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[Bug 1840043] Re: bcache: Performance degradation when querying priority_stats

 

This bug was fixed in the package linux - 5.3.0-22.24

---------------
linux (5.3.0-22.24) eoan; urgency=medium

  * [REGRESSION]  md/raid0: cannot assemble multi-zone RAID0 with default_layout
    setting (LP: #1849682)
    - Revert "md/raid0: avoid RAID0 data corruption due to layout confusion."

  * refcount underflow and type confusion in shiftfs (LP: #1850867) // CVE-2019-15793
    - SAUCE: shiftfs: Correct id translation for lower fs operations
    - SAUCE: shiftfs: prevent type confusion
    - SAUCE: shiftfs: Fix refcount underflow in btrfs ioctl handling

  * CVE-2018-12207
    - kvm: x86, powerpc: do not allow clearing largepages debugfs entry
    - SAUCE: KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is
      active
    - SAUCE: x86: Add ITLB_MULTIHIT bug infrastructure
    - SAUCE: kvm: mmu: ITLB_MULTIHIT mitigation
    - SAUCE: kvm: Add helper function for creating VM worker threads
    - SAUCE: kvm: x86: mmu: Recovery of shattered NX large pages
    - SAUCE: cpu/speculation: Uninline and export CPU mitigations helpers
    - SAUCE: kvm: x86: mmu: Apply global mitigations knob to ITLB_MULTIHIT

  * CVE-2019-11135
    - x86/msr: Add the IA32_TSX_CTRL MSR
    - x86/cpu: Add a helper function x86_read_arch_cap_msr()
    - x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
    - x86/speculation/taa: Add mitigation for TSX Async Abort
    - x86/speculation/taa: Add sysfs reporting for TSX Async Abort
    - kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
    - x86/tsx: Add "auto" option to the tsx= cmdline parameter
    - x86/speculation/taa: Add documentation for TSX Async Abort
    - x86/tsx: Add config options to set tsx=on|off|auto
    - [Config] Disable TSX by default when possible

  * CVE-2019-0154
    - SAUCE: drm/i915: Lower RM timeout to avoid DSI hard hangs
    - SAUCE: drm/i915/gen8+: Add RC6 CTX corruption WA

  * CVE-2019-0155
    - SAUCE: drm/i915: Rename gen7 cmdparser tables
    - SAUCE: drm/i915: Disable Secure Batches for gen6+
    - SAUCE: drm/i915: Remove Master tables from cmdparser
    - SAUCE: drm/i915: Add support for mandatory cmdparsing
    - SAUCE: drm/i915: Support ro ppgtt mapped cmdparser shadow buffers
    - SAUCE: drm/i915: Allow parsing of unsized batches
    - SAUCE: drm/i915: Add gen9 BCS cmdparsing
    - SAUCE: drm/i915/cmdparser: Use explicit goto for error paths
    - SAUCE: drm/i915/cmdparser: Add support for backward jumps
    - SAUCE: drm/i915/cmdparser: Ignore Length operands during command matching

linux (5.3.0-21.22) eoan; urgency=medium

  * eoan/linux: 5.3.0-21.22 -proposed tracker (LP: #1850486)

  * Fix signing of staging modules in eoan (LP: #1850234)
    - [Packaging] Leave unsigned modules unsigned after adding .gnu_debuglink

linux (5.3.0-20.21) eoan; urgency=medium

  * eoan/linux: 5.3.0-20.21 -proposed tracker (LP: #1849064)

  * eoan: alsa/sof: Enable SOF_HDA link and codec (LP: #1848490)
    - [Config] Enable SOF_HDA link and codec

  * Eoan update: 5.3.7 upstream stable release (LP: #1848750)
    - panic: ensure preemption is disabled during panic()
    - [Config] updateconfigs for USB_RIO500
    - USB: rio500: Remove Rio 500 kernel driver
    - USB: yurex: Don't retry on unexpected errors
    - USB: yurex: fix NULL-derefs on disconnect
    - USB: usb-skeleton: fix runtime PM after driver unbind
    - USB: usb-skeleton: fix NULL-deref on disconnect
    - xhci: Fix false warning message about wrong bounce buffer write length
    - xhci: Prevent device initiated U1/U2 link pm if exit latency is too long
    - xhci: Check all endpoints for LPM timeout
    - xhci: Fix USB 3.1 capability detection on early xHCI 1.1 spec based hosts
    - usb: xhci: wait for CNR controller not ready bit in xhci resume
    - xhci: Prevent deadlock when xhci adapter breaks during init
    - xhci: Fix NULL pointer dereference in xhci_clear_tt_buffer_complete()
    - USB: adutux: fix use-after-free on disconnect
    - USB: adutux: fix NULL-derefs on disconnect
    - USB: adutux: fix use-after-free on release
    - USB: iowarrior: fix use-after-free on disconnect
    - USB: iowarrior: fix use-after-free on release
    - USB: iowarrior: fix use-after-free after driver unbind
    - USB: usblp: fix runtime PM after driver unbind
    - USB: chaoskey: fix use-after-free on release
    - USB: ldusb: fix NULL-derefs on driver unbind
    - serial: uartlite: fix exit path null pointer
    - serial: uartps: Fix uartps_major handling
    - USB: serial: keyspan: fix NULL-derefs on open() and write()
    - USB: serial: ftdi_sio: add device IDs for Sienna and Echelon PL-20
    - USB: serial: option: add Telit FN980 compositions
    - USB: serial: option: add support for Cinterion CLS8 devices
    - USB: serial: fix runtime PM after driver unbind
    - USB: usblcd: fix I/O after disconnect
    - USB: microtek: fix info-leak at probe
    - USB: dummy-hcd: fix power budget for SuperSpeed mode
    - usb: renesas_usbhs: gadget: Do not discard queues in
      usb_ep_set_{halt,wedge}()
    - usb: renesas_usbhs: gadget: Fix usb_ep_set_{halt,wedge}() behavior
    - usb: typec: tcpm: usb: typec: tcpm: Fix a signedness bug in
      tcpm_fw_get_caps()
    - usb: typec: ucsi: ccg: Remove run_isr flag
    - usb: typec: ucsi: displayport: Fix for the mode entering routine
    - USB: legousbtower: fix slab info leak at probe
    - USB: legousbtower: fix deadlock on disconnect
    - USB: legousbtower: fix potential NULL-deref on disconnect
    - USB: legousbtower: fix open after failed reset request
    - USB: legousbtower: fix use-after-free on release
    - mei: me: add comet point (lake) LP device ids
    - mei: avoid FW version request on Ibex Peak and earlier
    - gpio: eic: sprd: Fix the incorrect EIC offset when toggling
    - staging/fbtft: Depend on OF
    - staging: bcm2835-audio: Fix draining behavior regression
    - Staging: fbtft: fix memory leak in fbtft_framebuffer_alloc
    - staging: rtl8188eu: fix HighestRate check in odm_ARFBRefresh_8188E()
    - staging: vt6655: Fix memory leak in vt6655_probe
    - iio: adc: hx711: fix bug in sampling of data
    - iio: adc: ad799x: fix probe error handling
    - iio: adc: axp288: Override TS pin bias current for some models
    - iio: adc: stm32-adc: move registers definitions
    - iio: adc: stm32-adc: fix a race when using several adcs with dma and irq
    - iio: light: opt3001: fix mutex unlock race
    - iio: light: add missing vcnl4040 of_compatible
    - iio: accel: adxl372: Fix/remove limitation for FIFO samples
    - iio: accel: adxl372: Fix push to buffers lost samples
    - iio: accel: adxl372: Perform a reset at start up
    - efivar/ssdt: Don't iterate over EFI vars if no SSDT override was specified
    - perf llvm: Don't access out-of-scope array
    - perf inject jit: Fix JIT_CODE_MOVE filename
    - drm/i915: Perform GGTT restore much earlier during resume
    - selinux: fix context string corruption in convert_context()
    - CIFS: Gracefully handle QueryInfo errors during open
    - CIFS: Force revalidate inode when dentry is stale
    - CIFS: Force reval dentry if LOOKUP_REVAL flag is set
    - cifs: use cifsInodeInfo->open_file_lock while iterating to avoid a panic
    - kernel/sysctl.c: do not override max_threads provided by userspace
    - mm/z3fold.c: claim page in the beginning of free
    - mm/page_alloc.c: fix a crash in free_pages_prepare()
    - mm/vmpressure.c: fix a signedness bug in vmpressure_register_event()
    - IB/core: Fix wrong iterating on ports
    - firmware: google: increment VPD key_len properly
    - gpio: fix getting nonexclusive gpiods from DT
    - gpiolib: don't clear FLAG_IS_OUT when emulating open-drain/open-source
    - btrfs: relocation: fix use-after-free on dead relocation roots
    - btrfs: allocate new inode in NOFS context
    - btrfs: fix balance convert to single on 32-bit host CPUs
    - Btrfs: fix memory leak due to concurrent append writes with fiemap
    - btrfs: fix incorrect updating of log root tree
    - btrfs: fix uninitialized ret in ref-verify
    - NFS: Fix O_DIRECT accounting of number of bytes read/written
    - MIPS: Disable Loongson MMI instructions for kernel build
    - MIPS: elf_hwcap: Export userspace ASEs
    - RDMA/vmw_pvrdma: Free SRQ only once
    - ACPI/PPTT: Add support for ACPI 6.3 thread flag
    - arm64: topology: Use PPTT to determine if PE is a thread
    - iio: light: fix vcnl4000 devicetree hooks
    - Fix the locking in dcache_readdir() and friends
    - drm/i915: Bump skl+ max plane width to 5k for linear/x-tiled
    - drm/i915: Whitelist COMMON_SLICE_CHICKEN2
    - drm/i915: Mark contents as dirty on a write fault
    - drm/msm: Use the correct dma_sync calls harder
    - media: stkwebcam: fix runtime PM after driver unbind
    - arm64/sve: Fix wrong free for task->thread.sve_state
    - tracing/hwlat: Report total time spent in all NMIs during the sample
    - tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency
    - ftrace: Get a reference counter for the trace_array on filter files
    - tracing: Get trace_array reference for available_tracers files
    - hwmon: Fix HWMON_P_MIN_ALARM mask
    - mtd: rawnand: au1550nd: Fix au_read_buf16() prototype
    - x86/asm: Fix MWAITX C-state hint value
    - io_uring: only flush workqueues on fileset removal
    - efi/tpm: Fix sanity check of unsigned tbl_size being less than zero
    - Linux 5.3.7
    - [Packaging] Remove now un-used modules for amd64
    - [Config] Remove Rio500
    - [Config] Remove deselected modules

