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[Launchpad Bug Tracker <1939915@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 5.4.0-88.99

---------------
linux (5.4.0-88.99) focal; urgency=medium

  * focal/linux: 5.4.0-88.99 -proposed tracker (LP: #1944747)

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2021.09.06)

  * please drop virtualbox-guest-dkms virtualbox-guest-source (LP: #1933248)
    - Revert "UBUNTU: [Config] Disable virtualbox dkms build"

linux (5.4.0-87.98) focal; urgency=medium

  * please drop virtualbox-guest-dkms virtualbox-guest-source (LP: #1933248)
    - [Config] Disable virtualbox dkms build

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2021.09.06)

  *  LRMv5: switch primary version handling to kernel-versions data set
    (LP: #1928921)
    - [Packaging] switch to kernel-versions

  * disable “CONFIG_HISI_DMA” config for ubuntu version (LP: #1936771)
    - Disable CONFIG_HISI_DMA
    - [Config] Record hisi_dma no longer built for arm64

  * memory leaking when removing a profile (LP: #1939915)
    - apparmor: Fix memory leak of profile proxy

  * CryptoExpress EP11 cards are going offline (LP: #1939618)
    - s390/zcrypt: Support for CCA protected key block version 2
    - s390: Replace zero-length array with flexible-array member
    - s390/zcrypt: Use scnprintf() for avoiding potential buffer overflow
    - s390/zcrypt: replace snprintf/sprintf with scnprintf
    - s390/ap: Remove ap device suspend and resume callbacks
    - s390/zcrypt: use fallthrough;
    - s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
    - s390/ap: remove power management code from ap bus and drivers
    - s390/ap: introduce new ap function ap_get_qdev()
    - s390/zcrypt: use kzalloc
    - s390/zcrypt: fix smatch warnings
    - s390/zcrypt: code beautification and struct field renames
    - s390/zcrypt: split ioctl function into smaller code units
    - s390/ap: rename and clarify ap state machine related stuff
    - s390/zcrypt: provide cex4 cca sysfs attributes for cex3
    - s390/ap: rework crypto config info and default domain code
    - s390/zcrypt: simplify cca_findcard2 loop code
    - s390/zcrypt: remove set_fs() invocation in zcrypt device driver
    - s390/ap: remove unnecessary spin_lock_init()
    - s390/zcrypt: Support for CCA APKA master keys
    - s390/zcrypt: introduce msg tracking in zcrypt functions
    - s390/ap: split ap queue state machine state from device state
    - s390/ap: add error response code field for ap queue devices
    - s390/ap: add card/queue deconfig state
    - s390/sclp: Add support for SCLP AP adapter config/deconfig
    - s390/ap: Support AP card SCLP config and deconfig operations
    - s390/ap/zcrypt: revisit ap and zcrypt error handling
    - s390/zcrypt: move ap_msg param one level up the call chain
    - s390/zcrypt: Introduce Failure Injection feature
    - s390/zcrypt: fix wrong format specifications
    - s390/ap: fix ap devices reference counting
    - s390/zcrypt: return EIO when msg retry limit reached
    - s390/zcrypt: fix zcard and zqueue hot-unplug memleak
    - s390/ap: Fix hanging ioctl caused by wrong msg counter

  * memfd from ubuntu_kernel_selftests failed to build on B-5.4 (LP: #1926142)
    - SAUCE: selftests/memfd: fix build when F_SEAL_FUTURE_WRITE is not defined

  * [SRU] Ice driver causes the kernel to crash with Ubuntu 20.04.2 with ethtool
    specific register commands (LP: #1939855)
    - ice: Fix bad register reads

  * ubunut_kernel_selftests: memory-hotplug: avoid spamming logs with
    dump_page() (LP: #1941829)
    - selftests: memory-hotplug: avoid spamming logs with dump_page(), ratio limit
      hot-remove error test

  * e1000e blocks the boot process when it tried to write checksum to its NVM
    (LP: #1936998)
    - e1000e: Do not take care about recovery NVM checksum

