In "consolidate the capability checks in sget_{fc,userns}())" the
wrong argument had been passed to mount_capable() by sget_fc().
That mistake had been further obscured later, when switching
mount_capable() to fs_context has moved the calculation of
bogus argument from sget_fc() to mount_capable() itself.  It
should've been fc->user_ns all along.
Screwed-up-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Christian Brauner <christian@brauner.io>
Tested-by: Christian Brauner <christian@brauner.io>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

	We need to drop everything we remove from the tree, whether
mnt_has_parent() is true or not.  Usually the bug manifests as a slow
memory leak (leaked struct mount for initramfs); it becomes much more
visible in mount_subtree() users, such as btrfs.  There we leak
a struct mount for btrfs superblock being mounted, which prevents
fs shutdown on subsequent umount.

Fixes: 56cbb429 ("switch the remnants of releasing the mountpoint away from fs_pin")
Reported-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Pull dcache and mountpoint updates from Al Viro:
 "Saner handling of refcounts to mountpoints.

  Transfer the counting reference from struct mount ->mnt_mountpoint
  over to struct mountpoint ->m_dentry. That allows us to get rid of the
  convoluted games with ordering of mount shutdowns.

  The cost is in teaching shrink_dcache_{parent,for_umount} to cope with
  mixed-filesystem shrink lists, which we'll also need for the Slab
  Movable Objects patchset"

* 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  switch the remnants of releasing the mountpoint away from fs_pin
  get rid of detach_mnt()
  make struct mountpoint bear the dentry reference to mountpoint, not struct mount
  Teach shrink_dcache_parent() to cope with mixed-filesystem shrink lists
  fs/namespace.c: shift put_mountpoint() to callers of unhash_mnt()
  __detach_mounts(): lookup_mountpoint() can't return ERR_PTR() anymore
  nfs: dget_parent() never returns NULL
  ceph: don't open-code the check for dead lockref

Pull ARM SoC defconfig updates from Olof Johansson:
 "We keep this in a separate branch to avoid cross-branch conflicts, but
  most of the material here is fairly boring -- some new drivers turned
  on for hardware since they were merged, and some refreshed files due
  to time having moved a lot of entries around"

* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: configs: multi_v5: Remove duplicate ASPEED options
  arm64: defconfig: Enable CONFIG_KEYBOARD_SNVS_PWRKEY as module
  ARM: imx_v6_v7_defconfig: Enable CONFIG_ARM_IMX_CPUFREQ_DT
  defconfig: arm64: enable i.MX8 SCU octop driver
  arm64: defconfig: Add i.MX SCU SoC info driver
  arm64: defconfig: Enable CONFIG_QORIQ_THERMAL
  ARM: imx_v6_v7_defconfig: Select CONFIG_NVMEM_SNVS_LPGPR
  arm64: defconfig: ARM_IMX_CPUFREQ_DT=m
  ARM: imx_v6_v7_defconfig: Add TPM PWM support by default
  ARM: imx_v6_v7_defconfig: Enable the OV2680 camera driver
  ARM: imx_v6_v7_defconfig: Enable CONFIG_THERMAL_STATISTICS
  arm64: defconfig: NVMEM_IMX_OCOTP=y for imx8m
  ARM: multi_v7_defconfig: enable STMFX pinctrl support
  arm64 defconfig: enable LVM support
  ARM: configs: multi_v5: Add more ASPEED devices
  arm64: defconfig: Add Tegra194 PCIe driver
  ARM: configs: aspeed: Add new drivers
  ARM: exynos_defconfig: Enable Panfrost and Lima drivers
  ARM: multi_v7_defconfig: Enable Panfrost and Lima drivers
  arm64 defconfig: enable Mellanox cards
  ...

Pull ARM Devicetree updates from Olof Johansson:
 "We continue to see a lot of new material. I've highlighted some of it
  below, but there's been more beyond that as well.

  One of the sweeping changes is that many boards have seen their ARM
  Mali GPU devices added to device trees, since the DRM drivers have now
  been merged.

  So, with the caveat that I have surely missed several great
  contributions, here's a collection of the material this time around:

  New SoCs:

   - Mediatek mt8183 (4x Cortex-A73 + 4x Cortex-A53)

   - TI J721E (2x Cortex-A72 + 3x Cortex-R5F + 3 DSPs + MMA)

   - Amlogic G12B (4x Cortex-A73 + 2x Cortex-A53)

  New Boards / platforms:

   - Aspeed BMC support for a number of new server platforms

   - Kontron SMARC SoM (several i.MX6 versions)

   - Novtech's Meerkat96 (i.MX7)

   - ST Micro Avenger96 board

   - Hardkernel ODROID-N2 (Amlogic G12B)

   - Purism Librem5 devkit (i.MX8MQ)

