ISIS crashing when pkt capture traces are enabled

[sachinites]

Soft-Firewall>$ config node H4 traceoptions flag recv
Soft-Firewall>$ AddressSanitizer:DEADLYSIGNAL

=================================================================

==2627966==ERROR: AddressSanitizer: SEGV on unknown address 0x90ac00000001 (pc 0xbe95e9b2ad00 bp 0xfed77320dde0 sp 0xfed77320dde0 T11)
==2627966==The signal is caused by a READ memory access.
#0 0xbe95e9b2ad00 in pkt_block_get_pkt(pkt_block_, unsigned short) /home/asagar.linux/tcpip_stack/pkt_block.c:75
#1 0xbe95e9c39f48 in isis_print_hello_pkt_cbk(event_dispatcher_, void, unsigned int) /home/asagar.linux/tcpip_stack/Layer3/isis/isis_pkt.c:564
#2 0xbe95e9b42fa0 in nfc_invoke_notif_chain(event_dispatcher_, notif_chain_, void*, unsigned long, char*, unsigned long, task_priority_t) /home/asagar.linux/tcpip_stack/notif.c:185
#3 0xbe95e9b41208 in nfc_pkt_trace_invoke_notif_to_sbscribers(unsigned int, pkt_block_, unsigned char) /home/asagar.linux/tcpip_stack/tcpip_notif.c:127
#4 0xbe95e9b33b84 in tcp_dump_ethernet_hdr /home/asagar.linux/tcpip_stack/tcp_ip_trace.c:294
#5 0xbe95e9b3516c in tcp_dump /home/asagar.linux/tcpip_stack/tcp_ip_trace.c:444
#6 0xbe95e9b36770 in tcp_dump_recv_logger(node_, Interface, pkt_block_*, hdr_type_t) /home/asagar.linux/tcpip_stack/tcp_ip_trace.c:519