Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- NFS causes suspend to fail
+ 5.15.0-118: NFS causes suspend to fail
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https://bugs.launchpad.net/bugs/2076576
Title:
5.15.0-118: NFS causes suspend to fail
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