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

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https://bugs.launchpad.net/bugs/2049049

Title:
  Focal update: v5.4.261 upstream stable release

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  Fix Committed

Bug description:
  
      SRU Justification

      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The following upstream
         stable patches should be included in the Ubuntu kernel:

         v5.4.261 upstream stable release
         from git://git.kernel.org/

  vfs: fix readahead(2) on block devices
  genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()
  i40e: fix potential memory leaks in i40e_remove()
  tcp: call tcp_try_undo_recovery when an RTOd TFO SYNACK is ACKed
  wifi: rtw88: debug: Fix the NULL vs IS_ERR() bug for debugfs_create_file()
  wifi: mt76: mt7603: rework/fix rx pse hang check
  tcp_metrics: add missing barriers on delete
  tcp_metrics: properly set tp->snd_ssthresh in tcp_init_metrics()
  tcp_metrics: do not create an entry from tcp_init_metrics()
  wifi: rtlwifi: fix EDCA limit set by BT coexistence
  can: dev: can_restart(): don't crash kernel if carrier is OK
  can: dev: can_restart(): fix race condition between controller restart and 
netif_carrier_on()
  thermal: core: prevent potential string overflow
  r8169: use tp_to_dev instead of open code
  r8169: fix rare issue with broken rx after link-down on RTL8125
  chtls: fix tp->rcv_tstamp initialization
  tcp: Remove one extra ktime_get_ns() from cookie_init_timestamp
  tcp: fix cookie_init_timestamp() overflows
  ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias()
  ipv6: avoid atomic fragment on GSO packets
  net: add DEV_STATS_READ() helper
  ipvlan: properly track tx_errors
  regmap: debugfs: Fix a erroneous check after snprintf()
  clk: qcom: clk-rcg2: Fix clock rate overflow for high parent frequencies
  clk: qcom: gcc-sm8150: use ARRAY_SIZE instead of specifying num_parents
  clk: qcom: gcc-sm8150: Fix gcc_sdcc2_apps_clk_src
  clk: imx: Select MXC_CLK for CLK_IMX8QXP
  clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
  clk: npcm7xx: Fix incorrect kfree
  clk: mediatek: clk-mt6779: Add check for mtk_alloc_clk_data
  clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
  clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
  clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data
  clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
  platform/x86: wmi: Fix probe failure when failing to register WMI devices
  platform/x86: wmi: remove unnecessary initializations
  platform/x86: wmi: Fix opening of char device
  hwmon: (coretemp) Fix potentially truncated sysfs attribute name
  drm/rockchip: vop: Fix reset of state in duplicate state crtc funcs
  drm/rockchip: vop: Fix call to crtc reset helper
  drm/radeon: possible buffer overflow
  drm/rockchip: cdn-dp: Fix some error handling paths in cdn_dp_probe()
  arm64: dts: qcom: sdm845-mtp: fix WiFi configuration
  ARM: dts: qcom: mdm9615: populate vsdcc fixed regulator
  soc: qcom: llcc cleanup to get rid of sdm845 specific driver file
  UBUNTU: [Config] remove CONFIG_QCOM_SDM845_LLCC
  soc: qcom: Rename llcc-slice to llcc-qcom
  UBUNTU: [Config] remove llcc-slice module
  soc: qcom: llcc: Handle a second device without data corruption
  firmware: ti_sci: Replace HTTP links with HTTPS ones
  firmware: ti_sci: Mark driver as non removable
  clk: scmi: Free scmi_clk allocated when the clocks with invalid info are 
skipped
  hwrng: geode - fix accessing registers
  libnvdimm/of_pmem: Use devm_kstrdup instead of kstrdup and check its return 
value
  sched/rt: Provide migrate_disable/enable() inlines
  nd_btt: Make BTT lanes preemptible
  crypto: caam/qi2 - fix Chacha20 + Poly1305 self test failure
