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Merge android-4.19.95 (5da1114) into msm-4.19
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* refs/heads/tmp-5da1114:
  Revert crypto changes from android-4.19.79-95
  Revert "UPSTREAM: PM / wakeup updates"
  Revert "ANDROID: of: property: Enable of_devlink by default"
  Revert "UPSTREAM: dt-bindings: arm: coresight: Add support for coresight-loses-context-with-cpu"
  UPSTREAM: net: usbnet: Fix -Wcast-function-type
  UPSTREAM: USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein
  UPSTREAM: USB: dummy-hcd: increase max number of devices to 32
  ANDROID: tty: serdev: Fix broken serial console input
  ANDROID: update kernel ABI (perf_event changes)
  BACKPORT: perf_event: Add support for LSM and SELinux checks
  UPSTREAM: iommu: Allow io-pgtable to be used outside of drivers/iommu/
  ANDROID: update abi for 4.19.94 release
  ANDROID: update abi due to revert
  Revert "BACKPORT: perf_event: Add support for LSM and SELinux checks"
  UPSTREAM: selinux: sidtab reverse lookup hash table
  UPSTREAM: selinux: avoid atomic_t usage in sidtab
  UPSTREAM: selinux: check sidtab limit before adding a new entry
  UPSTREAM: selinux: fix context string corruption in convert_context()
  UPSTREAM: selinux: overhaul sidtab to fix bug and improve performance
  UPSTREAM: selinux: refactor mls_context_to_sid() and make it stricter
  UPSTREAM: selinux: use separate table for initial SID lookup
  UPSTREAM: selinux: make "selinux_policycap_names[]" const char *
  UPSTREAM: selinux: refactor sidtab conversion
  ANDROID: Update ABI representation
  ANDROID: GKI: clk: Don't disable unused clocks with sync state support
  ANDROID: GKI: clk: Add support for clock providers with sync state
  ANDROID: GKI: driver core: Add dev_has_sync_state()
  ANDROID: update kernel ABI representation
  BACKPORT: perf_event: Add support for LSM and SELinux checks
  ANDROID: update ABI representation
  UPSTREAM: exit: panic before exit_mm() on global init exit
  ANDROID: serdev: Fix platform device support
  ANDROID: Kconfig.gki: Add Hidden SPRD DRM configs
  ANDROID: gki_defconfig: Disable TRANSPARENT_HUGEPAGE
  ANDROID: gki_defconfig: Enable CONFIG_GNSS_CMDLINE_SERIAL
  ANDROID: gnss: Add command line test driver
  ANDROID: serdev: add platform device support
  ANDROID: gki_defconfig: enable ARM64_SW_TTBR0_PAN
  ANDROID: gki_defconfig: Set BINFMT_MISC as =m
  UPSTREAM: binder: fix incorrect calculation for num_valid
  ABI: Update ABI after f2fs merge
  ANDROID: add initial ABI whitelist for android-4.19
  ANDROID: staging: android: ion: Fix build when CONFIG_ION_SYSTEM_HEAP=n
  ANDROID: staging: android: ion: Expose total heap and pool sizes via sysfs
  ANDROID: Update ABI representation due to vmstat counter changes
  UPSTREAM: include/linux/slab.h: fix sparse warning in kmalloc_type()
  UPSTREAM: mm, slab: shorten kmalloc cache names for large sizes
  UPSTREAM: mm, proc: add KReclaimable to /proc/meminfo
  UPSTREAM: mm: rename and change semantics of nr_indirectly_reclaimable_bytes
  UPSTREAM: dcache: allocate external names from reclaimable kmalloc caches
  UPSTREAM: mm, slab/slub: introduce kmalloc-reclaimable caches
  UPSTREAM: mm, slab: combine kmalloc_caches and kmalloc_dma_caches
  ANDROID: abi update for 4.19.89
  ANDROID: update abi_gki_aarch64.xml for LTO, CFI, and SCS
  ANDROID: gki_defconfig: enable LTO, CFI, and SCS
  ANDROID: update abi_gki_aarch64.xml for CONFIG_GNSS
  ANDROID: cuttlefish_defconfig: Enable CONFIG_GNSS
  UPSTREAM: arm64: Validate tagged addresses in access_ok() called from kernel threads
  ANDROID: mm: Throttle rss_stat tracepoint
  UPSTREAM: mm: slub: really fix slab walking for init_on_free
  ANDROID: update abi_gki_aarch64.xml for nf change
  ANDROID: kbuild: limit LTO inlining
  ANDROID: kbuild: merge module sections with LTO
  ANDROID: netfilter: nf_nat: remove static from nf_nat_ipv4_fn
  UPSTREAM: drm/client: remove the exporting of drm_client_close
  ANDROID: f2fs: fix possible merge of unencrypted with encrypted I/O
  UPSTREAM: binder: Add binder_proc logging to binderfs
  UPSTREAM: binder: Make transaction_log available in binderfs
  UPSTREAM: binder: Add stats, state and transactions files
  UPSTREAM: binder: add a mount option to show global stats
  UPSTREAM: binder: Validate the default binderfs device names.
  UPSTREAM: binder: Add default binder devices through binderfs when configured
  UPSTREAM: binder: fix CONFIG_ANDROID_BINDER_DEVICES
  UPSTREAM: android: binder: use kstrdup instead of open-coding it
  UPSTREAM: binderfs: remove separate device_initcall()
  UPSTREAM: binderfs: respect limit on binder control creation
  UPSTREAM: binderfs: switch from d_add() to d_instantiate()
  UPSTREAM: binderfs: drop lock in binderfs_binder_ctl_create
  UPSTREAM: binderfs: kill_litter_super() before cleanup
  UPSTREAM: binderfs: rework binderfs_binder_device_create()
  UPSTREAM: binderfs: rework binderfs_fill_super()
  UPSTREAM: binderfs: prevent renaming the control dentry
  UPSTREAM: binderfs: remove outdated comment
  UPSTREAM: binderfs: fix error return code in binderfs_fill_super()
  UPSTREAM: binderfs: handle !CONFIG_IPC_NS builds
  UPSTREAM: binderfs: reserve devices for initial mount
  UPSTREAM: binderfs: rename header to binderfs.h
  UPSTREAM: binderfs: implement "max" mount option
  UPSTREAM: binderfs: make each binderfs mount a new instance
  UPSTREAM: binderfs: remove wrong kern_mount() call
  UPSTREAM: binder: implement binderfs
  UPSTREAM: binder: remove BINDER_DEBUG_ENTRY()
  ANDROID: Don't base allmodconfig on gki_defconfig
  ANDROID: Disable UNWINDER_ORC for allmodconfig
  ANDROID: update abi_gki_aarch64.xml for 4.19.87
  BACKPORT: ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
