Comment 0 for bug 1893048

    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:

       v5.8.4 upstream stable release
       from git://git.kernel.org/

Linux 5.8.4
Revert "drm/amd/display: Improve DisplayPort monitor interop"
KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set
KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
do_epoll_ctl(): clean the failure exits up a bit
efi/libstub: Handle unterminated cmdline
efi/libstub: Handle NULL cmdline
efi/libstub: Stop parsing arguments at "--"
efi: add missed destroy_workqueue when efisubsys_init fails
efi/x86: Mark kernel rodata non-executable for mixed mode
EDAC/{i7core,sb,pnd2,skx}: Fix error event severity
powerpc/pseries: Do not initiate shutdown when system is running on UPS
powerpc: Fix P10 PVR revision in /proc/cpuinfo for SMT4 cores
epoll: Keep a reference on files added to the check list
net: dsa: b53: check for timeout
hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()
selftests/bpf: Remove test_align leftovers
net: gemini: Fix missing free_netdev() in error path of gemini_ethernet_port_probe()
net: ena: Change WARN_ON expression in ena_del_napi_in_range()
net: ena: Prevent reset after device destruction
bonding: fix active-backup failover for current ARP slave
powerpc/pseries/hotplug-cpu: wait indefinitely for vCPU death
bpf: Use get_file_rcu() instead of get_file() for task_file iterator
powerpc/fixmap: Fix the size of the early debug area
ARM64: vdso32: Install vdso32 from vdso_install
afs: Fix NULL deref in afs_dynroot_depopulate()
kconfig: qconf: remove qInfo() to get back Qt4 support
afs: Fix key ref leak in afs_put_operation()
Revert "RDMA/hns: Reserve one sge in order to avoid local length error"
RDMA/bnxt_re: Do not add user qps to flushlist
Fix build error when CONFIG_ACPI is not set/enabled:
efi: avoid error message when booting under Xen
kconfig: qconf: fix signal connection to invalid slots
kconfig: qconf: do not limit the pop-up menu to the first row
Revert "scsi: qla2xxx: Disable T10-DIF feature with FC-NVMe during probe"
scsi: ufs: Fix interrupt error message for shared interrupts
scsi: ufs-pci: Add quirk for broken auto-hibernate for Intel EHL
scsi: ufs: Add quirk to fix abnormal ocs fatal error
scsi: ufs: Introduce UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk
scsi: ufs: Add quirk to enable host controller without hce
scsi: ufs: Add quirk to disallow reset of interrupt aggregation
scsi: ufs: Add quirk to fix mishandling utrlclr/utmrlclr
scsi: ufs: ti-j721e-ufs: Fix error return in ti_j721e_ufs_probe()
of/address: check for invalid range.cpu_addr
kvm: x86: Toggling CR4.PKE does not load PDPTEs in PAE mode
kvm: x86: Toggling CR4.SMAP does not load PDPTEs in PAE mode
arch/ia64: Restore arch-specific pgd_offset_k implementation
vfio/type1: Add proper error unwind for vfio_iommu_replay()
vfio-pci: Avoid recursive read-lock usage
watch_queue: Limit the number of watches a user can hold
ASoC: intel: Fix memleak in sst_media_open
ASoC: msm8916-wcd-analog: fix register Interrupt offset
s390/ptrace: fix storage key handling
s390/runtime_instrumentation: fix storage key handling
ipvlan: fix device features
bonding: fix a potential double-unregister
can: j1939: add rxtimer for multipacket broadcast session
can: j1939: abort multipacket broadcast session when timeout occurs
can: j1939: cancel rxtimer on multipacket broadcast session complete
can: j1939: fix support for multipacket broadcast message
bonding: show saner speed for broadcast mode
net: fec: correct the error path for regulator disable in probe
i40e: Fix crash during removing i40e driver
i40e: Set RX_ONLY mode for unicast promiscuous on VLAN
igc: Fix PTP initialization
can: j1939: transport: add j1939_session_skb_find_by_offset() function
can: j1939: transport: j1939_simple_recv(): ignore local J1939 messages send not by J1939 stack
can: j1939: fix kernel-infoleak in j1939_sk_sock2sockaddr_can()
libbpf: Fix BTF-defined map-in-map initialization on 32-bit host arches
bpf: sock_ops sk access may stomp registers when dst_reg = src_reg
bpf: sock_ops ctx access may stomp registers in corner case
tools/bpftool: Make skeleton code C++17-friendly by dropping typeof()
ASoC: q6routing: add dummy register read/write function
ASoC: q6afe-dai: mark all widgets registers as SND_SOC_NOPM
