(gdb) backtrace 
#0  0x00508424 in __kernel_vsyscall ()
#1  0x00766b91 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2  0x0076846a in abort () at abort.c:92
#3  0x007a490d in __libc_message (do_abort=2, fmt=0x87a664 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:186
#4  0x007aad51 in malloc_printerr (action=<value optimized out>, str=<value optimized out>, ptr=0x80b1328) at malloc.c:6267
#5  0x0805257d in pbb_internal_free_addresses (writer=0x809ec28, msg=0x80afb18) at packetbb/src/pbb_writer.c:676
#6  0x0804dd5b in pbb_writer_create_message (writer=0x809ec28, msgid=5 '\005', useIf=0x804dd69 <pbb_writer_singleif_selector>, param=0x80b0bd8)
    at packetbb/src/pbb_msg_generator.c:318
#7  0x08073446 in pbb_writer_create_message_singleif (writer=0x809ec28, msgid=5 '\005', interf=0x80b0bd8) at ./packetbb/src/pbb_writer.h:459
#8  0x08073df7 in hello_gen_event (data=0x80aff38) at src/nhdp/nhdp.c:285
#9  0x0807030d in walk_timers (last_run=0x809c460) at src/scheduler.c:658
#10 0x0806ff0f in olsr_scheduler () at src/scheduler.c:520
#11 0x08058f8c in main (argc=6, argv=0xbffff724) at src/main.c:428