   - Google Cheza (Qualcomm SDM845)

   - Qualcomm Dragonboard 845c (Qualcomm SDM845)

   - Hugsun X99 TV Box (Rockchip RK3399)

   - Khadas Edge/Edge-V/Captain (Rockchip RK3399)

  Updated / expanded boards and platforms:

   - Renesas r7s9210 has a lot of new peripherals added

   - Fixes and polish for Rockchip-based Chromebooks

   - Amlogic G12A has a lot of peripherals added

   - Nvidia Jetson Nano sees various fixes and improvements, and is now
     at feature parity with TX1"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (586 commits)
  ARM: dts: gemini: Set DIR-685 SPI CS as active low
  ARM: dts: exynos: Adjust buck[78] regulators to supported values on Arndale Octa
  ARM: dts: exynos: Adjust buck[78] regulators to supported values on Odroid XU3 family
  ARM: dts: exynos: Move Mali400 GPU node to "/soc"
  ARM: dts: exynos: Fix imprecise abort on Mali GPU probe on Exynos4210
  arm64: dts: qcom: qcs404: Add missing space for cooling-cells property
  arm64: dts: rockchip: Fix USB3 Type-C on rk3399-sapphire
  arm64: dts: rockchip: Update DWC3 modules on RK3399 SoCs
  arm64: dts: rockchip: enable rk3328 watchdog clock
  ARM: dts: rockchip: add display nodes for rk322x
  ARM: dts: rockchip: fix vop iommu-cells on rk322x
  arm64: dts: rockchip: Add support for Hugsun X99 TV Box
  arm64: dts: rockchip: Define values for the IPA governor for rock960
  arm64: dts: rockchip: Fix multiple thermal zones conflict in rk3399.dtsi
  arm64: dts: rockchip: add core dtsi file for RK3399Pro SoCs
  arm64: dts: rockchip: improve rk3328-roc-cc rgmii performance.
  Revert "ARM: dts: rockchip: set PWM delay backlight settings for Minnie"
  ARM: dts: rockchip: Configure BT_DEV_WAKE in on rk3288-veyron
  arm64: dts: qcom: sdm845-cheza: add initial cheza dt
  ARM: dts: msm8974-FP2: Add vibration motor
  ...

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

   - A driver for SCU (system control) on NXP i.MX8QXP

   - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)

   - Qualcomm PM support for MSM8998

   - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)

   - Reset controller support for Bitmain BM1880

   - TI SCI (System Control Interface) support for CPU control on AM654
     processors

   - More TI sysc refactoring and rework"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (84 commits)
  reset: remove redundant null check on pointer dev
  soc: rockchip: work around clang warning
  dt-bindings: reset: imx7: Fix the spelling of 'indices'
  soc: imx: Add i.MX8MN SoC driver support
  soc: aspeed: lpc-ctrl: Fix probe error handling
  soc: qcom: geni: Add support for ACPI
  firmware: ti_sci: Fix gcc unused-but-set-variable warning
  firmware: ti_sci: Use the correct style for SPDX License Identifier
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  firmware/psci: psci_checker: Park kthreads before stopping them
  memory: move jedec_ddr.h from include/memory to drivers/memory/
  memory: move jedec_ddr_data.c from lib/ to drivers/memory/
  MAINTAINERS: Remove myself as qcom maintainer
  soc: aspeed: lpc-ctrl: make parameter optional
  soc: qcom: apr: Don't use reg for domain id
  soc: qcom: fix QCOM_AOSS_QMP dependency and build errors
  memory: tegra: Fix -Wunused-const-variable
  firmware: tegra: Early resume BPMP
  soc/tegra: Select pinctrl for Tegra194
  ...

Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes. Main theme this merge window:

   - The Netx platform (Netx 100/500) platform is removed by Linus
     Walleij-- the SoC doesn't have active maintainers with hardware,
     and in discussions with the vendor the agreement was that it's OK
     to remove.

   - Russell King has a series of patches that cleans up and refactors
     SA1101 and RiscPC support"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: stm32: use "depends on" instead of "if" after prompt
  ARM: sa1100: convert to common clock framework
  ARM: exynos: Cleanup cppcheck shifting warning
  ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view
  ARM: exynos: Only build MCPM support if used
  arm: add missing include platform-data/atmel.h
  ARM: davinci: Use GPIO lookup table for DA850 LEDs
  ARM: OMAP2: drop explicit assembler architecture
  ARM: use arch_extension directive instead of arch argument
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB
  ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  MAINTAINERS: mvebu: Add git entry
  soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh
  ARM: OMAP2+: Make some variables static
  ...

Pull drm fixes from Daniel Vetter:
 "Dave is back in shape, but now family got it so I'm doing the pull.
  Two things worthy of note:

   - nouveau feature pull was way too late, Dave&me decided to not take
     that, so Ben spun up a pull with just the fixes.

