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Author SHA1 Message Date
Tao Huang
daf2796321 Merge commit '52f971ee6e023d89d24f9e3cd145d86d707e459c' 
* commit '52f971ee6e023d89d24f9e3cd145d86d707e459c': (84565 commits)
  arm64: dts: rockchip: rk3562: Enable viLKsvPwrActive for soc bus
  mtd: spi-nor: esmt: Support New devices
  mtd: spi-nor: fmsh: Support New devices
  mtd: spi-nor: gigadevice: Support New devices
  mtd: spinand: gsto: Add code
  mtd: spinand: hyf: Support new devices
  mmc: convert thunder boot dependency
  ARM: dts: rockchip: rv1106: add node for system sleep
  ARM: rockchip: support rv1106 suspend
  ARM: rockchip: add some pm-related functions
  video: rockchip: mpp: fix rk3528 avsd not probe issue
  arm64: dts: rockchip: rk3588-vehicle-maxim-serdes: Add BOE AV156FHT L83 support
  arm64: rockchip_defconfig: Enable CONFIG_DRM_PANEL_MAXIM_MAX96752F
  drm/panel: Add panel driver for Maxim MAX96752F based LCDs
  media: i2c: techpoint: add support 4 channel 2 lane mode
  drm/rockchip: dsi2: fix NULL in component_ops .unbind helper
  media: rockchip: vicap: fixes cma can not alloc when capture raw
  media: rockchip: vicap: fixed vc err for multi channel
  media: rockchip: hdmirx: fix timing info for interlaced resolution
  media: rockchip: hdmirx: fix code error for cec register failed
  ...