  ANDROID: update abi_gki_aarch64.xml
  ANDROID: gki_defconfig: =m's applied for virtio configs in arm64
  UPSTREAM: of: property: Add device link support for interrupt-parent, dmas and -gpio(s)
  UPSTREAM: of: property: Add device link support for "iommu-map"
  UPSTREAM: of: property: Fix the semantics of of_is_ancestor_of()
  UPSTREAM: i2c: of: Populate fwnode in of_i2c_get_board_info()
  UPSTREAM: driver core: Clarify documentation for fwnode_operations.add_links()
  UPSTREAM: dt-bindings: arm: coresight: Add support for coresight-loses-context-with-cpu
  BACKPORT: coresight: etm4x: Save/restore state across CPU low power states
  ANDROID: Update ABI representation
  ANDROID: gki_defconfig: IIO=y
  f2fs: stop GC when the victim becomes fully valid
  f2fs: expose main_blkaddr in sysfs
  f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()
  f2fs: Fix deadlock in f2fs_gc() context during atomic files handling
  f2fs: show f2fs instance in printk_ratelimited
  f2fs: fix potential overflow
  f2fs: fix to update dir's i_pino during cross_rename
  f2fs: support aligned pinned file
  f2fs: avoid kernel panic on corruption test
  f2fs: fix wrong description in document
  f2fs: cache global IPU bio
  f2fs: fix to avoid memory leakage in f2fs_listxattr
  f2fs: check total_segments from devices in raw_super
  f2fs: update multi-dev metadata in resize_fs
  f2fs: mark recovery flag correctly in read_raw_super_block()
  f2fs: fix to update time in lazytime mode
  vfs: don't allow writes to swap files
  mm: set S_SWAPFILE on blockdev swap devices
  BACKPORT: ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang
  ANDROID: update abi_gki_aarch64.xml for 4.19.87
  ANDROID: gki_defconfig: FW_CACHE to no
  FROMGIT: firmware_class: make firmware caching configurable
  FROMLIST: arm64: implement Shadow Call Stack
  FROMLIST: arm64: disable SCS for hypervisor code
  BACKPORT: FROMLIST: arm64: vdso: disable Shadow Call Stack
  FROMLIST: arm64: efi: restore x18 if it was corrupted
  FROMLIST: arm64: preserve x18 when CPU is suspended
  FROMLIST: arm64: reserve x18 from general allocation with SCS
  FROMLIST: arm64: disable function graph tracing with SCS
  FROMLIST: scs: add support for stack usage debugging
  FROMLIST: scs: add accounting
  FROMLIST: add support for Clang's Shadow Call Stack (SCS)
  FROMLIST: arm64: kernel: avoid x18 in __cpu_soft_restart
  FROMLIST: arm64: kvm: stop treating register x18 as caller save
  FROMLIST: arm64/lib: copy_page: avoid x18 register in assembler code
  FROMLIST: arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings
  ANDROID: use non-canonical CFI jump tables
  ANDROID: arm64: add __nocfi to __apply_alternatives
  ANDROID: arm64: add __pa_function
  ANDROID: arm64: allow ThinLTO to be selected
  ANDROID: soc/tegra: disable ARCH_TEGRA_210_SOC with LTO
  FROMLIST: arm64: fix alternatives with LLVM's integrated assembler
  ANDROID: irqchip/gic-v3: rename gic_of_init to work around a ThinLTO+CFI bug
  ANDROID: init: ensure initcall ordering with LTO
  Revert "ANDROID: init: ensure initcall ordering with LTO"
  ANDROID: add support for ThinLTO
  ANDROID: clang: update to 10.0.1
  ANDROID: gki_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE
  ANDROID: gki_defconfig: removed CONFIG_PM_WAKELOCKS
  ANDROID: gki_defconfig: enable CONFIG_IKHEADERS as m
  FROMGIT: pinctrl: devicetree: Avoid taking direct reference to device name string
  ANDROID: update abi_gki_aarch64.xml for 4.19.86 update
  ANDROID: Update ABI representation
  ANDROID: gki_defconfig: disable FUNCTION_TRACER
  ANDROID: Update the ABI representation
  ANDROID: update ABI representation
  ANDROID: add unstripped modules to the distribution
  FROMLIST: vsprintf: Inline call to ptr_to_hashval
  UPSTREAM: rss_stat: Add support to detect RSS updates of external mm
  UPSTREAM: mm: emit tracepoint when RSS changes
  FROMGIT: driver core: Allow device link operations inside sync_state()
  ANDROID: uid_sys_stats: avoid double accounting of dying threads
  ANDROID: scsi: ufs-qcom: Enable BROKEN_CRYPTO quirk flag
  ANDROID: scsi: ufs-hisi: Enable BROKEN_CRYPTO quirk flag
  ANDROID: scsi: ufs: Add quirk bit for controllers that don't play well with inline crypto
  ANDROID: scsi: ufs: UFS init should not require inline crypto
  ANDROID: scsi: ufs: UFS crypto variant operations API
  ANDROID: gki_defconfig: enable inline encryption
  BACKPORT: FROMLIST: ext4: add inline encryption support
  BACKPORT: FROMLIST: f2fs: add inline encryption support
  BACKPORT: FROMLIST: fscrypt: add inline encryption support
  BACKPORT: FROMLIST: scsi: ufs: Add inline encryption support to UFS
  BACKPORT: FROMLIST: scsi: ufs: UFS crypto API
  BACKPORT: FROMLIST: scsi: ufs: UFS driver v2.1 spec crypto additions
  BACKPORT: FROMLIST: block: blk-crypto for Inline Encryption
  ANDROID: block: Fix bio_crypt_should_process WARN_ON
  BACKPORT: FROMLIST: block: Add encryption context to struct bio
  BACKPORT: FROMLIST: block: Keyslot Manager for Inline Encryption
  FROMLIST: f2fs: add support for IV_INO_LBLK_64 encryption policies
  FROMLIST: ext4: add support for IV_INO_LBLK_64 encryption policies
  BACKPORT: FROMLIST: fscrypt: add support for IV_INO_LBLK_64 policies
  FROMLIST: fscrypt: zeroize fscrypt_info before freeing
  FROMLIST: fscrypt: remove struct fscrypt_ctx
  BACKPORT: FROMLIST: fscrypt: invoke crypto API for ESSIV handling
  ANDROID: build kernels with llvm-nm and llvm-objcopy
  ANDROID: Fix allmodconfig build with CC=clang
  UPSTREAM: mm/page_poison: expose page_poisoning_enabled to kernel modules
  FROMGIT: of: property: Add device link support for iommus, mboxes and io-channels
  FROMGIT: of: property: Make it easy to add device links from DT properties
  FROMGIT: of: property: Minor style clean up of of_link_to_phandle()
