*** glibc detected *** double free or corruption (fasttop): 0x0809c078 ***

Program received signal SIGABRT, Aborted.
[Switching to Thread 163849 (LWP 1434)]
0xb7c4c671 in kill () from /lib/libc.so.6
(gdb) bt
#0  0xb7c4c671 in kill () from /lib/libc.so.6
#1  0xb7d70341 in pthread_kill () from /lib/libpthread.so.0
#2  0xb7d706bb in raise () from /lib/libpthread.so.0
#3  0xb7c4c404 in raise () from /lib/libc.so.6
#4  0xb7c4d90d in abort () from /lib/libc.so.6
#5  0xb7c884a0 in mallopt () from /lib/libc.so.6
#6  0xb7c870f9 in mallopt () from /lib/libc.so.6
#7  0xb7c85dff in free () from /lib/libc.so.6
#8  0xb78c27bd in Decoder_Interface_exit (state=0x59a) at interf_dec.c:628
#9  0xb7913854 in switch_amr_destroy (codec=0xb7736cbc) at mod_amr.c:128
#10 0xb7f5bbcb in switch_core_codec_destroy (codec=0x809ae50) at switch_core.c:526
#11 0xb7a89a19 in __osip_rfc3264_print_codecs () from /opt/freeswitch/mod/mod_exosip.so
#12 0xb7f5ff9f in switch_core_session_run (session=0x8098768) at switch_core.c:2249
#13 0xb7f605e7 in switch_core_session_thread (thread=0x0, obj=0xb7d75324) at switch_core.c:2641
#14 0xb7ec716a in dummy_worker () from /opt/freeswitch/lib/libapr-1.so.0
#15 0xb7d6d33d in pthread_start_thread () from /lib/libpthread.so.0
#16 0xb7d6d4e2 in pthread_start_thread_event () from /lib/libpthread.so.0
#17 0xb7cd90ca in clone () from /lib/libc.so.6