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

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https://bugs.launchpad.net/bugs/1869061

Title:
  Focal update: v5.4.28 upstream stable release

Status in linux package in Ubuntu:
  Fix Committed
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:

         v5.4.28 upstream stable release
         from git://git.kernel.org/

  locks: fix a potential use-after-free problem when wakeup a waiter
  locks: reinstate locks_delete_block optimization
  spi: spi-omap2-mcspi: Support probe deferral for DMA channels
  drm/mediatek: Find the cursor plane instead of hard coding it
  phy: ti: gmii-sel: fix set of copy-paste errors
  phy: ti: gmii-sel: do not fail in case of gmii
  ARM: dts: dra7-l4: mark timer13-16 as pwm capable
  spi: qup: call spi_qup_pm_resume_runtime before suspending
  powerpc: Include .BTF section
  cifs: fix potential mismatch of UNC paths
  cifs: add missing mount option to /proc/mounts
  ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
  spi: pxa2xx: Add CS control clock quirk
  spi/zynqmp: remove entry that causes a cs glitch
  drm/exynos: dsi: propagate error value and silence meaningless warning
  drm/exynos: dsi: fix workaround for the legacy clock name
  drm/exynos: hdmi: don't leak enable HDMI_EN regulator if probe fails
  drivers/perf: fsl_imx8_ddr: Correct the CLEAR bit definition
  drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer
  altera-stapl: altera_get_note: prevent write beyond end of 'key'
  dm bio record: save/restore bi_end_io and bi_integrity
  dm integrity: use dm_bio_record and dm_bio_restore
  riscv: avoid the PIC offset of static percpu data in module beyond 2G limits
  ASoC: stm32: sai: manage rebind issue
  spi: spi_register_controller(): free bus id on error paths
  riscv: Force flat memory model with no-mmu
  riscv: Fix range looking for kernel image memblock
  drm/amdgpu: clean wptr on wb when gpu recovery
  drm/amd/display: Clear link settings on MST disable connector
  drm/amd/display: fix dcc swath size calculations on dcn1
  xenbus: req->body should be updated before req->state
  xenbus: req->err should be updated before req->state
  block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()
  parse-maintainers: Mark as executable
  binderfs: use refcount for binder control devices too
  Revert "drm/fbdev: Fallback to non tiled mode if all tiles not present"
  usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters
  USB: serial: option: add ME910G1 ECM composition 0x110b
  usb: host: xhci-plat: add a shutdown
  USB: serial: pl2303: add device-id for HP LD381
  usb: xhci: apply XHCI_SUSPEND_DELAY to AMD XHCI controller 1022:145c
  usb: typec: ucsi: displayport: Fix NULL pointer dereference
  usb: typec: ucsi: displayport: Fix a potential race during registration
  USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL
  USB: cdc-acm: fix rounding error in TIOCSSERIAL
  ALSA: line6: Fix endless MIDI read loop
  ALSA: hda/realtek - Enable headset mic of Acer X2660G with ALC662
  ALSA: hda/realtek - Enable the headset of Acer N50-600 with ALC662
  ALSA: seq: virmidi: Fix running status after receiving sysex
  ALSA: seq: oss: Fix running status after receiving sysex
  ALSA: pcm: oss: Avoid plugin buffer overflow
  ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks
  tty: fix compat TIOCGSERIAL leaking uninitialized memory
  tty: fix compat TIOCGSERIAL checking wrong function ptr
  iio: chemical: sps30: fix missing triggered buffer dependency
  iio: st_sensors: remap SMO8840 to LIS2DH12
  iio: trigger: stm32-timer: disable master mode when stopping
  iio: accel: adxl372: Set iio_chan BE
  iio: magnetometer: ak8974: Fix negative raw values in sysfs
  iio: adc: stm32-dfsdm: fix sleep in atomic context
  iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode
  iio: light: vcnl4000: update sampling periods for vcnl4200
  iio: light: vcnl4000: update sampling periods for vcnl4040
  mmc: rtsx_pci: Fix support for speed-modes that relies on tuning
  mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2
  mmc: sdhci-cadence: set SDHCI_QUIRK2_PRESET_VALUE_BROKEN for UniPhier
  CIFS: fiemap: do not return EINVAL if get nothing
  kbuild: Disable -Wpointer-to-enum-cast
  staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
  staging: greybus: loopback_test: fix poll-mask build breakage
  staging/speakup: fix get_word non-space look-ahead
  intel_th: msu: Fix the unexpected state warning
  intel_th: Fix user-visible error codes
  intel_th: pci: Add Elkhart Lake CPU support
  modpost: move the namespace field in Module.symvers last
  rtc: max8907: add missing select REGMAP_IRQ
  arm64: compat: Fix syscall number of compat_clock_getres
  xhci: Do not open code __print_symbolic() in xhci trace events
  btrfs: fix log context list corruption after rename whiteout error
  drm/amd/amdgpu: Fix GPR read from debugfs (v2)
  drm/lease: fix WARNING in idr_destroy
  stm class: sys-t: Fix the use of time_after()
  memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
  mm, memcg: fix corruption on 64-bit divisor in memory.high throttling
  mm, memcg: throttle allocators based on ancestral memory.high
  mm/hotplug: fix hot remove failure in SPARSEMEM|!VMEMMAP case
  mm: do not allow MADV_PAGEOUT for CoW pages
  epoll: fix possible lost wakeup on epoll_ctl() path
  mm: slub: be more careful about the double cmpxchg of freelist
  mm, slub: prevent kmalloc_node crashes and memory leaks
  page-flags: fix a crash at SetPageError(THP_SWAP)
  x86/mm: split vmalloc_sync_all()
  futex: Fix inode life-time issue
  futex: Unbreak futex hashing
  ALSA: hda/realtek: Fix pop noise on ALC225
  arm64: smp: fix smp_send_stop() behaviour
  arm64: smp: fix crash_smp_send_stop() behaviour
  nvmet-tcp: set MSG_MORE only if we actually have more to send
  drm/bridge: dw-hdmi: fix AVI frame colorimetry
  staging: greybus: loopback_test: fix potential path truncation
  staging: greybus: loopback_test: fix potential path truncations
  Linux 5.4.28

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