apport information

** Attachment added: "CurrentDmesg.txt"
   
https://bugs.launchpad.net/bugs/2024879/+attachment/5681590/+files/CurrentDmesg.txt

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https://bugs.launchpad.net/bugs/2024879

Title:
   KVM-GUEST Workqueue: writeback wb_workfn (flush-8:0)

Status in linux package in Ubuntu:
  New

Bug description:
  OS:
  Ubuntu 5.15.0-73.80-generic 5.15.98
  VERSION="22.04.2 LTS (Jammy Jellyfish)"
  Ubuntu Cloud

  Background Disk: rbd
  KVM: Proxmox VE

  [   30.444138] loop4: detected capacity change from 0 to 8
  [143428.917901] INFO: task kworker/u8:1:2954 blocked for more than 120 
seconds.
  [143428.919516]       Not tainted 5.15.0-73-generic #80-Ubuntu
  [143428.920692] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [143428.922329] task:kworker/u8:1    state:D stack:    0 pid: 2954 ppid:     
2 flags:0x00004000
  [143428.922342] Workqueue: writeback wb_workfn (flush-8:0)
  [143428.922381] Call Trace:
  [143428.922386]  <TASK>
  [143428.922412]  __schedule+0x24e/0x590
  [143428.922439]  schedule+0x69/0x110
  [143428.922443]  io_schedule+0x46/0x80
  [143428.922446]  ? wbt_cleanup_cb+0x20/0x20
  [143428.922464]  rq_qos_wait+0xd0/0x170
  [143428.922473]  ? wbt_rqw_done+0x110/0x110
  [143428.922476]  ? sysv68_partition+0x280/0x280
  [143428.922480]  ? wbt_cleanup_cb+0x20/0x20
  [143428.922482]  wbt_wait+0x9f/0xf0
  [143428.922485]  __rq_qos_throttle+0x28/0x40
  [143428.922489]  blk_mq_submit_bio+0x127/0x610
  [143428.922496]  __submit_bio+0x1ee/0x220
  [143428.922503]  ? mpage_release_unused_pages+0x219/0x240
  [143428.922541]  submit_bio_noacct+0xc0/0x120
  [143428.922545]  submit_bio+0x4a/0x130
  [143428.922548]  ext4_io_submit+0x4c/0x60
  [143428.922553]  ext4_writepages+0x231/0x880
  [143428.922557]  ? kvm_sched_clock_read+0x11/0x20
  [143428.922573]  ? raw_spin_rq_lock_nested+0x17/0x80
  [143428.922587]  ? newidle_balance+0x31d/0x470
  [143428.922595]  do_writepages+0xda/0x200
  [143428.922605]  ? mpage_map_and_submit_extent+0x4f0/0x4f0
  [143428.922609]  ? do_writepages+0xda/0x200
  [143428.922611]  ? psi_task_switch+0xc6/0x220
  [143428.922617]  ? raw_spin_rq_unlock+0x10/0x30
  [143428.922619]  ? finish_task_switch.isra.0+0x7e/0x280
  [143428.922623]  __writeback_single_inode+0x44/0x290
  [143428.922630]  writeback_sb_inodes+0x22a/0x4e0
  [143428.922635]  __writeback_inodes_wb+0x56/0xf0
  [143428.922639]  wb_writeback+0x1cc/0x290
  [143428.922643]  wb_do_writeback+0x1a0/0x280
  [143428.922647]  wb_workfn+0x77/0x260
  [143428.922649]  ? psi_task_switch+0xc6/0x220
  [143428.922651]  ? raw_spin_rq_unlock+0x10/0x30
  [143428.922654]  ? finish_task_switch.isra.0+0x7e/0x280
  [143428.922657]  process_one_work+0x22b/0x3d0
  [143428.922662]  worker_thread+0x53/0x420
  [143428.922664]  ? process_one_work+0x3d0/0x3d0
  [143428.922666]  kthread+0x12a/0x150
  [143428.922681]  ? set_kthread_struct+0x50/0x50
  [143428.922685]  ret_from_fork+0x22/0x30
  [143428.922697]  </TASK>
  [1162819.008697] loop4: detected capacity change from 0 to 129936
  [1274712.829337] loop5: detected capacity change from 0 to 109072
  [1274713.891842] kauditd_printk_skb: 21 callbacks suppressed
  ---
  ProblemType: Bug
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jun  5 14:29 seq
   crw-rw---- 1 root audio 116, 33 Jun  5 14:29 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CRDA: N/A
  CasperMD5CheckResult: unknown
  DistroRelease: Ubuntu 22.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb:
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd QEMU USB Tablet
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Lsusb-t:
   /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
       |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=vt220
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-73-generic 
root=UUID=11ac2e1a-fac8-4e81-904d-fe4e9d32b4b3 ro console=tty1 console=ttyS0
  ProcVersionSignature: Ubuntu 5.15.0-73.80-generic 5.15.98
  RebootRequiredPkgs: Error: path contained symlinks.
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-73-generic N/A
   linux-backports-modules-5.15.0-73-generic  N/A
   linux-firmware                             N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  Tags:  jammy uec-images
  Uname: Linux 5.15.0-73-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
  _MarkForUpload: True
  dmi.bios.date: 04/01/2014
  dmi.bios.release: 0.0
  dmi.bios.vendor: SeaBIOS
  dmi.bios.version: rel-1.16.1-0-g3208b098f51a-prebuilt.qemu.org
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-i440fx-7.2
  dmi.modalias: 
dmi:bvnSeaBIOS:bvrrel-1.16.1-0-g3208b098f51a-prebuilt.qemu.org:bd04/01/2014:br0.0:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-7.2:cvnQEMU:ct1:cvrpc-i440fx-7.2:sku:
  dmi.product.name: Standard PC (i440FX + PIIX, 1996)
  dmi.product.version: pc-i440fx-7.2
  dmi.sys.vendor: QEMU

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