  * Focal update: v5.4.140 upstream stable release (LP: #1941798)
    - Revert "ACPICA: Fix memory leak caused by _CID repair function"
    - ALSA: seq: Fix racy deletion of subscriber
    - arm64: dts: ls1028a: fix node name for the sysclk
    - ARM: imx: add missing iounmap()
    - ARM: imx: add missing clk_disable_unprepare()
    - ARM: dts: imx6qdl-sr-som: Increase the PHY reset duration to 10ms
    - ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz
    - ARM: imx: fix missing 3rd argument in macro imx_mmdc_perf_init
    - ARM: dts: imx: Swap M53Menlo pinctrl_power_button/pinctrl_power_out pins
    - arm64: dts: armada-3720-turris-mox: remove mrvl,i2c-fast-mode
    - ALSA: usb-audio: fix incorrect clock source setting
    - clk: stm32f4: fix post divisor setup for I2S/SAI PLLs
    - ARM: dts: am437x-l4: fix typo in can@0 node
    - omap5-board-common: remove not physically existing vdds_1v8_main fixed-
      regulator
    - spi: imx: mx51-ecspi: Reinstate low-speed CONFIGREG delay
    - spi: imx: mx51-ecspi: Fix low-speed CONFIGREG delay calculation
    - scsi: sr: Return correct event when media event code is 3
    - media: videobuf2-core: dequeue if start_streaming fails
    - dmaengine: imx-dma: configure the generic DMA type to make it work
    - net, gro: Set inner transport header offset in tcp/udp GRO hook
    - net: dsa: sja1105: overwrite dynamic FDB entries with static ones in
      .port_fdb_add
    - net: dsa: sja1105: invalidate dynamic FDB entries learned concurrently with
      statically added ones
    - net: phy: micrel: Fix detection of ksz87xx switch
    - net: natsemi: Fix missing pci_disable_device() in probe and remove
    - gpio: tqmx86: really make IRQ optional
    - sctp: move the active_key update after sh_keys is added
    - nfp: update ethtool reporting of pauseframe control
    - net: ipv6: fix returned variable type in ip6_skb_dst_mtu
    - mips: Fix non-POSIX regexp
    - bnx2x: fix an error code in bnx2x_nic_load()
    - net: pegasus: fix uninit-value in get_interrupt_interval
    - net: fec: fix use-after-free in fec_drv_remove
    - net: vxge: fix use-after-free in vxge_device_unregister
    - blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
    - Bluetooth: defer cleanup of resources in hci_unregister_dev()
    - USB: usbtmc: Fix RCU stall warning
    - USB: serial: option: add Telit FD980 composition 0x1056
    - USB: serial: ch341: fix character loss at high transfer rates
    - USB: serial: ftdi_sio: add device ID for Auto-M3 OP-COM v2
    - firmware_loader: use -ETIMEDOUT instead of -EAGAIN in fw_load_sysfs_fallback
    - firmware_loader: fix use-after-free in firmware_fallback_sysfs
    - ALSA: hda/realtek: add mic quirk for Acer SF314-42
    - ALSA: usb-audio: Add registration quirk for JBL Quantum 600
    - usb: cdns3: Fixed incorrect gadget state
    - usb: gadget: f_hid: added GET_IDLE and SET_IDLE handlers
    - usb: gadget: f_hid: fixed NULL pointer dereference
    - usb: gadget: f_hid: idle uses the highest byte for duration
    - usb: otg-fsm: Fix hrtimer list corruption
    - clk: fix leak on devm_clk_bulk_get_all() unwind
    - scripts/tracing: fix the bug that can't parse raw_trace_func
    - tracing / histogram: Give calculation hist_fields a size
    - optee: Clear stale cache entries during initialization
    - tee: add tee_shm_alloc_kernel_buf()
    - optee: Fix memory leak when failing to register shm pages
    - tpm_ftpm_tee: Free and unregister TEE shared memory during kexec
    - staging: rtl8723bs: Fix a resource leak in sd_int_dpc
    - staging: rtl8712: get rid of flush_scheduled_work
    - media: rtl28xxu: fix zero-length control request
    - pipe: increase minimum default pipe size to 2 pages
    - ext4: fix potential htree corruption when growing large_dir directories
    - serial: tegra: Only print FIFO error message when an error occurs
    - serial: 8250_mtk: fix uart corruption issue when rx power off
    - serial: 8250: Mask out floating 16/32-bit bus bits
    - MIPS: Malta: Do not byte-swap accesses to the CBUS UART
    - serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver
    - serial: 8250_pci: Avoid irq sharing for MSI(-X) interrupts.
    - timers: Move clearing of base::timer_running under base:: Lock
    - pcmcia: i82092: fix a null pointer dereference bug
    - md/raid10: properly indicate failure when ending a failed write request
    - KVM: x86: accept userspace interrupt only if no event is injected
    - KVM: Do not leak memory for duplicate debugfs directories
    - KVM: x86/mmu: Fix per-cpu counter corruption on 32-bit builds
    - arm64: vdso: Avoid ISB after reading from cntvct_el0
    - soc: ixp4xx: fix printing resources
    - spi: meson-spicc: fix memory leak in meson_spicc_remove
    - soc: ixp4xx/qmgr: fix invalid __iomem access
    - perf/x86/amd: Don't touch the AMD64_EVENTSEL_HOSTONLY bit inside the guest
    - bpf, selftests: Adjust few selftest result_unpriv outcomes
    - libata: fix ata_pio_sector for CONFIG_HIGHMEM
    - reiserfs: add check for root_inode in reiserfs_fill_super
    - reiserfs: check directory items on read from disk
    - virt_wifi: fix error on connect
    - alpha: Send stop IPI to send to online CPUs
    - net/qla3xxx: fix schedule while atomic in ql_wait_for_drvr_lock and
      ql_adapter_reset
    - arm64: fix compat syscall return truncation
    - Linux 5.4.140