   - after some chatting with the arm display maintainers we decided to
     change a bit how that's maintained, for more oversight/review and
     cross vendor collab.

  More details below:

  nouveau:
   - bugfixes
   - TU116 enabling (minor iteration) :w

  amdgpu:
   - large pile of fixes for new hw support this release (navi, vega20)
   - audio hotplug fix
   - bunch of corner cases and small fixes all over for amdgpu/kfd

  komeda:
   - back out some new properties (from this merge window) that needs
     more pondering.

  bochs:
   - fb pitch setup

  core:
   - a new panel quirk
   - misc fixes"

* tag 'drm-next-2019-07-19' of git://anongit.freedesktop.org/drm/drm: (73 commits)
  drm/nouveau/secboot/gp102-: remove WAR for SEC2 RTOS start bug
  drm/nouveau/flcn/gp102-: improve implementation of bind_context() on SEC2/GSP
  drm/nouveau: fix memory leak in nouveau_conn_reset()
  drm/nouveau/dmem: missing mutex_lock in error path
  drm/nouveau/hwmon: return EINVAL if the GPU is powered down for sensors reads
  drm/nouveau: fix bogus GPL-2 license header
  drm/nouveau: fix bogus GPL-2 license header
  drm/nouveau/i2c: Enable i2c pads & busses during preinit
  drm/nouveau/disp/tu102-: wire up scdc parameter setter
  drm/nouveau/core: recognise TU116 chipset
  drm/nouveau/kms: disallow dual-link harder if hdmi connection detected
  drm/nouveau/disp/nv50-: fix center/aspect-corrected scaling
  drm/nouveau/disp/nv50-: force scaler for any non-default LVDS/eDP modes
  drm/nouveau/mcp89/mmu: Use mcp77_mmu_new instead of g84_mmu_new on MCP89.
  drm/amd/display: init res_pool dccg_ref, dchub_ref with xtalin_freq
  drm/amdgpu/pm: remove check for pp funcs in freq sysfs handlers
  drm/amd/display: Force uclk to max for every state
  drm/amdkfd: Remove GWS from process during uninit
  drm/amd/amdgpu: Fix offset for vmid selection in debugfs interface
  drm/amd/powerplay: update vega20 driver if to fit latest SMU firmware
  ...

Pull crypto fixes from Herbert Xu:

 - Fix missed wake-up race in padata

 - Use crypto_memneq in ccp

 - Fix version check in ccp

 - Fix fuzz test failure in ccp

 - Fix potential double free in crypto4xx

 - Fix compile warning in stm32

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  padata: use smp_mb in padata_reorder to avoid orphaned padata jobs
  crypto: ccp - Fix SEV_VERSION_GREATER_OR_EQUAL
  crypto: ccp/gcm - use const time tag comparison.
  crypto: ccp - memset structure fields to zero before reuse
  crypto: crypto4xx - fix a potential double free in ppc4xx_trng_probe
  crypto: stm32/hash - Fix incorrect printk modifier for size_t

This fell into disrepair a while ago, and the majority of hits to the
snapshots were from bots, so it's more trouble to keep running than it's worth.
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull tracing fix from Steven Rostedt:
 "Eiichi Tsukata found a small bug from the fixup of the stack code

  Removing ULONG_MAX as the marker for the user stack trace end, made
  the tracing code not know where the end is. The end is now marked with
  a zero (NULL) pointer. Eiichi fixed this in the tracing code"

* tag 'trace-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix user stack trace "??" output

Pull arch/csky pupdates from Guo Ren:
 "This round of csky subsystem gives two features (ASID algorithm
  update, Perf pmu record support) and some fixups.

  ASID updates:
   - Revert mmu ASID mechanism
   - Add new asid lib code from arm
   - Use generic asid algorithm to implement switch_mm
   - Improve tlb operation with help of asid

  Perf pmu record support:
   - Init pmu as a device
   - Add count-width property for csky pmu
   - Add pmu interrupt support
   - Fix perf record in kernel/user space
   - dt-bindings: Add csky PMU bindings

  Fixes:
   - Fixup no panic in kernel for some traps
   - Fixup some error count in 810 & 860.
   - Fixup abiv1 memset error"

* tag 'csky-for-linus-5.3-rc1' of git://github.com/c-sky/csky-linux:
  csky: Fixup abiv1 memset error
  csky: Improve tlb operation with help of asid
  csky: Use generic asid algorithm to implement switch_mm
  csky: Add new asid lib code from arm
  csky: Revert mmu ASID mechanism
  dt-bindings: csky: Add csky PMU bindings
  dt-bindings: interrupt-controller: Update csky mpintc
  csky: Fixup some error count in 810 & 860.
  csky: Fix perf record in kernel/user space
  csky: Add pmu interrupt support
  csky: Add count-width property for csky pmu
  csky: Init pmu as a device
  csky: Fixup no panic in kernel for some traps
  csky: Select intc & timer drivers