  crypto: caam/jr - fix Chacha20 + Poly1305 self test failure
  HID: cp2112: Use irqchip template
  hid: cp2112: Fix duplicate workqueue initialization
  ARM: 9321/1: memset: cast the constant byte to unsigned char
  ext4: move 'ix' sanity check to corrent position
  scsi: ufs: core: Leave space for '\0' in utf8 desc string
  RDMA/hfi1: Workaround truncation compilation error
  sh: bios: Revive earlyprintk support
  ASoC: Intel: Skylake: Fix mem leak when parsing UUIDs fails
  ASoC: ams-delta.c: use component after check
  mfd: dln2: Fix double put in dln2_probe
  leds: pwm: simplify if condition
  leds: pwm: convert to atomic PWM API
  leds: pwm: Don't disable the PWM when the LED should be off
  ledtrig-cpu: Limit to 8 CPUs
  leds: trigger: ledtrig-cpu:: Fix 'output may be truncated' issue for 'cpu'
  tty: tty_jobctrl: fix pid memleak in disassociate_ctty()
  usb: dwc2: fix possible NULL pointer dereference caused by driver concurrency
  dmaengine: ti: edma: handle irq_of_parse_and_map() errors
  misc: st_core: Do not call kfree_skb() under spin_lock_irqsave()
  tools: iio: privatize globals and functions in iio_generic_buffer.c file
  tools: iio: iio_generic_buffer: Fix some integer type and calculation
  tools: iio: iio_generic_buffer ensure alignment
  USB: usbip: fix stub_dev hub disconnect
  dmaengine: pxa_dma: Remove an erroneous BUG_ON() in pxad_free_desc()
  f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
  modpost: fix tee MODULE_DEVICE_TABLE built on big-endian host
  powerpc/xive: Fix endian conversion size
  powerpc/imc-pmu: Use the correct spinlock initializer.
  powerpc/pseries: fix potential memory leak in init_cpu_associativity()
  i3c: Fix potential refcount leak in i3c_master_register_new_i3c_devs
  rtc: pcf85363: fix wrong mask/val parameters in regmap_update_bits call
  pcmcia: cs: fix possible hung task and memory leak pccardd()
  pcmcia: ds: fix refcount leak in pcmcia_device_add()
  pcmcia: ds: fix possible name leak in error path in pcmcia_device_add()
  media: bttv: fix use after free error due to btv->timeout timer
  media: s3c-camif: Avoid inappropriate kfree()
  media: dvb-usb-v2: af9035: fix missing unlock
  regmap: prevent noinc writes from clobbering cache
  pwm: sti: Avoid conditional gotos
  pwm: sti: Reduce number of allocations and drop usage of chip_data
  pwm: brcmstb: Utilize appropriate clock APIs in suspend/resume
  Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()
  llc: verify mac len before reading mac header
  tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
  inet: shrink struct flowi_common
  dccp: Call security_inet_conn_request() after setting IPv4 addresses.
  dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.
  Fix termination state for idr_for_each_entry_ul()
  net: stmmac: xgmac: Enable support for multiple Flexible PPS outputs
  net/smc: fix dangling sock under state SMC_APPFINCLOSEWAIT
  tg3: power down device only on SYSTEM_POWER_OFF
  r8169: respect userspace disabling IFF_MULTICAST
  netfilter: xt_recent: fix (increase) ipv6 literal buffer length
  netfilter: nft_redir: use `struct nf_nat_range2` throughout and deduplicate 
eval call-backs
  netfilter: nat: fix ipv6 nat redirect with mapped and scoped addresses
  drm/syncobj: fix DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE
  spi: spi-zynq-qspi: add spi-mem to driver kconfig dependencies
  fbdev: imsttfb: Fix error path of imsttfb_probe()
  fbdev: imsttfb: fix a resource leak in probe
  fbdev: fsl-diu-fb: mark wr_reg_wa() static
  Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
  btrfs: use u64 for buffer sizes in the tree search ioctls
  Linux 5.4.261
  UBUNTU: Upstream stable to v5.4.261

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