  * Focal update: v5.4.139 upstream stable release (LP: #1941796)
    - btrfs: delete duplicated words + other fixes in comments
    - btrfs: do not commit logs and transactions during link and rename operations
    - btrfs: fix race causing unnecessary inode logging during link and rename
    - btrfs: fix lost inode on log replay after mix of fsync, rename and inode
      eviction
    - regulator: rt5033: Fix n_voltages settings for BUCK and LDO
    - spi: stm32h7: fix full duplex irq handler handling
    - ASoC: tlv320aic31xx: fix reversed bclk/wclk master bits
    - r8152: Fix potential PM refcount imbalance
    - qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()
    - net: Fix zero-copy head len calculation.
    - nvme: fix nvme_setup_command metadata trace event
    - ACPI: fix NULL pointer dereference
    - Revert "Bluetooth: Shutdown controller after workqueues are flushed or
      cancelled"
    - firmware: arm_scmi: Ensure drivers provide a probe function
    - firmware: arm_scmi: Add delayed response status check
    - bpf: Inherit expanded/patched seen count from old aux data
    - bpf: Do not mark insn as seen under speculative path verification
    - bpf: Fix leakage under speculation on mispredicted branches
    - bpf: Test_verifier, add alu32 bounds tracking tests
    - bpf, selftests: Add a verifier test for assigning 32bit reg states to 64bit
      ones
    - bpf, selftests: Adjust few selftest outcomes wrt unreachable code
    - spi: mediatek: Fix fifo transfer
    - Linux 5.4.139

  * Focal update: v5.4.138 upstream stable release (LP: #1940559)
    - net_sched: check error pointer in tcf_dump_walker()
    - x86/asm: Ensure asm/proto.h can be included stand-alone
    - btrfs: fix rw device counting in __btrfs_free_extra_devids
    - btrfs: mark compressed range uptodate only if all bio succeed
    - x86/kvm: fix vcpu-id indexed array sizes
    - KVM: add missing compat KVM_CLEAR_DIRTY_LOG
    - ocfs2: fix zero out valid data
    - ocfs2: issue zeroout to EOF blocks
    - can: j1939: j1939_xtp_rx_dat_one(): fix rxtimer value between consecutive
      TP.DT to 750ms
    - can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
    - can: mcba_usb_start(): add missing urb->transfer_dma initialization
    - can: usb_8dev: fix memory leak
    - can: ems_usb: fix memory leak
    - can: esd_usb2: fix memory leak
    - HID: wacom: Re-enable touch by default for Cintiq 24HDT / 27QHDT
    - NIU: fix incorrect error return, missed in previous revert
    - nfc: nfcsim: fix use after free during module unload
    - cfg80211: Fix possible memory leak in function cfg80211_bss_update
    - netfilter: conntrack: adjust stop timestamp to real expiry value
    - netfilter: nft_nat: allow to specify layer 4 protocol NAT only
    - i40e: Fix logic of disabling queues
    - i40e: Fix firmware LLDP agent related warning
    - i40e: Fix queue-to-TC mapping on Tx
    - i40e: Fix log TC creation failure when max num of queues is exceeded
    - tipc: fix sleeping in tipc accept routine
    - net: Set true network header for ECN decapsulation
    - mlx4: Fix missing error code in mlx4_load_one()
    - net: llc: fix skb_over_panic
    - net/mlx5: Fix flow table chaining
    - net/mlx5e: Fix nullptr in mlx5e_hairpin_get_mdev()
    - sctp: fix return value check in __sctp_rcv_asconf_lookup
    - tulip: windbond-840: Fix missing pci_disable_device() in probe and remove
    - sis900: Fix missing pci_disable_device() in probe and remove
    - can: hi311x: fix a signedness bug in hi3110_cmd()
    - PCI: mvebu: Setup BAR0 in order to fix MSI
    - powerpc/pseries: Fix regression while building external modules
    - i40e: Add additional info to PHY type error
    - can: j1939: j1939_session_deactivate(): clarify lifetime of session object
    - Linux 5.4.138

  * Focal update: v5.4.137 upstream stable release (LP: #1940557)
    - selftest: fix build error in tools/testing/selftests/vm/userfaultfd.c
    - tools: Allow proper CC/CXX/... override with LLVM=1 in Makefile.include
    - KVM: x86: determine if an exception has an error code only when injecting
      it.
    - af_unix: fix garbage collect vs MSG_PEEK
    - workqueue: fix UAF in pwq_unbound_release_workfn()
    - cgroup1: fix leaked context root causing sporadic NULL deref in LTP
    - net/802/mrp: fix memleak in mrp_request_join()
    - net/802/garp: fix memleak in garp_request_join()
    - net: annotate data race around sk_ll_usec
    - sctp: move 198 addresses from unusable to private scope
    - ipv6: allocate enough headroom in ip6_finish_output2()
    - hfs: add missing clean-up in hfs_fill_super
    - hfs: fix high memory mapping in hfs_bnode_read
    - hfs: add lock nesting notation to hfs_find_init
    - firmware: arm_scmi: Fix possible scmi_linux_errmap buffer overflow
    - firmware: arm_scmi: Fix range check for the maximum number of pending
      messages
    - cifs: fix the out of range assignment to bit fields in
      parse_server_interfaces
    - iomap: remove the length variable in iomap_seek_data
    - iomap: remove the length variable in iomap_seek_hole
    - ARM: dts: versatile: Fix up interrupt controller node names
    - ipv6: ip6_finish_output2: set sk into newly allocated nskb
    - Linux 5.4.137

