Merge tag 'irqchip-fixes-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

 - Fix a MIPS bug where irqdomain loopkups could occur in a context
   where RCU is not allowed

 - Fix a documentation bug for handle_domain_irq

Since d4a45c68 ("irqdomain: Protect the linear revmap with RCU"),
any irqdomain lookup requires the RCU read lock to be held.

This assumes that the architecture code will be structured such as
irq_enter() will be called *before* the interrupt is looked up
in the irq domain. However, this isn't the case for MIPS, and a number
of drivers are structured to do it the other way around when handling
an interrupt in their root irqchip (secondary irqchips are OK by
construction).

This results in a RCU splat on a lockdep-enabled kernel when the kernel
takes an interrupt from idle, as reported by Guenter Roeck.

Note that this could have fired previously if any driver had used
tree-based irqdomain, which always had the RCU requirement.

To solve this, provide a MIPS-specific helper (do_domain_IRQ())
as the pendent of do_IRQ() that will do thing in the right order
(and maybe save some cycles in the process).

Ideally, MIPS would be moved over to using handle_domain_irq(),
but that's much more ambitious.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
[maz: add dependency on CONFIG_IRQ_DOMAIN after report from the kernelci bot]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20210705172352.GA56304@roeck-us.net
Link: https://lore.kernel.org/r/20210706110647.3979002-1-maz@kernel.org

Pull drm fixes from Dave Airlie:
 "Some fixes for rc1 that came in the past weeks, mainly a bunch of
  amdgpu fixes, some i915 and the rest are misc around the place. I'm
  sending this a bit early so some more stuff may show up, but I'll
  probably take tomorrow off.

  dma-buf:
   - doc fixes

  amdgpu:
   - Misc Navi fixes
   - Powergating fix
   - Yellow Carp updates
   - Beige Goby updates
   - S0ix fix
   - Revert overlay validation fix
   - GPU reset fix for DC
   - PPC64 fix
   - Add new dimgrey cavefish DID
   - RAS fix
   - TTM fixes

  amdkfd:
   - SVM fixes

  radeon:
   - Fix missing drm_gem_object_put in error path
   - NULL ptr deref fix

  i915:
   - display DP VSC fix
   - DG1 display fix
   - IRQ fixes
   - IRQ demidlayering

  gma500:
   - bo leaks in error paths fixed"

* tag 'drm-next-2021-07-08-1' of git://anongit.freedesktop.org/drm/drm: (52 commits)
  drm/i915: Drop all references to DRM IRQ midlayer
  drm/i915: Use the correct IRQ during resume
  drm/i915/display/dg1: Correctly map DPLLs during state readout
  drm/i915/display: Do not zero past infoframes.vsc
  drm/amdgpu: Conditionally reset SDMA RAS error counts
  drm/amdkfd: Maintain svm_bo reference in page->zone_device_data
  drm/amdkfd: add invalid pages debug at vram migration
  drm/amdkfd: skip migration for pages already in VRAM
  drm/amdkfd: skip invalid pages during migrations
  drm/amdkfd: classify and map mixed svm range pages in GPU
  drm/amdkfd: use hmm range fault to get both domain pfns
  drm/amdgpu: get owner ref in validate and map
  drm/amdkfd: set owner ref to svm range prefault
  drm/amdkfd: add owner ref param to get hmm pages
  drm/amdkfd: device pgmap owner at the svm migrate init
  drm/amdkfd: inc counter on child ranges with xnack off
  drm/amd/display: Extend DMUB diagnostic logging to DCN3.1
  drm/amdgpu: Update NV SIMD-per-CU to 2
  drm/amdgpu: add new dimgrey cavefish DID
  drm/amd/pm: skip PrepareMp1ForUnload message in s0ix
  ...

Merge tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This contains mostly various fixes, cleanups and some conversions to
  the atomic API. One noteworthy change is that PWM consumers can now
  pass a hint to the PWM core about the PWM usage, enabling PWM
  providers to implement various optimizations.

