconti: PINCTRL_TMPV7700 should depend on ARCH_VISCONTI
        pinctrl: mediatek: Free eint data on failure
        pinctrl: single: fix debug output when #pinctrl-cells = 2
        pinctrl: single: fix pinctrl_spec.args_count bounds check
        pinctrl: sunrisepoint: Modify COMMUNITY macros to be consistent
        pinctrl: cannonlake: Modify COMMUNITY macros to be consistent
        pinctrl: tigerlake: Fix register offsets for TGL-H variant
        pinctrl: Document pinctrl-single,pins when #pinctrl-cells = 2
        pinctrl: mediatek: use devm_platform_ioremap_resource_byname()
        pinctrl: nuvoton: npcm7xx: Constify static ops structs
        pinctrl: mediatek: mt7622: add antsel pins/groups
        pinctrl: ocelot: simplify the return expression of ocelot_gpiochip_register()
        pinctrl: at91-pio4: add support for sama7g5 SoC
        dt-bindings: pinctrl: at91-pio4: add microchip,sama7g5
        pinctrl: spear: simplify the return expression of tvc_connect()
        pinctrl: spear: simplify the return expression of spear310_pinctrl_probe
        pinctrl: sprd: use module_platform_driver to simplify the code
        pinctrl: Ingenic: Add I2S pins support for Ingenic SoCs.
        ...
      b4e1bce8
    • Linus Torvalds's avatar
      Merge tag 'leds-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds · 7fafb54c
      Linus Torvalds authored
      Pull LED updates from Pavel Machek:
       "Quite a lot of stuff is going on here. Great cleanups/fixes from Marek
        and others are biggest part.
      
        I limited CPU LED trigger to 8 LEDs, because it was willing to
        register 1024 'triggers' on machine with 1024 CPUs. I don't believe it
        will cause any problems, but we can raise the limit if it does"
      
      * tag 'leds-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (84 commits)
        leds: pwm: Remove platform_data support
        leds: lm3697: Fix out-of-bound access
        leds: ns2: do not guard OF match pointer with of_match_ptr
        leds: ns2: convert to fwnode API
        leds: tlc591xx: fix leak of device node iterator
        leds: pca963x: use struct led_init_data when registering
        leds: pca963x: register LEDs immediately after parsing, get rid of platdata
        leds: tca6507: remove binding comment
        leds: tca6507: cosmetic change: use helper variable
        leds: tca6507: do not set GPIO names
        dt-bindings: leds: tca6507: convert to YAML
        ledtrig-cpu: Limit to 8 CPUs
        leds: TODO: Add documentation about possible subsystem improvements
        leds: pca9532: read pwm settings from device tree
        leds: pca9532: correct shift computation in pca9532_getled
        leds: lm36274: Fix warning for undefined parameters
        leds: lm3532: Fix warnings for undefined parameters
        leds: pca963x: use flexible array
        leds: pca963x: cosmetic: rename variables
        leds: pca963x: cosmetic: rename variables
        ...
      7fafb54c
    • Linus Torvalds's avatar
      Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 55e0500e
      Linus Torvalds authored
      Pull SCSI updates from James Bottomley:
       "The usual driver updates (ufs, qla2xxx, tcmu, ibmvfc, lpfc, smartpqi,
        hisi_sas, qedi, qedf, mpt3sas) and minor bug fixes.
      