spi: stm32: fixes suspend/resume management
netfilter: nf_tables: nft_exthdr: the presence return value should be little-endian
ext4: check journal inode extents more carefully
ext4: don't allow overlapping system zones
drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()
ext4: fix potential negative array index in do_split()
fs/signalfd.c: fix inconsistent return codes for signalfd4
fat: fix fat_ra_init() for data clusters == 0
alpha: fix annotation of io{read,write}{16,32}be()
xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init
tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference
media: camss: fix memory leaks on error handling paths in probe
virtio_ring: Avoid loop when vq is broken in virtqueue_poll
scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases
cpufreq: intel_pstate: Fix cpuinfo_max_freq when MSR_TURBO_RATIO_LIMIT is 0
swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses
ceph: fix use-after-free for fsc->mdsc
jffs2: fix UAF problem
riscv: Fixup static_obj() fail
drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access
xfs: fix inode quota reservation checks
svcrdma: Fix another Receive buffer leak
m68knommu: fix overwriting of bits in ColdFire V3 cache control
MIPS: Fix unable to reserve memory for Crash kernel
Input: psmouse - add a newline when printing 'proto' by sysfs
f2fs: should avoid inode eviction in synchronous path
media: vpss: clean up resources in init
rtc: goldfish: Enable interrupt in set_alarm() when necessary
f2fs: fix to check page dirty status before writeback
media: coda: jpeg: add NULL check after kmalloc
media: budget-core: Improve exception handling in budget_register()
scsi: target: tcmu: Fix crash in tcmu_flush_dcache_range on ARM
scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices
drm/i915: Provide the perf pmu.module
drm/i915/pmu: Prefer drm_WARN_ON over WARN_ON
drm/amd/display: fix pow() crashing when given base 0
drm/amd/display: Fix DFPstate hang due to view port changed
drm/amd/display: Blank stream before destroying HDCP session
drm/amd/display: Fix EDID parsing after resume from suspend
drm/amd/display: Fix incorrect backlight register offset for DCN
drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal
drm: amdgpu: Use the correct size when allocating memory
mm/memory.c: skip spurious TLB flush for retried page fault
s390/pci: ignore stale configuration request event
s390/pci: fix PF/VF linking on hot plug
s390/pci: re-introduce zpci_remove_device()
s390/pci: fix zpci_bus_link_virtfn()
selftests: kvm: Use a shorter encoding to clear RAX
scsi: zfcp: Fix use-after-free in request timeout handlers
jbd2: add the missing unlock_buffer() in the error path of jbd2_write_superblock()
ext4: fix checking of directory entry validity for inline directories
ext4: do not block RWF_NOWAIT dio write on unallocated space
opp: Put opp table in dev_pm_opp_set_rate() if _set_opp_bw() fails
opp: Put opp table in dev_pm_opp_set_rate() for empty tables
opp: Enable resources again if they were disabled earlier
RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request
ASoC: amd: renoir: restore two more registers during resume
mm, page_alloc: fix core hung in free_pcppages_bulk()
mm: include CMA pages in lowmem_reserve at boot
squashfs: avoid bio_alloc() failure with 1Mbyte blocks
uprobes: __replace_page() avoid BUG in munlock_vma_page()
kernel/relay.c: fix memleak on destroy relay channel
romfs: fix uninitialized memory leak in romfs_dev_read()
mm/vunmap: add cond_resched() in vunmap_pmd_range
io_uring: find and cancel head link async work on files exit
spi: Prevent adding devices below an unregistering controller
can: j1939: socket: j1939_sk_bind(): make sure ml_priv is allocated
can: j1939: transport: j1939_session_tx_dat(): fix use-after-free read in j1939_tp_txtimer()
ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion
ALSA: hda/realtek: Add quirk for Samsung Galaxy Flex Book
ALSA: hda: avoid reset of sdo_limit
khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
drm/ast: Initialize DRAM type before posting GPU
drm/ast: Remove unused code paths for AST 1180
drm/panel-simple: Fix inverted V/H SYNC for Frida FRD350H54004 panel
drm/vgem: Replace opencoded version of drm_gem_dumb_map_offset()