  There's also a fair bit of simplification here with the addition of
  some device-managed helpers as well as unification between the DT and
  ACPI firmware interfaces"

* tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (50 commits)
  pwm: Remove redundant assignment to pointer pwm
  pwm: ep93xx: Fix read of uninitialized variable ret
  pwm: ep93xx: Prepare clock before using it
  pwm: ep93xx: Unfold legacy callbacks into ep93xx_pwm_apply()
  pwm: ep93xx: Implement .apply callback
  pwm: vt8500: Only unprepare the clock after the pwmchip was removed
  pwm: vt8500: Drop if with an always false condition
  pwm: tegra: Assert reset only after the PWM was unregistered
  pwm: tegra: Don't needlessly enable and disable the clock in .remove()
  pwm: tegra: Don't modify HW state in .remove callback
  pwm: tegra: Drop an if block with an always false condition
  pwm: core: Simplify some devm_*pwm*() functions
  pwm: core: Remove unused devm_pwm_put()
  pwm: core: Unify fwnode checks in the module
  pwm: core: Reuse fwnode_to_pwmchip() in ACPI case
  pwm: core: Convert to use fwnode for matching
  docs: firmware-guide: ACPI: Add a PWM example
  dt-bindings: pwm: pwm-tiecap: Add compatible string for AM64 SoC
  dt-bindings: pwm: pwm-tiecap: Convert to json schema
  pwm: sprd: Don't check the return code of pwmchip_remove()
  ...

Pull more clk updates from Stephen Boyd:

 - A handful of fixes for lmk04832 driver

 - Migrate the basic clk divider to use determine rate ops

 - Fix modpost build for hisilicon hi3559a driver

 - Actually set the parent in k210_clk_set_parent()

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  Revert "clk: divider: Switch from .round_rate to .determine_rate by default"
  clk: hisilicon: hi3559a: Drop __init markings everywhere
  clk: meson: regmap: switch to determine_rate for the dividers
  clk: divider: Switch from .round_rate to .determine_rate by default
  clk: divider: Add re-usable determine_rate implementations
  clk: k210: Fix k210_clk_set_parent()
  clk: lmk04832: Fix spelling mistakes in dev_err messages and comments
  clk: lmk04832: fix return value check in lmk04832_probe()
  clk: stm32mp1: fix missing spin_lock_init()

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Fix dsm_label_utf16s_to_utf8s() buffer overrun (Krzysztof
     Wilczyński)
   - Rely on lengths from scnprintf(), dsm_label_utf16s_to_utf8s()
     (Krzysztof Wilczyński)
   - Use sysfs_emit() and sysfs_emit_at() in "show" functions (Krzysztof
     Wilczyński)
   - Fix 'resource_alignment' newline issues (Krzysztof Wilczyński)
   - Add 'devspec' newline (Krzysztof Wilczyński)
   - Dynamically map ECAM regions (Russell King)

  Resource management:
   - Coalesce host bridge contiguous apertures (Kai-Heng Feng)

  PCIe native device hotplug:
   - Ignore Link Down/Up caused by DPC (Lukas Wunner)

  Power management:
   - Leave Apple Thunderbolt controllers on for s2idle or standby
     (Konstantin Kharlamov)

  Virtualization:
   - Work around Huawei Intelligent NIC VF FLR erratum (Chiqijun)
   - Clarify error message for unbound IOV devices (Moritz Fischer)
   - Add pci_reset_bus_function() Secondary Bus Reset interface (Raphael
     Norwitz)

  Peer-to-peer DMA:
   - Simplify distance calculation (Christoph Hellwig)
   - Finish RCU conversion of pdev->p2pdma (Eric Dumazet)
   - Rename upstream_bridge_distance() and rework doc (Logan Gunthorpe)
   - Collect acs list in stack buffer to avoid sleeping (Logan
     Gunthorpe)
   - Use correct calc_map_type_and_dist() return type (Logan Gunthorpe)
   - Warn if host bridge not in whitelist (Logan Gunthorpe)
   - Refactor pci_p2pdma_map_type() (Logan Gunthorpe)
   - Avoid pci_get_slot(), which may sleep (Logan Gunthorpe)

  Altera PCIe controller driver:
   - Add Joyce Ooi as Altera PCIe maintainer (Joyce Ooi)

  Broadcom iProc PCIe controller driver:
   - Fix multi-MSI base vector number allocation (Sandor Bodo-Merle)
   - Support multi-MSI only on uniprocessor kernel (Sandor Bodo-Merle)