Change-Id: Ia7ac365455d87a295e62bbf481d80694a9712f30

Conflicts:
	.gitignore
	Documentation/devicetree/bindings/clock/rockchip,px30-cru.txt
	Documentation/devicetree/bindings/connector/usb-connector.yaml
	Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
	Documentation/devicetree/bindings/hwmon/pwm-fan.txt
	Documentation/devicetree/bindings/iio/light/vl6180.txt
	Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
	Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml
	Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
	Documentation/devicetree/bindings/net/snps,dwmac.yaml
	Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.yaml
	Documentation/devicetree/bindings/power/rockchip-io-domain.txt
	Documentation/devicetree/bindings/regulator/fan53555.txt
	Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
	Documentation/devicetree/bindings/sound/rockchip,pdm.yaml
	Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
	Documentation/devicetree/bindings/spi/spi-rockchip.yaml
	Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
	Documentation/devicetree/bindings/usb/usb-xhci.txt
	Documentation/filesystems/erofs.rst
	arch/arm/Kconfig
	arch/arm/Makefile
	arch/arm/boot/compressed/head.S
	arch/arm/boot/dts/rk3036.dtsi
	arch/arm/boot/dts/rk3066a-rayeager.dts
	arch/arm/boot/dts/rk3066a.dtsi
	arch/arm/boot/dts/rk322x.dtsi
	arch/arm/boot/dts/rk3288.dtsi
	arch/arm/boot/dts/rk3xxx.dtsi
	arch/arm64/boot/dts/rockchip/Makefile
	arch/arm64/boot/dts/rockchip/px30.dtsi
	arch/arm64/boot/dts/rockchip/rk3308.dtsi
	arch/arm64/boot/dts/rockchip/rk3399-opp.dtsi
	arch/arm64/boot/dts/rockchip/rk3399.dtsi
	arch/arm64/boot/dts/rockchip/rk3566.dtsi
	arch/arm64/boot/dts/rockchip/rk3568-pinctrl.dtsi
	arch/arm64/boot/dts/rockchip/rk3568.dtsi
	arch/arm64/boot/dts/rockchip/rockchip-pinconf.dtsi
	arch/arm64/kernel/process.c
	arch/arm64/mm/Makefile
	arch/arm64/mm/fault.c
	arch/arm64/mm/init.c
	drivers/Kconfig
	drivers/Makefile
	drivers/android/Kconfig
	drivers/ata/ahci_platform.c
	drivers/char/hw_random/Kconfig
	drivers/char/hw_random/Makefile
	drivers/clk/clk.c
	drivers/clk/rockchip/Kconfig
	drivers/clk/rockchip/Makefile
	drivers/clk/rockchip/clk-cpu.c
	drivers/clk/rockchip/clk-rk3036.c
	drivers/clk/rockchip/clk-rk3188.c
	drivers/clk/rockchip/clk-rk3308.c
	drivers/clk/rockchip/clk-rk3399.c
	drivers/clk/rockchip/clk-rk3568.c
	drivers/clk/rockchip/clk-rv1126.c
	drivers/clk/rockchip/clk.c
	drivers/clk/rockchip/clk.h
	drivers/cpufreq/cpufreq-dt.c
	drivers/crypto/Kconfig
	drivers/devfreq/Makefile
	drivers/devfreq/devfreq.c
	drivers/dma-buf/dma-buf.c
	drivers/dma-buf/heaps/Makefile
	drivers/dma/pl330.c
	drivers/firmware/Kconfig
	drivers/gpio/Kconfig
	drivers/gpio/Makefile
	drivers/gpio/gpio-rockchip.c
	drivers/gpu/Makefile
	drivers/gpu/drm/Kconfig
	drivers/gpu/drm/Makefile
	drivers/gpu/drm/bridge/Kconfig
	drivers/gpu/drm/bridge/Makefile
	drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
	drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
	drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
	drivers/gpu/drm/bridge/display-connector.c
	drivers/gpu/drm/bridge/sii902x.c
	drivers/gpu/drm/bridge/synopsys/Makefile
	drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
	drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
	drivers/gpu/drm/drm_atomic_helper.c
	drivers/gpu/drm/drm_crtc_internal.h
	drivers/gpu/drm/drm_edid.c
	drivers/gpu/drm/panel/panel-simple.c
	drivers/gpu/drm/rockchip/Kconfig
	drivers/gpu/drm/rockchip/Makefile
	drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
	drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
	drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
	drivers/gpu/drm/rockchip/inno_hdmi.c
	drivers/gpu/drm/rockchip/rockchip_drm_drv.c
	drivers/gpu/drm/rockchip/rockchip_drm_drv.h
	drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
	drivers/gpu/drm/rockchip/rockchip_drm_gem.c
	drivers/gpu/drm/rockchip/rockchip_drm_vop.c
	drivers/gpu/drm/rockchip/rockchip_drm_vop.h
	drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
	drivers/gpu/drm/rockchip/rockchip_lvds.c
	drivers/gpu/drm/rockchip/rockchip_rgb.c
	drivers/gpu/drm/rockchip/rockchip_vop2_reg.c
	drivers/gpu/drm/rockchip/rockchip_vop_reg.c
	drivers/gpu/drm/rockchip/rockchip_vop_reg.h
	drivers/hwmon/pwm-fan.c
	drivers/hwspinlock/Kconfig
	drivers/hwspinlock/Makefile
	drivers/i2c/busses/i2c-rk3x.c
	drivers/i2c/i2c-core-base.c
	drivers/iio/adc/Kconfig
	drivers/iio/adc/rockchip_saradc.c
	drivers/iio/industrialio-event.c
	drivers/input/touchscreen/Makefile
	drivers/iommu/iommu.c
	drivers/iommu/rockchip-iommu.c
	drivers/irqchip/irq-gic-v3-its.c
	drivers/leds/Makefile
	drivers/mailbox/Kconfig
	drivers/media/common/videobuf2/Makefile
	drivers/media/i2c/Kconfig
	drivers/media/i2c/Makefile
	drivers/media/i2c/dw9714.c
	drivers/media/i2c/hi556.c
	drivers/media/i2c/imx214.c
	drivers/media/i2c/imx258.c
	drivers/media/i2c/imx334.c
	drivers/media/i2c/imx335.c
	drivers/media/i2c/ov5648.c
	drivers/media/i2c/ov5670.c
	drivers/media/i2c/ov5695.c
	drivers/media/i2c/ov7251.c
	drivers/media/platform/Kconfig
	drivers/media/platform/Makefile
	drivers/media/platform/rockchip/Kconfig
	drivers/media/spi/Kconfig
	drivers/media/spi/Makefile
	drivers/media/usb/uvc/uvc_driver.c
	drivers/media/usb/uvc/uvcvideo.h
	drivers/media/v4l2-core/v4l2-async.c
	drivers/media/v4l2-core/v4l2-ioctl.c
	drivers/mfd/rk808.c
	drivers/mmc/core/block.c
	drivers/mmc/core/host.c
	drivers/mmc/core/mmc.c
	drivers/mmc/core/mmc_ops.c
	drivers/mmc/host/Makefile
	drivers/mmc/host/dw_mmc-rockchip.c
	drivers/mmc/host/dw_mmc.c
	drivers/mmc/host/dw_mmc.h
	drivers/mmc/host/sdhci-of-dwcmshc.c
	drivers/mtd/nand/Makefile
	drivers/mtd/nand/raw/Kconfig
	drivers/mtd/nand/raw/Makefile
	drivers/mtd/nand/raw/rockchip-nand-controller.c
	drivers/mtd/nand/spi/Makefile
	drivers/mtd/nand/spi/core.c
	drivers/mtd/nand/spi/gigadevice.c
	drivers/mtd/nand/spi/macronix.c
	drivers/mtd/nand/spi/xtx.c
	drivers/mtd/spi-nor/Kconfig
	drivers/mtd/spi-nor/Makefile
	drivers/mtd/spi-nor/core.c
	drivers/mtd/spi-nor/core.h
	drivers/mtd/spi-nor/eon.c
	drivers/mtd/spi-nor/esmt.c
	drivers/mtd/spi-nor/gigadevice.c
	drivers/mtd/spi-nor/macronix.c
	drivers/mtd/spi-nor/winbond.c
	drivers/mtd/spi-nor/xmc.c
	drivers/net/ethernet/stmicro/stmmac/Makefile
	drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
	drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
	drivers/net/ethernet/stmicro/stmmac/stmmac.h
	drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
	drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
	drivers/net/phy/Kconfig
	drivers/net/phy/motorcomm.c
	drivers/net/phy/phy_device.c
	drivers/nvmem/Kconfig
	drivers/nvmem/Makefile
	drivers/pci/controller/dwc/Makefile
	drivers/pci/controller/dwc/pcie-designware-host.c
	drivers/pci/controller/dwc/pcie-dw-rockchip.c
	drivers/pci/controller/pcie-rockchip-host.c
	drivers/pci/controller/pcie-rockchip.h
	drivers/pci/pci-sysfs.c
	drivers/pci/pcie/Makefile
	drivers/phy/rockchip/Kconfig
	drivers/phy/rockchip/Makefile
	drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c
	drivers/phy/rockchip/phy-rockchip-inno-usb2.c
	drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
	drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
	drivers/phy/rockchip/phy-rockchip-typec.c
	drivers/pinctrl/Kconfig
	drivers/pinctrl/Makefile
	drivers/pinctrl/pinctrl-rk805.c
	drivers/pinctrl/pinctrl-rockchip.c
	drivers/pinctrl/pinctrl-rockchip.h
	drivers/power/supply/Kconfig
	drivers/power/supply/Makefile
	drivers/power/supply/bq25890_charger.c
	drivers/power/supply/rk817_charger.c
	drivers/pwm/core.c
	drivers/pwm/pwm-rockchip.c
	drivers/regulator/fan53555.c
	drivers/regulator/rk808-regulator.c
	drivers/rtc/rtc-hym8563.c
	drivers/soc/rockchip/Kconfig
	drivers/soc/rockchip/Makefile
	drivers/soc/rockchip/grf.c
	drivers/soc/rockchip/io-domain.c
	drivers/soc/rockchip/pm_domains.c
	drivers/spi/Kconfig
	drivers/spi/spi-rockchip-sfc.c
	drivers/spi/spi-rockchip.c
	drivers/spi/spidev.c
	drivers/staging/android/ion/heaps/ion_system_heap.c
	drivers/thermal/rockchip_thermal.c
	drivers/tty/serial/8250/8250_dma.c
	drivers/tty/serial/8250/8250_dw.c
	drivers/tty/serial/8250/8250_dwlib.c
	drivers/tty/serial/8250/8250_port.c
	drivers/usb/dwc2/platform.c
	drivers/usb/dwc3/core.c
	drivers/usb/dwc3/core.h
	drivers/usb/dwc3/ep0.c
	drivers/usb/dwc3/gadget.c
	drivers/usb/gadget/configfs.c
	drivers/usb/gadget/function/f_fs.c
	drivers/usb/gadget/function/f_uvc.c
	drivers/usb/gadget/function/uvc.h
	drivers/usb/gadget/function/uvc_configfs.c
	drivers/usb/gadget/function/uvc_queue.c
	drivers/usb/gadget/function/uvc_v4l2.c
	drivers/usb/gadget/function/uvc_video.c
	drivers/usb/gadget/udc/core.c
	drivers/usb/host/ehci-hcd.c
	drivers/usb/host/ehci-platform.c
	drivers/usb/storage/unusual_uas.h
	drivers/usb/typec/altmodes/Kconfig
	drivers/usb/typec/altmodes/displayport.c
	drivers/usb/typec/class.c
	drivers/usb/typec/tcpm/tcpm.c
	fs/Kconfig
	fs/cifs/inode.c
	fs/dax.c
	fs/erofs/data.c
	fs/erofs/inode.c
	fs/erofs/internal.h
	fs/erofs/super.c
	fs/f2fs/super.c
	fs/fuse/dev.c
	include/drm/bridge/dw_hdmi.h
	include/drm/drm_connector.h
	include/drm/drm_edid.h
	include/dt-bindings/clock/rk3568-cru.h
	include/dt-bindings/power/rk3568-power.h
	include/dt-bindings/power/rk3588-power.h
	include/linux/clk-provider.h
	include/linux/cma.h
	include/linux/dma-buf.h
	include/linux/dma-heap.h
	include/linux/mfd/rk808.h
	include/linux/mtd/spi-nor.h
	include/linux/mtd/spinand.h
	include/linux/phy/pcie.h
	include/linux/pwm.h
	include/linux/sched/sysctl.h
	include/linux/slub_def.h
	include/linux/stmmac.h
	include/linux/usb/typec.h
	include/media/v4l2-async.h
	include/soc/rockchip/pm_domains.h
	include/uapi/drm/drm_fourcc.h
	include/uapi/linux/iio/types.h
	include/uapi/linux/media-bus-format.h
	init/Kconfig
	init/main.c
	kernel/printk/printk.c
	kernel/rcu/Kconfig.debug
	kernel/rcu/tree_stall.h
	kernel/sched/core.c
	kernel/sched/cpufreq_schedutil.c
	kernel/sched/fair.c
	kernel/sched/pelt.c
	kernel/sched/rt.c
	kernel/sched/sched.h
	kernel/softirq.c
	kernel/sysctl.c
	mm/Makefile
	mm/cma.c
	mm/page_alloc.c
	mm/slub.c
	scripts/.gitignore
	scripts/headers_install.sh
	sound/soc/codecs/Kconfig
	sound/soc/codecs/Makefile
	sound/soc/codecs/es8326.c
	sound/soc/codecs/es8326.h
	sound/soc/codecs/hdmi-codec.c
	sound/soc/codecs/rk817_codec.c
	sound/soc/rockchip/Kconfig
	sound/soc/rockchip/Makefile
	sound/soc/rockchip/rockchip_i2s.c
	sound/soc/rockchip/rockchip_i2s_tdm.c
	sound/soc/rockchip/rockchip_i2s_tdm.h
	sound/soc/rockchip/rockchip_pdm.c
	sound/soc/rockchip/rockchip_spdif.c
	sound/soc/soc-generic-dmaengine-pcm.c
	tools/iio/iio_event_monitor.c
 2023-05-20 18:57:29 +08:00
Tao Huang
cc17504307 Merge tag 'android12-5.10-2023-02_r1' of https://android.googlesource.com/kernel/common 
android12-5.10 February 2023 release 1