  * Eoan update: v5.3.5 upstream stable release (LP: #1848047)
    - drm/vkms: Fix crc worker races
    - drm/mcde: Fix uninitialized variable
    - drm/bridge: tc358767: Increase AUX transfer length limit
    - drm/vkms: Avoid assigning 0 for possible_crtc
    - drm/panel: simple: fix AUO g185han01 horizontal blanking
    - drm/amd/display: add monitor patch to add T7 delay
    - drm/amd/display: Power-gate all DSCs at driver init time
    - drm/amd/display: fix not calling ppsmu to trigger PME
    - drm/amd/display: Clear FEC_READY shadow register if DPCD write fails
    - drm/amd/display: Copy GSL groups when committing a new context
    - video: ssd1307fb: Start page range at page_offset
    - drm/tinydrm/Kconfig: drivers: Select BACKLIGHT_CLASS_DEVICE
    - drm/stm: attach gem fence to atomic state
    - drm/bridge: sii902x: fix missing reference to mclk clock
    - drm/panel: check failure cases in the probe func
    - drm/rockchip: Check for fast link training before enabling psr
    - drm/amdgpu: Fix hard hang for S/G display BOs.
    - drm/amd/display: Use proper enum conversion functions
    - drm/radeon: Fix EEH during kexec
    - gpu: drm: radeon: Fix a possible null-pointer dereference in
      radeon_connector_set_property()
    - clk: imx8mq: Mark AHB clock as critical
    - PCI: rpaphp: Avoid a sometimes-uninitialized warning
    - pinctrl: stmfx: update pinconf settings
    - ipmi_si: Only schedule continuously in the thread in maintenance mode
    - clk: qoriq: Fix -Wunused-const-variable
    - clk: ingenic/jz4740: Fix "pll half" divider not read/written properly
    - clk: sunxi-ng: v3s: add missing clock slices for MMC2 module clocks
    - drm/amd/display: fix issue where 252-255 values are clipped
    - drm/amd/display: Fix frames_to_insert math
    - drm/amd/display: reprogram VM config when system resume
    - drm/amd/display: Register VUPDATE_NO_LOCK interrupts for DCN2
    - powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA
      window
    - clk: actions: Don't reference clk_init_data after registration
    - clk: sirf: Don't reference clk_init_data after registration
    - clk: meson: axg-audio: Don't reference clk_init_data after registration
    - clk: sprd: Don't reference clk_init_data after registration
    - clk: zx296718: Don't reference clk_init_data after registration
    - clk: sunxi: Don't call clk_hw_get_name() on a hw that isn't registered
    - powerpc/xmon: Check for HV mode when dumping XIVE info from OPAL
    - powerpc/rtas: use device model APIs and serialization during LPM
    - powerpc/ptdump: fix walk_pagetables() address mismatch
    - powerpc/futex: Fix warning: 'oldval' may be used uninitialized in this
      function
    - powerpc/64s/radix: Fix memory hotplug section page table creation
    - powerpc/pseries/mobility: use cond_resched when updating device tree
    - powerpc/perf: fix imc allocation failure handling
    - pinctrl: tegra: Fix write barrier placement in pmx_writel
    - powerpc/eeh: Clear stale EEH_DEV_NO_HANDLER flag
    - vfio_pci: Restore original state on release
    - drm/amdgpu/sdma5: fix number of sdma5 trap irq types for navi1x
    - drm/nouveau/kms/tu102-: disable input lut when input is already FP16
    - drm/nouveau/volt: Fix for some cards having 0 maximum voltage
    - pinctrl: amd: disable spurious-firing GPIO IRQs
    - clk: renesas: mstp: Set GENPD_FLAG_ALWAYS_ON for clock domain
    - clk: renesas: cpg-mssr: Set GENPD_FLAG_ALWAYS_ON for clock domain
    - drm/amd/display: support spdif
    - drm/amd/powerpaly: fix navi series custom peak level value error
    - drm/amd/display: fix MPO HUBP underflow with Scatter Gather
    - drm/amd/display: fix trigger not generated for freesync
    - selftests/powerpc: Retry on host facility unavailable
    - kbuild: Do not enable -Wimplicit-fallthrough for clang for now
    - drm/amdgpu/si: fix ASIC tests
    - powerpc/64s/exception: machine check use correct cfar for late handler
    - pstore: fs superblock limits
    - powerpc/eeh: Clean up EEH PEs after recovery finishes
    - clk: qcom: gcc-sdm845: Use floor ops for sdcc clks
    - powerpc/pseries: correctly track irq state in default idle
    - pinctrl: meson-gxbb: Fix wrong pinning definition for uart_c
    - mailbox: mediatek: cmdq: clear the event in cmdq initial flow
    - ARM: dts: dir685: Drop spi-cpol from the display
    - arm64: fix unreachable code issue with cmpxchg
    - clk: at91: select parent if main oscillator or bypass is enabled
    - clk: imx: pll14xx: avoid glitch when set rate
    - clk: imx: clk-pll14xx: unbypass PLL by default
    - clk: Make clk_bulk_get_all() return a valid "id"
    - powerpc: dump kernel log before carrying out fadump or kdump
    - mbox: qcom: add APCS child device for QCS404
    - clk: sprd: add missing kfree
    - scsi: core: Reduce memory required for SCSI logging
    - dma-buf/sw_sync: Synchronize signal vs syncpt free
    - f2fs: fix to drop meta/node pages during umount
    - ext4: fix potential use after free after remounting with noblock_validity
    - MIPS: Ingenic: Disable broken BTB lookup optimization.
    - MIPS: Don't use bc_false uninitialized in __mm_isBranchInstr
    - MIPS: tlbex: Explicitly cast _PAGE_NO_EXEC to a boolean
    - i2c-cht-wc: Fix lockdep warning
    - PCI: tegra: Fix OF node reference leak
    - HID: wacom: Fix several minor compiler warnings
    - rtc: bd70528: fix driver dependencies
    - mips/atomic: Fix loongson_llsc_mb() wreckage
    - PCI: pci-hyperv: Fix build errors on non-SYSFS config
    - PCI: layerscape: Add the bar_fixed_64bit property to the endpoint driver
    - livepatch: Nullify obj->mod in klp_module_coming()'s error path
    - mips/atomic: Fix smp_mb__{before,after}_atomic()
    - ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as
      writes
    - soundwire: intel: fix channel number reported by hardware
    - PCI: mobiveil: Fix the CPU base address setup in inbound window
    - ARM: 8875/1: Kconfig: default to AEABI w/ Clang
    - rtc: snvs: fix possible race condition
    - rtc: pcf85363/pcf85263: fix regmap error in set_time
    - power: supply: register HWMON devices with valid names
    - selinux: fix residual uses of current_security() for the SELinux blob
    - PCI: Add pci_info_ratelimited() to ratelimit PCI separately
    - HID: apple: Fix stuck function keys when using FN
    - PCI: rockchip: Propagate errors for optional regulators
    - PCI: histb: Propagate errors for optional regulators
    - PCI: imx6: Propagate errors for optional regulators
    - PCI: exynos: Propagate errors for optional PHYs
    - security: smack: Fix possible null-pointer dereferences in
      smack_socket_sock_rcv_skb()
    - PCI: Use static const struct, not const static struct
    - ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
    - ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned
      address
    - i2c: tegra: Move suspend handling to NOIRQ phase
    - block, bfq: push up injection only after setting service time
    - fat: work around race with userspace's read via blockdev while mounting
    - pktcdvd: remove warning on attempting to register non-passthrough dev
    - hypfs: Fix error number left in struct pointer member
    - tools/power/x86/intel-speed-select: Fix high priority core mask over count
    - crypto: hisilicon - Fix double free in sec_free_hw_sgl()
    - mm: add dummy can_do_mlock() helper
    - kbuild: clean compressed initramfs image
    - ocfs2: wait for recovering done after direct unlock request
    - kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K
    - arm64: consider stack randomization for mmap base only when necessary
    - mips: properly account for stack randomization and stack guard gap
    - arm: properly account for stack randomization and stack guard gap
    - arm: use STACK_TOP when computing mmap base address
    - cxgb4:Fix out-of-bounds MSI-X info array access
    - erspan: remove the incorrect mtu limit for erspan
    - hso: fix NULL-deref on tty open
    - ipv6: drop incoming packets having a v4mapped source address
    - ipv6: Handle missing host route in __ipv6_ifa_notify
    - net: ipv4: avoid mixed n_redirects and rate_tokens usage
    - net: qlogic: Fix memory leak in ql_alloc_large_buffers
    - net: sched: taprio: Fix potential integer overflow in
      taprio_set_picos_per_byte
    - net: Unpublish sk from sk_reuseport_cb before call_rcu
    - nfc: fix memory leak in llcp_sock_bind()
    - qmi_wwan: add support for Cinterion CLS8 devices
    - rxrpc: Fix rxrpc_recvmsg tracepoint
    - sch_cbq: validate TCA_CBQ_WRROPT to avoid crash
    - sch_dsmark: fix potential NULL deref in dsmark_init()
    - tipc: fix unlimited bundling of small messages
    - udp: fix gso_segs calculations
    - vsock: Fix a lockdep warning in __vsock_release()
    - net: dsa: rtl8366: Check VLAN ID and not ports
    - tcp: adjust rto_base in retransmits_timed_out()
    - udp: only do GSO if # of segs > 1
    - net/rds: Fix error handling in rds_ib_add_one()
    - net: dsa: sja1105: Initialize the meta_lock
    - xen-netfront: do not use ~0U as error return value for xennet_fill_frags()
    - net: dsa: sja1105: Fix sleeping while atomic in .port_hwtstamp_set
    - ptp_qoriq: Initialize the registers' spinlock before calling
      ptp_qoriq_settime
    - net: dsa: sja1105: Ensure PTP time for rxtstamp reconstruction is not in the
      past
    - net: dsa: sja1105: Prevent leaking memory
    - net: socionext: netsec: always grab descriptor lock
    - net: sched: cbs: Avoid division by zero when calculating the port rate
    - net: sched: taprio: Avoid division by zero on invalid link speed
    - Smack: Don't ignore other bprm->unsafe flags if LSM_UNSAFE_PTRACE is set
    - smack: use GFP_NOFS while holding inode_smack::smk_lock
    - dm raid: fix updating of max_discard_sectors limit
    - dm zoned: fix invalid memory access
    - NFC: fix attrs checks in netlink interface
    - kexec: bail out upon SIGKILL when allocating memory.
    - KVM: hyperv: Fix Direct Synthetic timers assert an interrupt w/o
      lapic_in_kernel
    - 9p/cache.c: Fix memory leak in v9fs_cache_session_get_cookie
    - vfs: set fs_context::user_ns for reconfigure
    - Linux 5.3.5
    - [Config] add rtc-bd70528 to modules.ignore
    - [Packaging] remove rtc-bd70528 from modules