  Freescale i.MX6 PCIe controller driver:
   - Limit DBI register length for imx6qp PCIe (Richard Zhu)
   - Add "vph-supply" for PHY supply voltage (Richard Zhu)
   - Enable PHY internal regulator when supplied >3V (Richard Zhu)
   - Remove imx6_pcie_probe() redundant error message (Zhen Lei)

  Intel Gateway PCIe controller driver:
   - Fix INTx enable (Martin Blumenstingl)

  Marvell Aardvark PCIe controller driver:
   - Fix checking for PIO Non-posted Request (Pali Rohár)
   - Implement workaround for the readback value of VEND_ID (Pali Rohár)

  MediaTek PCIe controller driver:
   - Remove redundant error printing in mtk_pcie_subsys_powerup() (Zhen
     Lei)

  MediaTek PCIe Gen3 controller driver:
   - Add missing MODULE_DEVICE_TABLE (Zou Wei)

  Microchip PolarFlare PCIe controller driver:
   - Make struct event_descs static (Krzysztof Wilczyński)

  Microsoft Hyper-V host bridge driver:
   - Fix race condition when removing the device (Long Li)
   - Remove bus device removal unused refcount/functions (Long Li)

  Mobiveil PCIe controller driver:
   - Remove unused readl and writel functions (Krzysztof Wilczyński)

  NVIDIA Tegra PCIe controller driver:
   - Add missing MODULE_DEVICE_TABLE (Zou Wei)

  NVIDIA Tegra194 PCIe controller driver:
   - Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift (Jon Hunter)
   - Fix host initialization during resume (Vidya Sagar)

  Rockchip PCIe controller driver:
   - Register IRQ handlers after device and data are ready (Javier
     Martinez Canillas)"

* tag 'pci-v5.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
  PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma
  PCI: xgene: Annotate __iomem pointer
  PCI: Fix kernel-doc formatting
  PCI: cpcihp: Declare cpci_debug in header file
  MAINTAINERS: Add Joyce Ooi as Altera PCIe maintainer
  PCI: rockchip: Register IRQ handlers after device and data are ready
  PCI: tegra194: Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift
  PCI: aardvark: Implement workaround for the readback value of VEND_ID
  PCI: aardvark: Fix checking for PIO Non-posted Request
  PCI: tegra194: Fix host initialization during resume
  PCI: tegra: Add missing MODULE_DEVICE_TABLE
  PCI: imx6: Enable PHY internal regulator when supplied >3V
  dt-bindings: imx6q-pcie: Add "vph-supply" for PHY supply voltage
  PCI: imx6: Limit DBI register length for imx6qp PCIe
  PCI: imx6: Remove imx6_pcie_probe() redundant error message
  PCI: intel-gw: Fix INTx enable
  PCI: iproc: Support multi-MSI only on uniprocessor kernel
  PCI: iproc: Fix multi-MSI base vector number allocation
  PCI: mediatek-gen3: Add missing MODULE_DEVICE_TABLE
  PCI: Dynamically map ECAM regions
  ...

We must properly handle an errors when we increase the rlimit counter
and the ucounts reference counter. We have to this with RCU protection
to prevent possible use-after-free that could occur due to concurrent
put_cred_rcu().

The following reproducer triggers the problem:

  $ cat testcase.sh
  case "${STEP:-0}" in
  0)
	ulimit -Si 1
	ulimit -Hi 1
	STEP=1 unshare -rU "$0"
	killall sleep
	;;
  1)
	for i in 1 2 3 4 5; do unshare -rU sleep 5 & done
	;;
  esac

with the KASAN report being along the lines of

  BUG: KASAN: use-after-free in put_ucounts+0x17/0xa0
  Write of size 4 at addr ffff8880045f031c by task swapper/2/0

  CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.13.0+ #19
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-alt4 04/01/2014
  Call Trace:
   <IRQ>
   put_ucounts+0x17/0xa0
   put_cred_rcu+0xd5/0x190
   rcu_core+0x3bf/0xcb0
   __do_softirq+0xe3/0x341
   irq_exit_rcu+0xbe/0xe0
   sysvec_apic_timer_interrupt+0x6a/0x90
   </IRQ>
   asm_sysvec_apic_timer_interrupt+0x12/0x20
   default_idle_call+0x53/0x130
   do_idle+0x311/0x3c0
   cpu_startup_entry+0x14/0x20
   secondary_startup_64_no_verify+0xc2/0xcb

