df says Resource temporarily unavailable after kernel upgrade to 5.15.0-102

[keubu]

Hi, updagraded my Ubuntu 20.04 machine to the latest v5.15.0-102 kernel and found my CIFS mounted volumes reporting the following:

df: /home/user/share: Resource temporarily unavailable

Others are reporting the same problem, e.g:

Problem: df says Resource temporarily unavailable.
https://forums.linuxmint.com/viewtopic.php?p=2454229#p2454229

It looks like there's a fix that's yet to make it to Ubuntu kernels:

[PATCH 5.15.y 0/1] smb: client: fix "df: Resource temporarily unavailable" on 5.15 stable kernel
https://lore.kernel.org/lkml/2024020616 ... nux.org/T/

Booting into v5.15.0-101.11 works fine which, according to the Ubuntu changelog, was released the same day as 5.15.0-102.112:

https://launchpad.net/ubuntu/+source/linux/+changelog

Could this be looked at please?

Thanks in advance.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[spencer (mspencerl87)]

I'm also seeing the same on Ubuntu Server 22.04.4 on the latest patch from 4/8

[David UB Vaughan (mintuser2024)]

I'm seeing the same on Linux Mint 21.1 Cinnamon 5.6.8 with kernel 5.15.0-102. Also noted that Thunderbird crashes on this kernal version if its profiles are mounted via cifs.

appears to be a permissions issue

kernel: [ 9815.799722] audit: type=1400 audit(1711979062.969:153): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/Working/Thunderbird/profiles.ini" pid=6651 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000

[Michael Quaintance (michaelquaintance)]

Also seeing the same, Ubuntu 22.04.4 LTS (GNU/Linux 5.15.0-102-generic)

[Michael Quaintance (michaelquaintance)]

Interesting output from dmesg while trying to mount the share.

[ 59.143920] CIFS: VFS: Autodisabling the use of server inode numbers on \\192.168.3.7\public
[ 59.143937] CIFS: VFS: The server doesn't seem to support them properly or the files might be on different servers (DFS)
[ 59.143946] CIFS: VFS: Hardlinks will not be recognized on this mount. Consider mounting with the "noserverino" option to silence this message.
[ 68.859538] CIFS: VFS: \\192.168.3.7 Error -104 sending data on socket to server
[ 216.346839] CIFS: Attempting to mount \\192.168.3.7\public
[ 216.576054] CIFS: VFS: parse_server_interfaces: malformed interface info
[ 219.006807] CIFS: Attempting to mount \\192.168.3.7\public
[ 219.152047] CIFS: VFS: parse_server_interfaces: malformed interface info

I've been running this for approximately a year, no issues so far.

[Tim Dee (entropy1024)]

I'm getting the same issue on my Ubuntu 20.04.4 from an update on the 9th April.

[Michael Quaintance (michaelquaintance)]

Fixing the link to the patch:
https://<email address hidden>/T/

[Sparkey (sparkey70)]

Seeing this as well. Rolling from 5.15.0-102-generic to 5.15.0-101-generic kernel works.

[Matthew Ruffell (mruffell)]

Hi everyone, I will provide updates on the other bug 2060780.