** Changed in: linux (Ubuntu Focal)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1908562

Title:
  Focal update: v5.4.81 upstream stable release

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Focal:
  Fix Committed

Bug description:
  SRU Justification

      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The following upstream
         stable patches should be included in the Ubuntu kernel:

         v5.4.81 upstream stable release
         from git://git.kernel.org/

  spi: bcm-qspi: Fix use-after-free on unbind
  spi: bcm2835: Fix use-after-free on unbind
  ipv4: use IS_ENABLED instead of ifdef
  netfilter: clear skb->next in NF_HOOK_LIST()
  btrfs: tree-checker: add missing return after error in root_item
  btrfs: tree-checker: add missing returns after data_ref alignment checks
  btrfs: don't access possibly stale fs_info data for printing duplicate device
  btrfs: fix lockdep splat when reading qgroup config on mount
  wireless: Use linux/stddef.h instead of stddef.h
  smb3: Call cifs reconnect from demultiplex thread
  smb3: Avoid Mid pending list corruption
  smb3: Handle error case during offload read path
  cifs: fix a memleak with modefromsid
  KVM: PPC: Book3S HV: XIVE: Fix possible oops when accessing ESB page
  KVM: arm64: vgic-v3: Drop the reporting of GICR_TYPER.Last for userspace
  KVM: x86: handle !lapic_in_kernel case in kvm_cpu_*_extint
  KVM: x86: Fix split-irqchip vs interrupt injection window request
  trace: fix potenial dangerous pointer
  arm64: pgtable: Fix pte_accessible()
  arm64: pgtable: Ensure dirty bit is preserved across pte_wrprotect()
  HID: uclogic: Add ID for Trust Flex Design Tablet
  HID: ite: Replace ABS_MISC 120/121 events with touchpad on/off keypresses
  HID: cypress: Support Varmilo Keyboards' media hotkeys
  HID: add support for Sega Saturn
  Input: i8042 - allow insmod to succeed on devices without an i8042 controller
  HID: hid-sensor-hub: Fix issue with devices with no report ID
  staging: ralink-gdma: fix kconfig dependency bug for DMA_RALINK
  HID: add HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE for Gamevice devices
  dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant
  x86/xen: don't unbind uninitialized lock_kicker_irq
  HID: logitech-hidpp: Add HIDPP_CONSUMER_VENDOR_KEYS quirk for the Dinovo Edge
  HID: Add Logitech Dinovo Edge battery quirk
  proc: don't allow async path resolution of /proc/self components
  nvme: free sq/cq dbbuf pointers when dbbuf set fails
  vhost scsi: fix cmd completion race
  dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size
  scsi: libiscsi: Fix NOP race condition
  scsi: target: iscsi: Fix cmd abort fabric stop race
  perf/x86: fix sysfs type mismatches
  xtensa: uaccess: Add missing __user to strncpy_from_user() prototype
  net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset
  bus: ti-sysc: Fix bogus resetdone warning on enable for cpsw
  ARM: OMAP2+: Manage MPU state properly for omap_enter_idle_coupled()
  phy: tegra: xusb: Fix dangling pointer on probe failure
  iwlwifi: mvm: write queue_sync_state only for sync
  batman-adv: set .owner to THIS_MODULE
  arch: pgtable: define MAX_POSSIBLE_PHYSMEM_BITS where needed
  ARM: dts: dra76x: m_can: fix order of clocks
  scsi: ufs: Fix race between shutdown and runtime resume flow
  bnxt_en: fix error return code in bnxt_init_one()
  bnxt_en: fix error return code in bnxt_init_board()
  video: hyperv_fb: Fix the cache type when mapping the VRAM
  bnxt_en: Release PCI regions when DMA mask setup fails during probe.
  cxgb4: fix the panic caused by non smac rewrite
  s390/qeth: make af_iucv TX notification call more robust
  s390/qeth: fix af_iucv notification race
  s390/qeth: fix tear down of async TX buffers
  ibmvnic: fix call_netdevice_notifiers in do_reset
  ibmvnic: notify peers when failover and migration happen
  powerpc/64s: Fix allnoconfig build since uaccess flush
  IB/mthca: fix return value of error branch in mthca_init_cq()
  i40e: Fix removing driver while bare-metal VFs pass traffic
  nfc: s3fwrn5: use signed integer for parsing GPIO numbers
  net: ena: set initial DMA width to avoid intel iommu issue
  ibmvnic: fix NULL pointer dereference in reset_sub_crq_queues
  ibmvnic: fix NULL pointer dereference in ibmvic_reset_crq
  optee: add writeback to valid memory type
  arm64: tegra: Wrong AON HSP reg property size
  efivarfs: revert "fix memory leak in efivarfs_create()"
  efi: EFI_EARLYCON should depend on EFI
  can: gs_usb: fix endianess problem with candleLight firmware
  platform/x86: thinkpad_acpi: Send tablet mode switch at wakeup time
  platform/x86: toshiba_acpi: Fix the wrong variable assignment
  RDMA/hns: Fix retry_cnt and rnr_cnt when querying QP
  RDMA/hns: Bugfix for memory window mtpt configuration
  can: m_can: m_can_open(): remove IRQF_TRIGGER_FALLING from 
request_threaded_irq()'s flags
  can: m_can: fix nominal bitiming tseg2 min for version >= 3.1
  perf stat: Use proper cpu for shadow stats
  perf probe: Fix to die_entrypc() returns error correctly
  spi: bcm2835aux: Restore err assignment in bcm2835aux_spi_probe
  USB: core: Change %pK for __user pointers to %px
  usb: gadget: f_midi: Fix memleak in f_midi_alloc
  USB: quirks: Add USB_QUIRK_DISCONNECT_SUSPEND quirk for Lenovo A630Z TIO 
built-in usb-audio card
  usb: gadget: Fix memleak in gadgetfs_fill_super
  irqchip/exiu: Fix the index of fwspec for IRQ type
  x86/mce: Do not overwrite no_way_out if mce_end() fails
  x86/speculation: Fix prctl() when spectre_v2_user={seccomp,prctl},ibpb
  x86/resctrl: Remove superfluous kernfs_get() calls to prevent refcount leak
  x86/resctrl: Add necessary kernfs_put() calls to prevent refcount leak
  USB: core: Fix regression in Hercules audio card
  ASoC: Intel: Skylake: Remove superfluous chip initialization
  ASoC: Intel: Skylake: Select hda configuration permissively
  ASoC: Intel: Skylake: Enable codec wakeup during chip init
  ASoC: Intel: Skylake: Shield against no-NHLT configurations
  ASoC: Intel: Allow for ROM init retry on CNL platforms
  ASoC: Intel: Skylake: Await purge request ack on CNL
  ASoC: Intel: Multiple I/O PCM format support for pipe
  ASoC: Intel: Skylake: Automatic DMIC format configuration according to 
information from NHLT
  Linux 5.4.81
  UBUNTU: upstream stable to v5.4.81

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