[Crash-utility] Fix in bt for ARM64

Hi Dave I found an ARM64 problem for bt when a function belongs to a module. Printout before fix given below: #16 [ffffffc0be96f8d0] __this_module at ffffffbffc15a2f8 [wlan] #17 [ffffffc0be96f9b0] __this_module at ffffffbffc161b18 [wlan] #18 [ffffffc0be96f9c0] __this_module at ffffffbffc16033c [wlan] #19 [ffffffc0be96fa10] __this_module at ffffffbffc1630f8 [wlan] #20 [ffffffc0be96fab0] __this_module at ffffffbffc156ff8 [wlan] #21 [ffffffc0be96faf0] __this_module at ffffffbffc15aa58 [wlan] #22 [ffffffc0be96fb20] __this_module at ffffffbffc15bfc8 [wlan] #23 [ffffffc0be96fb60] __this_module at ffffffbffc115fac [wlan] #24 [ffffffc0be96fb90] tasklet_action at ffffffc000223738 #25 [ffffffc0be96fbb0] __do_softirq at ffffffc000222e94 Printout after fix: #16 [ffffffc0be96f8d0] dhd_bus_rx_frame at ffffffbffc15a2f8 [wlan] #17 [ffffffc0be96f9b0] dhd_update_flow_prio_map at ffffffbffc161b18 [wlan] #18 [ffffffc0be96f9c0] dhd_update_flow_prio_map at ffffffbffc16033c [wlan] #19 [ffffffc0be96fa10] dhd_prot_process_ctrlbuf at ffffffbffc1630f8 [wlan] #20 [ffffffc0be96fab0] dhd_bus_ringbell at ffffffbffc156ff8 [wlan] #21 [ffffffc0be96faf0] dhd_bus_console_in at ffffffbffc15aa58 [wlan] #22 [ffffffc0be96fb20] dhd_bus_dpc at ffffffbffc15bfc8 [wlan] #23 [ffffffc0be96fb60] dhd_sched_dpc at ffffffbffc115fac [wlan] #24 [ffffffc0be96fb90] tasklet_action at ffffffc000223738 #25 [ffffffc0be96fbb0] __do_softirq at ffffffc000222e94 static int arm64_print_stackframe_entry(struct bt_info *bt, int level, struct arm64_stackframe *frame) { char *name, *name_plus_offset; ulong symbol_offset; struct syment *sp; struct load_module *lm; char buf[BUFSIZE]; name = closest_symbol(frame->pc); name_plus_offset = NULL; if (bt->flags & BT_SYMBOL_OFFSET) { /*ADDED*/ if (module_symbol(frame->pc, NULL, &lm, NULL, 0)) sp = value_search_module(frame->pc, &symbol_offset); else /*END ADDED*/ sp = value_search(frame->pc, &symbol_offset); You probably also want to prevent calling module_symbol a second time later in the function. Jan Jan Karlsson Senior Software Engineer System Assurance Sony Mobile Communications Tel: +46 703 062 174 jan.karlsson@sonymobile.com<mailto:Firstname.Lastname@sonymobile.com> sonymobile.com<http://sonymobile.com/> [cid:image001.gif@01D08BE8.D6EEC470]