Pull xen updates from Juergen Gross:
 "Fixes and features:

   - A series to introduce a common command line parameter for disabling
     paravirtual extensions when running as a guest in virtualized
     environment

   - A fix for int3 handling in Xen pv guests

   - Removal of the Xen-specific tmem driver as support of tmem in Xen
     has been dropped (and it was experimental only)

   - A security fix for running as Xen dom0 (XSA-300)

   - A fix for IRQ handling when offlining cpus in Xen guests

   - Some small cleanups"

* tag 'for-linus-5.3a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: let alloc_xenballooned_pages() fail if not enough memory free
  xen/pv: Fix a boot up hang revealed by int3 self test
  x86/xen: Add "nopv" support for HVM guest
  x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable
  xen: Map "xen_nopv" parameter to "nopv" and mark it obsolete
  x86: Add "nopv" parameter to disable PV extensions
  x86/xen: Mark xen_hvm_need_lapic() and xen_x2apic_para_available() as __init
  xen: remove tmem driver
  Revert "x86/paravirt: Set up the virt_spin_lock_key after static keys get initialized"
  xen/events: fix binding user event channels to cpus

Pull iomap split/cleanup from Darrick Wong:
 "As promised, here's the second part of the iomap merge for 5.3, in
  which we break up iomap.c into smaller files grouped by functional
  area so that it'll be easier in the long run to maintain cohesiveness
  of code units and to review incoming patches. There are no functional
  changes and fs/iomap.c split cleanly.

  Summary:

   - Regroup the fs/iomap.c code by major functional area so that we can
     start development for 5.4 from a more stable base"

* tag 'iomap-5.3-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  iomap: move internal declarations into fs/iomap/
  iomap: move the main iteration code into a separate file
  iomap: move the buffered IO code into a separate file
  iomap: move the direct IO code into a separate file
  iomap: move the SEEK_HOLE code into a separate file
  iomap: move the file mapping reporting code into a separate file
  iomap: move the swapfile code into a separate file
  iomap: start moving code to fs/iomap/

Pull misc vfs updates from Al Viro:
 "Assorted stuff"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  perf_event_get(): don't bother with fget_raw()
  vfs: update d_make_root() description

Pull adfs updates from Al Viro:
 "More ADFS patches from Russell King"

* 'work.adfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs/adfs: add time stamp and file type helpers
  fs/adfs: super: limit idlen according to directory type
  fs/adfs: super: fix use-after-free bug
  fs/adfs: super: safely update options on remount
  fs/adfs: super: correct superblock flags
  fs/adfs: clean up indirect disc addresses and fragment IDs
  fs/adfs: clean up error message printing
  fs/adfs: use %pV for error messages
  fs/adfs: use format_version from disc_record
  fs/adfs: add helper to get filesystem size
  fs/adfs: add helper to get discrecord from map
  fs/adfs: correct disc record structure

Pull vfs mount updates from Al Viro:
 "The first part of mount updates.

  Convert filesystems to use the new mount API"

* 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
  mnt_init(): call shmem_init() unconditionally
  constify ksys_mount() string arguments
  don't bother with registering rootfs
  init_rootfs(): don't bother with init_ramfs_fs()
  vfs: Convert smackfs to use the new mount API
  vfs: Convert selinuxfs to use the new mount API
  vfs: Convert securityfs to use the new mount API
  vfs: Convert apparmorfs to use the new mount API
  vfs: Convert openpromfs to use the new mount API
  vfs: Convert xenfs to use the new mount API
  vfs: Convert gadgetfs to use the new mount API
  vfs: Convert oprofilefs to use the new mount API
  vfs: Convert ibmasmfs to use the new mount API
  vfs: Convert qib_fs/ipathfs to use the new mount API
  vfs: Convert efivarfs to use the new mount API
  vfs: Convert configfs to use the new mount API
  vfs: Convert binfmt_misc to use the new mount API
  convenience helper: get_tree_single()
  convenience helper get_tree_nodev()
  vfs: Kill sget_userns()
  ...

Pull networking fixes from David Miller:

 1) Fix AF_XDP cq entry leak, from Ilya Maximets.

 2) Fix handling of PHY power-down on RTL8411B, from Heiner Kallweit.

 3) Add some new PCI IDs to iwlwifi, from Ihab Zhaika.

 4) Fix handling of neigh timers wrt. entries added by userspace, from
    Lorenzo Bianconi.

 5) Various cases of missing of_node_put(), from Nishka Dasgupta.

 6) The new NET_ACT_CT needs to depend upon NF_NAT, from Yue Haibing.

 7) Various RDS layer fixes, from Gerd Rausch.