  * Suspend stopped working from 4.4.0-157 onwards (LP: #1844021) // Eoan
    update: 5.3.7 upstream stable release (LP: #1848750)
    - xhci: Increase STS_SAVE timeout in xhci_suspend()

  * CVE-2019-17666
    - SAUCE: rtlwifi: Fix potential overflow on P2P code

  * md raid0/linear doesn't show error state if an array member is removed and
    allows successful writes (LP: #1847773)
    - md raid0/linear: Mark array as 'broken' and fail BIOs if a member is gone

  * linux won't build when new virtualbox version is present on the archive
    (LP: #1848788)
    - [Packaging]: download virtualbox from sources

  * seccomp: add SECCOMP_USER_NOTIF_FLAG_CONTINUE    (LP: #1847744)
    - SAUCE: seccomp: add SECCOMP_USER_NOTIF_FLAG_CONTINUE
    - SAUCE: seccomp: test SECCOMP_USER_NOTIF_FLAG_CONTINUE

  * Change Config Option CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE for s390x from yes
    to no (LP: #1848492)
    - [Config] Change Config Option CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE for s390x
      from yes to no

  * shiftfs: rework how shiftfs opens files (LP: #1846265)
    - SAUCE: shiftfs: rework how shiftfs opens files

  * fdatasync performance regression on 5.0 kernels (LP: #1847641)
    - blk-wbt: fix performance regression in wbt scale_up/scale_down

  * bcache: Performance degradation when querying priority_stats (LP: #1840043)
    - bcache: add cond_resched() in __bch_cache_cmp()

