Once again, another access violation

#0  0x080c22fa in violence_update () at fight.c:373
373                         ch->desc->character->desc = ch->desc;
(gdb) bt
#0  0x080c22fa in violence_update () at fight.c:373
#1  0x0812c468 in update_handler () at update.c:2023
#2  0x080a9cba in game_loop () at comm.c:690
#3  0x080a95b1 in main (argc=2, argv=0xbffff5d0) at comm.c:304
#4  0x42015967 in __libc_start_main () from /lib/i686/libc.so.6
(gdb) print ch
$1 = (struct char_data *) 0x8349ef0
(gdb) print ch->name
$2 = 0x834fb20 "Arion"
(gdb) print ch->desc
$3 = (struct descriptor_data *) 0x836a390
(gdb) print ch->desc->port
$4 = 4839
(gdb) ch->desc->character->desc
Undefined command: "ch-".  Try "help".
(gdb) print ch->desc->character->desc
Cannot access memory at address 0x4c
(gdb)

(gdb) print ch->desc->character
$1 = (struct char_data *) 0x0