  * Focal update: v5.4.136 upstream stable release (LP: #1939899)
    - igc: Fix use-after-free error during reset
    - igb: Fix use-after-free error during reset
    - igc: change default return of igc_read_phy_reg()
    - ixgbe: Fix an error handling path in 'ixgbe_probe()'
    - igc: Prefer to use the pci_release_mem_regions method
    - igc: Fix an error handling path in 'igc_probe()'
    - igb: Fix an error handling path in 'igb_probe()'
    - fm10k: Fix an error handling path in 'fm10k_probe()'
    - e1000e: Fix an error handling path in 'e1000_probe()'
    - iavf: Fix an error handling path in 'iavf_probe()'
    - igb: Check if num of q_vectors is smaller than max before array access
    - igb: Fix position of assignment to *ring
    - gve: Fix an error handling path in 'gve_probe()'
    - ipv6: fix 'disable_policy' for fwd packets
    - selftests: icmp_redirect: remove from checking for IPv6 route get
    - selftests: icmp_redirect: IPv6 PMTU info should be cleared after redirect
    - pwm: sprd: Ensure configuring period and duty_cycle isn't wrongly skipped
    - cxgb4: fix IRQ free race during driver unload
    - nvme-pci: do not call nvme_dev_remove_admin from nvme_remove
    - perf probe: Fix dso->nsinfo refcounting
    - perf env: Fix sibling_dies memory leak
    - perf test session_topology: Delete session->evlist
    - perf test event_update: Fix memory leak of evlist
    - perf dso: Fix memory leak in dso__new_map()
    - perf script: Fix memory 'threads' and 'cpus' leaks on exit
    - perf lzma: Close lzma stream on exit
    - perf probe-file: Delete namelist in del_events() on the error path
    - perf data: Close all files in close_dir()
    - spi: imx: add a check for speed_hz before calculating the clock
    - spi: stm32: Use dma_request_chan() instead dma_request_slave_channel()
    - spi: stm32: fixes pm_runtime calls in probe/remove
    - regulator: hi6421: Use correct variable type for regmap api val argument
    - regulator: hi6421: Fix getting wrong drvdata
    - spi: mediatek: fix fifo rx mode
    - ASoC: rt5631: Fix regcache sync errors on resume
    - liquidio: Fix unintentional sign extension issue on left shift of u16
    - s390/bpf: Perform r1 range checking before accessing jit->seen_reg[r1]
    - bpf, sockmap, tcp: sk_prot needs inuse_idx set for proc stats
    - bpftool: Check malloc return value in mount_bpffs_for_pin
    - net: fix uninit-value in caif_seqpkt_sendmsg
    - efi/tpm: Differentiate missing and invalid final event log table.
    - net: decnet: Fix sleeping inside in af_decnet
    - KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash
    - KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
    - net: sched: fix memory leak in tcindex_partial_destroy_work
    - netrom: Decrease sock refcount when sock timers expire
    - scsi: iscsi: Fix iface sysfs attr detection
    - scsi: target: Fix protect handling in WRITE SAME(32)
    - spi: cadence: Correct initialisation of runtime PM again
    - bnxt_en: Improve bnxt_ulp_stop()/bnxt_ulp_start() call sequence.
    - bnxt_en: Refresh RoCE capabilities in bnxt_ulp_probe()
    - bnxt_en: Add missing check for BNXT_STATE_ABORT_ERR in bnxt_fw_rset_task()
    - bnxt_en: Check abort error state in bnxt_half_open_nic()
    - net: hisilicon: rename CACHE_LINE_MASK to avoid redefinition
    - net/tcp_fastopen: fix data races around tfo_active_disable_stamp
    - net: hns3: fix rx VLAN offload state inconsistent issue
    - net/sched: act_skbmod: Skip non-Ethernet packets
    - ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
    - nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING
    - Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem"
    - afs: Fix tracepoint string placement with built-in AFS
    - r8169: Avoid duplicate sysfs entry creation error
    - nvme: set the PRACT bit when using Write Zeroes with T10 PI
    - sctp: update active_key for asoc when old key is being replaced
    - net: sched: cls_api: Fix the the wrong parameter
    - drm/panel: raspberrypi-touchscreen: Prevent double-free
    - proc: Avoid mixing integer types in mem_rw()
    - s390/ftrace: fix ftrace_update_ftrace_func implementation
    - s390/boot: fix use of expolines in the DMA code
    - ALSA: usb-audio: Add missing proc text entry for BESPOKEN type
    - ALSA: usb-audio: Add registration quirk for JBL Quantum headsets
    - ALSA: sb: Fix potential ABBA deadlock in CSP driver
    - ALSA: hdmi: Expose all pins on MSI MS-7C94 board
    - xhci: Fix lost USB 2 remote wake
    - KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow
    - KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state
    - usb: hub: Disable USB 3 device initiated lpm if exit latency is too high
    - usb: hub: Fix link power management max exit latency (MEL) calculations
    - USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS
    - usb: max-3421: Prevent corruption of freed memory
    - usb: renesas_usbhs: Fix superfluous irqs happen after usb_pkt_pop()
    - USB: serial: option: add support for u-blox LARA-R6 family
    - USB: serial: cp210x: fix comments for GE CS1000
    - USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick
    - usb: dwc2: gadget: Fix sending zero length packet in DDMA mode.
    - firmware/efi: Tell memblock about EFI iomem reservations
    - tracing/histogram: Rename "cpu" to "common_cpu"
    - tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop.
    - btrfs: check for missing device in btrfs_trim_fs
    - media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf()
    - ixgbe: Fix packet corruption due to missing DMA sync
    - selftest: use mmap instead of posix_memalign to allocate memory
    - userfaultfd: do not untag user pointers
    - hugetlbfs: fix mount mode command line processing
    - rbd: don't hold lock_rwsem while running_list is being drained
    - rbd: always kick acquire on "acquired" and "released" notifications
    - nds32: fix up stack guard gap
    - drm: Return -ENOTTY for non-drm ioctls
    - net: dsa: mv88e6xxx: use correct .stats_set_histogram() on Topaz
    - net: bcmgenet: ensure EXT_ENERGY_DET_MASK is clear
    - iio: accel: bma180: Use explicit member assignment
    - iio: accel: bma180: Fix BMA25x bandwidth register values
    - btrfs: compression: don't try to compress if we don't have enough pages
    - PCI: Mark AMD Navi14 GPU ATS as broken
    - perf inject: Close inject.output on exit
    - xhci: add xhci_get_virt_ep() helper
    - Linux 5.4.136