Artifacts:
  https://ci.android.com/builds/submitted/9611440/kernel_aarch64/latest

* tag 'android12-5.10-2023-02_r1': (5560 commits)
  ANDROID: GKI: Enable ARM64_ERRATUM_2454944
  ANDROID: dma-ops: Add restricted vendor hook
  ANDROID: arm64: Work around Cortex-A510 erratum 2454944
  ANDROID: mm/vmalloc: Add override for lazy vunmap
  ANDROID: cpuidle-psci: Fix suspicious RCU usage
  ANDROID: ABI: update allowed list for galaxy
  FROMGIT: f2fs: add sysfs nodes to set last_age_weight
  FROMGIT: f2fs: fix wrong calculation of block age
  ANDROID: struct io_uring ABI preservation hack for 5.10.162 changes
  ANDROID: fix up struct task_struct ABI change in 5.10.162
  ANDROID: add flags variable back to struct proto_ops
  UPSTREAM: io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups
  UPSTREAM: eventfd: provide a eventfd_signal_mask() helper
  UPSTREAM: eventpoll: add EPOLL_URING_WAKE poll wakeup flag
  UPSTREAM: Revert "proc: don't allow async path resolution of /proc/self components"
  UPSTREAM: Revert "proc: don't allow async path resolution of /proc/thread-self components"
  UPSTREAM: net: remove cmsg restriction from io_uring based send/recvmsg calls
  UPSTREAM: task_work: unconditionally run task_work from get_signal()
  UPSTREAM: signal: kill JOBCTL_TASK_WORK
  UPSTREAM: io_uring: import 5.15-stable io_uring
  ...