  * drm/i915: Fix the issue of "azx_get_response timeout" for hdmi audio on ICL
    platforms (LP: #1847192)
    - SAUCE: drm/i915: Fix audio power up sequence for gen10+ display
    - SAUCE: drm/i915: extend audio CDCLK>=2*BCLK constraint to more platforms

  * Add installer support for iwlmvm adapters (LP: #1848236)
    - d-i: Add iwlmvm to nic-modules

  * Eoan update: v5.3.6 upstream stable release (LP: #1848039)
    - s390/process: avoid potential reading of freed stack
    - KVM: s390: Test for bad access register and size at the start of S390_MEM_OP
    - s390/topology: avoid firing events before kobjs are created
    - s390/cio: avoid calling strlen on null pointer
    - s390/cio: exclude subchannels with no parent from pseudo check
    - KVM: s390: fix __insn32_query() inline assembly
    - KVM: PPC: Book3S: Enable XIVE native capability only if OPAL has required
      functions
    - KVM: PPC: Book3S HV: XIVE: Free escalation interrupts before disabling the
      VP
    - KVM: PPC: Book3S HV: Don't push XIVE context when not using XIVE device
    - KVM: PPC: Book3S HV: Fix race in re-enabling XIVE escalation interrupts
    - KVM: PPC: Book3S HV: Check for MMU ready on piggybacked virtual cores
    - KVM: PPC: Book3S HV: Don't lose pending doorbell request on migration on P9
    - KVM: X86: Fix userspace set invalid CR4
    - nbd: fix max number of supported devs
    - PM / devfreq: tegra: Fix kHz to Hz conversion
    - ASoC: Define a set of DAPM pre/post-up events
    - ASoC: sgtl5000: Improve VAG power and mute control
    - powerpc/xive: Implement get_irqchip_state method for XIVE to fix shutdown
      race
    - powerpc/mce: Fix MCE handling for huge pages
    - powerpc/mce: Schedule work from irq_work
    - powerpc/603: Fix handling of the DIRTY flag
    - powerpc/32s: Fix boot failure with DEBUG_PAGEALLOC without KASAN.
    - powerpc/ptdump: Fix addresses display on PPC32
    - powerpc/powernv: Restrict OPAL symbol map to only be readable by root
    - powerpc/pseries: Fix cpu_hotplug_lock acquisition in resize_hpt()
    - powerpc/powernv/ioda: Fix race in TCE level allocation
    - powerpc/kasan: Fix parallel loading of modules.
    - powerpc/kasan: Fix shadow area set up for modules.
    - powerpc/book3s64/mm: Don't do tlbie fixup for some hardware revisions
    - powerpc/book3s64/radix: Rename CPU_FTR_P9_TLBIE_BUG feature flag
    - powerpc/mm: Add a helper to select PAGE_KERNEL_RO or PAGE_READONLY
    - powerpc/mm: Fix an Oops in kasan_mmu_init()
    - powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9
    - can: mcp251x: mcp251x_hw_reset(): allow more time after a reset
    - tools lib traceevent: Fix "robust" test of do_generate_dynamic_list_file
    - tools lib traceevent: Do not free tep->cmdlines in add_new_comm() on failure
    - crypto: qat - Silence smp_processor_id() warning
    - crypto: skcipher - Unmap pages after an external error
    - crypto: cavium/zip - Add missing single_release()
    - crypto: caam/qi - fix error handling in ERN handler
    - crypto: caam - fix concurrency issue in givencrypt descriptor
    - crypto: ccree - account for TEE not ready to report
    - crypto: ccree - use the full crypt length value
    - MIPS: Treat Loongson Extensions as ASEs
    - power: supply: sbs-battery: use correct flags field
    - power: supply: sbs-battery: only return health when battery present
    - tracing: Make sure variable reference alias has correct var_ref_idx
    - usercopy: Avoid HIGHMEM pfn warning
    - timer: Read jiffies once when forwarding base clk
    - PCI: vmd: Fix config addressing when using bus offsets
    - PCI: hv: Avoid use of hv_pci_dev->pci_slot after freeing it
    - PCI: vmd: Fix shadow offsets to reflect spec changes
    - selftests/tpm2: Add the missing TEST_FILES assignment
    - selftests: pidfd: Fix undefined reference to pthread_create()
    - watchdog: imx2_wdt: fix min() calculation in imx2_wdt_set_timeout
    - perf tools: Fix segfault in cpu_cache_level__read()
    - perf stat: Fix a segmentation fault when using repeat forever
    - drm/i915/dp: Fix dsc bpp calculations, v5.
    - drm/atomic: Reject FLIP_ASYNC unconditionally
    - drm/atomic: Take the atomic toys away from X
    - drm: mali-dp: Mark expected switch fall-through
    - drm/omap: fix max fclk divider for omap36xx
    - drm/msm/dsi: Fix return value check for clk_get_parent
    - drm/nouveau/kms/nv50-: Don't create MSTMs for eDP connectors
    - drm/amd/powerplay: change metrics update period from 1ms to 100ms
    - drm/i915/gvt: update vgpu workload head pointer correctly
    - drm/i915: to make vgpu ppgtt notificaiton as atomic operation
    - mac80211: keep BHs disabled while calling drv_tx_wake_queue()
    - mmc: tegra: Implement ->set_dma_mask()
    - mmc: sdhci: improve ADMA error reporting
    - mmc: sdhci-of-esdhc: set DMA snooping based on DMA coherence
    - mmc: sdhci: Let drivers define their DMA mask
    - Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"
    - libnvdimm/altmap: Track namespace boundaries in altmap
    - DTS: ARM: gta04: introduce legacy spi-cs-high to make display work again
    - xen/balloon: Set pages PageOffline() in balloon_add_region()
    - xen/xenbus: fix self-deadlock after killing user process
    - ieee802154: atusb: fix use-after-free at disconnect
    - nl80211: validate beacon head
    - cfg80211: validate SSID/MBSSID element ordering assumption
    - cfg80211: initialize on-stack chandefs
    - drivers: thermal: qcom: tsens: Fix memory leak from qfprom read
    - ima: always return negative code for error
    - ima: fix freeing ongoing ahash_request
    - fs: nfs: Fix possible null-pointer dereferences in encode_attrs()
    - xprtrdma: Toggle XPRT_CONGESTED in xprtrdma's slot methods
    - xprtrdma: Send Queue size grows after a reconnect
    - 9p: Transport error uninitialized
    - 9p: avoid attaching writeback_fid on mmap with type PRIVATE
    - xen/pci: reserve MCFG areas earlier
    - fuse: fix request limit
    - ceph: fix directories inode i_blkbits initialization
    - ceph: fetch cap_gen under spinlock in ceph_add_cap
    - ceph: reconnect connection if session hang in opening state
    - SUNRPC: RPC level errors should always set task->tk_rpc_status
    - watchdog: aspeed: Add support for AST2600
    - netfilter: nf_tables: allow lookups in dynamic sets
    - drm/amdgpu: Fix KFD-related kernel oops on Hawaii
    - drm/amdgpu: Check for valid number of registers to read
    - perf probe: Fix to clear tev->nargs in clear_probe_trace_event()
    - pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors
    - SUNRPC: Don't try to parse incomplete RPC messages
    - pwm: stm32-lp: Add check in case requested period cannot be achieved
    - selftests/seccomp: fix build on older kernels
    - x86/purgatory: Disable the stackleak GCC plugin for the purgatory
    - ntb: point to right memory window index
    - thermal: Fix use-after-free when unregistering thermal zone device
    - thermal_hwmon: Sanitize thermal_zone type
    - iommu/amd: Fix downgrading default page-sizes in alloc_pte()
    - libnvdimm/region: Initialize bad block for volatile namespaces
    - libnvdimm: Fix endian conversion issues
    - fuse: fix memleak in cuse_channel_open
    - libnvdimm/nfit_test: Fix acpi_handle redefinition
    - sched/membarrier: Call sync_core only before usermode for same mm
    - sched/membarrier: Fix private expedited registration check
    - sched/core: Fix migration to invalid CPU in __set_cpus_allowed_ptr()
    - perf build: Add detection of java-11-openjdk-devel package
    - include/trace/events/writeback.h: fix -Wstringop-truncation warnings
    - selftests/bpf: adjust strobemeta loop to satisfy latest clang
    - kernel/elfcore.c: include proper prototypes
    - libbpf: fix false uninitialized variable warning
    - blk-mq: move lockdep_assert_held() into elevator_exit
    - bpf: Fix bpf_event_output re-entry issue
    - net: dsa: microchip: Always set regmap stride to 1
    - perf unwind: Fix libunwind build failure on i386 systems
    - mlxsw: spectrum_flower: Fail in case user specifies multiple mirror actions
    - nfp: abm: fix memory leak in nfp_abm_u32_knode_replace
    - drm/radeon: Bail earlier when radeon.cik_/si_support=0 is passed
    - Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
    - KVM: nVMX: Fix consistency check on injected exception error code
    - tick: broadcast-hrtimer: Fix a race in bc_set_next
    - perf stat: Reset previous counts on repeat with interval
    - riscv: Avoid interrupts being erroneously enabled in handle_exception()
    - vfs: Fix EOVERFLOW testing in put_compat_statfs64
    - coresight: etm4x: Use explicit barriers on enable/disable
    - staging: erofs: fix an error handling in erofs_readdir()
    - staging: erofs: some compressed cluster should be submitted for corrupted
      images
    - staging: erofs: add two missing erofs_workgroup_put for corrupted images
    - staging: erofs: avoid endless loop of invalid lookback distance 0
    - staging: erofs: detect potential multiref due to corrupted images
    - libnvdimm: prevent nvdimm from requesting key when security is disabled
    - Linux 5.3.6