  * Focal update: v5.4.135 upstream stable release (LP: #1939442)
    - ARM: dts: gemini: rename mdio to the right name
    - ARM: dts: gemini: add device_type on pci
    - ARM: dts: rockchip: fix pinctrl sleep nodename for rk3036-kylin and rk3288
    - arm64: dts: rockchip: fix pinctrl sleep nodename for rk3399.dtsi
    - ARM: dts: rockchip: Fix the timer clocks order
    - ARM: dts: rockchip: Fix IOMMU nodes properties on rk322x
    - ARM: dts: rockchip: Fix power-controller node names for rk3066a
    - ARM: dts: rockchip: Fix power-controller node names for rk3188
    - ARM: dts: rockchip: Fix power-controller node names for rk3288
    - arm64: dts: rockchip: Fix power-controller node names for px30
    - arm64: dts: rockchip: Fix power-controller node names for rk3328
    - reset: ti-syscon: fix to_ti_syscon_reset_data macro
    - ARM: brcmstb: dts: fix NAND nodes names
    - ARM: Cygnus: dts: fix NAND nodes names
    - ARM: NSP: dts: fix NAND nodes names
    - ARM: dts: BCM63xx: Fix NAND nodes names
    - ARM: dts: Hurricane 2: Fix NAND nodes names
    - ARM: dts: imx6: phyFLEX: Fix UART hardware flow control
    - ARM: imx: pm-imx5: Fix references to imx5_cpu_suspend_info
    - rtc: mxc_v2: add missing MODULE_DEVICE_TABLE
    - kbuild: sink stdout from cmd for silent build
    - ARM: dts: am57xx-cl-som-am57x: fix ti,no-reset-on-init flag for gpios
    - ARM: dts: am437x-gp-evm: fix ti,no-reset-on-init flag for gpios
    - ARM: dts: stm32: fix gpio-keys node on STM32 MCU boards
    - ARM: dts: stm32: fix RCC node name on stm32f429 MCU
    - ARM: dts: stm32: fix timer nodes on STM32 MCU to prevent warnings
    - arm64: dts: juno: Update SCPI nodes as per the YAML schema
    - ARM: dts: rockchip: fix supply properties in io-domains nodes
    - ARM: dts: stm32: fix i2c node name on stm32f746 to prevent warnings
    - ARM: dts: stm32: move stmmac axi config in ethernet node on stm32mp15
    - soc/tegra: fuse: Fix Tegra234-only builds
    - firmware: tegra: bpmp: Fix Tegra234-only builds
    - arm64: dts: ls208xa: remove bus-num from dspi node
    - arm64: dts: imx8mq: assign PCIe clocks
    - thermal/core: Correct function name thermal_zone_device_unregister()
    - kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
    - rtc: max77686: Do not enforce (incorrect) interrupt trigger type
    - scsi: aic7xxx: Fix unintentional sign extension issue on left shift of u8
    - scsi: libsas: Add LUN number check in .slave_alloc callback
    - scsi: libfc: Fix array index out of bound exception
    - scsi: qedf: Add check to synchronize abort and flush
    - sched/fair: Fix CFS bandwidth hrtimer expiry type
    - s390: introduce proper type handling call_on_stack() macro
    - cifs: prevent NULL deref in cifs_compose_mount_options()
    - arm64: dts: armada-3720-turris-mox: add firmware node
    - firmware: turris-mox-rwtm: add marvell,armada-3700-rwtm-firmware compatible
      string
    - arm64: dts: marvell: armada-37xx: move firmware node to generic dtsi file
    - f2fs: Show casefolding support only when supported
    - usb: cdns3: Enable TDL_CHK only for OUT ep
    - Revert "UBUNTU: SAUCE: Revert "mm: memcg/slab: fix memory leak at non-root
      kmem_cache destroy""
    - mm: slab: fix kmem_cache_create failed when sysfs node not destroyed
    - dm writecache: return the exact table values that were set
    - net: dsa: mv88e6xxx: enable .port_set_policy() on Topaz
    - net: dsa: mv88e6xxx: enable .rmu_disable() on Topaz
    - net: ipv6: fix return value of ip6_skb_dst_mtu
    - netfilter: ctnetlink: suspicious RCU usage in ctnetlink_dump_helpinfo
    - net/sched: act_ct: fix err check for nf_conntrack_confirm
    - net: bridge: sync fdb to new unicast-filtering ports
    - net: bcmgenet: Ensure all TX/RX queues DMAs are disabled
    - net: ip_tunnel: fix mtu calculation for ETHER tunnel devices
    - net: moxa: fix UAF in moxart_mac_probe
    - net: qcom/emac: fix UAF in emac_remove
    - net: ti: fix UAF in tlan_remove_one
    - net: send SYNACK packet with accepted fwmark
    - net: validate lwtstate->data before returning from skb_tunnel_info()
    - net: fddi: fix UAF in fza_probe
    - dma-buf/sync_file: Don't leak fences on merge failure
    - tcp: annotate data races around tp->mtu_info
    - ipv6: tcp: drop silly ICMPv6 packet too big messages
    - bpftool: Properly close va_list 'ap' by va_end() on error
    - perf test bpf: Free obj_buf
    - udp: annotate data races around unix_sk(sk)->gso_size
    - Linux 5.4.135