  Revert "ANDROID: of/property: Add device link support for iommus"
  ANDROID: Add allmodconfig build.configs for x86_64 and aarch64
  ANDROID: fix allmodconfig build
  ANDROID: nf: IDLETIMER: Fix possible use before initialization in idletimer_resume
  BACKPORT: coresight: funnel: Support static funnel
  BACKPORT:FROMGIT: coresight: replicator: Fix missing spin_lock_init()
  BACKPORT:FROMGIT: coresight: funnel: Fix missing spin_lock_init()
  BACKPORT:FROMGIT: coresight: Serialize enabling/disabling a link device.
  UPSTREAM: coresight: tmc-etr: Add barrier packets when moving offset forward
  UPSTREAM: coresight: tmc-etr: Decouple buffer sync and barrier packet insertion
  UPSTREAM: coresight: tmc: Make memory width mask computation into a function
  UPSTREAM: coresight: tmc-etr: Fix perf_data check
  UPSTREAM: coresight: tmc-etr: Fix updating buffer in not-snapshot mode.
  UPSTREAM: coresight: tmc-etr: Check if non-secure access is enabled
  UPSTREAM: coresight: tmc-etr: Handle memory errors
  BACKPORT: coresight: etr_buf: Consolidate refcount initialization
  UPSTREAM: coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute
  UPSTREAM: coresight: Use coresight device names for sinks in PMU attribute
  UPSTREAM: coresight: tmc-etr: alloc_perf_buf: Do not call smp_processor_id from preemptible
  UPSTREAM: coresight: tmc-etr: Do not call smp_processor_id() from preemptible
  UPSTREAM: coresight: perf: Don't set the truncated flag in snapshot mode
  UPSTREAM: coresight: tmc-etf: Fix snapshot mode update function
  UPSTREAM: coresight: tmc-etr: Properly set AUX buffer head in snapshot mode
  UPSTREAM: coresight: tmc-etr: Add support for CPU-wide trace scenarios
  UPSTREAM: coresight: tmc-etr: Allocate and free ETR memory buffers for CPU-wide scenarios
  UPSTREAM: coresight: tmc-etr: Introduce the notion of IDR to ETR devices
  UPSTREAM: coresight: tmc-etr: Introduce the notion of reference counting to ETR devices
  UPSTREAM: coresight: tmc-etr: Introduce the notion of process ID to ETR devices
  UPSTREAM: coresight: tmc-etr: Create per-thread buffer allocation function
  UPSTREAM: coresight: tmc-etr: Refactor function tmc_etr_setup_perf_buf()
  UPSTREAM: coresight: Communicate perf event to sink buffer allocation functions
  UPSTREAM: coresight: perf: Refactor function free_event_data()
  UPSTREAM: coresight: perf: Clean up function etm_setup_aux()
  UPSTREAM: coresight: Properly address concurrency in sink::update() functions
  UPSTREAM: coresight: Properly address errors in sink::disable() functions
  UPSTREAM: coresight: Move reference counting inside sink drivers
  UPSTREAM: coresight: Adding return code to sink::disable() operation
  UPSTREAM: coresight: etm4x: Configure tracers to emit timestamps
  UPSTREAM: coresight: etm4x: Skip selector pair 0
  UPSTREAM: coresight: etm4x: Add kernel configuration for CONTEXTID
  UPSTREAM: coresight: pmu: Adding ITRACE property to cs_etm PMU
  UPSTREAM: coresight: tmc: Cleanup power management
  UPSTREAM: coresight: Fix freeing up the coresight connections
  UPSTREAM: coresight: tmc: Report DMA setup failures
  UPSTREAM: coresight: catu: fix clang build warning
  UPSTREAM: perf/core: Fix the address filtering fix
  UPSTREAM: perf, pt, coresight: Fix address filters for vmas with non-zero offset
  UPSTREAM: perf: Copy parent's address filter offsets on clone
  UPSTREAM: coresight: Use event attributes for sink selection
  UPSTREAM: coresight: perf: Add "sinks" group to PMU directory
  UPSTREAM: coresight: etb10: Add support for CLAIM tag
  UPSTREAM: coreisght: tmc: Claim device before use
  UPSTREAM: coresight: dynamic-replicator: Claim device for use
  UPSTREAM: coresight: funnel: Claim devices before use
  UPSTREAM: coresight: etmx: Claim devices before use
  UPSTREAM: coresight: Add support for CLAIM tag protocol
  UPSTREAM: coresight: dynamic-replicator: Handle multiple connections
  UPSTREAM: coresight: etb10: Handle errors enabling the device
  UPSTREAM: coresight: etm3: Add support for handling errors
  UPSTREAM: coresight: etm4x: Add support for handling errors
  UPSTREAM: coresight: tmc-etb/etf: Prepare to handle errors enabling
  UPSTREAM: coresight: tmc-etr: Handle errors enabling CATU
  UPSTREAM: coresight: tmc-etr: Refactor for handling errors
  UPSTREAM: coresight: Handle failures in enabling a trace path
  UPSTREAM: coresight: tmc: Fix byte-address alignment for RRP
  UPSTREAM: coresight: etm4x: Configure EL2 exception level when kernel is running in HYP
  UPSTREAM: coresight: etb10: Splitting function etb_enable()
  UPSTREAM: coresight: etb10: Refactor etb_drvdata::mode handling
  UPSTREAM: coresight: etm-perf: Add support for ETR backend
  UPSTREAM: coresight: perf: Remove set_buffer call back
  UPSTREAM: coresight: perf: Add helper to retrieve sink configuration
  UPSTREAM: coresight: perf: Remove reset_buffer call back for sinks
  UPSTREAM: coresight: Convert driver messages to dev_dbg
  UPSTREAM: coresight: tmc-etr: Relax collection of trace from sysfs mode
  UPSTREAM: coresight: tmc-etr: Handle driver mode specific ETR buffers
  UPSTREAM: coresight: perf: Disable trace path upon source error
  UPSTREAM: coresight: perf: Allow tracing on hotplugged CPUs
  UPSTREAM: coresight: perf: Avoid unncessary CPU hotplug read lock
  UPSTREAM: coresight: perf: Fix per cpu path management
  UPSTREAM: coresight: Fix handling of sinks
  UPSTREAM: coresight: Use ERR_CAST instead of ERR_PTR
  UPSTREAM: coresight: Fix remote endpoint parsing
  UPSTREAM: coresight: platform: Fix leaking device reference
  UPSTREAM: coresight: platform: Fix refcounting for graph nodes
  UPSTREAM: coresight: platform: Refactor graph endpoint parsing
  UPSTREAM: coresight: Document error handling in coresight_register