  * Eoan update: v5.3.4 upstream stable release (LP: #1848046)
    - arcnet: provide a buffer big enough to actually receive packets
    - cdc_ncm: fix divide-by-zero caused by invalid wMaxPacketSize
    - macsec: drop skb sk before calling gro_cells_receive
    - net/phy: fix DP83865 10 Mbps HDX loopback disable function
    - net: qrtr: Stop rx_worker before freeing node
    - net/sched: act_sample: don't push mac header on ip6gre ingress
    - net_sched: add max len check for TCA_KIND
    - net: stmmac: Fix page pool size
    - nfp: flower: fix memory leak in nfp_flower_spawn_vnic_reprs
    - nfp: flower: prevent memory leak in nfp_flower_spawn_phy_reprs
    - openvswitch: change type of UPCALL_PID attribute to NLA_UNSPEC
    - ppp: Fix memory leak in ppp_write
    - sch_netem: fix a divide by zero in tabledist()
    - selftests: Update fib_tests to handle missing ping6
    - skge: fix checksum byte order
    - tcp_bbr: fix quantization code to not raise cwnd if not probing bandwidth
    - usbnet: ignore endpoints with invalid wMaxPacketSize
    - usbnet: sanity checking of packet sizes and device mtu
    - net/rds: Check laddr_check before calling it
    - net/mlx5e: Fix matching on tunnel addresses type
    - ipv6: fix a typo in fib6_rule_lookup()
    - selftests: Update fib_nexthop_multiprefix to handle missing ping6
    - net: phy: micrel: add Asym Pause workaround for KSZ9021
    - net/sched: cbs: Fix not adding cbs instance to list
    - ipv4: Revert removal of rt_uses_gateway
    - net_sched: add policy validation for action attributes
    - vrf: Do not attempt to create IPv6 mcast rule if IPv6 is disabled
    - net/mlx5e: Fix traffic duplication in ethtool steering
    - net: sched: fix possible crash in tcf_action_destroy()
    - tcp: better handle TCP_USER_TIMEOUT in SYN_SENT state
    - net/mlx5: Add device ID of upcoming BlueField-2
    - ALSA: hda: Flush interrupts on disabling
    - ASoC: SOF: Intel: hda: Make hdac_device device-managed
    - cpufreq: ap806: Add NULL check after kcalloc
    - ALSA: hda/hdmi - Don't report spurious jack state changes
    - regulator: lm363x: Fix off-by-one n_voltages for lm3632 ldo_vpos/ldo_vneg
    - regulator: lm363x: Fix n_voltages setting for lm36274
    - spi: dw-mmio: Clock should be shut when error occurs
    - ASoC: tlv320aic31xx: suppress error message for EPROBE_DEFER
    - ASoC: sgtl5000: Fix of unmute outputs on probe
    - ASoC: sgtl5000: Fix charge pump source assignment
    - firmware: qcom_scm: Use proper types for dma mappings
    - dmaengine: bcm2835: Print error in case setting DMA mask fails
    - leds: leds-lp5562 allow firmware files up to the maximum length
    - ASoC: SOF: reset DMA state in prepare
    - media: dib0700: fix link error for dibx000_i2c_set_speed
    - media: mtk-cir: lower de-glitch counter for rc-mm protocol
    - ASoC: SOF: pci: mark last_busy value at runtime PM init
    - media: exynos4-is: fix leaked of_node references
    - media: vivid:add sanity check to avoid divide error and set value to 1 if 0.
    - media: vb2: reorder checks in vb2_poll()
    - media: vivid: work around high stack usage with clang
    - media: hdpvr: Add device num check and handling
    - media: i2c: ov5640: Check for devm_gpiod_get_optional() error
    - time/tick-broadcast: Fix tick_broadcast_offline() lockdep complaint
    - sched/fair: Fix imbalance due to CPU affinity
    - sched/core: Fix CPU controller for !RT_GROUP_SCHED
    - x86/apic: Make apic_pending_intr_clear() more robust
    - sched/deadline: Fix bandwidth accounting at all levels after offline
      migration
    - x86/reboot: Always use NMI fallback when shutdown via reboot vector IPI
      fails
    - rcu/tree: Call setschedule() gp ktread to SCHED_FIFO outside of atomic
      region
    - x86/apic: Soft disable APIC before initializing it
    - ALSA: hda - Show the fatal CORB/RIRB error more clearly
    - ALSA: i2c: ak4xxx-adda: Fix a possible null pointer dereference in
      build_adc_controls()
    - rcu: Add destroy_work_on_stack() to match INIT_WORK_ONSTACK()
    - EDAC/mc: Fix grain_bits calculation
    - arm64: dts: imx8mq: Correct OPP table according to latest datasheet
    - media: iguanair: add sanity checks
    - cpuidle: teo: Allow tick to be stopped if PM QoS is used
    - gpio: madera: Add support for Cirrus Logic CS47L15
    - gpio: madera: Add support for Cirrus Logic CS47L92
    - arm64: mm: free the initrd reserved memblock in a aligned manner
    - soc: amlogic: meson-clk-measure: protect measure with a mutex
    - base: soc: Export soc_device_register/unregister APIs
    - ALSA: usb-audio: Skip bSynchAddress endpoint check if it is invalid
    - ia64:unwind: fix double free for mod->arch.init_unw_table
    - EDAC/altera: Use the proper type for the IRQ status bits
    - ASoC: rsnd: don't call clk_get_rate() under atomic context
    - arm64/prefetch: fix a -Wtype-limits warning
    - md/raid1: end bio when the device faulty
    - md: don't call spare_active in md_reap_sync_thread if all member devices
      can't work
    - md: don't set In_sync if array is frozen
    - media: media/platform: fsl-viu.c: fix build for MICROBLAZE
    - media: staging: tegra-vde: Fix build error
    - RAS: Build debugfs.o only when enabled in Kconfig
    - ASoC: hdac_hda: fix page fault issue by removing race
    - ACPI / processor: don't print errors for processorIDs == 0xff
    - loop: Add LOOP_SET_DIRECT_IO to compat ioctl
    - perf tools: Fix paths in include statements
    - EDAC, pnd2: Fix ioremap() size in dnv_rd_reg()
    - efi: cper: print AER info of PCIe fatal error
    - firmware: arm_scmi: Check if platform has released shmem before using
    - sched/fair: Use rq_lock/unlock in online_fair_sched_group
    - idle: Prevent late-arriving interrupts from disrupting offline
    - blk-mq: Fix memory leak in blk_mq_init_allocated_queue error handling
    - media: gspca: zero usb_buf on error
    - perf config: Honour $PERF_CONFIG env var to specify alternate .perfconfig
    - perf test vfs_getname: Disable ~/.perfconfig to get default output
    - media: mtk-mdp: fix reference count on old device tree
    - media: i2c: tda1997x: prevent potential NULL pointer access
    - media: fdp1: Reduce FCP not found message level to debug
    - media: em28xx: modules workqueue not inited for 2nd device
    - arm64/efi: Move variable assignments after SECTIONS
    - perf unwind: Fix libunwind when tid != pid
    - media: rc: imon: Allow iMON RC protocol for ffdc 7e device
    - dmaengine: iop-adma: use correct printk format strings
    - ARM: xscale: fix multi-cpu compilation
    - perf record: Support aarch64 random socket_id assignment
    - media: vsp1: fix memory leak of dl on error return path
    - media: i2c: ov5645: Fix power sequence
    - media: omap3isp: Don't set streaming state on random subdevs