  * Focal update: v5.4.134 upstream stable release (LP: #1939440)
    - KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio
    - KVM: x86: Use guest MAXPHYADDR from CPUID.0x8000_0008 iff TDP is enabled
    - KVM: X86: Disable hardware breakpoints unconditionally before kvm_x86->run()
    - scsi: core: Fix bad pointer dereference when ehandler kthread is invalid
    - tracing: Do not reference char * as a string in histograms
    - cgroup: verify that source is a string
    - fbmem: Do not delete the mode that is still in use
    - net: moxa: Use devm_platform_get_and_ioremap_resource()
    - dmaengine: fsl-qdma: check dma_set_mask return value
    - srcu: Fix broken node geometry after early ssp init
    - tty: serial: fsl_lpuart: fix the potential risk of division or modulo by
      zero
    - misc/libmasm/module: Fix two use after free in ibmasm_init_one
    - misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge
    - iio: gyro: fxa21002c: Balance runtime pm + use pm_runtime_resume_and_get().
    - iio: magn: bmc150: Balance runtime pm + use pm_runtime_resume_and_get()
    - ALSA: usx2y: Don't call free_pages_exact() with NULL address
    - Revert "ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro"
    - w1: ds2438: fixing bug that would always get page0
    - scsi: hisi_sas: Propagate errors in interrupt_init_v1_hw()
    - scsi: lpfc: Fix "Unexpected timeout" error in direct attach topology
    - scsi: lpfc: Fix crash when lpfc_sli4_hba_setup() fails to initialize the
      SGLs
    - scsi: core: Cap scsi_host cmd_per_lun at can_queue
    - ALSA: ac97: fix PM reference leak in ac97_bus_remove()
    - tty: serial: 8250: serial_cs: Fix a memory leak in error handling path
    - scsi: scsi_dh_alua: Check for negative result value
    - fs/jfs: Fix missing error code in lmLogInit()
    - scsi: megaraid_sas: Fix resource leak in case of probe failure
    - scsi: megaraid_sas: Early detection of VD deletion through RaidMap update
    - scsi: megaraid_sas: Handle missing interrupts while re-enabling IRQs
    - scsi: iscsi: Add iscsi_cls_conn refcount helpers
    - scsi: iscsi: Fix conn use after free during resets
    - scsi: iscsi: Fix shost->max_id use
    - scsi: qedi: Fix null ref during abort handling
    - mfd: da9052/stmpe: Add and modify MODULE_DEVICE_TABLE
    - mfd: cpcap: Fix cpcap dmamask not set warnings
    - ASoC: img: Fix PM reference leak in img_i2s_in_probe()
    - serial: tty: uartlite: fix console setup
    - s390/sclp_vt220: fix console name to match device
    - ALSA: sb: Fix potential double-free of CSP mixer elements
    - powerpc/ps3: Add dma_mask to ps3_dma_region
    - iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get
      fails
    - iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation
    - gpio: zynq: Check return value of pm_runtime_get_sync
    - ALSA: ppc: fix error return code in snd_pmac_probe()
    - selftests/powerpc: Fix "no_handler" EBB selftest
    - gpio: pca953x: Add support for the On Semi pca9655
    - ASoC: soc-core: Fix the error return code in
      snd_soc_of_parse_audio_routing()
    - s390/processor: always inline stap() and __load_psw_mask()
    - s390/ipl_parm: fix program check new psw handling
    - s390/mem_detect: fix diag260() program check new psw handling
    - s390/mem_detect: fix tprot() program check new psw handling
    - Input: hideep - fix the uninitialized use in hideep_nvm_unlock()
    - ALSA: bebob: add support for ToneWeal FW66
    - ALSA: usb-audio: scarlett2: Fix 18i8 Gen 2 PCM Input count
    - ALSA: usb-audio: scarlett2: Fix data_mutex lock
    - ALSA: usb-audio: scarlett2: Fix scarlett2_*_ctl_put() return values
    - usb: gadget: f_hid: fix endianness issue with descriptors
    - usb: gadget: hid: fix error return code in hid_bind()
    - powerpc/boot: Fixup device-tree on little endian
    - ASoC: Intel: kbl_da7219_max98357a: shrink platform_id below 20 characters
    - backlight: lm3630a: Fix return code of .update_status() callback
    - ALSA: hda: Add IRQ check for platform_get_irq()
    - ALSA: usb-audio: scarlett2: Fix 6i6 Gen 2 line out descriptions
    - staging: rtl8723bs: fix macro value for 2.4Ghz only device
    - intel_th: Wait until port is in reset before programming it
    - i2c: core: Disable client irq on reboot/shutdown
    - power: supply: sc27xx: Add missing MODULE_DEVICE_TABLE
    - power: supply: sc2731_charger: Add missing MODULE_DEVICE_TABLE
    - pwm: spear: Don't modify HW state in .remove callback
    - power: supply: ab8500: Avoid NULL pointers
