Description of problem:
Happens on every boot. Does not prevent log in.

Version-Release number of selected component:
gdm-3.8.3-2.fc19

Additional info:
reporter:       libreport-2.1.5
backtrace_rating: 4
cmdline:        'gdm-session-worker [pam/gdm-fingerprint]'
crash_function: strlen
executable:     /usr/libexec/gdm-session-worker
kernel:         3.9.9-302.fc19.x86_64
runlevel:       unknown
uid:            0
var_log_messages: Jul 21 09:39:47 milan abrt[1287]: Saved core dump of pid 1280 (/usr/libexec/gdm-session-worker) to /var/tmp/abrt/ccpp-2013-07-21-09:39:46-1280 (22192128 bytes)

Truncated backtrace:
Thread no. 1 (9 frames)
 #0 strlen at ../sysdeps/x86_64/strlen.S:31
 #1 __strdup at strdup.c:41
 #2 pam_sm_authenticate at pam_ecryptfs.c:161
 #3 _pam_dispatch_aux at pam_dispatch.c:110
 #4 _pam_dispatch at pam_dispatch.c:407
 #5 pam_authenticate at pam_auth.c:34
 #6 gdm_session_worker_authenticate_user at gdm-session-worker.c:1159
 #7 do_authenticate at gdm-session-worker.c:2179
 #8 state_change_idle at gdm-session-worker.c:2392