  Allocated by task 127:
   kasan_save_stack+0x1b/0x40
   __kasan_kmalloc+0x7c/0x90
   alloc_ucounts+0x169/0x2b0
   set_cred_ucounts+0xbb/0x170
   ksys_unshare+0x24c/0x4e0
   __x64_sys_unshare+0x16/0x20
   do_syscall_64+0x37/0x70
   entry_SYSCALL_64_after_hwframe+0x44/0xae

  Freed by task 0:
   kasan_save_stack+0x1b/0x40
   kasan_set_track+0x1c/0x30
   kasan_set_free_info+0x20/0x30
   __kasan_slab_free+0xeb/0x120
   kfree+0xaa/0x460
   put_cred_rcu+0xd5/0x190
   rcu_core+0x3bf/0xcb0
   __do_softirq+0xe3/0x341

  The buggy address belongs to the object at ffff8880045f0300
   which belongs to the cache kmalloc-192 of size 192
  The buggy address is located 28 bytes inside of
   192-byte region [ffff8880045f0300, ffff8880045f03c0)
  The buggy address belongs to the page:
  page:000000008de0a388 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880045f0000 pfn:0x45f0
  flags: 0x100000000000200(slab|node=0|zone=1)
  raw: 0100000000000200 ffffea00000f4640 0000000a0000000a ffff888001042a00
  raw: ffff8880045f0000 000000008010000d 00000001ffffffff 0000000000000000
  page dumped because: kasan: bad access detected

  Memory state around the buggy address:
   ffff8880045f0200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
   ffff8880045f0280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
  >ffff8880045f0300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                              ^
   ffff8880045f0380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
   ffff8880045f0400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ==================================================================
  Disabling lock debugging due to kernel taint

Fixes: d6469690 ("Reimplement RLIMIT_SIGPENDING on top of ucounts")
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Alexey Gladkov <legion@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'drm-misc-next-fixes-2021-07-01' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

Short summary of fixes pull:

 * amdgpu: TTM fixes
 * dma-buf: Doc fixes
 * gma500: Fix potential BO leaks in error handling
 * radeon: Fix NULL-ptr deref
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YN2GK2SH64yqXqh9@linux-uq9g

Merge tag 'drm-intel-next-fixes-2021-07-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

One fix targeting stable for display DP VSC, plus DG1 display fix and
a bug fix of IRQs usages and cleanup references to the DRM IRQ midlayer.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YOXDp/+CFDgJ2/7f@intel.com

Merge tag 'amd-drm-next-5.14-2021-07-01' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

amd-drm-next-5.14-2021-07-01:

amdgpu:
- Misc Navi fixes
- Powergating fix
- Yellow Carp updates
- Beige Goby updates
- S0ix fix
- Revert overlay validation fix
- GPU reset fix for DC
- PPC64 fix
- Add new dimgrey cavefish DID
- RAS fix

amdkfd:
- SVM fixes

radeon:
- Fix missing drm_gem_object_put in error path
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210701042241.25449-1-alexander.deucher@amd.com

Pull more ACPI updates from Rafael Wysocki:
 "These include fixes of the recently introduced support for the
  Platform Runtime Mechanism (PRM) feature, a new backlight quirk, a
  suspend-to-idle wakeup fix for non-Intel platforms and a fix for the
  AMBA bus resource list in /proc/iomem.

  Specifics:

   - Fix up the recently added Platform Runtime Mechanism (PRM) support
     by correnting a couple of implementation mistakes in it and adding
     a Kconfig help text to describe it (Aubrey Li, Rafael Wysocki).

   - Add backlight quirk for Dell Vostro 3350 (Hans de Goede).

   - Avoid spurious wakeups from suspend-to-idle on non-Intel platforms
     by restricting special EC GPE handling to the Intel ones (Mario
     Limonciello).