Change-Id: I2b16474d6e3a91f1d702486ec6d1565a7bc310e3

Conflicts:
	Documentation/ABI/testing/configfs-usb-gadget-uac2
	Documentation/usb/gadget-testing.rst
	Makefile
	arch/arm/boot/dts/rk3288-evb-act8846.dts
	arch/arm64/mm/Makefile
	drivers/dma-buf/dma-buf.c
	drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
	drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
	drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
	drivers/gpu/drm/rockchip/rockchip_drm_vop.c
	drivers/mmc/core/mmc.c
	drivers/pci/controller/dwc/pcie-designware-host.c
	drivers/pinctrl/pinctrl-rockchip.c
	drivers/regulator/core.c
	drivers/usb/dwc3/ep0.c
	drivers/usb/dwc3/gadget.c
	drivers/usb/gadget/function/f_hid.c
	drivers/usb/gadget/function/f_uac1.c
	drivers/usb/gadget/function/f_uac2.c
	drivers/usb/gadget/function/u_audio.c
	drivers/usb/gadget/function/u_audio.h
	drivers/usb/gadget/function/u_uac2.h
	drivers/usb/host/xhci.h
	drivers/usb/storage/unusual_uas.h
	drivers/usb/typec/altmodes/displayport.c
	include/linux/page_ext.h
	mm/cma.c
	mm/page_ext.c
	sound/core/pcm_dmaengine.c
	sound/soc/codecs/hdmi-codec.c
	include/linux/stmmac.h
	sound/drivers/aloop.c
	drivers/pci/controller/dwc/pcie-designware.h
 2023-03-14 09:44:51 +08:00
Jens Axboe
150dea15cb UPSTREAM: arch: setup PF_IO_WORKER threads like PF_KTHREAD 
[ Upstream commit 4727dc20e0 ]

PF_IO_WORKER are kernel threads too, but they aren't PF_KTHREAD in the
sense that we don't assign ->set_child_tid with our own structure. Just
ensure that every arch sets up the PF_IO_WORKER threads like kthreads
in the arch implementation of copy_thread().

Change-Id: Iec4a3c42a39f016b323476d7238f3d36aaf0e6cf
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 320c8057ec)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
 2023-02-07 13:38:14 +00:00
Linus Torvalds
f1947d7c8a Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random 
Pull more random number generator updates from Jason Donenfeld:
 "This time with some large scale treewide cleanups.

  The intent of this pull is to clean up the way callers fetch random
  integers. The current rules for doing this right are:

   - If you want a secure or an insecure random u64, use get_random_u64()

   - If you want a secure or an insecure random u32, use get_random_u32()

     The old function prandom_u32() has been deprecated for a while
     now and is just a wrapper around get_random_u32(). Same for
     get_random_int().

   - If you want a secure or an insecure random u16, use get_random_u16()

   - If you want a secure or an insecure random u8, use get_random_u8()

   - If you want secure or insecure random bytes, use get_random_bytes().

     The old function prandom_bytes() has been deprecated for a while
     now and has long been a wrapper around get_random_bytes()

   - If you want a non-uniform random u32, u16, or u8 bounded by a
     certain open interval maximum, use prandom_u32_max()

     I say "non-uniform", because it doesn't do any rejection sampling
     or divisions. Hence, it stays within the prandom_*() namespace, not
     the get_random_*() namespace.

     I'm currently investigating a "uniform" function for 6.2. We'll see
     what comes of that.

  By applying these rules uniformly, we get several benefits:

   - By using prandom_u32_max() with an upper-bound that the compiler
     can prove at compile-time is ≤65536 or ≤256, internally
     get_random_u16() or get_random_u8() is used, which wastes fewer
     batched random bytes, and hence has higher throughput.

   - By using prandom_u32_max() instead of %, when the upper-bound is
     not a constant, division is still avoided, because
     prandom_u32_max() uses a faster multiplication-based trick instead.

   - By using get_random_u16() or get_random_u8() in cases where the
     return value is intended to indeed be a u16 or a u8, we waste fewer
     batched random bytes, and hence have higher throughput.

  This series was originally done by hand while I was on an airplane
  without Internet. Later, Kees and I worked on retroactively figuring
  out what could be done with Coccinelle and what had to be done
  manually, and then we split things up based on that.

  So while this touches a lot of files, the actual amount of code that's
  hand fiddled is comfortably small"

* tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  prandom: remove unused functions
  treewide: use get_random_bytes() when possible
  treewide: use get_random_u32() when possible
  treewide: use get_random_{u8,u16}() when possible, part 2
  treewide: use get_random_{u8,u16}() when possible, part 1
  treewide: use prandom_u32_max() when possible, part 2
  treewide: use prandom_u32_max() when possible, part 1
 2022-10-16 15:27:07 -07:00
Linus Torvalds
676cb49573 Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 
Pull non-MM updates from Andrew Morton:

 - hfs and hfsplus kmap API modernization (Fabio Francesco)

 - make crash-kexec work properly when invoked from an NMI-time panic
   (Valentin Schneider)

 - ntfs bugfixes (Hawkins Jiawei)

 - improve IPC msg scalability by replacing atomic_t's with percpu
   counters (Jiebin Sun)

 - nilfs2 cleanups (Minghao Chi)

 - lots of other single patches all over the tree!

* tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
  include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype
  proc: test how it holds up with mapping'less process
  mailmap: update Frank Rowand email address
  ia64: mca: use strscpy() is more robust and safer
  init/Kconfig: fix unmet direct dependencies
  ia64: update config files
  nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
  fork: remove duplicate included header files
  init/main.c: remove unnecessary (void*) conversions
  proc: mark more files as permanent
  nilfs2: remove the unneeded result variable
  nilfs2: delete unnecessary checks before brelse()
  checkpatch: warn for non-standard fixes tag style
  usr/gen_init_cpio.c: remove unnecessary -1 values from int file
  ipc/msg: mitigate the lock contention with percpu counter
  percpu: add percpu_counter_add_local and percpu_counter_sub_local
  fs/ocfs2: fix repeated words in comments
  relay: use kvcalloc to alloc page array in relay_alloc_page_array
  proc: make config PROC_CHILDREN depend on PROC_FS
  fs: uninline inode_maybe_inc_iversion()
  ...
 2022-10-12 11:00:22 -07:00
Jason A. Donenfeld
81895a65ec treewide: use prandom_u32_max() when possible, part 1 
Rather than incurring a division or requesting too many random bytes for
the given range, use the prandom_u32_max() function, which only takes
the minimum required bytes from the RNG and avoids divisions. This was
done mechanically with this coccinelle script:

@basic@
expression E;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
typedef u64;
@@
(
- ((T)get_random_u32() % (E))
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ((E) - 1))
+ prandom_u32_max(E * XXX_MAKE_SURE_E_IS_POW2)
|
- ((u64)(E) * get_random_u32() >> 32)
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ~PAGE_MASK)
+ prandom_u32_max(PAGE_SIZE)
)

@multi_line@
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
identifier RAND;
expression E;
@@

-       RAND = get_random_u32();
        ... when != RAND
-       RAND %= (E);
+       RAND = prandom_u32_max(E);

// Find a potential literal
@literal_mask@
expression LITERAL;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
position p;
@@

        ((T)get_random_u32()@p & (LITERAL))

// Add one to the literal.
@script:python add_one@
literal << literal_mask.LITERAL;
RESULT;
@@

value = None
if literal.startswith('0x'):
        value = int(literal, 16)
elif literal[0] in '123456789':
        value = int(literal, 10)
if value is None:
        print("I don't know how to handle %s" % (literal))
        cocci.include_match(False)
elif value == 2**32 - 1 or value == 2**31 - 1 or value == 2**24 - 1 or value == 2**16 - 1 or value == 2**8 - 1:
        print("Skipping 0x%x for cleanup elsewhere" % (value))
        cocci.include_match(False)
elif value & (value + 1) != 0:
        print("Skipping 0x%x because it's not a power of two minus one" % (value))
        cocci.include_match(False)
elif literal.startswith('0x'):
        coccinelle.RESULT = cocci.make_expr("0x%x" % (value + 1))
else:
        coccinelle.RESULT = cocci.make_expr("%d" % (value + 1))

// Replace the literal mask with the calculated result.
@plus_one@
expression literal_mask.LITERAL;
position literal_mask.p;
expression add_one.RESULT;
identifier FUNC;
@@

-       (FUNC()@p & (LITERAL))
+       prandom_u32_max(RESULT)

@collapse_ret@
type T;
identifier VAR;
expression E;
@@

 {
-       T VAR;
-       VAR = (E);
-       return VAR;
+       return E;
 }

@drop_var@
type T;
identifier VAR;
@@

 {
-       T VAR;
        ... when != VAR
 }

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: KP Singh <kpsingh@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz> # for ext4 and sbitmap
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> # for drbd
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2022-10-11 17:42:55 -06:00
Zhen Lei
09cffecaa7 ARM: 9224/1: Dump the stack traces based on the parameter 'regs' of show_regs() 
Function show_regs() is usually called in interrupt handler or exception
handler, it prints the registers specified by the parameter 'regs', then
dump the stack traces. Although not explicitly documented, dump the stack
traces based on'regs' seems to make the most sense. Although dump_stack()
can finally dump the desired content, because 'regs' are saved by the
entry of current interrupt or exception. In the following example we can
see: 1) The backtrace of interrupt or exception handler is not expected,
it causes confusion. 2) Something is printed repeatedly. The line with
the kernel version "CPU: 0 PID: 70 Comm: test0 Not tainted 5.19.0+ #8",
the registers saved in "Exception stack" which 'regs' actually point to.

For example:
rcu: INFO: rcu_sched self-detected stall on CPU
rcu:    0-....: (499 ticks this GP) idle=379/1/0x40000002 softirq=91/91 fqs=249
        (t=500 jiffies g=-911 q=13 ncpus=4)
CPU: 0 PID: 70 Comm: test0 Not tainted 5.19.0+ #8
Hardware name: ARM-Versatile Express
PC is at ktime_get+0x4c/0xe8
LR is at ktime_get+0x4c/0xe8
pc : 8019a474  lr : 8019a474  psr: 60000013
sp : cabd1f28  ip : 00000001  fp : 00000005
r10: 527bf1b8  r9 : 431bde82  r8 : d7b634db
r7 : 0000156e  r6 : 61f234f8  r5 : 00000001  r4 : 80ca86c0
r3 : ffffffff  r2 : fe5bce0b  r1 : 00000000  r0 : 01a431f4
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c5387d  Table: 6121406a  DAC: 00000051
CPU: 0 PID: 70 Comm: test0 Not tainted 5.19.0+ #8  <-----------start----------
Hardware name: ARM-Versatile Express                                          |
 unwind_backtrace from show_stack+0x10/0x14                                   |
 show_stack from dump_stack_lvl+0x40/0x4c                                     |
 dump_stack_lvl from rcu_dump_cpu_stacks+0x10c/0x134                          |
 rcu_dump_cpu_stacks from rcu_sched_clock_irq+0x780/0xaf4                     |
 rcu_sched_clock_irq from update_process_times+0x54/0x74                      |
 update_process_times from tick_periodic+0x3c/0xd4                            |
 tick_periodic from tick_handle_periodic+0x20/0x80                       worthless
 tick_handle_periodic from twd_handler+0x30/0x40                             or
 twd_handler from handle_percpu_devid_irq+0x8c/0x1c8                    duplicated
 handle_percpu_devid_irq from generic_handle_domain_irq+0x24/0x34             |
 generic_handle_domain_irq from gic_handle_irq+0x74/0x88                      |
 gic_handle_irq from generic_handle_arch_irq+0x34/0x44                        |
 generic_handle_arch_irq from call_with_stack+0x18/0x20                       |
 call_with_stack from __irq_svc+0x98/0xb0                                     |
Exception stack(0xcabd1ed8 to 0xcabd1f20)                                     |
1ec0:                                                       01a431f4 00000000 |
1ee0: fe5bce0b ffffffff 80ca86c0 00000001 61f234f8 0000156e d7b634db 431bde82 |
1f00: 527bf1b8 00000005 00000001 cabd1f28 8019a474 8019a474 60000013 ffffffff |
 __irq_svc from ktime_get+0x4c/0xe8                 <---------end--------------
 ktime_get from test_task+0x44/0x110
 test_task from kthread+0xd8/0xf4
 kthread from ret_from_fork+0x14/0x2c
Exception stack(0xcabd1fb0 to 0xcabd1ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000