 8) Fix some more fallout from TCQ_F_CAN_BYPASS generalization, from
    Cong Wang.

 9) Fix FIB source validation checks over loopback, also from Cong Wang.

10) Use promisc for unsupported number of filters, from Justin Chen.

11) Missing sibling route unlink on failure in ipv6, from Ido Schimmel.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (90 commits)
  tcp: fix tcp_set_congestion_control() use from bpf hook
  ag71xx: fix return value check in ag71xx_probe()
  ag71xx: fix error return code in ag71xx_probe()
  usb: qmi_wwan: add D-Link DWM-222 A2 device ID
  bnxt_en: Fix VNIC accounting when enabling aRFS on 57500 chips.
  net: dsa: sja1105: Fix missing unlock on error in sk_buff()
  gve: replace kfree with kvfree
  selftests/bpf: fix test_xdp_noinline on s390
  selftests/bpf: fix "valid read map access into a read-only array 1" on s390
  net/mlx5: Replace kfree with kvfree
  MAINTAINERS: update netsec driver
  ipv6: Unlink sibling route in case of failure
  liquidio: Replace vmalloc + memset with vzalloc
  udp: Fix typo in net/ipv4/udp.c
  net: bcmgenet: use promisc for unsupported filters
  ipv6: rt6_check should return NULL if 'from' is NULL
  tipc: initialize 'validated' field of received packets
  selftests: add a test case for rp_filter
  fib: relax source validation check for loopback packets
  mlxsw: spectrum: Do not process learned records with a dummy FID
  ...

Merge yet more updates from Andrew Morton:
 "The rest of MM and a kernel-wide procfs cleanup.

  Summary of the more significant patches:

   - Patch series "mm/memory_hotplug: Factor out memory block
     devicehandling", v3. David Hildenbrand.

     Some spring-cleaning of the memory hotplug code, notably in
     drivers/base/memory.c

   - "mm: thp: fix false negative of shmem vma's THP eligibility". Yang
     Shi.

     Fix /proc/pid/smaps output for THP pages used in shmem.

   - "resource: fix locking in find_next_iomem_res()" + 1. Nadav Amit.

     Bugfix and speedup for kernel/resource.c

   - Patch series "mm: Further memory block device cleanups", David
     Hildenbrand.

     More spring-cleaning of the memory hotplug code.

   - Patch series "mm: Sub-section memory hotplug support". Dan
     Williams.

     Generalise the memory hotplug code so that pmem can use it more
     completely. Then remove the hacks from the libnvdimm code which
     were there to work around the memory-hotplug code's constraints.

   - "proc/sysctl: add shared variables for range check", Matteo Croce.

     We have about 250 instances of

          int zero;
          ...
                  .extra1 = &zero,

     in the tree. This is a tree-wide sweep to make all those private
     "zero"s and "one"s use global variables.

     Alas, it isn't practical to make those two global integers const"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (38 commits)
  proc/sysctl: add shared variables for range check
  mm: migrate: remove unused mode argument
  mm/sparsemem: cleanup 'section number' data types
  libnvdimm/pfn: stop padding pmem namespaces to section alignment
  libnvdimm/pfn: fix fsdax-mode namespace info-block zero-fields
  mm/devm_memremap_pages: enable sub-section remap
  mm: document ZONE_DEVICE memory-model implications
  mm/sparsemem: support sub-section hotplug
  mm/sparsemem: prepare for sub-section ranges
  mm: kill is_dev_zone() helper
  mm/hotplug: kill is_dev_zone() usage in __remove_pages()
  mm/sparsemem: convert kmalloc_section_memmap() to populate_section_memmap()
  mm/hotplug: prepare shrink_{zone, pgdat}_span for sub-section removal
  mm/sparsemem: add helpers track active portions of a section at boot
  mm/sparsemem: introduce a SECTION_IS_EARLY flag
  mm/sparsemem: introduce struct mem_section_usage
  drivers/base/memory.c: get rid of find_memory_block_hinted()
  mm/memory_hotplug: move and simplify walk_memory_blocks()
  mm/memory_hotplug: rename walk_memory_range() and pass start+size instead of pfns
  mm: make register_mem_sect_under_node() static
  ...

Commit c5c27a0a ("x86/stacktrace: Remove the pointless ULONG_MAX
marker") removes ULONG_MAX marker from user stack trace entries but
trace_user_stack_print() still uses the marker and it outputs unnecessary
"??".

For example:

            less-1911  [001] d..2    34.758944: <user stack trace>
   =>  <00007f16f2295910>
   => ??
   => ??
   => ??
   => ??
   => ??
   => ??
   => ??

The user stack trace code zeroes the storage before saving the stack, so if
the trace is shorter than the maximum number of entries it can terminate
the print loop if a zero entry is detected.