  ANDROID: regression introduced override_creds=off
  ANDROID: overlayfs: internal getxattr operations without sepolicy checking
  ANDROID: overlayfs: add __get xattr method
  ANDROID: Add optional __get xattr method paired to __vfs_getxattr
  UPSTREAM: scsi: ufs: override auto suspend tunables for ufs
  UPSTREAM: scsi: core: allow auto suspend override by low-level driver
  FROMGIT: of: property: Skip adding device links to suppliers that aren't devices
  ANDROID: gki_defconfig: enable CONFIG_KEYBOARD_GPIO
  UPSTREAM: dm bufio: introduce a global cache replacement
  UPSTREAM: dm bufio: remove old-style buffer cleanup
  UPSTREAM: dm bufio: introduce a global queue
  UPSTREAM: dm bufio: refactor adjust_total_allocated
  UPSTREAM: dm bufio: call adjust_total_allocated from __link_buffer and __unlink_buffer
  ANDROID: dummy_cpufreq: Implement get()
  ANDROID: gki_defconfig: enable CONFIG_CPUSETS
  ANDROID: virtio: virtio_input: Set the amount of multitouch slots in virtio input
  rtlwifi: Fix potential overflow on P2P code
  ANDROID: cpufreq: create dummy cpufreq driver
  ANDROID: Allow DRM_IOCTL_MODE_*_DUMB for render clients.
  Cuttlefish Wifi: Add data ops in virt_wifi driver for scan data simulation
  ANDROID: of: property: Enable of_devlink by default
  ANDROID: of: property: Make sure child dependencies don't block probing of parent
  ANDROID: driver core: Allow fwnode_operations.add_links to differentiate errors
  ANDROID: driver core: Allow a device to wait on optional suppliers
  ANDROID: driver core: Add device link support for SYNC_STATE_ONLY flag
  FROMGIT: docs: driver-model: Add documentation for sync_state
  FROMGIT: driver: core: Improve documentation for fwnode_operations.add_links()
  FROMGIT: of: property: Minor code formatting/style clean ups
  ANDROID: of/property: Add device link support for iommus
  ANDROID: move up spin_unlock_bh() ahead of remove_proc_entry()
  BACKPORT: arm64: tags: Preserve tags for addresses translated via TTBR1
  UPSTREAM: arm64: memory: Implement __tag_set() as common function
  UPSTREAM: arm64/mm: fix variable 'tag' set but not used
  UPSTREAM: arm64: avoid clang warning about self-assignment
  ANDROID: sdcardfs: evict dentries on fscrypt key removal
  ANDROID: fscrypt: add key removal notifier chain
  ANDROID: refactor build.config files to remove duplication
  ANDROID: Move from clang r353983c to r365631c
  ANDROID: gki_defconfig: remove PWRSEQ_EMMC and PWRSEQ_SIMPLE
  ANDROID: unconditionally compile sig_ok in struct module
  ANDROID: gki_defconfig: enable fs-verity
  UPSTREAM: mm: vmalloc: show number of vmalloc pages in /proc/meminfo
  BACKPORT: PM/sleep: Expose suspend stats in sysfs
  UPSTREAM: power: supply: Init device wakeup after device_add()
  UPSTREAM: PM / wakeup: Unexport wakeup_source_sysfs_{add,remove}()
  UPSTREAM: PM / wakeup: Register wakeup class kobj after device is added
  UPSTREAM: PM / wakeup: Fix sysfs registration error path
  UPSTREAM: PM / wakeup: Show wakeup sources stats in sysfs
  UPSTREAM: PM / wakeup: Use wakeup_source_register() in wakelock.c
  UPSTREAM: PM / wakeup: Drop wakeup_source_init(), wakeup_source_prepare()
  UPSTREAM: PM / wakeup: Drop wakeup_source_drop()
  UPSTREAM: PM / core: Add support to skip power management in device/driver model
  gki_defconfig: Enable CONFIG_DM_SNAPSHOT
  ANDROID: gki_defconfig: enable accelerated AES and SHA-256
  ANDROID: fix overflow in /proc/uid_cputime/remove_uid_range
  ANDROID: kasan: fix has_attribute check on older GCC versions
  ANDROID: gki_defconfig: enable CONFIG_PARAVIRT and CONFIG_HYPERVISOR_GUEST
  ANDROID: gki_defconfig: enable CONFIG_NLS_*
  ANDROID: gki_defconfig: Enable BPF_JIT and BPF_JIT_ALWAYS_ON
  FROMGIT: of: property: Create device links for all child-supplier depencencies
  FROMGIT: of/platform: Pause/resume sync state during init and of_platform_populate()
  BACKPORT: FROMGIT: driver core: Add sync_state driver/bus callback
  BACKPORT: FROMGIT: of: property: Add functional dependency link from DT bindings
  FROMGIT: driver core: Add support for linking devices during device addition
  FROMGIT: driver core: Add fwnode_to_dev() to look up device from fwnode
  UPSTREAM: mm: untag user pointers in mmap/munmap/mremap/brk
  UPSTREAM: vfio/type1: untag user pointers in vaddr_get_pfn
  UPSTREAM: tee/shm: untag user pointers in tee_shm_register
  UPSTREAM: media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get
  UPSTREAM: drm/radeon: untag user pointers in radeon_gem_userptr_ioctl
  BACKPORT: drm/amdgpu: untag user pointers
  UPSTREAM: userfaultfd: untag user pointers
  UPSTREAM: fs/namespace: untag user pointers in copy_mount_options
  UPSTREAM: mm: untag user pointers in get_vaddr_frames
  UPSTREAM: mm: untag user pointers in mm/gup.c
  UPSTREAM: mm: untag user pointers passed to memory syscalls
  BACKPORT: lib: untag user pointers in strn*_user
  UPSTREAM: arm64: Fix reference to docs for ARM64_TAGGED_ADDR_ABI
  UPSTREAM: selftests, arm64: add kernel headers path for tags_test
  BACKPORT: arm64: Relax Documentation/arm64/tagged-pointers.rst
  UPSTREAM: arm64: Define Documentation/arm64/tagged-address-abi.rst
  UPSTREAM: arm64: Change the tagged_addr sysctl control semantics to only prevent the opt-in
  UPSTREAM: arm64: Tighten the PR_{SET, GET}_TAGGED_ADDR_CTRL prctl() unused arguments
  UPSTREAM: selftests, arm64: fix uninitialized symbol in tags_test.c
  UPSTREAM: arm64: mm: Really fix sparse warning in untagged_addr()
  UPSTREAM: selftests, arm64: add a selftest for passing tagged pointers to kernel
  BACKPORT: arm64: Introduce prctl() options to control the tagged user addresses ABI
  UPSTREAM: arm64: untag user pointers in access_ok and __uaccess_mask_ptr
  UPSTREAM: uaccess: add noop untagged_addr definition