        There are only three core changes: adding sense codes, cleaning up
        noretry and adding an option for limitless retries"
      
      * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (226 commits)
        scsi: hisi_sas: Recover PHY state according to the status before reset
        scsi: hisi_sas: Filter out new PHY up events during suspend
        scsi: hisi_sas: Add device link between SCSI devices and hisi_hba
        scsi: hisi_sas: Add check for methods _PS0 and _PR0
        scsi: hisi_sas: Add controller runtime PM support for v3 hw
        scsi: hisi_sas: Switch to new framework to support suspend and resume
        scsi: hisi_sas: Use hisi_hba->cq_nvecs for calling calling synchronize_irq()
        scsi: qedf: Remove redundant assignment to variable 'rc'
        scsi: lpfc: Remove unneeded variable 'status' in lpfc_fcp_cpu_map_store()
        scsi: snic: Convert to use DEFINE_SEQ_ATTRIBUTE macro
        scsi: qla4xxx: Delete unneeded variable 'status' in qla4xxx_process_ddb_changed
        scsi: sun_esp: Use module_platform_driver to simplify the code
        scsi: sun3x_esp: Use module_platform_driver to simplify the code
        scsi: sni_53c710: Use module_platform_driver to simplify the code
        scsi: qlogicpti: Use module_platform_driver to simplify the code
        scsi: mac_esp: Use module_platform_driver to simplify the code
        scsi: jazz_esp: Use module_platform_driver to simplify the code
        scsi: mvumi: Fix error return in mvumi_io_attach()
        scsi: lpfc: Drop nodelist reference on error in lpfc_gen_req()
        scsi: be2iscsi: Fix a theoretical leak in beiscsi_create_eqs()
        ...
      55e0500e
    • Linus Torvalds's avatar
      Merge tag 'for-5.10/dm-changes' of... · 4815519e
      Linus Torvalds authored
      Merge tag 'for-5.10/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
      
      Pull device mapper updates from Mike Snitzer:
      
       - Improve DM core's bio splitting to use blk_max_size_offset(). Also
         fix bio splitting for bios that were deferred to the worker thread
         due to a DM device being suspended.
      
       - Remove DM core's special handling of NVMe devices now that block core
         has internalized efficiencies drivers previously needed to be
         concerned about (via now removed direct_make_request).
      
       - Fix request-based DM to not bounce through indirect dm_submit_bio;
         instead have block core make direct call to blk_mq_submit_bio().
      
       - Various DM core cleanups to simplify and improve code.
      
       - Update DM cryot to not use drivers that set
         CRYPTO_ALG_ALLOCATES_MEMORY.
      
       - Fix DM raid's raid1 and raid10 discard limits for the purposes of
         linux-stable. But then remove DM raid's discard limits settings now
         that MD raid can efficiently handle large discards.
      
       - A couple small cleanups across various targets.
      
      * tag 'for-5.10/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm: fix request-based DM to not bounce through indirect dm_submit_bio
        dm: remove special-casing of bio-based immutable singleton target on NVMe
        dm: export dm_copy_name_and_uuid
        dm: fix comment in __dm_suspend()
        dm: fold dm_process_bio() into dm_submit_bio()
        dm: fix missing imposition of queue_limits from dm_wq_work() thread
        dm snap persistent: simplify area_io()
        dm thin metadata: Remove unused local variable when create thin and snap
        dm raid: remove unnecessary discard limits for raid10
        dm raid: fix discard limits for raid1 and raid10
        dm crypt: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY
        dm: use dm_table_get_device_name() where appropriate in targets
        dm table: make 'struct dm_table' definition accessible to all of DM core
        dm: eliminate need for start_io_acct() forward declaration
        dm: simplify __process_abnormal_io()
        dm: push use of on-stack flush_bio down to __send_empty_flush()
        dm: optimize max_io_len() by inlining max_io_len_target_boundary()
        dm: push md->immutable_target optimization down to __process_bio()
        dm: change max_io_len() to use blk_max_size_offset()
        dm table: stack 'chunk_sectors' limit to account for target-specific splitting
      4815519e
    • Linus Torvalds's avatar
      Merge tag 'for-linus-5.10-1' of git://github.com/cminyard/linux-ipmi · 6e4dc3d5
      Linus Torvalds authored
      Pull IPMI updates from Corey Minyard:
       "Some minor bug fixes, return values, cleanups of prints, conversion of
        tasklets to the new API.
      
