#0  __flockfile (stream=0x0) at ../nptl/sysdeps/pthread/flockfile.c:30
No locals.
#1  0x00007f083d46380c in ecryptfs_fetch_private_mnt ()
   from /usr/lib/libecryptfs.so.0
#2  0x00007f083d682d38 in pam_sm_authenticate ()
   from /lib/security/pam_ecryptfs.so
#3  0x0000000000000001 in ?? ()
#4  0x0000000000000000 in ?? ()