Link: http://lkml.kernel.org/r/20190630085438.25545-1-devel@etsukata.com

Cc: stable@vger.kernel.org
Fixes: 4285f2fc ("tracing: Remove the ULONG_MAX stack trace hackery")
Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

nouveau fixes and TU116 enablement.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv5hZ3B4S9cVTPd2-Ug7dMSasLPJrWMyoDo4MOg8cbXWkA@mail.gmail.com

drm-next-5.3-2019-07-18:

amdgpu:
- Navi DC fix for secondary adapters
- Fix Navi flickering with high res panels
- Navi SMU fixes
- Vega20 SMU fixes
- Fixes for audio hotplug on HG systems
- Fix for potential integer overflows on large buffer
  migrations
- debugfs fixes for umr
- Various other small fixes

amdkfd:
- Apply noretry setting consistently
- Fix hang in eviction
- Properly clean up GWS on uninit

UAPI:
- clarify a comment on ctx priority
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190718211525.3374-1-alexander.deucher@amd.com

Appears to be fixed by "flcn/gp102-: improve implementation of
bind_context() on SEC2/GSP".

Tested on GP10[24678] and GV100.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Fixes various issues encountered while attempting to initialise ACR.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

In nouveau_conn_reset(), if connector->state is true,
__drm_atomic_helper_connector_destroy_state() will be called,
but the memory pointed by asyc isn't freed. Memory leak happens
in the following function __drm_atomic_helper_connector_reset(),
where newly allocated asyc->state will be assigned to connector->state.

So using nouveau_conn_atomic_destroy_state() instead of
__drm_atomic_helper_connector_destroy_state to free the "old" asyc.

Here the is the log showing memory leak.

unreferenced object 0xffff8c5480483c80 (size 192):
  comm "kworker/0:2", pid 188, jiffies 4294695279 (age 53.179s)
  hex dump (first 32 bytes):
    00 f0 ba 7b 54 8c ff ff 00 00 00 00 00 00 00 00  ...{T...........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000005005c0d0>] kmem_cache_alloc_trace+0x195/0x2c0
    [<00000000a122baed>] nouveau_conn_reset+0x25/0xc0 [nouveau]
    [<000000004fd189a2>] nouveau_connector_create+0x3a7/0x610 [nouveau]
    [<00000000c73343a8>] nv50_display_create+0x343/0x980 [nouveau]
    [<000000002e2b03c3>] nouveau_display_create+0x51f/0x660 [nouveau]
    [<00000000c924699b>] nouveau_drm_device_init+0x182/0x7f0 [nouveau]
    [<00000000cc029436>] nouveau_drm_probe+0x20c/0x2c0 [nouveau]
    [<000000007e961c3e>] local_pci_probe+0x47/0xa0
    [<00000000da14d569>] work_for_cpu_fn+0x1a/0x30
    [<0000000028da4805>] process_one_work+0x27c/0x660
    [<000000001d415b04>] worker_thread+0x22b/0x3f0
    [<0000000003b69f1f>] kthread+0x12f/0x150
    [<00000000c94c29b7>] ret_from_fork+0x3a/0x50
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

In nouveau_dmem_pages_alloc(), the drm->dmem->mutex is unlocked before
calling nouveau_dmem_chunk_alloc() as shown when CONFIG_PROVE_LOCKING
is enabled:

