Sudo segfaults on clean install of 11.2

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1

I’ve searched for this and it seems as though I’m the only one having problems : bizarre!
I did a net-install upgrade of a clean install of 11.2RC2 and found that sudo prompted me for a password (for a PAM module) and then segfaulted. I assumed this was something to to with the upgrade and so did a clean install of 11.2, 64bit from the DVD and the same thing happens. RC2 was fine and all the desktop privilage escalation works without problem. Sudo even segfaults when I run it as root.
No idea how to start debugging this problem, but I can always go back to using su -l for now.
Thanks for any pointers,
Charles.

2

The password prompt is for pam_mount, which correctly prompts if the incorrect pw is given but segfaults on the right one.
sudo with no arguments behaves as expected.

3

I have found this is a known bug with sudo using pam_mount
The solution is to comment out this line in /etc/pam.d/sudo

session  optional	pam_mount.so

This still prompts for the pam_mount password, rather than the root password which is potentially confusing, so I would also comment out

auth     optional	pam_mount.so

for good measure.