gdb bt

# systemd-coredumpctl gdb
TIME                                         PID   UID   GID SIG EXE
             mar. 2013-03-26 16:27:13 CET   2501     0     0  11 /usr/sbin/tcpdump
GNU gdb (GDB) 7.5.1
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/tcpdump...(no debugging symbols found)...done.
[New LWP 2501]

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/sbin/tcpdump icmp'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007feae033fb50 in __opendirat () from /usr/lib/libc.so.6
(gdb) bt
#0  0x00007feae033fb50 in __opendirat () from /usr/lib/libc.so.6
#1  0x00007feadfc68e9e in ?? () from /usr/lib/libusb-1.0.so.0
#2  0x00007feadfc6153c in libusb_get_device_list () from /usr/lib/libusb-1.0.so.0
#3  0x00007feae0647a9f in canusb_platform_finddevs () from /usr/lib/libpcap.so.1
#4  0x00007feae0644cf4 in pcap_platform_finddevs () from /usr/lib/libpcap.so.1
#5  0x00007feae0647e93 in pcap_findalldevs () from /usr/lib/libpcap.so.1
#6  0x00007feae0649bd6 in pcap_lookupdev () from /usr/lib/libpcap.so.1
#7  0x0000000000404754 in ?? ()
#8  0x00007feae02aba15 in __libc_start_main () from /usr/lib/libc.so.6
#9  0x0000000000404d5d in ?? ()
#10 0x00007ffff4cec878 in ?? ()
#11 0x0000000000000000 in ?? ()
(gdb) quit