    - media: imx: mipi csi-2: Don't fail if initial state times-out
    - kasan/arm64: fix CONFIG_KASAN_SW_TAGS && KASAN_INLINE
    - net: lpc-enet: fix printk format strings
    - m68k: Prevent some compiler warnings in Coldfire builds
    - ARM: dts: imx7d: cl-som-imx7: make ethernet work again
    - arm64: dts: qcom: qcs404-evb: Mark WCSS clocks protected
    - ARM: dts: imx7-colibri: disable HS400
    - x86/platform/intel/iosf_mbi Rewrite locking
    - media: radio/si470x: kill urb on error
    - media: hdpvr: add terminating 0 at end of string
    - ASoC: uniphier: Fix double reset assersion when transitioning to suspend
      state
    - powerpc/Makefile: Always pass --synthetic to nm if supported
    - tools headers: Fixup bitsperlong per arch includes
    - ASoC: sun4i-i2s: Don't use the oversample to calculate BCLK
    - ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running
    - led: triggers: Fix a memory leak bug
    - ASoC: mchp-i2s-mcc: Fix unprepare of GCLK
    - nbd: add missing config put
    - ACPI / APEI: Release resources if gen_pool_add() fails
    - arm64: entry: Move ct_user_exit before any other exception
    - s390/kasan: provide uninstrumented __strlen
    - media: mceusb: fix (eliminate) TX IR signal length limit
    - media: dvb-frontends: use ida for pll number
    - posix-cpu-timers: Sanitize bogus WARNONS
    - media: dvb-core: fix a memory leak bug
    - EDAC/amd64: Support more than two controllers for chip selects handling
    - cpufreq: imx-cpufreq-dt: Add i.MX8MN support
    - libperf: Fix alignment trap with xyarray contents in 'perf stat'
    - EDAC/amd64: Recognize DRAM device type ECC capability
    - EDAC/amd64: Decode syndrome before translating address
    - ARM: at91: move platform-specific asm-offset.h to arch/arm/mach-at91
    - soc: renesas: rmobile-sysc: Set GENPD_FLAG_ALWAYS_ON for always-on domain
    - soc: renesas: Enable ARM_ERRATA_754322 for affected Cortex-A9
    - PM / devfreq: Fix kernel oops on governor module load
    - ARM: OMAP2+: move platform-specific asm-offset.h to arch/arm/mach-omap2
    - PM / devfreq: passive: Use non-devm notifiers
    - PM / devfreq: exynos-bus: Correct clock enable sequence
    - media: cec-notifier: clear cec_adap in cec_notifier_unregister
    - media: saa7146: add cleanup in hexium_attach()
    - media: cpia2_usb: fix memory leaks
    - media: saa7134: fix terminology around saa7134_i2c_eeprom_md7134_gate()
    - perf trace beauty ioctl: Fix off-by-one error in cmd->string table
    - perf report: Fix --ns time sort key output
    - perf script: Fix memory leaks in list_scripts()
    - media: aspeed-video: address a protential usage of an unitialized var
    - media: ov9650: add a sanity check
    - leds: lm3532: Fixes for the driver for stability
    - ASoC: es8316: fix headphone mixer volume table
    - ACPI / CPPC: do not require the _PSD method
    - sched/cpufreq: Align trace event behavior of fast switching
    - arm64: dts: meson: fix boards regulators states format
    - x86/apic/vector: Warn when vector space exhaustion breaks affinity
    - arm64: kpti: ensure patched kernel text is fetched from PoU
    - perf evlist: Use unshare(CLONE_FS) in sb threads to let setns(CLONE_NEWNS)
      work
    - arm64: Use correct ll/sc atomic constraints
    - jump_label: Don't warn on __exit jump entries
    - x86/mm/pti: Do not invoke PTI functions when PTI is disabled
    - ASoC: fsl_ssi: Fix clock control issue in master mode
    - x86/mm/pti: Handle unaligned address gracefully in pti_clone_pagetable()
    - nvmet: fix data units read and written counters in SMART log
    - nvme-multipath: fix ana log nsid lookup when nsid is not found
    - ALSA: firewire-motu: add support for MOTU 4pre
    - iommu/amd: Silence warnings under memory pressure
    - ASoC: Intel: Haswell: Adjust machine device private context
    - libata/ahci: Drop PCS quirk for Denverton and beyond
    - iommu/iova: Avoid false sharing on fq_timer_on
    - libtraceevent: Change users plugin directory
    - ASoC: dt-bindings: sun4i-spdif: Fix dma-names warning
    - ARM: dts: exynos: Mark LDO10 as always-on on Peach Pit/Pi Chromebooks
    - x86/amd_nb: Add PCI device IDs for family 17h, model 70h
    - ACPI: custom_method: fix memory leaks
    - ACPI / PCI: fix acpi_pci_irq_enable() memory leak
    - closures: fix a race on wakeup from closure_sync
    - hwmon: (k10temp) Add support for AMD family 17h, model 70h CPUs
    - hwmon: (acpi_power_meter) Change log level for 'unsafe software power cap'
    - md/raid1: fail run raid1 array when active disk less than one
    - dmaengine: ti: edma: Do not reset reserved paRAM slots
    - kprobes: Prohibit probing on BUG() and WARN() address
    - x86/mm: Fix cpumask_of_node() error condition
    - irqchip/sifive-plic: set max threshold for ignored handlers
    - s390/crypto: xts-aes-s390 fix extra run-time crypto self tests finding
    - irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices
    - x86/cpu: Add Tiger Lake to Intel family
    - platform/x86: intel_pmc_core: Do not ioremap RAM
    - platform/x86: intel_pmc_core_pltdrv: Module removal warning fix
    - ASoC: dmaengine: Make the pcm->name equal to pcm->id if the name is not set
    - tools/power/x86/intel-speed-select: Fix memory leak
    - spi: bcm2835: Work around DONE bit erratum
    - io_uring: fix wrong sequence setting logic
    - block: make rq sector size accessible for block stats
    - raid5: don't set STRIPE_HANDLE to stripe which is in batch list
    - mmc: core: Clarify sdio_irq_pending flag for MMC_CAP2_SDIO_IRQ_NOTHREAD
    - sched/psi: Correct overly pessimistic size calculation
    - mmc: sdhci: Fix incorrect switch to HS mode
    - mmc: core: Add helper function to indicate if SDIO IRQs is enabled
    - mmc: dw_mmc: Re-store SDIO IRQs mask at system resume
    - raid5: don't increment read_errors on EILSEQ return
    - mmc: mtk-sd: Re-store SDIO IRQs mask at system resume
    - libertas: Add missing sentinel at end of if_usb.c fw_table
    - ALSA: hda - Add a quirk model for fixing Huawei Matebook X right speaker
    - ALSA: hda - Drop unsol event handler for Intel HDMI codecs
    - drm/amd/powerplay/smu7: enforce minimal VBITimeout (v2)
    - media: ttusb-dec: Fix info-leak in ttusb_dec_send_command()
    - drm: fix module name in edid_firmware log message
    - ALSA: hda/realtek - Blacklist PC beep for Lenovo ThinkCentre M73/93
    - zd1211rw: remove false assertion from zd_mac_clear()
    - btrfs: delayed-inode: Kill the BUG_ON() in btrfs_delete_delayed_dir_index()
    - btrfs: extent-tree: Make sure we only allocate extents from block groups
      with the same type
    - btrfs: tree-checker: Add ROOT_ITEM check
    - btrfs: Detect unbalanced tree with empty leaf before crashing btree
      operations