  BACKPORT: block: annotate refault stalls from IO submission
  f2fs: add a condition to detect overflow in f2fs_ioc_gc_range()
  f2fs: fix to add missing F2FS_IO_ALIGNED() condition
  f2fs: fix to fallback to buffered IO in IO aligned mode
  f2fs: fix to handle error path correctly in f2fs_map_blocks
  f2fs: fix extent corrupotion during directIO in LFS mode
  f2fs: check all the data segments against all node ones
  f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY
  f2fs: fix inode rwsem regression
  f2fs: fix to avoid accessing uninitialized field of inode page in is_alive()
  f2fs: avoid infinite GC loop due to stale atomic files
  f2fs: Fix indefinite loop in f2fs_gc()
  f2fs: convert inline_data in prior to i_size_write
  f2fs: fix error path of f2fs_convert_inline_page()
  f2fs: add missing documents of reserve_root/resuid/resgid
  f2fs: fix flushing node pages when checkpoint is disabled
  f2fs: enhance f2fs_is_checkpoint_ready()'s readability
  f2fs: clean up __bio_alloc()'s parameter
  f2fs: fix wrong error injection path in inc_valid_block_count()
  f2fs: fix to writeout dirty inode during node flush
  f2fs: optimize case-insensitive lookups
  f2fs: introduce f2fs_match_name() for cleanup
  f2fs: Fix indefinite loop in f2fs_gc()
  f2fs: allocate memory in batch in build_sit_info()
  f2fs: support FS_IOC_{GET,SET}FSLABEL
  f2fs: fix to avoid data corruption by forbidding SSR overwrite
  f2fs: Fix build error while CONFIG_NLS=m
  Revert "f2fs: avoid out-of-range memory access"
  f2fs: cleanup the code in build_sit_entries.
  f2fs: fix wrong available node count calculation
  f2fs: remove duplicate code in f2fs_file_write_iter
  f2fs: fix to migrate blocks correctly during defragment
  f2fs: use wrapped f2fs_cp_error()
  f2fs: fix to use more generic EOPNOTSUPP
  f2fs: use wrapped IS_SWAPFILE()
  f2fs: Support case-insensitive file name lookups
  f2fs: include charset encoding information in the superblock
  fs: Reserve flag for casefolding
  f2fs: fix to avoid call kvfree under spinlock
  fs: f2fs: Remove unnecessary checks of SM_I(sbi) in update_general_status()
  f2fs: disallow direct IO in atomic write
  f2fs: fix to handle quota_{on,off} correctly
  f2fs: fix to detect cp error in f2fs_setxattr()
  f2fs: fix to spread f2fs_is_checkpoint_ready()
  f2fs: support fiemap() for directory inode
  f2fs: fix to avoid discard command leak
  f2fs: fix to avoid tagging SBI_QUOTA_NEED_REPAIR incorrectly
  f2fs: fix to drop meta/node pages during umount
  f2fs: disallow switching io_bits option during remount
  f2fs: fix panic of IO alignment feature
  f2fs: introduce {page,io}_is_mergeable() for readability
  f2fs: fix livelock in swapfile writes
  f2fs: add fs-verity support
  ext4: update on-disk format documentation for fs-verity
  ext4: add fs-verity read support
  ext4: add basic fs-verity support
  fs-verity: support builtin file signatures
  fs-verity: add SHA-512 support
  fs-verity: implement FS_IOC_MEASURE_VERITY ioctl
  fs-verity: implement FS_IOC_ENABLE_VERITY ioctl
  fs-verity: add data verification hooks for ->readpages()
  fs-verity: add the hook for file ->setattr()
  fs-verity: add the hook for file ->open()
  fs-verity: add inode and superblock fields
  fs-verity: add Kconfig and the helper functions for hashing
  fs: uapi: define verity bit for FS_IOC_GETFLAGS
  fs-verity: add UAPI header
  fs-verity: add MAINTAINERS file entry
  fs-verity: add a documentation file
  ext4: fix kernel oops caused by spurious casefold flag
  ext4: fix coverity warning on error path of filename setup
  ext4: optimize case-insensitive lookups
  ext4: fix dcache lookup of !casefolded directories
  unicode: update to Unicode 12.1.0 final
  unicode: add missing check for an error return from utf8lookup()
  ext4: export /sys/fs/ext4/feature/casefold if Unicode support is present
  unicode: refactor the rule for regenerating utf8data.h
  ext4: Support case-insensitive file name lookups
  ext4: include charset encoding information in the superblock
  unicode: update unicode database unicode version 12.1.0
  unicode: introduce test module for normalized utf8 implementation
  unicode: implement higher level API for string handling
  unicode: reduce the size of utf8data[]
  unicode: introduce code for UTF-8 normalization
  unicode: introduce UTF-8 character database
  ext4 crypto: fix to check feature status before get policy
  fscrypt: document the new ioctls and policy version
  ubifs: wire up new fscrypt ioctls
  f2fs: wire up new fscrypt ioctls
  ext4: wire up new fscrypt ioctls
  fscrypt: require that key be added when setting a v2 encryption policy
  fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS ioctl
  fscrypt: allow unprivileged users to add/remove keys for v2 policies
  fscrypt: v2 encryption policy support
  fscrypt: add an HKDF-SHA512 implementation
  fscrypt: add FS_IOC_GET_ENCRYPTION_KEY_STATUS ioctl
  fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl
  fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl
  fscrypt: rename keyinfo.c to keysetup.c
  fscrypt: move v1 policy key setup to keysetup_v1.c
  fscrypt: refactor key setup code in preparation for v2 policies
  fscrypt: rename fscrypt_master_key to fscrypt_direct_key
  fscrypt: add ->ci_inode to fscrypt_info
  fscrypt: use FSCRYPT_* definitions, not FS_*
  fscrypt: use FSCRYPT_ prefix for uapi constants
  fs, fscrypt: move uapi definitions to new header <linux/fscrypt.h>
  fscrypt: use ENOPKG when crypto API support missing
  fscrypt: improve warnings for missing crypto API support
  fscrypt: improve warning messages for unsupported encryption contexts
  fscrypt: make fscrypt_msg() take inode instead of super_block
  fscrypt: clean up base64 encoding/decoding
  fscrypt: remove loadable module related code