   - Modify the AMBA bus support in ACPI to avoid adding using resource
     names in /proc/iomem (Liguang Zhang)"

* tag 'acpi-5.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Do not singal PRM support if not enabled
  ACPI: Correct \_SB._OSC bit definition for PRM
  ACPI: Kconfig: Provide help text for the ACPI_PRMT option
  ACPI: PM: Only mark EC GPE for wakeup on Intel systems
  ACPI: video: Add quirk for the Dell Vostro 3350
  ACPI: AMBA: Fix resource name in /proc/iomem

Pull more power management updates from Rafael Wysocki:
 "These include cpufreq core simplifications and fixes, cpufreq driver
  updates, cpuidle driver update, a generic power domains (genpd)
  locking fix and a debug-related simplification of the PM core.

  Specifics:

   - Drop the ->stop_cpu() (not really useful) and ->resolve_freq()
     (unused) cpufreq driver callbacks and modify the users of the
     former accordingly (Viresh Kumar, Rafael Wysocki).

   - Add frequency invariance support to the ACPI CPPC cpufreq driver
     again along with the related fixes and cleanups (Viresh Kumar).

   - Update the Meditak, qcom and SCMI ARM cpufreq drivers (Fabien
     Parent, Seiya Wang, Sibi Sankar, Christophe JAILLET).

   - Rename black/white-lists in the DT cpufreq driver (Viresh Kumar).

   - Add generic performance domains support to the dvfs DT bindings
     (Sudeep Holla).

   - Refine locking in the generic power domains (genpd) support code to
     avoid lock dependency issues (Stephen Boyd).

   - Update the MSM and qcom ARM cpuidle drivers (Bartosz Dudziak).

   - Simplify the PM core debug code by using ktime_us_delta() to
     compute time interval lengths (Mark-PK Tsai)"

* tag 'pm-5.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (21 commits)
  PM: domains: Shrink locking area of the gpd_list_lock
  PM: sleep: Use ktime_us_delta() in initcall_debug_report()
  cpufreq: CPPC: Add support for frequency invariance
  arch_topology: Avoid use-after-free for scale_freq_data
  cpufreq: CPPC: Pass structure instance by reference
  cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init
  cpufreq: Remove ->resolve_freq()
  cpufreq: Reuse cpufreq_driver_resolve_freq() in __cpufreq_driver_target()
  cpufreq: Remove the ->stop_cpu() driver callback
  cpufreq: powernv: Migrate to ->exit() callback instead of ->stop_cpu()
  cpufreq: CPPC: Migrate to ->exit() callback instead of ->stop_cpu()
  cpufreq: intel_pstate: Combine ->stop_cpu() and ->offline()
  cpuidle: qcom: Add SPM register data for MSM8226
  dt-bindings: arm: msm: Add SAW2 for MSM8226
  dt-bindings: cpufreq: update cpu type and clock name for MT8173 SoC
  clk: mediatek: remove deprecated CLK_INFRA_CA57SEL for MT8173 SoC
  cpufreq: dt: Rename black/white-lists
  cpufreq: scmi: Fix an error message
  cpufreq: mediatek: add support for mt8365
  dt-bindings: dvfs: Add support for generic performance domains
  ...

Pull power supply and reset updates from Sebastian Reichel:
 "Battery/charger driver changes:

   - convert charger-manager binding to YAML

   - drop bd70528-charger driver

   - drop pm2301-charger driver

   - introduce rt5033-battery driver

   - misc improvements and fixes"

* tag 'for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (42 commits)
  power: supply: ab8500: Fix an old bug
  power: supply: axp288_fuel_gauge: remove redundant continue statement
  power: supply: axp288_fuel_gauge: Make "T3 MRD" no_battery_list DMI entry more generic
  power: supply: axp288_fuel_gauge: Rename fuel_gauge_blacklist to no_battery_list
  power: supply: bq24190_charger: drop of_match_ptr() from device ID table
  drivers: power: add missing MODULE_DEVICE_TABLE in keystone-reset.c
  power: supply: ab8500: add missing MODULE_DEVICE_TABLE
  power: supply: charger-manager: add missing MODULE_DEVICE_TABLE
  power: reset: regulator-poweroff: add missing MODULE_DEVICE_TABLE
  power: supply: cpcap-charger: get the battery inserted infomation from cpcap-battery
  power: supply: cpcap-battery: invalidate config when incompatible measurements are read
  power: supply: axp20x_battery: allow disabling battery charging
  power: supply: max17040: drop unused platform data support
  power: supply: max17040: simplify POWER_SUPPLY_PROP_ONLINE
  power: supply: max17040: remove non-working POWER_SUPPLY_PROP_STATUS
  power: reset: at91-sama5d2_shdwc: Remove redundant error printing in at91_shdwc_probe()
  power: reset: gpio-poweroff: add missing MODULE_DEVICE_TABLE
  power: supply: rt5033_battery: Fix device tree enumeration
  dt-bindings: power: supply: Add DT schema for richtek,rt5033-battery
  power: supply: Drop BD70528 support
  ...

