711 static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)  in sym_name()  argument
714 		return elf->strtab + sym->st_name;  in sym_name()
774 static void check_section(const char *modname, struct elf_info *elf,  in check_section()  argument
777 	const char *sec = sech_name(elf, sechdr);  in check_section()
1062 static inline int is_valid_name(struct elf_info *elf, Elf_Sym *sym)  in is_valid_name()  argument
1064 	const char *name = elf->strtab + sym->st_name;  in is_valid_name()
1072 static Elf_Sym *find_nearest_sym(struct elf_info *elf, Elf_Addr addr,  in find_nearest_sym()  argument
1079 	bool is_arm = (elf->hdr->e_machine == EM_ARM);  in find_nearest_sym()
1081 	for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {  in find_nearest_sym()
1082 		if (get_secindex(elf, sym) != secndx)  in find_nearest_sym()
1084 		if (!is_valid_name(elf, sym))  in find_nearest_sym()
1114 static Elf_Sym *find_fromsym(struct elf_info *elf, Elf_Addr addr,  in find_fromsym()  argument
1117 	return find_nearest_sym(elf, addr, secndx, false, ~0);  in find_fromsym()
1120 static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym)  in find_tosym()  argument
1123 	if (is_valid_name(elf, sym))  in find_tosym()
1130 	return find_nearest_sym(elf, addr, get_secindex(elf, sym), true, 20);  in find_tosym()
1133 static bool is_executable_section(struct elf_info *elf, unsigned int secndx)  in is_executable_section()  argument
1135 	if (secndx >= elf->num_sections)  in is_executable_section()
1138 	return (elf->sechdrs[secndx].sh_flags & SHF_EXECINSTR) != 0;  in is_executable_section()
1141 static void default_mismatch_handler(const char *modname, struct elf_info *elf,  in default_mismatch_handler()  argument
1151 	from = find_fromsym(elf, faddr, fsecndx);  in default_mismatch_handler()
1152 	fromsym = sym_name(elf, from);  in default_mismatch_handler()
1154 	tsym = find_tosym(elf, taddr, tsym);  in default_mismatch_handler()
1155 	tosym = sym_name(elf, tsym);  in default_mismatch_handler()
1174 		else if (is_executable_section(elf, get_secindex(elf, tsym)))  in default_mismatch_handler()
1189 static void check_export_symbol(struct module *mod, struct elf_info *elf,  in check_export_symbol()  argument
1199 	label = find_fromsym(elf, faddr, elf->export_symbol_secndx);  in check_export_symbol()
1200 	label_name = sym_name(elf, label);  in check_export_symbol()
1215 	name = sym_name(elf, sym);  in check_export_symbol()
1222 	data = sym_get_data(elf, label);	/* license */  in check_export_symbol()
1246 	if (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64 &&  in check_export_symbol()
1247 	    elf->hdr->e_machine == EM_PARISC &&  in check_export_symbol()
1259 static void check_section_mismatch(struct module *mod, struct elf_info *elf,  in check_section_mismatch()  argument
1264 	const char *tosec = sec_name(elf, get_secindex(elf, sym));  in check_section_mismatch()
1267 	if (module_enabled && elf->export_symbol_secndx == fsecndx) {  in check_section_mismatch()
1268 		check_export_symbol(mod, elf, faddr, tosec, sym);  in check_section_mismatch()
1276 	default_mismatch_handler(mod->name, elf, mismatch, sym,  in check_section_mismatch()
1450 static void get_rel_type_and_sym(struct elf_info *elf, uint64_t r_info,  in get_rel_type_and_sym()  argument
1461 	bool is_64bit = (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64);  in get_rel_type_and_sym()
1463 	if (elf->hdr->e_machine == EM_MIPS && is_64bit) {  in get_rel_type_and_sym()
1485 static void section_rela(struct module *mod, struct elf_info *elf,  in section_rela()  argument
1490 	const char *fromsec = sec_name(elf, fsecndx);  in section_rela()
1491 	Elf_Rela *start = (void *)elf->hdr + sechdr->sh_offset;  in section_rela()
1503 		get_rel_type_and_sym(elf, rela->r_info, &r_type, &r_sym);  in section_rela()
1507 		switch (elf->hdr->e_machine) {  in section_rela()
1520 		check_section_mismatch(mod, elf, elf->symtab_start + r_sym,  in section_rela()
1525 static void section_rel(struct module *mod, struct elf_info *elf,  in section_rel()  argument
1530 	const char *fromsec = sec_name(elf, fsecndx);  in section_rel()
1531 	Elf_Rel *start = (void *)elf->hdr + sechdr->sh_offset;  in section_rel()
1545 		get_rel_type_and_sym(elf, rel->r_info, &r_type, &r_sym);  in section_rel()
1547 		loc = sym_get_data_by_offset(elf, fsecndx, r_offset);  in section_rel()
1548 		tsym = elf->symtab_start + r_sym;  in section_rel()
1550 		switch (elf->hdr->e_machine) {  in section_rel()
1564 		check_section_mismatch(mod, elf, tsym,  in section_rel()
1581 static void check_sec_ref(struct module *mod, struct elf_info *elf)  in check_sec_ref()  argument
1584 	Elf_Shdr *sechdrs = elf->sechdrs;  in check_sec_ref()
1587 	for (i = 0; i < elf->num_sections; i++) {  in check_sec_ref()
1588 		check_section(mod->name, elf, &elf->sechdrs[i]);  in check_sec_ref()
1591 			section_rela(mod, elf, &elf->sechdrs[i]);  in check_sec_ref()
1593 			section_rel(mod, elf, &elf->sechdrs[i]);  in check_sec_ref()