Updated following files to fix build errors:
	drivers/gpu/msm/kgsl_pool.c
	drivers/hwtracing/coresight/coresight-dummy.c
	drivers/iommu/dma-mapping-fast.c
	drivers/iommu/io-pgtable-fast.c
	drivers/iommu/io-pgtable-msm-secure.c
	kernel/taskstats.c
	mm/vmalloc.c
	security/selinux/ss/sidtab.h

Conflicts:
	arch/arm/Makefile
	arch/arm64/Kconfig
	arch/x86/include/asm/syscall_wrapper.h
	build.config.common
	drivers/clk/clk.c
	drivers/hwtracing/coresight/coresight-etm-perf.c
	drivers/hwtracing/coresight/coresight-funnel.c
	drivers/hwtracing/coresight/coresight-tmc-etf.c
	drivers/hwtracing/coresight/coresight-tmc-etr.c
	drivers/hwtracing/coresight/coresight-tmc.c
	drivers/hwtracing/coresight/coresight-tmc.h
	drivers/hwtracing/coresight/coresight.c
	drivers/hwtracing/coresight/of_coresight.c
	drivers/iommu/arm-smmu.c
	drivers/iommu/io-pgtable-arm.c
	drivers/iommu/io-pgtable.c
	drivers/scsi/scsi_sysfs.c
	drivers/scsi/sd.c
	drivers/scsi/ufs/ufshcd.c
	drivers/scsi/ufs/ufshcd.h
	drivers/staging/android/ion/ion.c
	drivers/staging/android/ion/ion.h
	drivers/staging/android/ion/ion_page_pool.c
	fs/ext4/readpage.c
	fs/f2fs/data.c
	fs/f2fs/f2fs.h
	fs/f2fs/file.c
	fs/f2fs/segment.c
	fs/f2fs/super.c
	include/linux/clk-provider.h
	include/linux/compiler_types.h
	include/linux/coresight.h
	include/linux/mmzone.h
	include/scsi/scsi_device.h
	include/trace/events/kmem.h
	kernel/events/core.c
	kernel/sched/core.c
	mm/vmstat.c

