Same problems here. Get error messages like "Too many symlinks" and exactly the same as in this description. Found also, that CIFS mounts to Netapp mostly works, but df -h doesnt show them and mounts to other CIFS shares doesnt work. Verified it on 5 Linux Boxes, all started failing after patch and working again when go back to snapshot from yesterday (before kernel patch): These patches are he "bad ones":
Start-Date: 2024-04-09 06:21:54 Commandline: /usr/bin/unattended-upgrade Install: linux-image-5.15.0-102-generic:amd64 (5.15.0-102.112, automatic), linux-modules-5.15.0-102-generic:amd64 (5.15.0-102.112, automatic), linux-headers-5.15.0-102:amd64 (5.15.0-102.112, automatic), linux-modules-extra-5.15.0-102-generic:amd64 (5.15.0-102.112, automatic), linux-headers-5.15.0-102-generic:amd64 (5.15.0-102.112, automatic) Upgrade: linux-headers-generic:amd64 (5.15.0.101.98, 5.15.0.102.99), linux-generic:amd64 (5.15.0.101.98, 5.15.0.102.99), linux-image-generic:amd64 (5.15.0.101.98, 5.15.0.102.99) End-Date: 2024-04-09 06:22:23 Start-Date: 2024-04-09 06:22:26 Commandline: /usr/bin/unattended-upgrade Remove: linux-modules-5.15.0-101-generic:amd64 (5.15.0-101.111), linux-modules-extra-5.15.0-101-generic:amd64 (5.15.0-101.111), linux-image-5.15.0-101-generic:amd64 (5.15.0-101.111) End-Date: 2024-04-09 06:22:30 Start-Date: 2024-04-09 06:22:33 Commandline: /usr/bin/unattended-upgrade Remove: linux-headers-5.15.0-101-generic:amd64 (5.15.0-101.111) End-Date: 2024-04-09 06:22:34 Start-Date: 2024-04-09 06:22:36 Commandline: /usr/bin/unattended-upgrade Remove: linux-headers-5.15.0-101:amd64 (5.15.0-101.111) End-Date: 2024-04-09 06:22:37 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2060780 Title: CIFS stopped working/is unstable with kernel update to 5.15.0-102.112 Status in linux package in Ubuntu: New Bug description: Hi, updated some Ubuntu 22.04 systems to lastest available state this morning, which caused CIFS mounts (from various fileservers) to stop working. Kernel was updated to version 5.15.0-102-generic. I can mount the shares without problems (mount -t cifs), but then, df for example tells me: df: /mnt: Resource temporarily unavailable. I'm able to list and browse all the files, but accessing them (even readonly) is very unstable. Sometimes it works and sometimes it just gives me i/o errors. Switching back to 5.15.0-101-generic or 5.15.0-100-generic solves the problem and everything works again as expected. Seems like some bug has been implemented in 5.15.0-102-generic... To reproduce the problem, I started a while loop on one server to write to some file on a specific mounted CIFS share and read it from another one root@<hostname1>:~# while true; do echo "$(date) hallo" >> /mnt/hallo.txt; sleep 1 ; done -bash: /mnt/hallo.txt: Input/output error -bash: /mnt/hallo.txt: Input/output error ^C root@<hostname2>:~$ tail -f /mnt/hallo.txt Tue Apr 9 04:10:52 PM CEST 2024 hallo Tue Apr 9 04:10:53 PM CEST 2024 hallo Tue Apr 9 04:10:54 PM CEST 2024 hallo Tue Apr 9 04:10:55 PM CEST 2024 hallo Tue Apr 9 04:10:56 PM CEST 2024 hallo Tue Apr 9 04:10:57 PM CEST 2024 hallo Tue Apr 9 04:10:58 PM CEST 2024 hallo Tue Apr 9 04:10:59 PM CEST 2024 hallo Tue Apr 9 04:11:00 PM CEST 2024 hallo Tue Apr 9 04:11:01 PM CEST 2024 hallo tail: cannot determine location of '/mnt/hallo.txt'. reverting to polling: Resource temporarily unavailable Tue Apr 9 04:11:04 PM CEST 2024 hallo Tue Apr 9 04:11:05 PM CEST 2024 hallo Tue Apr 9 04:11:06 PM CEST 2024 hallo Tue Apr 9 04:11:07 PM CEST 2024 hallo Tue Apr 9 04:11:08 PM CEST 2024 hallo Tue Apr 9 04:11:09 PM CEST 2024 hallo Tue Apr 9 04:11:10 PM CEST 2024 hallo While doing this, both servers tell me, the resource is unavailable root@<hostname1>:~# df -h /mnt df: /mnt: Resource temporarily unavailable root@<hostname2>:~$ df -h /mnt df: /mnt: Resource temporarily unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060780/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
