Bionic update: upstream stable patchset 2019-11-13

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:

       upstream stable patchset 2019-11-13

  Ported from the following upstream stable releases:
   v4.14.152, v4.19.82

       from git://git.kernel.org/

zram: fix race between backing_dev_show and backing_dev_store
dm snapshot: use mutex instead of rw_semaphore
dm snapshot: introduce account_start_copy() and account_end_copy()
dm snapshot: rework COW throttling to fix deadlock
dm: Use kzalloc for all structs with embedded biosets/mempools
f2fs: flush quota blocks after turnning it off
scsi: lpfc: Fix a duplicate 0711 log message number.
sc16is7xx: Fix for "Unexpected interrupt: 8"
powerpc/powernv: hold device_hotplug_lock when calling memtrace_offline_pages()
HID: i2c-hid: add Direkt-Tek DTLAPY133-1 to descriptor override
x86/cpu: Add Atom Tremont (Jacobsville)
HID: i2c-hid: Add Odys Winbook 13 to descriptor override
clk: boston: unregister clks on failure in clk_boston_setup()
scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks
HID: Add ASUS T100CHI keyboard dock battery quirks
usb: handle warm-reset port requests on hub resume
rtc: pcf8523: set xtal load capacitance from DT
mlxsw: spectrum: Set LAG port collector only when active
ALSA: hda/realtek - Apply ALC294 hp init also for S4 resume
media: vimc: Remove unused but set variables
exec: load_script: Do not exec truncated interpreter path
PCI/PME: Fix possible use-after-free on remove
power: supply: max14656: fix potential use-after-free
iio: adc: meson_saradc: Fix memory allocation order
iio: fix center temperature of bmc150-accel-core
libsubcmd: Make _FORTIFY_SOURCE defines dependent on the feature
perf tests: Avoid raising SEGV using an obvious NULL dereference
perf map: Fix overlapped map handling
perf jevents: Fix period for Intel fixed counters
staging: rtl8188eu: fix null dereference when kzalloc fails
RDMA/hfi1: Prevent memory leak in sdma_init
RDMA/iwcm: Fix a lock inversion issue
HID: hyperv: Use in-place iterator API in the channel callback
nfs: Fix nfsi->nrequests count error on nfs_inode_remove_request
arm64: ftrace: Ensure synchronisation in PLT setup for Neoverse-N1 #1542419
tty: serial: owl: Fix the link time qualifier of 'owl_uart_exit()'
tty: n_hdlc: fix build on SPARC
gpio: max77620: Use correct unit for debounce times
fs: cifs: mute -Wunused-const-variable message
serial: mctrl_gpio: Check for NULL pointer
efi/cper: Fix endianness of PCIe class code
efi/x86: Do not clean dummy variable in kexec path
MIPS: include: Mark __cmpxchg as __always_inline
x86/xen: Return from panic notifier
ocfs2: clear zero in unaligned direct IO
fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry()
fs: ocfs2: fix a possible null-pointer dereference in ocfs2_write_end_nolock()
fs: ocfs2: fix a possible null-pointer dereference in ocfs2_info_scan_inode_alloc()
sched/vtime: Fix guest/system mis-accounting on task switch
perf/x86/amd: Change/fix NMI latency mitigation to use a timestamp
MIPS: include: Mark __xchg as __always_inline
MIPS: fw: sni: Fix out of bounds init of o32 stack
nbd: fix possible sysfs duplicate warning
NFSv4: Fix leak of clp->cl_acceptor string
s390/uaccess: avoid (false positive) compiler warnings
tracing: Initialize iter->seq after zeroing in tracing_read_pipe()
nbd: verify socket is supported during setup
USB: legousbtower: fix a signedness bug in tower_probe()
thunderbolt: Use 32-bit writes when writing ring producer/consumer
fuse: flush dirty data/metadata before non-truncate setattr
fuse: truncate pending writes on O_TRUNC
ALSA: bebob: Fix prototype of helper function to return negative value
UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments")
USB: gadget: Reject endpoints with 0 maxpacket value
usb-storage: Revert commit 747668dbc061 ("usb-storage: Set virt_boundary_mask to avoid SG overflows")
USB: ldusb: fix ring-buffer locking
USB: ldusb: fix control-message timeout
USB: serial: whiteheat: fix potential slab corruption
USB: serial: whiteheat: fix line-speed endianness
scsi: target: cxgbit: Fix cxgbit_fw4_ack()
HID: i2c-hid: add Trekstor Primebook C11B to descriptor override
HID: Fix assumption that devices have inputs
HID: fix error message in hid_open_report()
nl80211: fix validation of mesh path nexthop
s390/cmm: fix information leak in cmm_timeout_handler()
s390/idle: fix cpu idle time calculation
arm64: Ensure VM_WRITE|VM_SHARED ptes are clean by default
dmaengine: cppi41: Fix cppi41_dma_prep_slave_sg() when idle
llc: fix sk_buff leak in llc_sap_state_process()
llc: fix sk_buff leak in llc_conn_service()
rxrpc: Fix call ref leak
NFC: pn533: fix use-after-free and memleaks
bonding: fix potential NULL deref in bond_update_slave_arr
net: usb: sr9800: fix uninitialized local variable
sch_netem: fix rcu splat in netem_enqueue()
sctp: fix the issue that flags are ignored when using kernel_connect
sctp: not bind the socket in sctp_connect
xfs: Correctly invert xfs_buftarg LRU isolation logic
ALSA: timer: Simplify error path in snd_timer_open()
ALSA: timer: Fix mutex deadlock at releasing card
Revert "ALSA: hda: Flush interrupts on disabling"
Btrfs: fix inode cache block reserve leak on failure to allocate data space
Btrfs: fix memory leak due to concurrent append writes with fiemap
tools/power turbostat: fix goldmont C-state limit decoding
bcache: fix input overflow to writeback_rate_minimum
netfilter: ipset: Make invalid MAC address checks consistent
platform/x86: Add the VLV ISP PCI ID to atomisp2_pm
platform/x86: Fix config space access for intel_atomisp2_pm
NFSv4: Ensure that the state manager exits the loop on SIGKILL
ALSA: usb-audio: Cleanup DSD whitelist
arm64: Add MIDR encoding for HiSilicon Taishan CPUs
arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs
scsi: lpfc: Correct localport timeout duration error
ext4: disallow files with EXT4_JOURNAL_DATA_FL from EXT4_IOC_SWAP_BOOT
net: dsa: mv88e6xxx: Release lock while requesting IRQ
drm/amd/display: fix odm combine pipe reset
perf script brstackinsn: Fix recovery from LBR/binary mismatch
perf tools: Propagate get_cpuid() error
perf annotate: Propagate perf_env__arch() error
perf annotate: Fix the signedness of failure returns
arm64: armv8_deprecated: Checking return value for memory allocation
x86/cpu: Add Comet Lake to the Intel CPU models header
iio: imu: adis16400: release allocated memory on failure
ALSA: hda/realtek: Reduce the Headphone static noise on XPS 9350/9360
usb: xhci: fix __le32/__le64 accessors in debugfs code
dmaengine: qcom: bam_dma: Fix resource leak
NFS: Fix an RCU lock leak in nfs4_refresh_delegation_stateid()
batman-adv: Avoid free/alloc race when handling OGM buffer
powerpc/powernv: Fix CPU idle to be called with IRQs disabled
UBUNTU: upstream stable to v4.14.152, v4.19.82