Change-Id: I2eca52b08b484f2b5c30437671cab8cb0195b8d6
Signed-off-by: Ivaylo Georgiev <[email protected]>
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Ivaylo Georgiev committed Mar 27, 2020
2 parents 1f946a6 + 34f21ff commit 4c30d46
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13 changes: 13 additions & 0 deletions Documentation/ABI/testing/sysfs-fs-f2fs
Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,12 @@ Contact: "Jaegeuk Kim" <[email protected]>
Description:
Controls the issue rate of segment discard commands.

What: /sys/fs/f2fs/<disk>/max_blkaddr
Date: November 2019
Contact: "Ramon Pantin" <[email protected]>
Description:
Shows first block address of MAIN area.

What: /sys/fs/f2fs/<disk>/ipu_policy
Date: November 2013
Contact: "Jaegeuk Kim" <[email protected]>
Expand Down Expand Up @@ -251,3 +257,10 @@ Description:
If checkpoint=disable, it displays the number of blocks that are unusable.
If checkpoint=enable it displays the enumber of blocks that would be unusable
if checkpoint=disable were to be set.

What: /sys/fs/f2fs/<disk>/encoding
Date July 2019
Contact: "Daniel Rosenberg" <[email protected]>
Description:
Displays name and version of the encoding set for the filesystem.
If no encoding is set, displays (none)
27 changes: 27 additions & 0 deletions Documentation/ABI/testing/sysfs-kernel-ion
Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
What: /sys/kernel/ion
Date: Dec 2019
KernelVersion: 4.14.158
Contact: Suren Baghdasaryan <[email protected]>,
Sandeep Patil <[email protected]>
Description:
The /sys/kernel/ion directory contains a snapshot of the
internal state of ION memory heaps and pools.
Users: kernel memory tuning tools

What: /sys/kernel/ion/total_heaps_kb
Date: Dec 2019
KernelVersion: 4.14.158
Contact: Suren Baghdasaryan <[email protected]>,
Sandeep Patil <[email protected]>
Description:
The total_heaps_kb file is read-only and specifies how much
memory in Kb is allocated to ION heaps.

What: /sys/kernel/ion/total_pools_kb
Date: Dec 2019
KernelVersion: 4.14.158
Contact: Suren Baghdasaryan <[email protected]>,
Sandeep Patil <[email protected]>
Description:
The total_pools_kb file is read-only and specifies how much
memory in Kb is allocated to ION pools.
108 changes: 107 additions & 1 deletion Documentation/ABI/testing/sysfs-power
Original file line number Diff line number Diff line change
Expand Up @@ -300,4 +300,110 @@ Description:
attempt.

Using this sysfs file will override any values that were
set using the kernel command line for disk offset.
set using the kernel command line for disk offset.

What: /sys/power/suspend_stats
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats directory contains suspend related
statistics.

What: /sys/power/suspend_stats/success
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/success file contains the number
of times entering system sleep state succeeded.

What: /sys/power/suspend_stats/fail
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/fail file contains the number
of times entering system sleep state failed.

What: /sys/power/suspend_stats/failed_freeze
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_freeze file contains the
number of times freezing processes failed.

What: /sys/power/suspend_stats/failed_prepare
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_prepare file contains the
number of times preparing all non-sysdev devices for
a system PM transition failed.

What: /sys/power/suspend_stats/failed_resume
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_resume file contains the
number of times executing "resume" callbacks of
non-sysdev devices failed.

What: /sys/power/suspend_stats/failed_resume_early
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_resume_early file contains
the number of times executing "early resume" callbacks
of devices failed.

What: /sys/power/suspend_stats/failed_resume_noirq
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_resume_noirq file contains
the number of times executing "noirq resume" callbacks
of devices failed.

What: /sys/power/suspend_stats/failed_suspend
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_suspend file contains
the number of times executing "suspend" callbacks
of all non-sysdev devices failed.

What: /sys/power/suspend_stats/failed_suspend_late
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_suspend_late file contains
the number of times executing "late suspend" callbacks
of all devices failed.

What: /sys/power/suspend_stats/failed_suspend_noirq
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/failed_suspend_noirq file contains
the number of times executing "noirq suspend" callbacks
of all devices failed.

What: /sys/power/suspend_stats/last_failed_dev
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/last_failed_dev file contains
the last device for which a suspend/resume callback failed.

What: /sys/power/suspend_stats/last_failed_errno
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/last_failed_errno file contains
the errno of the last failed attempt at entering
system sleep state.

What: /sys/power/suspend_stats/last_failed_step
Date: July 2019
Contact: Kalesh Singh <[email protected]>
Description:
The /sys/power/suspend_stats/last_failed_step file contains
the last failed step in the suspend/resume path.
1 change: 1 addition & 0 deletions Documentation/admin-guide/kernel-parameters.rst
Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,7 @@ parameter is applicable::
NET Appropriate network support is enabled.
NUMA NUMA support is enabled.
NFS Appropriate NFS support is enabled.
OF Devicetree is enabled.
OSS OSS sound support is enabled.
PV_OPS A paravirtualized kernel is enabled.
PARIDE The ParIDE (parallel port IDE) subsystem is enabled.
Expand Down
6 changes: 6 additions & 0 deletions Documentation/admin-guide/kernel-parameters.txt
Original file line number Diff line number Diff line change
Expand Up @@ -3118,6 +3118,12 @@
This can be set from sysctl after boot.
See Documentation/sysctl/vm.txt for details.

of_devlink [OF, KNL] Create device links between consumer and
supplier devices by scanning the devictree to infer the
consumer/supplier relationships. A consumer device
will not be probed until all the supplier devices have
probed successfully.

ohci1394_dma=early [HW] enable debugging via the ohci1394 driver.
See Documentation/debugging-via-ohci1394.txt for more
info.
Expand Down
156 changes: 156 additions & 0 deletions Documentation/arm64/tagged-address-abi.rst
Original file line number Diff line number Diff line change
@@ -0,0 +1,156 @@
==========================
AArch64 TAGGED ADDRESS ABI
==========================

Authors: Vincenzo Frascino <[email protected]>
Catalin Marinas <[email protected]>

Date: 21 August 2019

This document describes the usage and semantics of the Tagged Address
ABI on AArch64 Linux.

1. Introduction
---------------

On AArch64 the ``TCR_EL1.TBI0`` bit is set by default, allowing
userspace (EL0) to perform memory accesses through 64-bit pointers with
a non-zero top byte. This document describes the relaxation of the
syscall ABI that allows userspace to pass certain tagged pointers to
kernel syscalls.

