Focal update: v5.4.51 upstream stable release

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:

       v5.4.51 upstream stable release
       from git://git.kernel.org/

io_uring: make sure async workqueue is canceled on exit
mm: fix swap cache node allocation mask
EDAC/amd64: Read back the scrub rate PCI register on F15h
usbnet: smsc95xx: Fix use-after-free after removal
sched/debug: Make sd->flags sysctl read-only
mm/slub.c: fix corrupted freechain in deactivate_slab()
mm/slub: fix stack overruns with SLUB_STATS
rxrpc: Fix race between incoming ACK parser and retransmitter
usb: usbtest: fix missing kfree(dev->buf) in usbtest_disconnect
tools lib traceevent: Add append() function helper for appending strings
tools lib traceevent: Handle __attribute__((user)) in field names
s390/debug: avoid kernel warning on too large number of pages
nvme-multipath: set bdi capabilities once
nvme-multipath: fix deadlock between ana_work and scan_work
nvme-multipath: fix deadlock due to head->lock
nvme-multipath: fix bogus request queue reference put
kgdb: Avoid suspicious RCU usage warning
selftests: tpm: Use /bin/sh instead of /bin/bash
crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock()
drm/msm/dpu: fix error return code in dpu_encoder_init
rxrpc: Fix afs large storage transmission performance drop
RDMA/counter: Query a counter before release
cxgb4: use unaligned conversion for fetching timestamp
cxgb4: parse TC-U32 key values and masks natively
cxgb4: fix endian conversions for L4 ports in filters
cxgb4: use correct type for all-mask IP address comparison
cxgb4: fix SGE queue dump destination buffer context
hwmon: (max6697) Make sure the OVERT mask is set correctly
hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
thermal/drivers/mediatek: Fix bank number settings on mt8183
thermal/drivers/rcar_gen3: Fix undefined temperature if negative
nfsd4: fix nfsdfs reference count loop
nfsd: fix nfsdfs inode reference count leak
drm: sun4i: hdmi: Remove extra HPD polling
virtio-blk: free vblk-vqs in error path of virtblk_probe()
SMB3: Honor 'posix' flag for multiuser mounts
nvme: fix identify error status silent ignore
nvme: fix a crash in nvme_mpath_add_disk
samples/vfs: avoid warning in statx override
i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665
i2c: mlxcpld: check correct size of maximum RECV_LEN packet
spi: spi-fsl-dspi: Fix external abort on interrupt in resume or exit paths
nfsd: apply umask on fs without ACL support
Revert "ALSA: usb-audio: Improve frames size computation"
SMB3: Honor 'seal' flag for multiuser mounts
SMB3: Honor persistent/resilient handle flags for multiuser mounts
SMB3: Honor lease disabling for multiuser mounts
SMB3: Honor 'handletimeout' flag for multiuser mounts
cifs: Fix the target file was deleted when rename failed.
MIPS: lantiq: xway: sysctrl: fix the GPHY clock alias names
MIPS: Add missing EHB in mtc0 -> mfc0 sequence for DSPen
drm/amd/display: Only revalidate bandwidth on medium and fast updates
drm/amdgpu: use %u rather than %d for sclk/mclk
drm/amdgpu/atomfirmware: fix vram_info fetching for renoir
dma-buf: Move dma_buf_release() from fops to dentry_ops
irqchip/gic: Atomically update affinity
mm, compaction: fully assume capture is not NULL in compact_zone_order()
mm, compaction: make capture control handling safe wrt interrupts
x86/resctrl: Fix memory bandwidth counter width for AMD
dm zoned: assign max_io_len correctly
UBUNTU: [Config] updateconfigs for EFI_CUSTOM_SSDT_OVERLAYS
efi: Make it possible to disable efivar_ssdt entirely
Linux 5.4.51
UBUNTU: upstream stable to v5.4.51