After replacing dump_stack() with dump_backtrace():
rcu: INFO: rcu_sched self-detected stall on CPU
rcu:    0-....: (500 ticks this GP) idle=8f7/1/0x40000002 softirq=129/129 fqs=241
        (t=500 jiffies g=-915 q=13 ncpus=4)
CPU: 0 PID: 69 Comm: test0 Not tainted 5.19.0+ #9
Hardware name: ARM-Versatile Express
PC is at ktime_get+0x4c/0xe8
LR is at ktime_get+0x4c/0xe8
pc : 8019a494  lr : 8019a494  psr: 60000013
sp : cabddf28  ip : 00000001  fp : 00000002
r10: 0779cb48  r9 : 431bde82  r8 : d7b634db
r7 : 00000a66  r6 : e835ab70  r5 : 00000001  r4 : 80ca86c0
r3 : ffffffff  r2 : ff337d39  r1 : 00000000  r0 : 00cc82c6
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c5387d  Table: 611d006a  DAC: 00000051
 ktime_get from test_task+0x44/0x110
 test_task from kthread+0xd8/0xf4
 kthread from ret_from_fork+0x14/0x2c
Exception stack(0xcabddfb0 to 0xcabddff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
 2022-09-22 08:21:30 +01:00
Kefeng Wang
2be9880dc8 kernel: exit: cleanup release_thread() 
Only x86 has own release_thread(), introduce a new weak release_thread()
function to clean empty definitions in other ARCHs.

Link: https://lkml.kernel.org/r/20220819014406.32266-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Guo Ren <guoren@kernel.org>				[csky]
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Brian Cain <bcain@quicinc.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>			[powerpc]
Acked-by: Stafford Horne <shorne@gmail.com>			[openrisc]
Acked-by: Catalin Marinas <catalin.marinas@arm.com>		[arm64]
Acked-by: Huacai Chen <chenhuacai@kernel.org>			[LoongArch]
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Chris Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Guo Ren <guoren@kernel.org> [csky]
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Xuerui Wang <kernel@xen0n.name>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2022-09-11 21:55:07 -07:00
Todd Poynor
524fee9ed2 ANDROID: ARM: Call idle notifiers 
Change-Id: Id833e61c13baa1783705ac9e9046d1f0cc90c95e
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Liang Chen <cl@rock-chips.com>
(cherry picked from https://android.googlesource.com/kernel/msm
 commit f782a94f598ffd024f89ca01778457a6819a9478)
 2022-07-27 14:38:32 +08:00
Eric W. Biederman
5bd2e97c86 fork: Generalize PF_IO_WORKER handling 
Add fn and fn_arg members into struct kernel_clone_args and test for
them in copy_thread (instead of testing for PF_KTHREAD | PF_IO_WORKER).
This allows any task that wants to be a user space task that only runs
in kernel mode to use this functionality.

The code on x86 is an exception and still retains a PF_KTHREAD test
because x86 unlikely everything else handles kthreads slightly
differently than user space tasks that start with a function.

The functions that created tasks that start with a function
have been updated to set ".fn" and ".fn_arg" instead of
".stack" and ".stack_size".  These functions are fork_idle(),
create_io_thread(), kernel_thread(), and user_mode_thread().

Link: https://lkml.kernel.org/r/20220506141512.516114-4-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
 2022-05-07 09:01:59 -05:00
Eric W. Biederman
c5febea095 fork: Pass struct kernel_clone_args into copy_thread 
With io_uring we have started supporting tasks that are for most
purposes user space tasks that exclusively run code in kernel mode.

The kernel task that exec's init and tasks that exec user mode
helpers are also user mode tasks that just run kernel code
until they call kernel execve.

Pass kernel_clone_args into copy_thread so these oddball
tasks can be supported more cleanly and easily.

v2: Fix spelling of kenrel_clone_args on h8300
Link: https://lkml.kernel.org/r/20220506141512.516114-2-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
 2022-05-07 09:01:48 -05:00
Ard Biesheuvel
9c46929e79 ARM: implement THREAD_INFO_IN_TASK for uniprocessor systems 
On UP systems, only a single task can be 'current' at the same time,
which means we can use a global variable to track it. This means we can
also enable THREAD_INFO_IN_TASK for those systems, as in that case,
thread_info is accessed via current rather than the other way around,
removing the need to store thread_info at the base of the task stack.
This, in turn, permits us to enable IRQ stacks and vmap'ed stacks on UP
systems as well.