    - power: supply: max17042: Do not enforce (incorrect) interrupt trigger type
    - power: reset: gpio-poweroff: add missing MODULE_DEVICE_TABLE
    - ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1
    - PCI/P2PDMA: Avoid pci_get_slot(), which may sleep
    - watchdog: Fix possible use-after-free in wdt_startup()
    - watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff()
    - watchdog: Fix possible use-after-free by calling del_timer_sync()
    - watchdog: imx_sc_wdt: fix pretimeout
    - x86/fpu: Return proper error codes from user access functions
    - PCI: tegra: Add missing MODULE_DEVICE_TABLE
    - orangefs: fix orangefs df output.
    - ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty
    - NFS: nfs_find_open_context() may only select open files
    - power: supply: charger-manager: add missing MODULE_DEVICE_TABLE
    - power: supply: ab8500: add missing MODULE_DEVICE_TABLE
    - pwm: img: Fix PM reference leak in img_pwm_enable()
    - pwm: tegra: Don't modify HW state in .remove callback
    - ACPI: AMBA: Fix resource name in /proc/iomem
    - ACPI: video: Add quirk for the Dell Vostro 3350
    - virtio-blk: Fix memory leak among suspend/resume procedure
    - virtio_net: Fix error handling in virtnet_restore()
    - virtio_console: Assure used length from device is limited
    - x86/signal: Detect and prevent an alternate signal stack overflow
    - f2fs: add MODULE_SOFTDEP to ensure crc32 is included in the initramfs
    - PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun
    - power: supply: rt5033_battery: Fix device tree enumeration
    - NFSv4: Initialise connection to the server in nfs4_alloc_client()
    - um: fix error return code in slip_open()
    - um: fix error return code in winch_tramp()
    - watchdog: aspeed: fix hardware timeout calculation
    - nfs: fix acl memory leak of posix_acl_create()
    - ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode
    - PCI: iproc: Fix multi-MSI base vector number allocation
    - PCI: iproc: Support multi-MSI only on uniprocessor kernel
    - x86/fpu: Limit xstate copy size in xstateregs_set()
    - pwm: imx1: Don't disable clocks at device remove time
    - virtio_net: move tx vq operation under tx queue lock
    - nvme-tcp: can't set sk_user_data without write_lock
    - ALSA: isa: Fix error return code in snd_cmi8330_probe()
    - NFSv4/pNFS: Don't call _nfs4_pnfs_v3_ds_connect multiple times
    - hexagon: use common DISCARDS macro
    - ARM: dts: gemini-rut1xx: remove duplicate ethernet node
    - reset: a10sr: add missing of_match_table reference
    - ARM: exynos: add missing of_node_put for loop iteration
    - ARM: dts: exynos: fix PWM LED max brightness on Odroid XU/XU3
    - ARM: dts: exynos: fix PWM LED max brightness on Odroid HC1
    - ARM: dts: exynos: fix PWM LED max brightness on Odroid XU4
    - memory: atmel-ebi: add missing of_node_put for loop iteration
    - reset: brcmstb: Add missing MODULE_DEVICE_TABLE
    - memory: pl353: Fix error return code in pl353_smc_probe()
    - rtc: fix snprintf() checking in is_rtc_hctosys()
    - arm64: dts: renesas: v3msk: Fix memory size
    - ARM: dts: r8a7779, marzen: Fix DU clock names
    - firmware: tegra: Fix error return code in tegra210_bpmp_init()
    - firmware: arm_scmi: Reset Rx buffer to max size during async commands
    - ARM: dts: BCM5301X: Fixup SPI binding
    - reset: bail if try_module_get() fails
    - memory: fsl_ifc: fix leak of IO mapping on probe failure
    - memory: fsl_ifc: fix leak of private memory on probe failure
    - ARM: dts: am335x: align ti,pindir-d0-out-d1-in property with dt-shema
    - ARM: dts: am437x: align ti,pindir-d0-out-d1-in property with dt-shema
    - ARM: dts: imx6q-dhcom: Fix ethernet reset time properties
    - ARM: dts: imx6q-dhcom: Fix ethernet plugin detection problems
    - ARM: dts: imx6q-dhcom: Add gpios pinctrl for i2c bus recovery
    - thermal/drivers/rcar_gen3_thermal: Fix coefficient calculations
    - firmware: turris-mox-rwtm: fix reply status decoding function
    - firmware: turris-mox-rwtm: report failures better
    - firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng
    - scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe()
    - mips: always link byteswap helpers into decompressor
    - mips: disable branch profiling in boot/decompress.o
    - MIPS: vdso: Invalid GIC access through VDSO
    - scsi: scsi_dh_alua: Fix signedness bug in alua_rtpg()
    - misc: alcor_pci: fix inverted branch condition
    - Linux 5.4.134