Pull watchdog updates from Wim Van Sebroeck:

 - Add Mstar MSC313e WDT driver

 - Add support for sama7g5-wdt

 - Add compatible for SC7280 SoC

 - Add compatible for Mediatek MT8195

 - sbsa: Support architecture version 1

 - Removal of the MV64x60 watchdog driver

 - Extra PCI IDs for hpwdt

 - Add hrtimer-based pretimeout feature

 - Add {min,max}_timeout sysfs nodes

 - keembay timeout and pre-timeout handling

 - Several fixes, cleanups and improvements

* tag 'linux-watchdog-5.14-rc1' of git://www.linux-watchdog.org/linux-watchdog: (56 commits)
  watchdog: iTCO_wdt: use dev_err() instead of pr_err()
  watchdog: Add Mstar MSC313e WDT driver
  dt-bindings: watchdog: Add Mstar MSC313e WDT devicetree bindings documentation
  watchdog: iTCO_wdt: Account for rebooting on second timeout
  dt-bindings: watchdog: Convert arm,sbsa-gwdt to DT schema
  dt-bindings: watchdog: sama5d4-wdt: add compatible for sama7g5-wdt
  watchdog: sama5d4_wdt: add support for sama7g5-wdt
  dt-bindings: watchdog: sama5d4-wdt: convert to yaml
  watchdog: ziirave_wdt: Remove VERSION_FMT defines and add sysfs newlines
  dt-bindings: watchdog: Add compatible for Mediatek MT8195
  dt-bindings: watchdog: dw-wdt: add description for rk3568
  watchdog: imx_sc_wdt: fix pretimeout
  watchdog: diag288_wdt: Remove redundant assignment
  watchdog: Add hrtimer-based pretimeout feature
  dt-bindings: watchdog: Add compatible for SC7280 SoC
  watchdog: qcom: Move suspend/resume to suspend_late/resume_early
  watchdog: Fix a typo in the file orion_wdt.c
  watchdog: jz4740: Fix return value check in jz4740_wdt_probe()
  watchdog: Remove MV64x60 watchdog driver
  doc: mtk-wdt: support pre-timeout when the bark irq is available
  ...

Pull nfsd updates from Bruce Fields:

 - add tracepoints for callbacks and for client creation and destruction

 - cache the mounts used for server-to-server copies

 - expose callback information in /proc/fs/nfsd/clients/*/info

 - don't hold locks unnecessarily while waiting for commits

 - update NLM to use xdr_stream, as we have for NFSv2/v3/v4

* tag 'nfsd-5.14' of git://linux-nfs.org/~bfields/linux: (69 commits)
  nfsd: fix NULL dereference in nfs3svc_encode_getaclres
  NFSD: Prevent a possible oops in the nfs_dirent() tracepoint
  nfsd: remove redundant assignment to pointer 'this'
  nfsd: Reduce contention for the nfsd_file nf_rwsem
  lockd: Update the NLMv4 SHARE results encoder to use struct xdr_stream
  lockd: Update the NLMv4 nlm_res results encoder to use struct xdr_stream
  lockd: Update the NLMv4 TEST results encoder to use struct xdr_stream
  lockd: Update the NLMv4 void results encoder to use struct xdr_stream
  lockd: Update the NLMv4 FREE_ALL arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 SHARE arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 SM_NOTIFY arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 nlm_res arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 UNLOCK arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 CANCEL arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 LOCK arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 TEST arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 void arguments decoder to use struct xdr_stream
  lockd: Update the NLMv1 SHARE results encoder to use struct xdr_stream
  lockd: Update the NLMv1 nlm_res results encoder to use struct xdr_stream
  lockd: Update the NLMv1 TEST results encoder to use struct xdr_stream
  ...

