Hi Yun Chen, Welcome to Microsoft Q&A and Thanks for posting your query here!
This seems to be a known bug/issue for the kernel version linux-image-6.2.0-1016-azure.
Hence, either you can manually rollback to the previous kernel version following the below document:
vi /etc/default/grub GRUB_DEFAULT="1>2" sudo update-grub restart
Or the current workaround for new (i.e. no rollback kernel option) systems is to install the below module as cifs.ko is provided in the linux-modules-extra-azure module:
apt install -y linux-modules-extra-azure
Apparently the problem is that, between 6.2.0-1015 and 6.2.0-1016, the CIFS module was moved from fs/cifs/* to fs/smb/client/, fs/smb/common/ and fs/smb/server/*. The inclusion list (root/debian.azure-6.2/control.d/azure.inclusion-list) was not updated for this change, so the module is not included in the linux-modules-6.2.0-1026-azure package.
Please let us know if you have any further queries. I’m happy to assist you further.
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