From: Felix Fietkau Subject: kernel: when KALLSYMS is disabled, print module address + size for matching backtrace entries [john@phrozen.org: felix will add this to his upstream queue] lede-commit 53827cdc824556cda910b23ce5030c363b8f1461 Signed-off-by: Felix Fietkau --- lib/vsprintf.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -914,8 +914,10 @@ char *symbol_string(char *buf, char *end struct printf_spec spec, const char *fmt) { unsigned long value; -#ifdef CONFIG_KALLSYMS char sym[KSYM_SYMBOL_LEN]; +#ifndef CONFIG_KALLSYMS + struct module *mod; + int len; #endif if (fmt[1] == 'R') @@ -932,8 +934,14 @@ char *symbol_string(char *buf, char *end return string_nocheck(buf, end, sym, spec); #else - return special_hex_number(buf, end, value, sizeof(void *)); + len = snprintf(sym, sizeof(sym), "0x%lx", value); + mod = __module_address(value); + if (mod) + snprintf(sym + len, sizeof(sym) - len, " [%s@%p+0x%x]", + mod->name, mod->core_layout.base, + mod->core_layout.size); #endif + return string(buf, end, sym, spec); } static const struct printf_spec default_str_spec = {