The pointer pwm is being initialized with a value that is never read and
it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

Pull module updates from Jessica Yu:

 - Fix incorrect logic in module_kallsyms_on_each_symbol()

 - Fix for a Coccinelle warning

* tag 'modules-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: correctly exit module_kallsyms_on_each_symbol when fn() != 0
  kernel/module: Use BUG_ON instead of if condition followed by BUG

* acpi-misc:
  ACPI: AMBA: Fix resource name in /proc/iomem

* acpi-video:
  ACPI: video: Add quirk for the Dell Vostro 3350

* acpi-prm:
  ACPI: Do not singal PRM support if not enabled
  ACPI: Correct \_SB._OSC bit definition for PRM
  ACPI: Kconfig: Provide help text for the ACPI_PRMT option

* pm-cpuidle:
  cpuidle: qcom: Add SPM register data for MSM8226
  dt-bindings: arm: msm: Add SAW2 for MSM8226

* pm-sleep:
  PM: sleep: Use ktime_us_delta() in initcall_debug_report()

* pm-domains:
  PM: domains: Shrink locking area of the gpd_list_lock

Pull x86 fpu updates from Thomas Gleixner:
 "Fixes and improvements for FPU handling on x86:

   - Prevent sigaltstack out of bounds writes.

     The kernel unconditionally writes the FPU state to the alternate
     stack without checking whether the stack is large enough to
     accomodate it.

     Check the alternate stack size before doing so and in case it's too
     small force a SIGSEGV instead of silently corrupting user space
     data.

   - MINSIGSTKZ and SIGSTKSZ are constants in signal.h and have never
     been updated despite the fact that the FPU state which is stored on
     the signal stack has grown over time which causes trouble in the
     field when AVX512 is available on a CPU. The kernel does not expose
     the minimum requirements for the alternate stack size depending on
     the available and enabled CPU features.

     ARM already added an aux vector AT_MINSIGSTKSZ for the same reason.
     Add it to x86 as well.

   - A major cleanup of the x86 FPU code. The recent discoveries of
     XSTATE related issues unearthed quite some inconsistencies,
     duplicated code and other issues.

     The fine granular overhaul addresses this, makes the code more
     robust and maintainable, which allows to integrate upcoming XSTATE
     related features in sane ways"

* tag 'x86-fpu-2021-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (74 commits)
  x86/fpu/xstate: Clear xstate header in copy_xstate_to_uabi_buf() again
  x86/fpu/signal: Let xrstor handle the features to init
  x86/fpu/signal: Handle #PF in the direct restore path
  x86/fpu: Return proper error codes from user access functions
  x86/fpu/signal: Split out the direct restore code
  x86/fpu/signal: Sanitize copy_user_to_fpregs_zeroing()
  x86/fpu/signal: Sanitize the xstate check on sigframe
  x86/fpu/signal: Remove the legacy alignment check
  x86/fpu/signal: Move initial checks into fpu__restore_sig()
  x86/fpu: Mark init_fpstate __ro_after_init
  x86/pkru: Remove xstate fiddling from write_pkru()
  x86/fpu: Don't store PKRU in xstate in fpu_reset_fpstate()
  x86/fpu: Remove PKRU handling from switch_fpu_finish()
  x86/fpu: Mask PKRU from kernel XRSTOR[S] operations
  x86/fpu: Hook up PKRU into ptrace()
  x86/fpu: Add PKRU storage outside of task XSAVE buffer
  x86/fpu: Dont restore PKRU in fpregs_restore_userspace()
  x86/fpu: Rename xfeatures_mask_user() to xfeatures_mask_uabi()
  x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs()
  x86/fpu: Rename __fpregs_load_activate() to fpregs_restore_userregs()
  ...

