Thank you for taking the time to report this issue.

Can you please use apport-collect to add the logs and other useful
information to the bug so we can look into it please?

IT should already be installed on your system, but more info can be
found here: https://github.com/canonical/apport


** Changed in: linux (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/2076576

Title:
  5.15.0-118: NFS causes suspend to fail

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When attempting to suspend, I see the following in dmesg:

  [   72.229192] PM: suspend entry (deep)
  [   72.233002] Filesystems sync: 0.003 seconds
  [   72.233311] Freezing user space processes ... (elapsed 0.001 seconds) done.
  [   72.234873] OOM killer disabled.
  [   72.234874] Freezing remaining freezable tasks ... 
  [   92.242978] Freezing of tasks failed after 20.008 seconds (1 tasks 
refusing to freeze, wq_busy=0):
  [   92.243079] task:NFSv4 callback  state:I stack:    0 pid: 1696 ppid:     2 
flags:0x00004000
  [   92.243090] Call Trace:
  [   92.243094]  <TASK>
  [   92.243099]  __schedule+0x24e/0x590
  [   92.243111]  schedule+0x69/0x110
  [   92.243119]  nfs41_callback_svc+0x179/0x180 [nfsv4]
  [   92.243202]  ? wait_woken+0x70/0x70
  [   92.243212]  ? nfs_map_gid_to_group+0x120/0x120 [nfsv4]
  [   92.243274]  kthread+0x127/0x150
  [   92.243283]  ? set_kthread_struct+0x50/0x50
  [   92.243291]  ret_from_fork+0x1f/0x30
  [   92.243302]  </TASK>

  [   92.243411] Restarting kernel threads ... done.
  [   92.243670] OOM killer enabled.
  [   92.243671] Restarting tasks ... done.
  [   92.255414] thermal thermal_zone1: failed to read out thermal zone (-61)
  [   92.255434] PM: suspend exit
  [   92.255480] PM: suspend entry (s2idle)

  
  I've restarted several times, and the problem is consistent and does not seem 
to be present in linux-image-5.15.0-117-generic

  $ lsb_release -rd
  Description:  Ubuntu 22.04.4 LTS
  Release:      22.04

  $ cat /proc/version_signature              
  Ubuntu 5.15.0-118.128-generic 5.15.160

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