To partially mitigate the performance overhead of this arrangement, use
a ADD/ADD/LDR sequence with the appropriate PC-relative group
relocations to load the value of current when needed. This means that
accessing current will still only require a single load as before,
avoiding the need for a literal to carry the address of the global
variable in each function. However, accessing thread_info will now
require this load as well.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
 2021-12-06 12:49:17 +01:00
Linus Torvalds
ab2e7f4b46 Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 
Pull ARM updates from Russell King:

 - Rejig task/thread info to place thread info in task struct

 - Amba bus cleanups (removing unused functions)

 - Handle Amba device probe without IRQ domains

 - Parse linux,usable-memory-range in decompressor

 - Mark OCRAM as read-only after initialisation

 - Refactor page fault handling

 - Fix PXN handling with LPAE kernels

 - Warning and build fixes from Arnd

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits)
  ARM: 9151/1: Thumb2: avoid __builtin_thread_pointer() on Clang
  ARM: 9150/1: Fix PID_IN_CONTEXTIDR regression when THREAD_INFO_IN_TASK=y
  ARM: 9147/1: add printf format attribute to early_print()
  ARM: 9146/1: RiscPC needs older gcc version
  ARM: 9145/1: patch: fix BE32 compilation
  ARM: 9144/1: forbid ftrace with clang and thumb2_kernel
  ARM: 9143/1: add CONFIG_PHYS_OFFSET default values
  ARM: 9142/1: kasan: work around LPAE build warning
  ARM: 9140/1: allow compile-testing without machine record
  ARM: 9137/1: disallow CONFIG_THUMB with ARMv4
  ARM: 9136/1: ARMv7-M uses BE-8, not BE-32
  ARM: 9135/1: kprobes: address gcc -Wempty-body warning
  ARM: 9101/1: sa1100/assabet: convert LEDs to gpiod APIs
  ARM: 9131/1: mm: Fix PXN process with LPAE feature
  ARM: 9130/1: mm: Provide die_kernel_fault() helper
  ARM: 9126/1: mm: Kill page table base print in show_pte()
  ARM: 9127/1: mm: Cleanup access_error()
  ARM: 9129/1: mm: Kill task_struct argument for __do_page_fault()
  ARM: 9128/1: mm: Refactor the __do_page_fault()
  ARM: imx6: mark OCRAM mapping read-only
  ...
 2021-11-02 11:33:15 -07:00
Kees Cook
42a20f86dc sched: Add wrapper for get_wchan() to keep task blocked 
Having a stable wchan means the process must be blocked and for it to
stay that way while performing stack unwinding.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> [arm]
Tested-by: Mark Rutland <mark.rutland@arm.com> [arm64]
Link: https://lkml.kernel.org/r/20211008111626.332092234@infradead.org
 2021-10-15 11:25:14 +02:00
Ard Biesheuvel
50596b7559 ARM: smp: Store current pointer in TPIDRURO register if available 
Now that the user space TLS register is assigned on every return to user
space, we can use it to keep the 'current' pointer while running in the
kernel. This removes the need to access it via thread_info, which is
located at the base of the stack, but will be moved out of there in a
subsequent patch.

Use the __builtin_thread_pointer() helper when available - this will
help GCC understand that reloading the value within the same function is
not necessary, even when using the per-task stack protector (which also
generates accesses via the TLS register). For example, the generated
code below loads TPIDRURO only once, and uses it to access both the
stack canary and the preempt_count fields.

<do_one_initcall>:
       e92d 41f0       stmdb   sp!, {r4, r5, r6, r7, r8, lr}
       ee1d 4f70       mrc     15, 0, r4, cr13, cr0, {3}
       4606            mov     r6, r0
       b094            sub     sp, #80 ; 0x50
       f8d4 34e8       ldr.w   r3, [r4, #1256] ; 0x4e8  <- stack canary
       9313            str     r3, [sp, #76]   ; 0x4c
       f8d4 8004       ldr.w   r8, [r4, #4]             <- preempt count

Co-developed-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
 2021-09-27 16:54:02 +02:00
Ard Biesheuvel
dfbdcda280 gcc-plugins: arm-ssp: Prepare for THREAD_INFO_IN_TASK support 
We will be enabling THREAD_INFO_IN_TASK support for ARM, which means
that we can no longer load the stack canary value by masking the stack
pointer and taking the copy that lives in thread_info. Instead, we will
be able to load it from the task_struct directly, by using the TPIDRURO
register which will hold the current task pointer when
THREAD_INFO_IN_TASK is in effect. This is much more straight-forward,
and allows us to declutter this code a bit while at it.

Note that this means that ARMv6 (non-v6K) SMP systems can no longer use
this feature, but those are quite rare to begin with, so this is a
reasonable trade off.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
 2021-09-27 16:54:01 +02:00
Linus Torvalds
35776f1051 Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 
Pull ARM development updates from Russell King:

 - Rename "mod_init" and "mod_exit" so that initcall debug output is
   actually useful (Randy Dunlap)

 - Update maintainers entries for linux-arm-kernel to indicate it is
   moderated for non-subscribers (Randy Dunlap)

 - Move install rules to arch/arm/Makefile (Masahiro Yamada)

 - Drop unnecessary ARCH_NR_GPIOS definition (Linus Walleij)

 - Don't warn about atags_to_fdt() stack size (David Heidelberg)

 - Speed up unaligned copy_{from,to}_kernel_nofault (Arnd Bergmann)

 - Get rid of set_fs() usage (Arnd Bergmann)

 - Remove checks for GCC prior to v4.6 (Geert Uytterhoeven)

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9118/1: div64: Remove always-true __div64_const32_is_OK() duplicate
  ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK()
  ARM: 9116/1: unified: Remove check for gcc < 4
  ARM: 9110/1: oabi-compat: fix oabi epoll sparse warning
  ARM: 9113/1: uaccess: remove set_fs() implementation
  ARM: 9112/1: uaccess: add __{get,put}_kernel_nofault
  ARM: 9111/1: oabi-compat: rework fcntl64() emulation
  ARM: 9114/1: oabi-compat: rework sys_semtimedop emulation
  ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation
  ARM: 9107/1: syscall: always store thread_info->abi_syscall
  ARM: 9109/1: oabi-compat: add epoll_pwait handler
  ARM: 9106/1: traps: use get_kernel_nofault instead of set_fs()
  ARM: 9115/1: mm/maccess: fix unaligned copy_{from,to}_kernel_nofault
  ARM: 9105/1: atags_to_fdt: don't warn about stack size
  ARM: 9103/1: Drop ARCH_NR_GPIOS definition
  ARM: 9102/1: move theinstall rules to arch/arm/Makefile
  ARM: 9100/1: MAINTAINERS: mark all linux-arm-kernel@infradead list as moderated
  ARM: 9099/1: crypto: rename 'mod_init' & 'mod_exit' functions to be module-specific
 2021-09-09 13:25:49 -07:00
Arnd Bergmann
8ac6f5d7f8 ARM: 9113/1: uaccess: remove set_fs() implementation 
There are no remaining callers of set_fs(), so just remove it
along with all associated code that operates on
thread_info->addr_limit.

