Ubuntu
linux-azure package

  1. Bug #2042092
  2. Comment #2

Comment 2 for bug 2042092

Revision history for this message
Kalen Emhof (kemhof) wrote (last edit ):

I can confirm this:

6.2.0-1015 Kernel
~# uname -a
Linux pi-geosvrd01 6.2.0-1015-azure #15~22.04.1-Ubuntu SMP Fri Oct 6 13:20:44 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

~# lsmod | grep cifs
cifs 1363968 2
cifs_arc4 16384 1 cifs
cifs_md4 16384 1 cifs
fscache 380928 1 cifs

~# ls -lh /lib/modules/6.2.0-1015-azure/kernel/fs/cifs
-rw-r--r-- 1 root root 2.8M Oct 6 07:20 cifs.ko

~# ls -lh /lib/modules/6.2.0-1015-azure/kernel/fs
total 128K
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 9p
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 autofs
-rw-r--r-- 1 root root 38K Oct 6 07:20 binfmt_misc.ko
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 btrfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 cachefiles
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 ceph
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 cifs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 dlm
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 fat
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 fscache
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 fuse
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 isofs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 lockd
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 netfs
drwxr-xr-x 5 root root 4.0K Oct 31 09:00 nfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 nfs_common
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 nfsd
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 nls
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 overlayfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 smbfs_common
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 udf
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 ufs
drwxr-xr-x 2 root root 4.0K Oct 31 09:00 xfs

After installing the 6.2.0-1016 kernel and rebooting, system is unable to mount CIFS filesystems:
~# uname -a
Linux pi-geosvrd01 6.2.0-1016-azure #16~22.04.1-Ubuntu SMP Tue Oct 10 17:11:51 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

~# modprobe cifs
modprobe: FATAL: Module cifs not found in directory /lib/modules/6.2.0-1016-azure

~#
mount error: cifs filesystem not supported by the system
mount error(19): No such device

~# ls -lh /lib/modules/6.2.0-1016-azure/kernel/fs/
total 120K
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 9p
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 autofs
-rw-r--r-- 1 root root 38K Oct 10 11:03 binfmt_misc.ko
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 btrfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 cachefiles
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 ceph
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 dlm
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 fat
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 fscache
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 fuse
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 isofs
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 lockd
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 netfs
drwxr-xr-x 5 root root 4.0K Oct 31 09:36 nfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 nfs_common
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 nfsd
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 nls
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 overlayfs
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 udf
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 ufs
drwxr-xr-x 2 root root 4.0K Oct 31 09:36 xfs