        The biggest change is retrying the initial information fetch from the
        management controller. If that fails, the iterface is not operational,
        and one group was having trouble with the management controller not
        being ready when the OS started up. So a retry was added"
      
      * tag 'for-linus-5.10-1' of git://github.com/cminyard/linux-ipmi:
        ipmi_si: Fix wrong return value in try_smi_init()
        ipmi: msghandler: Fix a signedness bug
        ipmi: add retry in try_get_dev_id()
        ipmi: Clean up some printks
        ipmi:msghandler: retry to get device id on an error
        ipmi:sm: Print current state when the state is invalid
        ipmi: Reset response handler when failing to send the command
        ipmi: add a newline when printing parameter 'panic_op' by sysfs
        char: ipmi: convert tasklets to use new tasklet_setup() API
      6e4dc3d5
    • Linus Torvalds's avatar
      Merge branch 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup · 2f6c6d08
      Linus Torvalds authored
      Pull cgroup updates from Tejun Heo:
       "Two minor changes.
      
        One makes cgroup interface files ignore zero-sized writes rather than
        triggering -EINVAL on them. The other change is a cleanup which
        doesn't cause any behavior changes"
      
      * 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
        cgroup: Zero sized write should be no-op
        cgroup: remove redundant kernfs_activate in cgroup_setup_root()
      2f6c6d08
    • Andrii Nakryiko's avatar
      fs: fix NULL dereference due to data race in prepend_path() · 09cad075
      Andrii Nakryiko authored
      Fix data race in prepend_path() with re-reading mnt->mnt_ns twice
      without holding the lock.
      
      is_mounted() does check for NULL, but is_anon_ns(mnt->mnt_ns) might
      re-read the pointer again which could be NULL already, if in between
      reads one of kern_unmount()/kern_unmount_array()/umount_tree() sets
      mnt->mnt_ns to NULL.
      
      This is seen in production with the following stack trace:
      
        BUG: kernel NULL pointer dereference, address: 0000000000000048
        ...
        RIP: 0010:prepend_path.isra.4+0x1ce/0x2e0
        Call Trace:
          d_path+0xe6/0x150
          proc_pid_readlink+0x8f/0x100
          vfs_readlink+0xf8/0x110
          do_readlinkat+0xfd/0x120
          __x64_sys_readlinkat+0x1a/0x20
          do_syscall_64+0x42/0x110
          entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fixes: f2683bd8 ("[PATCH] fix d_absolute_path() interplay with fsmount()")
      Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
      Reviewed-by: default avatarJosef Bacik <josef@toxicpanda.com>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      09cad075
    • Linus Torvalds's avatar
      Merge tag 'threads-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux · 4da9af00
      Linus Torvalds authored
      Pull pidfd updates from Christian Brauner:
       "This introduces a new extension to the pidfd_open() syscall. Users can
        now raise the new PIDFD_NONBLOCK flag to support non-blocking pidfd
        file descriptors. This has been requested for uses in async process
        management libraries such as async-pidfd in Rust.
      
        Ever since the introduction of pidfds and more advanced async io
        various programming languages such as Rust have grown support for
        async event libraries. These libraries are created to help build
        epoll-based event loops around file descriptors. A common pattern is
        to automatically make all file descriptors they manage to O_NONBLOCK.
      
        For such libraries the EAGAIN error code is treated specially. When a
        function is called that returns EAGAIN the function isn't called again
        until the event loop indicates the the file descriptor is ready.
        Supporting EAGAIN when waiting on pidfds makes such libraries just
        work with little effort.
      
        This introduces a new flag PIDFD_NONBLOCK that is equivalent to
        O_NONBLOCK. This follows the same patterns we have for other (anon
        inode) file descriptors such as EFD_NONBLOCK, IN_NONBLOCK,
        SFD_NONBLOCK, TFD_NONBLOCK and the same for close-on-exec flags.
      
