Focal update: v5.4.28 upstream stable release

[Kamal Mostafa]

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

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.4.0-24.28

---------------
linux (5.4.0-24.28) focal; urgency=medium

  * focal/linux: 5.4.0-24.28 -proposed tracker (LP: #1871939)

  * getitimer returns it_value=0 erroneously (LP: #1349028)
    - [Config] CONTEXT_TRACKING_FORCE policy should be unset

  * 12d1:1038 Dual-Role OTG device on non-HNP port - unable to enumerate USB
    device on port 1 (LP: #1047527)
    - [Config] USB_OTG_FSM policy not needed

  * Add DCPD backlight support for HP CML system (LP: #1871589)
    - SAUCE: drm/i915: Force DPCD backlight mode for HP CML 2020 system

  * Backlight brightness cannot be adjusted using keys (LP: #1860303)
    - SAUCE drm/i915: Force DPCD backlight mode for HP Spectre x360 Convertible
      13t-aw100

  * CVE-2020-11494
    - slcan: Don't transmit uninitialized stack data in padding

  * Ubuntu Kernel Support for OpenPOWER NV Secure & Trusted Boot (LP: #1866909)
    - powerpc: Detect the secure boot mode of the system
    - powerpc/ima: Add support to initialize ima policy rules
    - powerpc: Detect the trusted boot state of the system
    - powerpc/ima: Define trusted boot policy
    - ima: Make process_buffer_measurement() generic
    - certs: Add wrapper function to check blacklisted binary hash
    - ima: Check against blacklisted hashes for files with modsig
    - powerpc/ima: Update ima arch policy to check for blacklist
    - powerpc/ima: Indicate kernel modules appended signatures are enforced
    - powerpc/powernv: Add OPAL API interface to access secure variable
    - powerpc: expose secure variables to userspace via sysfs
    - x86/efi: move common keyring handler functions to new file
    - powerpc: Load firmware trusted keys/hashes into kernel keyring
    - x86/efi: remove unused variables

  * [roce-0227]sync mainline kernel 5.6rc3 roce patchset into ubuntu HWE kernel
    branch (LP: #1864950)
    - RDMA/hns: Cleanups of magic numbers
    - RDMA/hns: Optimize eqe buffer allocation flow
    - RDMA/hns: Add the workqueue framework for flush cqe handler
    - RDMA/hns: Delayed flush cqe process with workqueue
    - RDMA/hns: fix spelling mistake: "attatch" -> "attach"
    - RDMA/hns: Initialize all fields of doorbells to zero
    - RDMA/hns: Treat revision HIP08_A as a special case
    - RDMA/hns: Use flush framework for the case in aeq
    - RDMA/hns: Stop doorbell update while qp state error
    - RDMA/hns: Optimize qp destroy flow
    - RDMA/hns: Optimize qp context create and destroy flow
    - RDMA/hns: Optimize qp number assign flow
    - RDMA/hns: Optimize qp buffer allocation flow
    - RDMA/hns: Optimize qp param setup flow
    - RDMA/hns: Optimize kernel qp wrid allocation flow
    - RDMA/hns: Optimize qp doorbell allocation flow
    - RDMA/hns: Check if depth of qp is 0 before configure

  * [hns3-0316]sync mainline kernel 5.6rc4 hns3 patchset into ubuntu HWE kernel
    branch (LP: #1867586)
    - net: hns3: modify an unsuitable print when setting unknown duplex to fibre
    - net: hns3: add enabled TC numbers and DWRR weight info in debugfs
    - net: hns3: add support for dump MAC ID and loopback status in debugfs
    - net: hns3: add missing help info for QS shaper...