2. AArch64 Tagged Address ABI
-----------------------------

From the kernel syscall interface perspective and for the purposes of
this document, a "valid tagged pointer" is a pointer with a potentially
non-zero top-byte that references an address in the user process address
space obtained in one of the following ways:

- ``mmap()`` syscall where either:

- flags have the ``MAP_ANONYMOUS`` bit set or
- the file descriptor refers to a regular file (including those
returned by ``memfd_create()``) or ``/dev/zero``

- ``brk()`` syscall (i.e. the heap area between the initial location of
the program break at process creation and its current location).

- any memory mapped by the kernel in the address space of the process
during creation and with the same restrictions as for ``mmap()`` above
(e.g. data, bss, stack).

The AArch64 Tagged Address ABI has two stages of relaxation depending
how the user addresses are used by the kernel:

1. User addresses not accessed by the kernel but used for address space
management (e.g. ``mmap()``, ``mprotect()``, ``madvise()``). The use
of valid tagged pointers in this context is always allowed.

2. User addresses accessed by the kernel (e.g. ``write()``). This ABI
relaxation is disabled by default and the application thread needs to
explicitly enable it via ``prctl()`` as follows:

- ``PR_SET_TAGGED_ADDR_CTRL``: enable or disable the AArch64 Tagged
Address ABI for the calling thread.

The ``(unsigned int) arg2`` argument is a bit mask describing the
control mode used:

- ``PR_TAGGED_ADDR_ENABLE``: enable AArch64 Tagged Address ABI.
Default status is disabled.

Arguments ``arg3``, ``arg4``, and ``arg5`` must be 0.

- ``PR_GET_TAGGED_ADDR_CTRL``: get the status of the AArch64 Tagged
Address ABI for the calling thread.

Arguments ``arg2``, ``arg3``, ``arg4``, and ``arg5`` must be 0.

The ABI properties described above are thread-scoped, inherited on
clone() and fork() and cleared on exec().

Calling ``prctl(PR_SET_TAGGED_ADDR_CTRL, PR_TAGGED_ADDR_ENABLE, 0, 0, 0)``
returns ``-EINVAL`` if the AArch64 Tagged Address ABI is globally
disabled by ``sysctl abi.tagged_addr_disabled=1``. The default
``sysctl abi.tagged_addr_disabled`` configuration is 0.

When the AArch64 Tagged Address ABI is enabled for a thread, the
following behaviours are guaranteed:

- All syscalls except the cases mentioned in section 3 can accept any
valid tagged pointer.

- The syscall behaviour is undefined for invalid tagged pointers: it may
result in an error code being returned, a (fatal) signal being raised,
or other modes of failure.

- The syscall behaviour for a valid tagged pointer is the same as for
the corresponding untagged pointer.


A definition of the meaning of tagged pointers on AArch64 can be found
in Documentation/arm64/tagged-pointers.rst.

3. AArch64 Tagged Address ABI Exceptions
-----------------------------------------

The following system call parameters must be untagged regardless of the
ABI relaxation:

- ``prctl()`` other than pointers to user data either passed directly or
indirectly as arguments to be accessed by the kernel.

- ``ioctl()`` other than pointers to user data either passed directly or
indirectly as arguments to be accessed by the kernel.

- ``shmat()`` and ``shmdt()``.

Any attempt to use non-zero tagged pointers may result in an error code
being returned, a (fatal) signal being raised, or other modes of
failure.

4. Example of correct usage
---------------------------
.. code-block:: c
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/prctl.h>
#define PR_SET_TAGGED_ADDR_CTRL 55
#define PR_TAGGED_ADDR_ENABLE (1UL << 0)
#define TAG_SHIFT 56
int main(void)
{
int tbi_enabled = 0;
unsigned long tag = 0;
char *ptr;
/* check/enable the tagged address ABI */
if (!prctl(PR_SET_TAGGED_ADDR_CTRL, PR_TAGGED_ADDR_ENABLE, 0, 0, 0))
tbi_enabled = 1;
/* memory allocation */
ptr = mmap(NULL, sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (ptr == MAP_FAILED)
return 1;
/* set a non-zero tag if the ABI is available */
if (tbi_enabled)
tag = rand() & 0xff;
ptr = (char *)((unsigned long)ptr | (tag << TAG_SHIFT));
/* memory access to a tagged address */
strcpy(ptr, "tagged pointer\n");
/* syscall with a tagged pointer */
write(1, ptr, strlen(ptr));
return 0;
}
21 changes: 14 additions & 7 deletions Documentation/arm64/tagged-pointers.txt
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,9 @@ Passing tagged addresses to the kernel
--------------------------------------

All interpretation of userspace memory addresses by the kernel assumes
an address tag of 0x00.
an address tag of 0x00, unless the application enables the AArch64
Tagged Address ABI explicitly
(Documentation/arm64/tagged-address-abi.rst).

This includes, but is not limited to, addresses found in:

Expand All @@ -31,13 +33,15 @@ This includes, but is not limited to, addresses found in:
- the frame pointer (x29) and frame records, e.g. when interpreting
them to generate a backtrace or call graph.

Using non-zero address tags in any of these locations may result in an
error code being returned, a (fatal) signal being raised, or other modes
of failure.
Using non-zero address tags in any of these locations when the
userspace application did not enable the AArch64 Tagged Address ABI may
result in an error code being returned, a (fatal) signal being raised,
or other modes of failure.

For these reasons, passing non-zero address tags to the kernel via
system calls is forbidden, and using a non-zero address tag for sp is
strongly discouraged.
For these reasons, when the AArch64 Tagged Address ABI is disabled,
passing non-zero address tags to the kernel via system calls is
forbidden, and using a non-zero address tag for sp is strongly
discouraged.

Programs maintaining a frame pointer and frame records that use non-zero
address tags may suffer impaired or inaccurate debug and profiling
Expand All @@ -57,6 +61,9 @@ be preserved.
The architecture prevents the use of a tagged PC, so the upper byte will
be set to a sign-extension of bit 55 on exception return.

This behaviour is maintained when the AArch64 Tagged Address ABI is
enabled.


Other considerations
--------------------
Expand Down
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