Package: autofs Version: 5.1.2-3 Severity: normal
Bug filed against Ubuntu, also affects Debian: https://bugs.launchpad.net/ubuntu/+source/autofs/+bug/1754506 Upstream patch: https://git.kernel.org/pub/scm/linux/storage/autofs/autofs.git/commit/?id=37dd05dd1bccdedc4157902420e1da506b2bf35f A trailing slash in /etc/auto.master causes the mounted share to always appear busy and never be unmounted. To reproduce: apt install cifs-utils smbclient autofs Add this to /etc/auto.master: # trailing slash in /cifs is what triggers the bug /cifs/ /etc/auto.smb --timeout=30 Restart autofs: sudo systemctl restart autofs Assuming "cifs-server" is a valid CIFS server dns name, and "pub" is a valid share, navigate to it: cd /cifs/cifs-server/pub ls Navigate away: cd / Confirm cifs is mounted: mount -t cifs After 30s pass, it will still be mounted. If instead you use "/cifs /etc/auto.smb --timeout=30" (without the ending slash in /cifs) in /etc/auto.master, then it works. The upstream patch fixes this issue.