        Passing a non-blocking pidfd to waitid() currently has no effect, i.e.
        is not supported. There are users which would like to use waitid() on
        pidfds that are O_NONBLOCK and mix it with pidfds that are blocking
        and both pass them to waitid().
      
        The expected behavior is to have waitid() return -EAGAIN for
        non-blocking pidfds and to block for blocking pidfds without needing
        to perform any additional checks for flags set on the pidfd before
        passing it to waitid(). Non-blocking pidfds will return EAGAIN from
        waitid() when no child process is ready yet. Returning -EAGAIN for
        non-blocking pidfds makes it easier for event loops that handle EAGAIN
        specially.
      
        It also makes the API more consistent and uniform. In essence,
        waitid() is treated like a read on a non-blocking pidfd or a recvmsg()
        on a non-blocking socket.
      
        With the addition of support for non-blocking pidfds we support the
        same functionality that sockets do. For sockets() recvmsg() supports
        MSG_DONTWAIT for pidfds waitid() supports WNOHANG. Both flags are
        per-call options. In contrast non-blocking pidfds and non-blocking
        sockets are a setting on an open file description affecting all
        threads in the calling process as well as other processes that hold
        file descriptors referring to the same open file description. Both
        behaviors, per call and per open file description, have genuine
        use-cases.
      
        The interaction with the WNOHANG flag is documented as follows:
      
         - If a non-blocking pidfd is passed and WNOHANG is not raised we
           simply raise the WNOHANG flag internally. When do_wait() returns
           indicating that there are eligible child processes but none have
           exited yet we set EAGAIN. If no child process exists we continue
           returning ECHILD.
      
         - If a non-blocking pidfd is passed and WNOHANG is raised waitid()
           will continue returning 0, i.e. it will not set EAGAIN. This ensure
           backwards compatibility with applications passing WNOHANG
           explicitly with pidfds"
      
      * tag 'threads-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
        tests: remove O_NONBLOCK before waiting for WSTOPPED
        tests: add waitid() tests for non-blocking pidfds
        tests: port pidfd_wait to kselftest harness
        pidfd: support PIDFD_NONBLOCK in pidfd_open()
        exit: support non-blocking pidfds
      4da9af00
    • Linus Torvalds's avatar
      Merge tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux · 612e7a4c
      Linus Torvalds authored
      Pull kernel_clone() updates from Christian Brauner:
       "During the v5.9 merge window we reworked the process creation
        codepaths across multiple architectures. After this work we were only
        left with the _do_fork() helper based on the struct kernel_clone_args
        calling convention. As was pointed out _do_fork() isn't valid
        kernelese especially for a helper that isn't just static.
      
        This series removes the _do_fork() helper and introduces the new
        kernel_clone() helper. The process creation cleanup didn't change the
        name to something more reasonable mainly because _do_fork() was used
        in quite a few places. So sending this as a separate series seemed the
        better strategy.
      
        I originally intended to send this early in the v5.9 development cycle
        after the merge window had closed but given that this was touching
        quite a few places I decided to defer this until the v5.10 merge
        window"
      
      * tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
        sched: remove _do_fork()
        tracing: switch to kernel_clone()
        kgdbts: switch to kernel_clone()
        kprobes: switch to kernel_clone()
        x86: switch to kernel_clone()
        sparc: switch to kernel_clone()
        nios2: switch to kernel_clone()
        m68k: switch to kernel_clone()
        ia64: switch to kernel_clone()
        h8300: switch to kernel_clone()
        fork: introduce kernel_clone()
      612e7a4c
    • Linus Torvalds's avatar
      Merge tag 'linux-kselftest-fixes-5.10-rc1' of... · 9e51183e
      Linus Torvalds authored
      Merge tag 'linux-kselftest-fixes-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull kselftest updates from Shuah Khan:
      
       - a selftests harness fix to flush stdout before forking to avoid
         parent and child printing duplicates messages. This is evident when
         test output is redirected to a file.
      
