Focal update: v5.4.61 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:

       v5.4.61 upstream stable release
       from git://git.kernel.org/

Documentation/llvm: add documentation on building w/ Clang/LLVM
Documentation/llvm: fix the name of llvm-size
net: wan: wanxl: use allow to pass CROSS_COMPILE_M68k for rebuilding firmware
net: wan: wanxl: use $(M68KCC) instead of $(M68KAS) for rebuilding firmware
x86/boot: kbuild: allow readelf executable to be specified
kbuild: remove PYTHON2 variable
kbuild: remove AS variable
kbuild: replace AS=clang with LLVM_IAS=1
kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
drm/vgem: Replace opencoded version of drm_gem_dumb_map_offset()
gfs2: Improve mmap write vs. punch_hole consistency
gfs2: Never call gfs2_block_zero_range with an open transaction
perf probe: Fix memory leakage when the probe point is not found
khugepaged: khugepaged_test_exit() check mmget_still_valid()
khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
bcache: avoid nr_stripes overflow in bcache_device_init()
btrfs: export helpers for subvolume name/id resolution
btrfs: don't show full path of bind mounts in subvol=
btrfs: return EROFS for BTRFS_FS_STATE_ERROR cases
btrfs: add wrapper for transaction abort predicate
ALSA: hda/realtek: Add quirk for Samsung Galaxy Flex Book
ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion
can: j1939: transport: j1939_session_tx_dat(): fix use-after-free read in j1939_tp_txtimer()
can: j1939: socket: j1939_sk_bind(): make sure ml_priv is allocated
UBUNTU: [Config] update config for SPI_DYNAMIC
spi: Prevent adding devices below an unregistering controller
romfs: fix uninitialized memory leak in romfs_dev_read()
kernel/relay.c: fix memleak on destroy relay channel
uprobes: __replace_page() avoid BUG in munlock_vma_page()
mm: include CMA pages in lowmem_reserve at boot
mm, page_alloc: fix core hung in free_pcppages_bulk()
RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request
ext4: fix checking of directory entry validity for inline directories
jbd2: add the missing unlock_buffer() in the error path of jbd2_write_superblock()
scsi: zfcp: Fix use-after-free in request timeout handlers
drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal
drm/amd/display: Fix EDID parsing after resume from suspend
drm/amd/display: fix pow() crashing when given base 0
kthread: Do not preempt current task if it is going to call schedule()
opp: Enable resources again if they were disabled earlier
scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices
scsi: target: tcmu: Fix crash in tcmu_flush_dcache_range on ARM
media: budget-core: Improve exception handling in budget_register()
rtc: goldfish: Enable interrupt in set_alarm() when necessary
media: vpss: clean up resources in init
Input: psmouse - add a newline when printing 'proto' by sysfs
MIPS: Fix unable to reserve memory for Crash kernel
m68knommu: fix overwriting of bits in ColdFire V3 cache control
svcrdma: Fix another Receive buffer leak
xfs: fix inode quota reservation checks
drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access
jffs2: fix UAF problem
ceph: fix use-after-free for fsc->mdsc
swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses
cpufreq: intel_pstate: Fix cpuinfo_max_freq when MSR_TURBO_RATIO_LIMIT is 0
scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases
virtio_ring: Avoid loop when vq is broken in virtqueue_poll
media: camss: fix memory leaks on error handling paths in probe
tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference
xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init
alpha: fix annotation of io{read,write}{16,32}be()
fs/signalfd.c: fix inconsistent return codes for signalfd4
ext4: fix potential negative array index in do_split()
ext4: don't allow overlapping system zones
netfilter: nf_tables: nft_exthdr: the presence return value should be little-endian
spi: stm32: fixes suspend/resume management
ASoC: q6afe-dai: mark all widgets registers as SND_SOC_NOPM
ASoC: q6routing: add dummy register read/write function
bpf: sock_ops sk access may stomp registers when dst_reg = src_reg
can: j1939: fix kernel-infoleak in j1939_sk_sock2sockaddr_can()
can: j1939: transport: j1939_simple_recv(): ignore local J1939 messages send not by J1939 stack
can: j1939: transport: add j1939_session_skb_find_by_offset() function
i40e: Set RX_ONLY mode for unicast promiscuous on VLAN
i40e: Fix crash during removing i40e driver
net: fec: correct the error path for regulator disable in probe
bonding: show saner speed for broadcast mode
can: j1939: fix support for multipacket broadcast message
can: j1939: cancel rxtimer on multipacket broadcast session complete
can: j1939: abort multipacket broadcast session when timeout occurs
can: j1939: add rxtimer for multipacket broadcast session
bonding: fix a potential double-unregister
s390/runtime_instrumentation: fix storage key handling
s390/ptrace: fix storage key handling
ASoC: msm8916-wcd-analog: fix register Interrupt offset
ASoC: intel: Fix memleak in sst_media_open
vfio/type1: Add proper error unwind for vfio_iommu_replay()
kvm: x86: Toggling CR4.SMAP does not load PDPTEs in PAE mode
kvm: x86: Toggling CR4.PKE does not load PDPTEs in PAE mode
Revert "scsi: qla2xxx: Disable T10-DIF feature with FC-NVMe during probe"
kconfig: qconf: do not limit the pop-up menu to the first row
kconfig: qconf: fix signal connection to invalid slots
efi: avoid error message when booting under Xen
Fix build error when CONFIG_ACPI is not set/enabled:
RDMA/bnxt_re: Do not add user qps to flushlist
afs: Fix NULL deref in afs_dynroot_depopulate()
bonding: fix active-backup failover for current ARP slave
net: ena: Prevent reset after device destruction
net: gemini: Fix missing free_netdev() in error path of gemini_ethernet_port_probe()
hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()
net: dsa: b53: check for timeout
powerpc/pseries: Do not initiate shutdown when system is running on UPS
efi: add missed destroy_workqueue when efisubsys_init fails
epoll: Keep a reference on files added to the check list
do_epoll_ctl(): clean the failure exits up a bit
mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
xen: don't reschedule in preemption off sections
KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set
Linux 5.4.61
UBUNTU: upstream stable to v5.4.61