Ubuntu
libpam-mount package

  1. Bug #1891552
  2. Comment #0

Comment 0 for bug 1891552

Revision history for this message
Daniel von Obernitz (itzonban) wrote : Segmentation Fault when using regex in (cifs) volume

Hello,

there seems to be a bug in libpam-mount in version 2.16-10 used in Ubuntu 20.04.

I want to mount a cifs volume with a regex condition.

<volume fstype="cifs" server="server.example.com" path="folder/%(USER)" mountpoint="/home/%(USER)/SUBFOLDER_%(USER)" options="domain=DOMAIN,dir_mode=0700,file_mode=0700">
  <and>
    <user regex="yes">^[a-z]{3}.*$</user>
  </and>
</volume>

At system start the system freezes completely. Then I retested during a running session on the command line and I'm getting the error message

Segmentation fault

when I login to another user.

If I remove the 'regex="yes"' everything works.
If I remove the "and" condition everything works.
If I downgrade the libpam-mount package to version 2.16-3ubuntu0.1 of Ubuntu 18.04 everything works including using the regex condition. In Ubuntu 18.04 everything worked fine as well.

Best regards
Daniel