Focal update: v5.4.121 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:

       v5.4.121 upstream stable release
       from git://git.kernel.org/

x86/msr: Fix wr/rdmsr_safe_regs_on_cpu() prototypes
kgdb: fix gcc-11 warning on indentation
usb: sl811-hcd: improve misleading indentation
cxgb4: Fix the -Wmisleading-indentation warning
isdn: capi: fix mismatched prototypes
pinctrl: ingenic: Improve unreachable code generation
xsk: Simplify detection of empty and full rings
virtio_net: Do not pull payload in skb->head
PCI: thunder: Fix compile testing
dmaengine: dw-edma: Fix crash on loading/unloading driver
ARM: 9066/1: ftrace: pause/unpause function graph tracer in cpu_suspend()
ACPI / hotplug / PCI: Fix reference count leak in enable_slot()
Input: elants_i2c - do not bind to i2c-hid compatible ACPI instantiated devices
Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state
um: Mark all kernel symbols as local
um: Disable CONFIG_GCOV with MODULES
ARM: 9075/1: kernel: Fix interrupted SMC calls
scripts/recordmcount.pl: Fix RISC-V regex for clang
riscv: Workaround mcount name prior to clang-13
scsi: lpfc: Fix illegal memory access on Abort IOCBs
ceph: fix fscache invalidation
scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
bridge: Fix possible races between assigning rx_handler_data and setting IFF_BRIDGE_PORT bit
drm/amd/display: Fix two cursor duplication when using overlay
gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055
ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP
block: reexpand iov_iter after read/write
lib: stackdepot: turn depot_lock spinlock to raw_spinlock
net: stmmac: Do not enable RX FIFO overflow interrupts
ip6_gre: proper dev_{hold|put} in ndo_[un]init methods
sit: proper dev_{hold|put} in ndo_[un]init methods
ip6_tunnel: sit: proper dev_{hold|put} in ndo_[un]init methods
ipv6: remove extra dev_hold() for fallback tunnels
KVM: arm64: Initialize VCPU mdcr_el2 before loading it
tweewide: Fix most Shebang lines
scripts: switch explicitly to Python 3
Linux 5.4.121
UBUNTU: upstream stable to v5.4.121

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.4.0-80.90

---------------
linux (5.4.0-80.90) focal; urgency=medium

  * CVE-2021-33909
    - SAUCE: seq_file: Disallow extremely large seq buffer allocations

linux (5.4.0-79.88) focal; urgency=medium

  * focal/linux: 5.4.0-79.88 -proposed tracker (LP: #1934343)

  * lxd exec fails (LP: #1934187)
    - SAUCE: Revert "proc: Check /proc/$pid/attr/ writes against file opener"

linux (5.4.0-78.87) focal; urgency=medium

  * focal/linux: 5.4.0-78.87 -proposed tracker (LP: #1932478)

  * Packaging resync (LP: #1786013)
    - [Packaging] resync getabis
    - [Packaging] update helper scripts
    - update dkms package versions

  * Disable hv-kvp-daemon.service on certain instance types (LP: #1932081)
    - [Packaging]: Add kernel command line condition to hv-kvp-daemon service

  * QLogic Direct-Connect host can't discover SCSI-FC or NVMe/FC devices
    (LP: #1860724)
    - scsi: qla2xxx: Serialize fc_port alloc in N2N
    - scsi: qla2xxx: Set Nport ID for N2N
    - scsi: qla2xxx: Fix point-to-point (N2N) device discovery issue
    - scsi: qla2xxx: Fix N2N and NVMe connect retry failure

  * [SRU] Add support for E810 NIC to Ice Driver in Focal (LP: #1912511)
    - ice: add additional E810 device id

  * Focal update: v5.4.124 upstream stable release (LP: #1931166)
    - ALSA: hda/realtek: Headphone volume is controlled by Front mixer
    - ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
    - ALSA: usb-audio: scarlett2: Improve driver startup messages
    - cifs: set server->cipher_type to AES-128-CCM for SMB3.0
    - NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
    - iommu/vt-d: Fix sysfs leak in alloc_iommu()
    - perf intel-pt: Fix sample instruction bytes
    - perf intel-pt: Fix transaction abort handling
    - perf scripts python: exported-sql-viewer.py: Fix copy to clipboard from Top
      Calls by elapsed Time report
    - perf scripts python: exported-sql-viewer.py: Fix Array TypeError
    - perf scripts python: exported-sql-viewer.py: Fix warning display
    - proc: Check /proc/$pid/attr/ writes against file opener
    - net: hso: fix control-request directions
    - ath10k: Validate first subframe of A-MSDU before processing the list
    - dm snapshot: properly fix a crash when an origin has no snapshots
    - drm/amdgpu/vcn1: add cancel_delayed_work_sync before power gate
    - drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
    - drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
    - selftests/gpio: Use TEST_GEN_PROGS_EXTENDED
    - selftests/gpio: Move include of lib.mk up
    - selftests/gpio: Fix build when source tree is read only
    - kgdb: fix gcc-11 warnings harder
    - Documentation: seccomp: Fix user notification documentation
    - serial: core: fix suspicious security_locked_down() call
    - misc/uss720: fix memory leak in uss720_probe
    - thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
    - mei: request autosuspend after sending rx flow control
    - staging: iio: cdc: ad7746: avoid overwrite of num_channels
    - iio: gyro: fxas21002c: balance runtime power in error path
    - ...