~ % sudo coredumpctl gdb 5681
           PID: 5681 (vlc-cache-gen)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 11 (SEGV)
     Timestamp: Thu 2015-04-23 11:32:32 PDT (24h ago)
  Command Line: usr/lib/vlc/vlc-cache-gen -f /usr/lib/vlc/plugins
    Executable: /usr/lib/vlc/vlc-cache-gen
 Control Group: /user.slice/user-1000.slice/session-c1.scope
          Unit: session-c1.scope
         Slice: user-1000.slice
       Session: c1
     Owner UID: 1000 (mrkline)
       Boot ID: 5055ac96e52d48f0be6700e4d6e82dbb
    Machine ID: 55ce15f50fb34c2bb5ba9801ebc15bd4
      Hostname: fluke-mrkline
      Coredump: /var/lib/systemd/coredump/core.vlc-cache-gen.0.5055ac96e52d48f0be6700e4d6e82dbb.5681.1429813952000000.lz4
       Message: Process 5681 (vlc-cache-gen) of user 0 dumped core.

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Reading symbols from /usr/lib/vlc/vlc-cache-gen...(no debugging symbols found)...done.
[New LWP 5681]

warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `usr/lib/vlc/vlc-cache-gen -f /usr/lib/vlc/plugins'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f3256dad150 in __lll_unlock_elision () from /usr/lib/libpthread.so.0
(gdb) where
#0  0x00007f3256dad150 in __lll_unlock_elision () from /usr/lib/libpthread.so.0
#1  0x00007f324fbea12c in ?? () from /usr/lib/libEGL.so.1
#2  0x00007f324fb7c8c2 in ?? () from /usr/lib/libEGL.so.1
#3  0x00007fff64fd7870 in ?? ()
#4  0x00007f324fbfb831 in ?? () from /usr/lib/libEGL.so.1
#5  0x00007fff64fd7870 in ?? ()
#6  0x00007f325811c2a6 in _dl_close_worker () from /lib64/ld-linux-x86-64.so.2