Nemo prevents standby of system due to sshfs mount

[Swift42]

Distribution

Mint 22.3

Package version

6.6.3+zena

Frequency

Always

Bug description

It tooks me weeks to find this out ...

1. Access the sshfs mount via a Nemo bookmark
2. Navigate back to a local folder
3. Wait some minutes (e.g. 10 minutes)
4. Execute the standby of the system
   Result: Nemo blocks the standby. Always.

I wrote a super detailed summary about it in the repository of cinnamon-settings-daemon, here:
linuxmint/cinnamon-settings-daemon#417
I also explained why it happens (in case I am right, of course ;-) ).

And it includes a (temporary) fix.

This was the interesting part from dmesg, which also proves that first the network goes down and THEN the user space processes try to freeze:

[Di Mär 31 22:57:23 2026] r8169 0000:05:00.0 enp5s0: Link is Down
[Di Mär 31 22:57:25 2026] PM: suspend entry (deep)
[Di Mär 31 22:57:26 2026] Filesystems sync: 0.877 seconds
[Di Mär 31 22:57:26 2026] Freezing user space processes
[Di Mär 31 22:57:46 2026] Freezing user space processes failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
[Di Mär 31 22:57:46 2026] task:nemo            state:D stack:0     pid:3329  tgid:3329  ppid:2127   task_flags:0x400000 flags:0x00004006
[Di Mär 31 22:57:46 2026] Call Trace:
[Di Mär 31 22:57:46 2026]  <TASK>
[Di Mär 31 22:57:46 2026]  __schedule+0x30d/0x7a0
[Di Mär 31 22:57:46 2026]  schedule+0x27/0x90
[Di Mär 31 22:57:46 2026]  request_wait_answer+0xd8/0x260
[Di Mär 31 22:57:46 2026]  ? __pfx_autoremove_wake_function+0x10/0x10
[Di Mär 31 22:57:46 2026]  __fuse_simple_request+0xd9/0x2d0
[Di Mär 31 22:57:46 2026]  fuse_do_getattr+0xfa/0x230
[Di Mär 31 22:57:46 2026]  ? path_lookupat+0x78/0x180
[Di Mär 31 22:57:46 2026]  fuse_permission+0x139/0x210
[Di Mär 31 22:57:46 2026]  inode_permission+0xec/0x1a0
[Di Mär 31 22:57:46 2026]  do_faccessat+0x134/0x2e0
[Di Mär 31 22:57:46 2026]  __x64_sys_access+0x1c/0x30
[Di Mär 31 22:57:46 2026]  x64_sys_call+0x1856/0x2680
[Di Mär 31 22:57:46 2026]  do_syscall_64+0x80/0xa40
[Di Mär 31 22:57:46 2026]  ? srso_alias_return_thunk+0x5/0xfbef5
[Di Mär 31 22:57:46 2026]  ? srso_alias_return_thunk+0x5/0xfbef5
[Di Mär 31 22:57:46 2026]  ? arch_exit_to_user_mode_prepare.isra.0+0xd/0xe0
[Di Mär 31 22:57:46 2026]  ? srso_alias_return_thunk+0x5/0xfbef5
[Di Mär 31 22:57:46 2026]  ? do_syscall_64+0xb6/0xa40
[Di Mär 31 22:57:46 2026]  ? srso_alias_return_thunk+0x5/0xfbef5
[Di Mär 31 22:57:46 2026]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[Di Mär 31 22:57:46 2026] RIP: 0033:0x73a04151665b
[Di Mär 31 22:57:46 2026] RSP: 002b:00007ffc014bdbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
[Di Mär 31 22:57:46 2026] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000073a04151665b
[Di Mär 31 22:57:46 2026] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 00005657914471d0
[Di Mär 31 22:57:46 2026] RBP: 00007ffc014bdca0 R08: 00005657907c6010 R09: 0000000000000007
[Di Mär 31 22:57:46 2026] R10: 000056579139daa0 R11: 0000000000000246 R12: 00005657914471d0
[Di Mär 31 22:57:46 2026] R13: 000000000000000c R14: 0000565790aeefa0 R15: 0000565790e8e5e0
[Di Mär 31 22:57:46 2026]  </TASK>

Steps to reproduce

1. Access the sshfs mount via a Nemo bookmark
2. Navigate back to a local folder
3. Wait some minutes (e.g. 10 minutes)
4. Execute the standby of the system
   Result: Nemo blocks the standby. Always.

Expected behavior

The standby should execute normally.

Additional information

No response