Pull xen updates from Juergen Gross:
 "Only two minor patches this time: one cleanup patch and one patch
  refreshing a Xen header"

* tag 'for-linus-5.14-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: sync include/xen/interface/io/ring.h with Xen's newest version
  xen: Use DEVICE_ATTR_*() macro

Merge tag 'Wimplicit-fallthrough-clang-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull more fallthrough fixes from Gustavo Silva:
 "Fix maore fall-through warnings when building the kernel with clang
  and '-Wimplicit-fallthrough'"

* tag 'Wimplicit-fallthrough-clang-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  Input: Fix fall-through warning for Clang
  scsi: aic94xx: Fix fall-through warning for Clang
  i3c: master: cdns: Fix fall-through warning for Clang
  net/mlx4: Fix fall-through warning for Clang

Pull hwspinlock updates from Bjorn Andersson:
 "This adds a driver for the hardware spinlock in Allwinner sun6i"

* tag 'hwlock-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  dt-bindings: hwlock: sun6i: Fix various warnings in binding
  hwspinlock: add sun6i hardware spinlock support
  dt-bindings: hwlock: add sun6i_hwspinlock

Pull remoteproc updates from Bjorn Andersson:
 "This adds support for controlling the PRU and R5F clusters on the TI
  AM64x, the remote processor in i.MX7ULP, i.MX8MN/P and i.MX8ULP NXP
  and the audio, compute and modem remoteprocs in the Qualcomm SC8180x
  platform.

  It fixes improper ordering of cdev and device creation of the
  remoteproc control interface and it fixes resource leaks in the error
  handling path of rproc_add() and the Qualcomm modem and wifi
  remoteproc drivers.

  Lastly it fixes a few build warnings and replace the dummy parameter
  passed in the mailbox api of the stm32 driver to something not living
  on the stack"

* tag 'rproc-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (32 commits)
  remoteproc: qcom: pas: Add SC8180X adsp, cdsp and mpss
  dt-bindings: remoteproc: qcom: pas: Add SC8180X adsp, cdsp and mpss
  remoteproc: imx_rproc: support i.MX8ULP
  dt-bindings: remoteproc: imx_rproc: support i.MX8ULP
  remoteproc: stm32: fix mbox_send_message call
  remoteproc: core: Cleanup device in case of failure
  remoteproc: core: Fix cdev remove and rproc del
  remoteproc: core: Move validate before device add
  remoteproc: core: Move cdev add before device add
  remoteproc: pru: Add support for various PRU cores on K3 AM64x SoCs
  dt-bindings: remoteproc: pru: Update bindings for K3 AM64x SoCs
  remoteproc: qcom_wcnss: Use devm_qcom_smem_state_get()
  remoteproc: qcom_q6v5: Use devm_qcom_smem_state_get() to fix missing put()
  soc: qcom: smem_state: Add devm_qcom_smem_state_get()
  dt-bindings: remoteproc: qcom: pas: Fix indentation warnings
  remoteproc: imx-rproc: Fix IMX_REMOTEPROC configuration
  remoteproc: imx_rproc: support i.MX8MN/P
  remoteproc: imx_rproc: support i.MX7ULP
  remoteproc: imx_rproc: make clk optional
  remoteproc: imx_rproc: initial support for mutilple start/stop method
  ...

In error cases the dentry may be NULL.

Before 20798dfe, the encoder also checked dentry and
d_really_is_positive(dentry), but that looks like overkill to me--zero
status should be enough to guarantee a positive dentry.

This isn't the first time we've seen an error-case NULL dereference
hidden in the initialization of a local variable in an xdr encoder.  But
I went back through the other recent rewrites and didn't spot any
similar bugs.
Reported-by: JianHong Yin <jiyin@redhat.com>
Reviewed-by: Chuck Lever III <chuck.lever@oracle.com>
Fixes: 20798dfe ("NFSD: Update the NFSv3 GETACL result encoder...")
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

The double copy of the string is a mistake, plus __assign_str()
uses strlen(), which is wrong to do on a string that isn't
guaranteed to be NUL-terminated.

Fixes: 6019ce07 ("NFSD: Add a tracepoint to record directory entry encoding")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

The pointer 'this' is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

When flushing out the unstable file writes as part of a COMMIT call, try
to perform most of of the data writes and waits outside the semaphore.

This means that if the client is sending the COMMIT as part of a memory
reclaim operation, then it can continue performing I/O, with contention
for the lock occurring only once the data sync is finished.

Fixes: 5011af4c ("nfsd: Fix stable writes")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>