Disco update: 4.19.18 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:

       4.19.18 upstream stable release
       from git://git.kernel.org/

Linux 4.19.18
ipmi: Don't initialize anything in the core until something uses it
ipmi:ssif: Fix handling of multi-part return messages
ipmi: Prevent use-after-free in deliver_response
ipmi: msghandler: Fix potential Spectre v1 vulnerabilities
ipmi: fix use-after-free of user->release_barrier.rda
Bluetooth: Fix unnecessary error message for HCI request completion
iwlwifi: mvm: Send LQ command as async when necessary
mm, proc: be more verbose about unstable VMA flags in /proc/<pid>/smaps
userfaultfd: clear flag if remap event not enabled
mm/swap: use nr_node_ids for avail_lists in swap_info_struct
mm/page-writeback.c: don't break integrity writeback on ->writepage() error
ocfs2: fix panic due to unrecovered local alloc
iomap: don't search past page end in iomap_is_partially_uptodate
scsi: megaraid: fix out-of-bound array accesses
scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown()
ath10k: fix peer stats null pointer dereference
scsi: smartpqi: correct lun reset issues
scsi: mpt3sas: fix memory ordering on 64bit writes
IB/usnic: Fix potential deadlock
sysfs: Disable lockdep for driver bind/unbind files
ALSA: bebob: fix model-id of unit for Apogee Ensemble
Bluetooth: btusb: Add support for Intel bluetooth device 8087:0029
dm: Check for device sector overflow if CONFIG_LBDAF is not set
clocksource/drivers/integrator-ap: Add missing of_node_put()
quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.
perf tools: Add missing open_memstream() prototype for systems lacking it
perf tools: Add missing sigqueue() prototype for systems lacking it
perf cs-etm: Correct packets swapping in cs_etm__flush()
dm snapshot: Fix excessive memory usage and workqueue stalls
tools lib subcmd: Don't add the kernel sources to the include path
perf stat: Avoid segfaults caused by negated options
dm kcopyd: Fix bug causing workqueue stalls
dm crypt: use u64 instead of sector_t to store iv_offset
x86/topology: Use total_cpus for max logical packages calculation
netfilter: ipt_CLUSTERIP: fix deadlock in netns exit routine
netfilter: ipt_CLUSTERIP: remove wrong WARN_ON_ONCE in netns exit routine
netfilter: ipt_CLUSTERIP: check MAC address when duplicate config is set
perf vendor events intel: Fix Load_Miss_Real_Latency on SKL/SKX
perf parse-events: Fix unchecked usage of strncpy()
perf svghelper: Fix unchecked usage of strncpy()
perf tests ARM: Disable breakpoint tests 32-bit
perf intel-pt: Fix error with config term "pt=0"
tty/serial: do not free trasnmit buffer page under port lock
btrfs: improve error handling of btrfs_add_link
btrfs: fix use-after-free due to race between replace start and cancel
btrfs: alloc_chunk: fix more DUP stripe size handling
btrfs: volumes: Make sure there is no overlap of dev extents at mount time
mmc: atmel-mci: do not assume idle after atmci_request_end
kconfig: fix memory leak when EOF is encountered in quotation
kconfig: fix file name and line number of warn_ignored_character()
bpf: relax verifier restriction on BPF_MOV | BPF_ALU
arm64: Fix minor issues with the dcache_by_line_op macro
clk: imx6q: reset exclusive gates on init
arm64: kasan: Increase stack size for KASAN_EXTRA
selftests: do not macro-expand failed assertion expressions
scsi: target/core: Make sure that target_wait_for_sess_cmds() waits long enough
scsi: target: use consistent left-aligned ASCII INQUIRY data
net: call sk_dst_reset when set SO_DONTROUTE
staging: erofs: fix use-after-free of on-stack `z_erofs_vle_unzip_io'
media: venus: core: Set dma maximum segment size
ASoC: use dma_ops of parent device for acp_audio_dma
media: firewire: Fix app_info parameter type in avc_ca{,_app}_info
powerpc/pseries/cpuidle: Fix preempt warning
powerpc/xmon: Fix invocation inside lock region
media: uvcvideo: Refactor teardown of uvc on USB disconnect
pstore/ram: Do not treat empty buffers as valid
clk: imx: make mux parent strings const
jffs2: Fix use of uninitialized delayed_work, lockdep breakage
efi/libstub: Disable some warnings for x86{,_64}
rxe: IB_WR_REG_MR does not capture MR's iova field
drm/amdgpu: Reorder uvd ring init before uvd resume
scsi: qedi: Check for session online before getting iSCSI TLV data.
ASoC: pcm3168a: Don't disable pcm3168a when CONFIG_PM defined
selinux: always allow mounting submounts
fpga: altera-cvp: fix probing for multiple FPGAs on the bus
usb: gadget: udc: renesas_usb3: add a safety connection way for forced_b_device
samples: bpf: fix: error handling regarding kprobe_events
clk: meson: meson8b: fix incorrect divider mapping in cpu_scale_table
drm/atomic-helper: Complete fake_commit->flip_done potentially earlier
arm64: perf: set suppress_bind_attrs flag to true
crypto: ecc - regularize scalar for scalar multiplication
MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur
x86/mce: Fix -Wmissing-prototypes warnings
ALSA: oxfw: add support for APOGEE duet FireWire
bpf: Allow narrow loads with offset > 0
serial: set suppress_bind_attrs flag only if builtin
writeback: don't decrement wb->refcnt if !wb->bdi
of: overlay: add missing of_node_put() after add new node to changeset
selftests/bpf: enable (uncomment) all tests in test_libbpf.sh
usb: typec: tcpm: Do not disconnect link for self powered devices
e1000e: allow non-monotonic SYSTIM readings
platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey
ixgbe: allow IPsec Tx offload in VEPA mode
drm/amdkfd: fix interrupt spin lock
drm/amd/display: Guard against null stream_state in set_crc_source
gpio: pl061: Move irq_chip definition inside struct pl061
netfilter: ipset: Allow matching on destination MAC address for mac and ipmac sets
net: clear skb->tstamp in bridge forwarding path
ipv6: Take rcu_read_lock in __inet6_bind for mapped addresses
qmi_wwan: add MTU default to qmap network interface
net, skbuff: do not prefer skb allocation fails early
net: dsa: mv88x6xxx: mv88e6390 errata
mlxsw: spectrum_switchdev: Set PVID correctly during VLAN deletion
mlxsw: spectrum: Disable lag port TX before removing it
ipv6: Consider sk_bound_dev_if when binding a socket to a v4 mapped address

The following patches from this stable update had already been applied:

r8169: Add support for new Realtek Ethernet