 -- Kelsey Skunberg <kelsey.skunberg@xxxxxxxxxxxxx>  Thu, 23 Sep 2021
10:40:49 -0600

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

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https://bugs.launchpad.net/bugs/1939915

Title:
  memory leaking when removing a profile

Status in AppArmor:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Bionic:
  Fix Committed
Status in linux source package in Focal:
  Fix Released

Bug description:
  There's a memory leak in the kernel when removing a profile.
  A simple reproducible example:

  root@ubuntu:~# echo "profile foo {}" > profile
  root@ubuntu:~# apparmor_parser profile
  root@ubuntu:~# apparmor_parser -R profile
  root@ubuntu:~# echo scan > /sys/kernel/debug/kmemleak
  root@ubuntu:~# cat /sys/kernel/debug/kmemleak
  unreferenced object 0xffff99bcf5128bb0 (size 16):
    comm "apparmor_parser", pid 1318, jiffies 4295139856 (age 33.196s)
    hex dump (first 16 bytes):
      01 00 00 00 00 00 00 00 98 1f 01 fd bc 99 ff ff  ................
    backtrace:
      [<00000000b1f68969>] kmem_cache_alloc_trace+0xd8/0x1e0
      [<0000000086ca7bd9>] aa_alloc_proxy+0x30/0x60
      [<000000000e34f34c>] aa_alloc_profile+0xd4/0x100
      [<00000000c2e34769>] unpack_profile+0x16f/0xe10
      [<0000000019033e2b>] aa_unpack+0x119/0x500
      [<00000000a97520b2>] aa_replace_profiles+0x94/0xca0
      [<000000001833f520>] policy_update+0x124/0x1e0
      [<00000000992f950e>] profile_load+0x7d/0xa0
      [<00000000db7852ce>] __vfs_write+0x1b/0x40
      [<000000004e709f5d>] vfs_write+0xb9/0x1a0
      [<00000000280db840>] SyS_write+0x5e/0xe0
      [<0000000014c5ab5d>] do_syscall_64+0x79/0x130
      [<00000000e962a389>] entry_SYSCALL_64_after_hwframe+0x41/0xa6
      [<000000009d368497>] 0xffffffffffffffff

  This issue was already fixed upstream 3622ad25d4d6 v5.8-rc1~102^2
  It still needs to be applied on xenial, bionic and focal.

  This issue could lead to a OOM and eventually DoS. We could see this
  issue happening during a test in which snaps were disconnected and
  reconnected, causing the leak every time the profile was removed.
  Since it is a refcount issue, there could be a lot of memory involved
  because the whole profile would be leaked.
  Note that only privileged users can remove a profile.

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