du crashed with SIGABRT in leave_dir()

[Markus Mueller]

echo foo | du -s

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: coreutils 8.20-3ubuntu5
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Thu Dec 19 14:18:57 2013
ExecutablePath: /usr/bin/du
InstallationDate: Installed on 2013-07-29 (142 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
ProcCmdline: du -s
Signal: 6
SourcePackage: coreutils
StacktraceTop:
 ?? ()
 ?? ()
 fts_read ()
 ?? ()
 __libc_start_main (main=0x4023e0, argc=2, ubp_av=0x7fff8437d4b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8437d4a8) at libc-start.c:260
Title: du crashed with SIGABRT in fts_read()
UpgradeStatus: Upgraded to saucy on 2013-10-31 (48 days ago)
UserGroups: adm cdrom dip fuse libvirtd lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 leave_dir (ent=<optimized out>, fts=<optimized out>) at lib/fts-cycle.c:136
 leave_dir (ent=ent@entry=0x1bdbba0, fts=0x1b604a0, fts=0x1b604a0) at lib/fts-cycle.c:125
 fts_build (sp=sp@entry=0x1b604a0, type=type@entry=3) at lib/fts.c:1337
 fts_read (sp=sp@entry=0x1b604a0) at lib/fts.c:917
 du_files (bit_flags=280, files=<optimized out>) at src/du.c:606