    - kvm: Nested KVM MMUs need PAE root too
    - media: omap3isp: Set device on omap3isp subdevs
    - PM / devfreq: passive: fix compiler warning
    - ARM: dts: logicpd-torpedo-baseboard: Fix missing video
    - ARM: omap2plus_defconfig: Fix missing video
    - iwlwifi: fw: don't send GEO_TX_POWER_LIMIT command to FW version 36
    - ALSA: firewire-tascam: handle error code when getting current source of
      clock
    - ALSA: firewire-tascam: check intermediate state of clock status and retry
    - scsi: scsi_dh_rdac: zero cdb in send_mode_select()
    - scsi: qla2xxx: Fix Relogin to prevent modifying scan_state flag
    - printk: Do not lose last line in kmsg buffer dump
    - IB/mlx5: Free mpi in mp_slave mode
    - IB/hfi1: Define variables as unsigned long to fix KASAN warning
    - IB/hfi1: Do not update hcrc for a KDETH packet during fault injection
    - RDMA: Fix double-free in srq creation error flow
    - randstruct: Check member structs in is_pure_ops_struct()
    - ARM: dts: am3517-evm: Fix missing video
    - rcu/tree: Fix SCHED_FIFO params
    - ALSA: hda/realtek - PCI quirk for Medion E4254
    - blk-mq: add callback of .cleanup_rq
    - scsi: implement .cleanup_rq callback
    - powerpc/imc: Dont create debugfs files for cpu-less nodes
    - tpm_tis_core: Turn on the TPM before probing IRQ's
    - tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts
    - tpm: Wrap the buffer from the caller to tpm_buf in tpm_send()
    - fuse: fix deadlock with aio poll and fuse_iqueue::waitq.lock
    - fuse: fix missing unlock_page in fuse_writepage()
    - fuse: fix beyond-end-of-page access in fuse_parse_cache()
    - parisc: Disable HP HSC-PCI Cards to prevent kernel crash
    - platform/x86: intel_int0002_vgpio: Fix wakeups not working on Cherry Trail
    - KVM: x86: always stop emulation on page fault
    - KVM: x86: set ctxt->have_exception in x86_decode_insn()
    - KVM: x86: Manually calculate reserved bits when loading PDPTRS
    - KVM: x86: Disable posted interrupts for non-standard IRQs delivery modes
    - kvm: x86: Add "significant index" flag to a few CPUID leaves
    - KVM: x86/mmu: Use fast invalidate mechanism to zap MMIO sptes
    - media: videobuf-core.c: poll_wait needs a non-NULL buf pointer
    - media: sn9c20x: Add MSI MS-1039 laptop to flip_dmi_table
    - media: hantro: Set DMA max segment size
    - media: don't drop front-end reference count for ->detach
    - media: vivid: fix device init when no_error_inj=1 and fb disabled
    - spi: ep93xx: Repair SPI CS lookup tables
    - spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours
    - binfmt_elf: Do not move brk for INTERP-less ET_EXEC
    - ASoC: Intel: NHLT: Fix debug print format
    - ASoC: Intel: Skylake: Use correct function to access iomem space
    - ASoC: Intel: Fix use of potentially uninitialized variable
    - staging: erofs: cannot set EROFS_V_Z_INITED_BIT if fill_inode_lazy fails
    - ARM: samsung: Fix system restart on S3C6410
    - ARM: zynq: Use memcpy_toio instead of memcpy on smp bring-up
    - arm64: tlb: Ensure we execute an ISB following walk cache invalidation
    - arm64: dts: rockchip: limit clock rate of MMC controllers for RK3328
    - iommu/arm-smmu-v3: Disable detection of ATS and PRI
    - alarmtimer: Use EOPNOTSUPP instead of ENOTSUPP
    - iommu/vt-d: Fix wrong analysis whether devices share the same bus
    - regulator: Defer init completion for a while after late_initcall
    - efifb: BGRT: Improve efifb_bgrt_sanity_check
    - gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps
    - z3fold: fix retry mechanism in page reclaim
    - z3fold: fix memory leak in kmem cache
    - mm/compaction.c: clear total_{migrate,free}_scanned before scanning a new
      zone
    - memcg, oom: don't require __GFP_FS when invoking memcg OOM killer
    - memcg, kmem: do not fail __GFP_NOFAIL charges
    - lib/lzo/lzo1x_compress.c: fix alignment bug in lzo-rle
    - mt76: round up length on mt76_wr_copy
    - KEYS: trusted: correctly initialize digests and fix locking issue
    - ath10k: fix channel info parsing for non tlv target
    - i40e: check __I40E_VF_DISABLE bit in i40e_sync_filters_subtask
    - block: mq-deadline: Fix queue restart handling
    - block: fix null pointer dereference in blk_mq_rq_timed_out()
    - smb3: allow disabling requesting leases
    - smb3: fix unmount hang in open_shroot
    - smb3: fix leak in "open on server" perf counter
    - ovl: Fix dereferencing possible ERR_PTR()
    - ovl: filter of trusted xattr results in audit
    - btrfs: fix allocation of free space cache v1 bitmap pages
    - Btrfs: fix use-after-free when using the tree modification log
    - btrfs: Relinquish CPUs in btrfs_compare_trees
    - btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer
    - btrfs: qgroup: Fix the wrong target io_tree when freeing reserved data space
    - btrfs: qgroup: Fix reserved data space leak if we have multiple reserve
      calls
    - Btrfs: fix race setting up and completing qgroup rescan workers
    - btrfs: Fix a regression which we can't convert to SINGLE profile
    - SUNRPC: Dequeue the request from the receive queue while we're re-encoding
    - SUNRPC: Fix buffer handling of GSS MIC without slack
    - ACPI / LPSS: Save/restore LPSS private registers also on Lynxpoint
    - md/raid6: Set R5_ReadError when there is read failure on parity disk
    - md: don't report active array_state until after revalidate_disk() completes.
    - md: only call set_in_sync() when it is expected to succeed.
    - cfg80211: Purge frame registrations on iftype change
    - /dev/mem: Bail out upon SIGKILL.
    - fs: Export generic_fadvise()
    - mm: Handle MADV_WILLNEED through vfs_fadvise()
    - xfs: Fix stale data exposure when readahead races with hole punch
    - ipmi: move message error checking to avoid deadlock
    - mtd: rawnand: stm32_fmc2: avoid warnings when building with W=1 option
    - ext4: fix warning inside ext4_convert_unwritten_extents_endio
    - ext4: fix punch hole for inline_data file systems
    - quota: fix wrong condition in is_quota_modification()
    - hwrng: core - don't wait on add_early_randomness()
    - i2c: riic: Clear NACK in tend isr
    - CIFS: fix max ea value size
    - CIFS: Fix oplock handling for SMB 2.1+ protocols
    - drm/amd/display: Restore backlight brightness after system resume
    - drm/amd/display: dce11.x /dce12 update formula input
    - drm/amd/display: Add missing HBM support and raise Vega20's uclk.
    - drm/amdgpu/display: fix 64 bit divide
    - md/raid0: avoid RAID0 data corruption due to layout confusion.
    - mt76: mt7615: always release sem in mt7615_load_patch
    - mt76: mt7615: fix mt7615 firmware path definitions
    - platform/chrome: cros_ec_rpmsg: Fix race with host command when probe failed
    - Linux 5.3.4

