Disco update: 4.19.6 upstream stable release

[Seth Forshee]

    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:

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

Linux 4.19.6
media: ov5640: fix auto controls values when switching to manual mode
media: ov5640: fix wrong binning value in exposure calculation
media: ov5640: fix auto gain & exposure when changing mode
media: ov5640: fix exposure regression
media: ov5640: Fix timings setup code
media: ov5640: Re-work MIPI startup sequence
rcu: Make need_resched() respond to urgent RCU-QS needs
gfs2: Fix iomap buffer head reference counting bug
tty: wipe buffer if not echoing data
tty: wipe buffer.
include/linux/pfn_t.h: force '~' to be parsed as an unary operator
dax: Avoid losing wakeup in dax_lock_mapping_entry
mm, page_alloc: check for max order in hot path
tmpfs: make lseek(SEEK_DATA/SEK_HOLE) return ENXIO with a negative offset
mm, memory_hotplug: check zone_movable in has_unmovable_pages
z3fold: fix possible reclaim races
efi/arm: Revert deferred unmap of early memmap mapping
powerpc/numa: Suppress "VPHN is not supported" messages
NFSv4: Fix an Oops during delegation callbacks
kdb: Use strscpy with destination buffer size
drm/amdgpu: fix bug with IH ring setup
RISC-V: Silence some module warnings on 32-bit
riscv: add missing vdso_install target
SUNRPC: Fix a bogus get/put in generic_key_to_expire()
block: copy ioprio in __bio_clone_fast() and bounce
perf/x86/intel/uncore: Add more IMC PCI IDs for KabyLake and CoffeeLake CPUs
sched/fair: Fix cpu_util_wake() for 'execl' type workloads
powerpc/io: Fix the IO workarounds code to work with Radix
floppy: fix race condition in __floppy_read_block_0()
crypto: simd - correctly take reqsize of wrapped skcipher into account
rtc: pcf2127: fix a kmemleak caused in pcf2127_i2c_gather_write
rtc: cmos: Do not export alarm rtc_ops when we do not support alarms
cpufreq: imx6q: add return value check for voltage scale
KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE
scsi: hisi_sas: Remove set but not used variable 'dq_list'
scsi: lpfc: fix remoteport access
tools/testing/nvdimm: Fix the array size for dimm devices.
pinctrl: meson: fix meson8b ao pull register bits
pinctrl: meson: fix meson8 ao pull register bits
pinctrl: meson: fix gxl ao pull register bits
pinctrl: meson: fix gxbb ao pull register bits
pinctrl: meson: fix pinconf bias disable
fanotify: fix handling of events on child sub-directory
fsnotify: generalize handling of extra event flags
IB/hfi1: Eliminate races in the SDMA send error path
ACPICA: AML interpreter: add region addresses in global list during initialization
can: flexcan: remove not needed struct flexcan_priv::tx_mb and struct flexcan_priv::tx_mb_idx
can: flexcan: Always use last mailbox for TX
can: hi311x: Use level-triggered interrupt
can: raw: check for CAN FD capable netdev in raw_sendmsg()
can: flexcan: handle tx-complete CAN frames via rx-offload infrastructure
can: flexcan: use can_rx_offload_queue_sorted() for flexcan_irq_bus_*()
can: rx-offload: rename can_rx_offload_irq_queue_err_skb() to can_rx_offload_queue_tail()
can: rx-offload: introduce can_rx_offload_get_echo_skb() and can_rx_offload_queue_sorted() functions
can: dev: __can_get_echo_skb(): print error message, if trying to echo non existing skb
can: dev: __can_get_echo_skb(): Don't crash the kernel if can_priv::echo_skb is accessed out of bounds
can: dev: __can_get_echo_skb(): replace struct can_frame by canfd_frame to access frame length
can: dev: can_get_echo_skb(): factor out non sending code to __can_get_echo_skb()
can: flexcan: Unlock the MB unconditionally
drm/ast: Remove existing framebuffers before loading driver
drm/ast: fixed cursor may disappear sometimes
drm/ast: change resolution may cause screen blurred
drm/i915: Disable LP3 watermarks on all SNB machines
drm/amdgpu: Fix oops when pp_funcs->switch_power_profile is unset
drm/vc4: Set ->legacy_cursor_update to false when doing non-async updates
drm/amdgpu: Add missing firmware entry for HAINAN
drm/fb-helper: Blacklist writeback when adding connectors to fbdev
tcp: do not release socket ownership in tcp_close()
mm/memory.c: recheck page table entry with page table lock held
mm: don't warn about large allocations for slab
llc: do not use sk_eat_skb()
gfs2: Don't leave s_fs_info pointing to freed memory in init_sbd
sctp: clear the transport of some out_chunk_list chunks in sctp_assoc_rm_peer
bfs: add sanity check at bfs_fill_super()
Input: synaptics - avoid using uninitialized variable when probing
selinux: Add __GFP_NOWARN to allocation at str_read()
v9fs_dir_readdir: fix double-free on p9stat_read error
tools/power/cpupower: fix compilation with STATIC=true
opp: ti-opp-supply: Correct the supply in _get_optimal_vdd_voltage call
opp: ti-opp-supply: Dynamically update u_volt_min
brcmfmac: fix reporting support for 160 MHz channels
iwlwifi: mvm: don't use SAR Geo if basic SAR is not used
iwlwifi: mvm: fix regulatory domain update when the firmware starts
iwlwifi: mvm: support sta_statistics() even on older firmware
iwlwifi: fix wrong WGDS_WIFI_DATA_SIZE
gpio: don't free unallocated ida on gpiochip_add_data_with_key() error path
mmc: sdhci-pci: Workaround GLK firmware failing to restore the tuning value
mmc: sdhci-pci: Try "cd" for card-detect lookup before using NULL
Documentation/security-bugs: Postpone fix publication in exceptional cases
Documentation/security-bugs: Clarify treatment of embargoed information
MAINTAINERS: Add Sasha as a stable branch maintainer
ALSA: oss: Use kvzalloc() for local buffer allocations
usb: xhci: Prevent bus suspend if a port connect change or polling state is detected
xhci: Add quirk to workaround the errata seen on Cavium Thunder-X2 Soc
usb: xhci: fix timeout for transition from RExit to U0
usb: xhci: fix uninitialized completion when USB3 port got wrong status
xhci: Add check for invalid byte size error when UAS devices are connected.
xhci: handle port status events for removed USB3 hcd
xhci: Fix leaking USB3 shared_hcd at xhci removal
usb: dwc3: Fix NULL pointer exception in dwc3_pci_remove()
usb: dwc3: core: Clean up ULPI device
usb: dwc3: gadget: Properly check last unaligned/zero chain TRB
usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers
usb: core: Fix hub port connection events lost
efi/libstub: arm: support building with clang
HID: steam: remove input device when a hid client is running.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.19.0-12.13