[ 1294.871933] =====================================
[ 1294.876656] WARNING: bad unlock balance detected!
[ 1294.881375] 5.2.0-rc3+ #5 Not tainted
[ 1294.885048] -------------------------------------
[ 1294.889773] test-malloc-vra/6299 is trying to release lock (&drm->dmem->mutex) at:
[ 1294.897482] [<ffffffffa01a220f>] nouveau_dmem_migrate_alloc_and_copy+0x79f/0xbf0 [nouveau]
[ 1294.905782] but there are no more locks to release!
[ 1294.910690]
[ 1294.910690] other info that might help us debug this:
[ 1294.917249] 1 lock held by test-malloc-vra/6299:
[ 1294.921881]  #0: 0000000016e10454 (&mm->mmap_sem#2){++++}, at: nouveau_svmm_bind+0x142/0x210 [nouveau]
[ 1294.931313]
[ 1294.931313] stack backtrace:
[ 1294.935702] CPU: 4 PID: 6299 Comm: test-malloc-vra Not tainted 5.2.0-rc3+ #5
[ 1294.942786] Hardware name: ASUS X299-A/PRIME X299-A, BIOS 1401 05/21/2018
[ 1294.949590] Call Trace:
[ 1294.952059]  dump_stack+0x7c/0xc0
[ 1294.955469]  ? nouveau_dmem_migrate_alloc_and_copy+0x79f/0xbf0 [nouveau]
[ 1294.962213]  print_unlock_imbalance_bug.cold.52+0xca/0xcf
[ 1294.967641]  lock_release+0x306/0x380
[ 1294.971383]  ? nouveau_dmem_migrate_alloc_and_copy+0x79f/0xbf0 [nouveau]
[ 1294.978089]  ? lock_downgrade+0x2d0/0x2d0
[ 1294.982121]  ? find_held_lock+0xac/0xd0
[ 1294.985979]  __mutex_unlock_slowpath+0x8f/0x3f0
[ 1294.990540]  ? wait_for_completion+0x230/0x230
[ 1294.995002]  ? rwlock_bug.part.2+0x60/0x60
[ 1294.999197]  nouveau_dmem_migrate_alloc_and_copy+0x79f/0xbf0 [nouveau]
[ 1295.005751]  ? page_mapping+0x98/0x110
[ 1295.009511]  migrate_vma+0xa74/0x1090
[ 1295.013186]  ? move_to_new_page+0x480/0x480
[ 1295.017400]  ? __kmalloc+0x153/0x300
[ 1295.021052]  ? nouveau_dmem_migrate_vma+0xd8/0x1e0 [nouveau]
[ 1295.026796]  nouveau_dmem_migrate_vma+0x157/0x1e0 [nouveau]
[ 1295.032466]  ? nouveau_dmem_init+0x490/0x490 [nouveau]
[ 1295.037612]  ? vmacache_find+0xc2/0x110
[ 1295.041537]  nouveau_svmm_bind+0x1b4/0x210 [nouveau]
[ 1295.046583]  ? nouveau_svm_fault+0x13e0/0x13e0 [nouveau]
[ 1295.051912]  drm_ioctl_kernel+0x14d/0x1a0
[ 1295.055930]  ? drm_setversion+0x330/0x330
[ 1295.059971]  drm_ioctl+0x308/0x530
[ 1295.063384]  ? drm_version+0x150/0x150
[ 1295.067153]  ? find_held_lock+0xac/0xd0
[ 1295.070996]  ? __pm_runtime_resume+0x3f/0xa0
[ 1295.075285]  ? mark_held_locks+0x29/0xa0
[ 1295.079230]  ? _raw_spin_unlock_irqrestore+0x3c/0x50
[ 1295.084232]  ? lockdep_hardirqs_on+0x17d/0x250
[ 1295.088768]  nouveau_drm_ioctl+0x9a/0x100 [nouveau]
[ 1295.093661]  do_vfs_ioctl+0x137/0x9a0
[ 1295.097341]  ? ioctl_preallocate+0x140/0x140
[ 1295.101623]  ? match_held_lock+0x1b/0x230
[ 1295.105646]  ? match_held_lock+0x1b/0x230
[ 1295.109660]  ? find_held_lock+0xac/0xd0
[ 1295.113512]  ? __do_page_fault+0x324/0x630
[ 1295.117617]  ? lock_downgrade+0x2d0/0x2d0
[ 1295.121648]  ? mark_held_locks+0x79/0xa0
[ 1295.125583]  ? handle_mm_fault+0x352/0x430
[ 1295.129687]  ksys_ioctl+0x60/0x90
[ 1295.133020]  ? mark_held_locks+0x29/0xa0
[ 1295.136964]  __x64_sys_ioctl+0x3d/0x50
[ 1295.140726]  do_syscall_64+0x68/0x250
[ 1295.144400]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1295.149465] RIP: 0033:0x7f1a3495809b
[ 1295.153053] Code: 0f 1e fa 48 8b 05 ed bd 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d bd bd 0c 00 f7 d8 64 89 01 48
[ 1295.171850] RSP: 002b:00007ffef7ed1358 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 1295.179451] RAX: ffffffffffffffda RBX: 00007ffef7ed1628 RCX: 00007f1a3495809b
[ 1295.186601] RDX: 00007ffef7ed13b0 RSI: 0000000040406449 RDI: 0000000000000004
[ 1295.193759] RBP: 00007ffef7ed13b0 R08: 0000000000000000 R09: 000000000157e770
[ 1295.200917] R10: 000000000151c010 R11: 0000000000000246 R12: 0000000040406449
[ 1295.208083] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000

Reacquire the lock before continuing to the next page.
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

fixes bogus values userspace gets from hwmon while the GPU is powered down
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Rhys Kidd <rhyskidd@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The bulk SPDX addition made all these files into GPL-2.0 licensed files.
However the remainder of the project is MIT-licensed, these files
were simply missing the boiler plate and got caught up in the global update.

Fixes: 96ac6d43 (treewide: Add SPDX license identifier - Kbuild)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The bulk SPDX addition made all these files into GPL-2.0 licensed files.
However the remainder of the project is MIT-licensed, these files
(primarily header files) were simply missing the boiler plate and got
caught up in the global update.

