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- From: Felix Fietkau <nbd@nbd.name>
- 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 <nbd@nbd.name>
- ---
- lib/vsprintf.c | 15 +++++++++++----
- 1 file changed, 11 insertions(+), 4 deletions(-)
- --- a/lib/vsprintf.c
- +++ b/lib/vsprintf.c
- @@ -669,8 +669,10 @@ 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')
- @@ -684,11 +686,16 @@ char *symbol_string(char *buf, char *end
- sprint_symbol(sym, value);
- else
- sprint_symbol_no_offset(sym, value);
- -
- - return string(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 noinline_for_stack
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