---------------
linux (4.19.0-12.13) disco; urgency=medium

  * linux: 4.19.0-12.13 -proposed tracker (LP: #1813664)

  * kernel oops in bcache module (LP: #1793901)
    - SAUCE: bcache: never writeback a discard operation

  * Disco update: 4.19.18 upstream stable release (LP: #1813611)
    - ipv6: Consider sk_bound_dev_if when binding a socket to a v4 mapped address
    - mlxsw: spectrum: Disable lag port TX before removing it
    - mlxsw: spectrum_switchdev: Set PVID correctly during VLAN deletion
    - net: dsa: mv88x6xxx: mv88e6390 errata
    - net, skbuff: do not prefer skb allocation fails early
    - qmi_wwan: add MTU default to qmap network interface
    - ipv6: Take rcu_read_lock in __inet6_bind for mapped addresses
    - net: clear skb->tstamp in bridge forwarding path
    - netfilter: ipset: Allow matching on destination MAC address for mac and
      ipmac sets
    - gpio: pl061: Move irq_chip definition inside struct pl061
    - drm/amd/display: Guard against null stream_state in set_crc_source
    - drm/amdkfd: fix interrupt spin lock
    - ixgbe: allow IPsec Tx offload in VEPA mode
    - platform/x86: asus-wmi: Tell the EC the OS will handle the display off
      hotkey
    - e1000e: allow non-monotonic SYSTIM readings
    - usb: typec: tcpm: Do not disconnect link for self powered devices
    - selftests/bpf: enable (uncomment) all tests in test_libbpf.sh
    - of: overlay: add missing of_node_put() after add new node to changeset
    - writeback: don't decrement wb->refcnt if !wb->bdi
    - serial: set suppress_bind_attrs flag only if builtin
    - bpf: Allow narrow loads with offset > 0
    - ALSA: oxfw: add support for APOGEE duet FireWire
    - x86/mce: Fix -Wmissing-prototypes warnings
    - MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur
    - crypto: ecc - regularize scalar for scalar multiplication
    - arm64: perf: set suppress_bind_attrs flag to true
    - drm/atomic-helper: Complete fake_commit->flip_done potentially earlier
    - clk: meson: meson8b: fix incorrect divider mapping in cpu_scale_table
    - samples: bpf: fix: error handling regarding kprobe_events
    - usb: gadget: udc: renesas_usb3: add a safety connection way for
      forced_b_device
    - fpga: altera-cvp: fix probing for multiple FPGAs on the bus
    - selinux: always allow mounting submounts
    - ASoC: pcm3168a: Don't disable pcm3168a when CONFIG_PM defined
    - scsi: qedi: Check for session online before getting iSCSI TLV data.
    - drm/amdgpu: Reorder uvd ring init before uvd resume
    - rxe: IB_WR_REG_MR does not capture MR's iova field
    - efi/libstub: Disable some warnings for x86{,_64}
    - jffs2: Fix use of uninitialized delayed_work, lockdep breakage
    - clk: imx: make mux parent strings const
    - pstore/ram: Do not treat empty buffers as valid
    - media: uvcvideo: Refactor teardown of uvc on USB disconnect
    - powerpc/xmon: Fix invocation inside lock region
    - powerpc/pseries/cpuidle: Fix preempt warning
    - media: firewire: Fix app_info parameter type in avc_ca{,_app}_info
    - ASoC: use dma_ops of parent device for acp_audio_dma
    - media: ve...