There are still further optimizations that can be done:

- In get_user(), the address check could be moved entirely
  into the out of line code, rather than passing a constant
  as an argument,

- I assume the DACR handling can be simplified as we now
  only change it during user access when CONFIG_CPU_SW_DOMAIN_PAN
  is set, but not during set_fs().

Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
 2021-08-20 11:39:27 +01:00
Alexey Dobriyan
39f75da7bc isystem: trim/fixup stdarg.h and other headers 
Delete/fixup few includes in anticipation of global -isystem compile
option removal.

Note: crypto/aegis128-neon-inner.c keeps <stddef.h> due to redefinition
of uintptr_t error (one definition comes from <stddef.h>, another from
<linux/types.h>).

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2021-08-19 09:02:55 +09:00
Peter Zijlstra
b03fbd4ff2 sched: Introduce task_is_running() 
Replace a bunch of 'p->state == TASK_RUNNING' with a new helper:
task_is_running(p).

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210611082838.222401495@infradead.org
 2021-06-18 11:43:07 +02:00
Maninder Singh
5aa6b70ed1 arm: print alloc free paths for address in registers 
In case of a use after free kernel oops, the freeing path of the object
is required to debug futher.  In most of cases the object address is
present in one of the registers.

Thus check the register's address and if it belongs to slab, print its
alloc and free path.

e.g. in the below issue register r6 belongs to slab, and a use after
free issue occurred on one of its dereferenced values:

  Unable to handle kernel paging request at virtual address 6b6b6b6f
  ....
  pc : [<c0538afc>]    lr : [<c0465674>]    psr: 60000013
  sp : c8927d40  ip : ffffefff  fp : c8aa8020
  r10: c8927e10  r9 : 00000001  r8 : 00400cc0
  r7 : 00000000  r6 : c8ab0180  r5 : c1804a80  r4 : c8aa8008
  r3 : c1a5661c  r2 : 00000000  r1 : 6b6b6b6b  r0 : c139bf48
  .....
  Register r6 information: slab kmalloc-64 start c8ab0140 data offset 64 pointer offset 0 size 64 allocated at meminfo_proc_show+0x40/0x4fc
      meminfo_proc_show+0x40/0x4fc
      seq_read_iter+0x18c/0x4c4
      proc_reg_read_iter+0x84/0xac
      generic_file_splice_read+0xe8/0x17c
      splice_direct_to_actor+0xb8/0x290
      do_splice_direct+0xa0/0xe0
      do_sendfile+0x2d0/0x438
      sys_sendfile64+0x12c/0x140
      ret_fast_syscall+0x0/0x58
      0xbeeacde4
   Free path:
      meminfo_proc_show+0x5c/0x4fc
      seq_read_iter+0x18c/0x4c4
      proc_reg_read_iter+0x84/0xac
      generic_file_splice_read+0xe8/0x17c
      splice_direct_to_actor+0xb8/0x290
      do_splice_direct+0xa0/0xe0
      do_sendfile+0x2d0/0x438
      sys_sendfile64+0x12c/0x140
      ret_fast_syscall+0x0/0x58
      0xbeeacde4

Link: https://lkml.kernel.org/r/1615891032-29160-3-git-send-email-maninder1.s@samsung.com
Co-developed-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-05-07 00:26:34 -07:00
Jens Axboe
4727dc20e0 arch: setup PF_IO_WORKER threads like PF_KTHREAD 
PF_IO_WORKER are kernel threads too, but they aren't PF_KTHREAD in the
sense that we don't assign ->set_child_tid with our own structure. Just
ensure that every arch sets up the PF_IO_WORKER threads like kthreads
in the arch implementation of copy_thread().

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2021-02-21 17:25:22 -07:00
Linus Torvalds
37373d9c37 Merge branch 'regset.followup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 
Pull regset updates from Al Viro:
 "Dead code removal, mostly.

  The only exception is a bit of cleanups on itanic (getting rid of
  redundant stack unwinds - each access_uarea() call does it and we call
  that 7 times in a row in ptrace_[sg]etregs(), *after* having done it
  ourselves in the caller; location where the user registers have been
  spilled won't change under us, and we can bloody well just call
  access_elf_reg() directly, giving it the unw_frame_info we'd
  calculated for our own purposes)"

* 'regset.followup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  c6x: kill ELF_CORE_COPY_FPREGS
  whack-a-mole: USE_ELF_CORE_DUMP
  [ia64] ptrace_[sg]etregs(): use access_elf_reg() instead of access_uarea()
  [ia64] missed cleanups from switch to regset coredumps
  arm: kill dump_task_regs()
 2020-12-15 19:09:44 -08:00
Peter Zijlstra
58c644ba51 sched/idle: Fix arch_cpu_idle() vs tracing 
We call arch_cpu_idle() with RCU disabled, but then use
local_irq_{en,dis}able(), which invokes tracing, which relies on RCU.

Switch all arch_cpu_idle() implementations to use
raw_local_irq_{en,dis}able() and carefully manage the
lockdep,rcu,tracing state like we do in entry.

(XXX: we really should change arch_cpu_idle() to not return with
interrupts enabled)

Reported-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/20201120114925.594122626@infradead.org
 2020-11-24 16:47:35 +01:00
Al Viro
1510723087 arm: kill dump_task_regs() 
the last user had been fdpic

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
 2020-10-25 20:03:02 -04:00