Hallo,
* Felix Lechner [Fri, Dec 23 2016, 09:40:48AM]:
> Package: encfs
> Version: 1.9.1-3
> Severity: important
> 
> When an encrypted home directory is on kerberized NFS4, upgrading to version 
> 1.9.1-3 in testing causes errors not present in the previous version.
> Logging in via terminal works, but not via GNOME/gdm 3.

And via other DM, like lxdm?

> Also, at some point an error appears when accessing the cleartext mountpoint. 
> Then the "Transport endpoint is not connected" (even though
> the default idle unmount setting was disabled in 
> /etc/security/pam_encfs.conf). Furthemore, some subsequent mount attempts via 
> PAM seem to trigger

This sounds like it might be an issue of libpam-encfs which is not my
package.

> segfaults like the ones below. It is currently unclear if the idle override 
> is being ignored or there is another, potentially more serious problem.
> 
> Dec 23 08:27:01 lechner-desktop kernel: [  192.786639] encfs[2308]: segfault 
> at 0 ip 00007fce39883f36 sp 00007fce37b4d970 error 4 in 
> libencfs.so.1.9.1[7fce3982a000+75000]

Now this sounds more like an encfs issue. Please enable coredumps (see
below for example) and mount manually and when it crashes, please send the
dump via some secure channel.

ulimit -c unlimited >/dev/null 2>&1
echo /tmp/core-%e-%s-%u-%g-%p-%t > /proc/sys/kernel/core_pattern

Or install the -dbg package from
http://debug.mirrors.debian.org/debian-debug/ and debug locally.

(You might also configure it via /etc/sysctl.conf but not sure how to
change ulimit correctly in pam context).

Regards,
Eduard.

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