Fixes: b2441318 (License cleanup: add SPDX GPL-2.0 license identifier to files with no license)
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

It turns out that while disabling i2c bus access from software when the
GPU is suspended was a step in the right direction with:

commit 342406e4 ("drm/nouveau/i2c: Disable i2c bus access after
->fini()")

We also ended up accidentally breaking the vbios init scripts on some
older Tesla GPUs, as apparently said scripts can actually use the i2c
bus. Since these scripts are executed before initializing any
subdevices, we end up failing to acquire access to the i2c bus which has
left a number of cards with their fan controllers uninitialized. Luckily
this doesn't break hardware - it just means the fan gets stuck at 100%.

This also means that we've always been using our i2c busses before
initializing them during the init scripts for older GPUs, we just didn't
notice it until we started preventing them from being used until init.
It's pretty impressive this never caused us any issues before!

So, fix this by initializing our i2c pad and busses during subdev
pre-init. We skip initializing aux busses during pre-init, as those are
guaranteed to only ever be used by nouveau for DP aux transactions.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Tested-by: Marc Meledandri <m.meledandri@gmail.com>
Fixes: 342406e4 ("drm/nouveau/i2c: Disable i2c bus access after ->fini()")
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Regs seem valid here still, and tested on TU116.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Modesetting only, still waiting on ACR/GR firmware from NVIDIA for Turing
graphics/compute bring-up.

Each subsystem was compared with traces, along with various tests to check
that things generally work as they should, and appears compatible enough
with the current TU117 code to enable support.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The fallthrough cases (pre-Fermi) would accidentally allow dual-link pixel
clocks even where they shouldn't be.  This leads to a high resolution HDMI
displays, connected via a DVI->HDMI adapter, to fail on the original NV50.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Previously center scaling would get scaling applied to it (when it was
only supposed to center the image), and aspect-corrected scaling did not
always correctly pick whether to reduce width or height for a particular
combination of inputs/outputs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110660Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Higher layers tend to add a lot of modes not actually in the EDID, such
as the standard DMT modes. Changing this would be extremely intrusive to
everyone, so just force the scaler more often. There are no practical
cases we're aware of where a LVDS/eDP panel has multiple resolutions
exposed, and i915 already does it this way.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110660Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Fix a crash or broken depth testing in all OpenGL applications that use the
depth buffer on MCP89 (GeForce 320M) seen on a MacBook Pro Late 2010.

The bug is tracked in https://bugs.freedesktop.org/show_bug.cgi?id=108500Signed-off-by: Timo Wiren <timo.wiren@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Current memset implementation in abiv1 is wrong and it'll cause unalign
access. Just remove it and use the generic one. This patch will cause
performance degradation and we will improve it with a new design in next
patchset.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>

There are two generations of tlb operation instruction for C-SKY.
First generation is use mcr register and it need software do more
things, second generation is use specific instructions, eg:
 tlbi.va, tlbi.vas, tlbi.alls

We implemented the following functions:

 - flush_tlb_range (a range of entries)
 - flush_tlb_page (one entry)

 Above functions use asid from vma->mm to invalid tlb entries and
 we could use tlbi.vas instruction for newest generation csky cpu.

 - flush_tlb_kernel_range
 - flush_tlb_one

 Above functions don't care asid and it invalid the tlb entries only
 with vpn and we could use tlbi.vaas instruction for newest generat-
 ion csky cpu.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>

Use linux generic asid/vmid algorithm to implement csky
switch_mm function. The algorithm is from arm and it could
work with SMP system. It'll help reduce tlb flush for
switch_mm in task/vm switch.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>

This patch only contains asid help code from arm for next patch to
use.

The asid allocator use five level check to reduce the cost of
switch_mm.

 1. Check if the asid version is the same (it's general)
 2. Check reserved_asid which is set in rollover flush_context()
    and key point is to keep the same bit position with the current
    asid version instead of input version.
 3. Check if the position of bitmap is free then it could be set &
    used directly.
 4. find_next_zero_bit() (a little performance cost)
 5. flush_context  (this is the worst cost with increase current asid
    version)

Check is level by level and cost is also higher with the next level.
The reserved_asid and bitmap mechanism prevent unnecessary
find_next_zero_bit().

The atomic 64 bit asid is also suitable for 32-bit system and it
won't cost a lot in 1th 2th 3th level check.

The operation of set/clear mm_cpumask was removed in arm64 compared to
arm32. It seems no side effect on current arm64 system, but from
software meaning it's wrong. Although csky also needn't it, we add it
back for csky.

The asid_per_ctxt is no use for csky and it reserves the lowest bits for
other use, maybe: trust zone ? Ok, just keep it in csky copy.

Seems it also could be used by other archs and it's worth to move asid
code to generic in future.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Julien Grall <julien.grall@arm.com>