       - a tools/ wide change to avoid comma separated statements from Joe
         Perches. This fix spans tools/lib, tools/power/cpupower, and
         selftests.
      
      * tag 'linux-kselftest-fixes-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
        tools: Avoid comma separated statements
        selftests/harness: Flush stdout before forking
      9e51183e
    • Linus Torvalds's avatar
      Merge tag 'xfs-5.10-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 2fc61f25
      Linus Torvalds authored
      Pull xfs updates from Darrick Wong:
       "The biggest changes are two new features for the ondisk metadata: one
        to record the sizes of the inode btrees in the AG to increase
        redundancy checks and to improve mount times; and a second new feature
        to support timestamps until the year 2486.
      
        We also fixed a problem where reflinking into a file that requires
        synchronous writes wouldn't actually flush the updates to disk; clean
        up a fair amount of cruft; and started fixing some bugs in the
        realtime volume code.
      
        Summary:
      
         - Clean up the buffer ioend calling path so that the retry strategy
           isn't quite so scattered everywhere.
      
         - Clean up m_sb_bp handling.
      
         - New feature: storing inode btree counts in the AGI to speed up
           certain mount time per-AG block reservation operatoins and add a
           little more metadata redundancy.
      
         - New feature: Widen inode timestamps and quota grace expiration
           timestamps to support dates through the year 2486.
      
         - Get rid of more of our custom buffer allocation API wrappers.
      
         - Use a proper VLA for shortform xattr structure namevals.
      
         - Force the log after reflinking or deduping into a file that is
           opened with O_SYNC or O_DSYNC.
      
         - Fix some math errors in the realtime allocator"
      
      * tag 'xfs-5.10-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (42 commits)
        xfs: ensure that fpunch, fcollapse, and finsert operations are aligned to rt extent size
        xfs: make sure the rt allocator doesn't run off the end
        xfs: Remove unneeded semicolon
        xfs: force the log after remapping a synchronous-writes file
        xfs: Convert xfs_attr_sf macros to inline functions
        xfs: Use variable-size array for nameval in xfs_attr_sf_entry
        xfs: Remove typedef xfs_attr_shortform_t
        xfs: remove typedef xfs_attr_sf_entry_t
        xfs: Remove kmem_zalloc_large()
        xfs: enable big timestamps
        xfs: trace timestamp limits
        xfs: widen ondisk quota expiration timestamps to handle y2038+
        xfs: widen ondisk inode timestamps to deal with y2038+
        xfs: redefine xfs_ictimestamp_t
        xfs: redefine xfs_timestamp_t
        xfs: move xfs_log_dinode_to_disk to the log recovery code
        xfs: refactor quota timestamp coding
        xfs: refactor default quota grace period setting code
        xfs: refactor quota expiration timer modification
        xfs: explicitly define inode timestamp range
        ...
      2fc61f25
    • Linus Torvalds's avatar
      Merge tag 'iomap-5.10-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 37187df4
      Linus Torvalds authored
      Pull iomap updates from Darrick Wong:
       "There's not a lot of new stuff going on here -- a little bit of code
        refactoring to make iomap workable with btrfs' fsync locking model,
        cleanups in preparation for adding THP support for filesystems, and
        fixing a data corruption issue for blocksize < pagesize filesystems.
      
        Summary:
      
         - Don't WARN_ON weird states that unprivileged users can create.
      
         - Don't invalidate page cache when direct writes want to fall back to
           buffered.
      
         - Fix some problems when readahead ios fail.
      
         - Fix a problem where inline data pages weren't getting flushed
           during an unshare operation.
      
         - Rework iomap to support arbitrarily many blocks per page in
           preparation to support THP for the page cache.
      