  * ELAN469D touch pad not working (LP: #1795292) // Ubuntu won't boot on Dell
    Inspiron 7375 (LP: #1837688) // Eoan update: v5.3.4 upstream stable release
    (LP: #1848046)
    - iommu/amd: Override wrong IVRS IOAPIC on Raven Ridge systems

  * Eoan update: v5.3.3 upstream stable release (LP: #1848045)
    - Linux 5.3.2
    - Revert "Linux 5.3.2"
    - Linux 5.3.3

  * Eoan update: v5.3.2 upstream stable release (LP: #1848042)
    - netfilter: add missing IS_ENABLED(CONFIG_NF_TABLES) check to header-file.
    - clocksource/drivers/timer-of: Do not warn on deferred probe
    - clocksource/drivers: Do not warn on probe defer
    - drm/amd/display: Allow cursor async updates for framebuffer swaps
    - drm/amd/display: Skip determining update type for async updates
    - drm/amd/display: Don't replace the dc_state for fast updates
    - drm/amd/display: readd -msse2 to prevent Clang from emitting libcalls to
      undefined SW FP routines
    - powerpc/xive: Fix bogus error code returned by OPAL
    - HID: prodikeys: Fix general protection fault during probe
    - HID: sony: Fix memory corruption issue on cleanup.
    - HID: logitech: Fix general protection fault caused by Logitech driver
    - HID: logitech-dj: Fix crash when initial logi_dj_recv_query_paired_devices
      fails
    - HID: hidraw: Fix invalid read in hidraw_ioctl
    - HID: Add quirk for HP X500 PIXART OEM mouse
    - mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword()
    - crypto: talitos - fix missing break in switch statement
    - clk: imx: imx8mm: fix audio pll setting
    - Revert "mm/z3fold.c: fix race between migration and destruction"
    - ALSA: usb-audio: Add Hiby device family to quirks for native DSD support
    - ALSA: usb-audio: Add DSD support for EVGA NU Audio
    - ALSA: dice: fix wrong packet parameter for Alesis iO26
    - ALSA: hda - Add laptop imic fixup for ASUS M9V laptop
    - ALSA: hda - Apply AMD controller workaround for Raven platform
    - platform/x86: i2c-multi-instantiate: Derive the device name from parent
    - objtool: Clobber user CFLAGS variable
    - Linux 5.3.2

  * Check for CPU Measurement sampling (LP: #1847590)
    - s390/cpumsf: Check for CPU Measurement sampling

  * revert the revert of ext4: make __ext4_get_inode_loc plug (LP: #1846486)
    - random: try to actively add entropy rather than passively wait for it
    - Revert "Revert "ext4: make __ext4_get_inode_loc plug""

  * Fix non-working Realtek USB ethernet after system resume (LP: #1847063)
    - r8152: Set macpassthru in reset_resume callback

  * overlayfs: allow with shiftfs as underlay (LP: #1846272)
    - SAUCE: overlayfs: allow with shiftfs as underlay

  * [regression] NoNewPrivileges incompatible with Apparmor (LP: #1844186)
    - SAUCE: apparmor: fix nnp subset test for unconfined

  * PM / hibernate: fix potential memory corruption (LP: #1847118)
    - PM / hibernate: memory_bm_find_bit(): Tighten node optimisation

  * Miscellaneous Ubuntu changes
    - update dkms package versions

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Sat, 09 Nov 2019 17:11:10
+0100

** Changed in: linux (Ubuntu Eoan)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-12207

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-0154

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-0155

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-11135

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-15793

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17666

** Changed in: linux (Ubuntu Disco)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-15098

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17052

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17053

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17054

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17055

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-17056

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https://bugs.launchpad.net/bugs/1840043

Title:
  bcache: Performance degradation when querying priority_stats

Status in Linux:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Disco:
  Fix Released
Status in linux source package in Eoan:
  Fix Released

Bug description:
  [Impact]
  Querying bcache's priority_stats attribute in sysfs causes severe performance degradation for read/write workloads and occasional system stalls

  [Test Case]
  Note: As the sorting step has the most noticeable performance impact, the test case below pins a workload and the sysfs query to the same CPU. CPU contention issues still occur without any pinning, this just removes the scheduling factor of landing in different CPUs and affecting different tasks.

  1) Start a read/write workload on the bcache device with e.g. fio or dd, pinned to a certain CPU:
  # taskset 0x10 dd if=/dev/zero of=/dev/bcache0 bs=4k status=progress

  2) Start a sysfs query loop for the priority_stats attribute pinned to the same CPU:
  # for i in {1..100000}; do taskset 0x10 cat /sys/fs/bcache/*/cache0/priority_stats > /dev/null; done

  3) Monitor the read/write workload for any performance impact

  [Fix]
  To fix CPU contention and performance impact, a cond_resched() call is introduced in the priority_stats sort comparison.

  [Regression Potential]
  Regression potential is low, as the change is confined to the priority_stats sysfs query. In cases where frequent queries to bcache priority_stats take place (e.g. node_exporter), the impact should be more noticeable as those could now take a bit longer to complete. A regression due to this patch would most likely show up as a performance degradation in bcache-focused workloads.

  --

  [Description]
  In the latest bcache drivers, there's a sysfs attribute that calculates bucket priority statistics in /sys/fs/bcache/*/cache0/priority_stats. Querying this file has a big performance impact on tasks that run in the same CPU, and also affects read/write performance of the bcache device itself.

  This is due to the way the driver calculates the stats: the bcache
  buckets are locked and iterated through, collecting information about
  each individual bucket. An array of nbucket elements is constructed
  and sorted afterwards, which can cause very high CPU contention in
  cases of larger bcache setups.

  From our tests, the sorting step of the priority_stats query causes
  the most expressive performance reduction, as it can hinder tasks that
  are not even doing any bcache IO. If a task is "unlucky" to be
  scheduled in the same CPU as the sysfs query, its performance will be
  harshly reduced as both compete for CPU time. We've had users report
  systems stalls of up to ~6s due to this, as a result from monitoring
  tools that query the priority_stats periodically (e.g. Prometheus Node
  Exporter from [0]). These system stalls have triggered several other
  issues such as ceph-mon re-elections, problems in percona-cluster and
  general network stalls, so the impact is not isolated to bcache IO
  workloads.

  An example benchmark can be seen in [1], where the read performance on
  a bcache device suffered quite heavily (going from ~40k IOPS to ~4k
  IOPS due to priority_stats). Other comparison charts are found under
  [2].

  [0] https://github.com/prometheus/node_exporter
  [1] https://people.canonical.com/~halves/priority_stats/read/4k-iops-2Dsmooth.png
  [2] https://people.canonical.com/~halves/priority_stats/

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