         - Fix a bug in the blocksize < pagesize buffered io path where we
           could fail to initialize the many-blocks-per-page uptodate bitmap
           correctly when the backing page is actually up to date. This could
           cause us to forget to write out dirty pages.
      
         - Split out the generic_write_sync at the end of the directio write
           path so that btrfs can drop the inode lock before sync'ing the
           file.
      
         - Call inode_dio_end before trying to sync the file after a O_DSYNC
           direct write (instead of afterwards) to match the behavior of the
           old directio code"
      
      * tag 'iomap-5.10-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        iomap: Call inode_dio_end() before generic_write_sync()
        iomap: Allow filesystem to call iomap_dio_complete without i_rwsem
        iomap: Set all uptodate bits for an Uptodate page
        iomap: Change calling convention for zeroing
        iomap: Convert iomap_write_end types
        iomap: Convert write_count to write_bytes_pending
        iomap: Convert read_count to read_bytes_pending
        iomap: Support arbitrarily many blocks per page
        iomap: Use bitmap ops to set uptodate bits
        iomap: Use kzalloc to allocate iomap_page
        fs: Introduce i_blocks_per_page
        iomap: Fix misplaced page flushing
        iomap: Use round_down/round_up macros in __iomap_write_begin
        iomap: Mark read blocks uptodate in write_begin
        iomap: Clear page error before beginning a write
        iomap: Fix direct I/O write consistency check
        iomap: fix WARN_ON_ONCE() from unprivileged users
      37187df4
    • Linus Torvalds's avatar
      Merge tag 'iommu-updates-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu · 531d29b0
      Linus Torvalds authored
      Pull iommu updates from Joerg Roedel:
      
       - ARM-SMMU Updates from Will:
      
            - Continued SVM enablement, where page-table is shared with CPU
      
            - Groundwork to support integrated SMMU with Adreno GPU
      
            - Allow disabling of MSI-based polling on the kernel command-line
      
            - Minor driver fixes and cleanups (octal permissions, error
              messages, ...)
      
       - Secure Nested Paging Support for AMD IOMMU. The IOMMU will fault when
         a device tries DMA on memory owned by a guest. This needs new
         fault-types as well as a rewrite of the IOMMU memory semaphore for
         command completions.
      
       - Allow broken Intel IOMMUs (wrong address widths reported) to still be
         used for interrupt remapping.
      
       - IOMMU UAPI updates for supporting vSVA, where the IOMMU can access
         address spaces of processes running in a VM.
      
       - Support for the MT8167 IOMMU in the Mediatek IOMMU driver.
      
       - Device-tree updates for the Renesas driver to support r8a7742.
      
       - Several smaller fixes and cleanups all over the place.
      
      * tag 'iommu-updates-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (57 commits)
        iommu/vt-d: Gracefully handle DMAR units with no supported address widths
        iommu/vt-d: Check UAPI data processed by IOMMU core
        iommu/uapi: Handle data and argsz filled by users
        iommu/uapi: Rename uapi functions
        iommu/uapi: Use named union for user data
        iommu/uapi: Add argsz for user filled data
        docs: IOMMU user API
        iommu/qcom: add missing put_device() call in qcom_iommu_of_xlate()
        iommu/arm-smmu-v3: Add SVA device feature
        iommu/arm-smmu-v3: Check for SVA features
        iommu/arm-smmu-v3: Seize private ASID
        iommu/arm-smmu-v3: Share process page tables
        iommu/arm-smmu-v3: Move definitions to a header
        iommu/io-pgtable-arm: Move some definitions to a header
        iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer
        iommu/amd: Re-purpose Exclusion range registers to support SNP CWWB
        iommu/amd: Add support for RMP_PAGE_FAULT and RMP_HW_ERR
        iommu/amd: Use 4K page for completion wait write-back semaphore
        iommu/tegra-smmu: Allow to group clients in same swgroup
        iommu/tegra-smmu: Fix iova->phys translation
        ...
      531d29b0