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| author | Felix Fietkau <nbd@openwrt.org> | 2015-05-10 00:02:18 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2015-05-10 00:02:18 +0000 |
| commit | 53827cdc824556cda910b23ce5030c363b8f1461 (patch) | |
| tree | 3e395913a07ab9ae25a18440097d29bc969b9948 | |
| parent | 53a5647414838b204bf21ff33781374588feb737 (diff) | |
| download | mtk-20170518-53827cdc824556cda910b23ce5030c363b8f1461.zip mtk-20170518-53827cdc824556cda910b23ce5030c363b8f1461.tar.gz mtk-20170518-53827cdc824556cda910b23ce5030c363b8f1461.tar.bz2 | |
kernel: when KALLSYMS is disabled, print module address + size for matching backtrace entries
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 45655
| -rw-r--r-- | target/linux/generic/patches-3.18/205-backtrace_module_info.patch | 38 | ||||
| -rw-r--r-- | target/linux/generic/patches-4.0/205-backtrace_module_info.patch | 38 |
2 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/205-backtrace_module_info.patch b/target/linux/generic/patches-3.18/205-backtrace_module_info.patch new file mode 100644 index 0000000..594871b --- /dev/null +++ b/target/linux/generic/patches-3.18/205-backtrace_module_info.patch @@ -0,0 +1,38 @@ +--- a/lib/vsprintf.c ++++ b/lib/vsprintf.c +@@ -613,10 +613,12 @@ static noinline_for_stack + char *symbol_string(char *buf, char *end, void *ptr, + struct printf_spec spec, const char *fmt) + { ++#ifndef CONFIG_KALLSYMS ++ struct module *mod; ++#endif + unsigned long value; +-#ifdef CONFIG_KALLSYMS + char sym[KSYM_SYMBOL_LEN]; +-#endif ++ int len; + + if (fmt[1] == 'R') + ptr = __builtin_extract_return_addr(ptr); +@@ -630,13 +632,15 @@ char *symbol_string(char *buf, char *end + else + sprint_symbol_no_offset(sym, value); + +- return string(buf, end, sym, spec); + #else +- spec.field_width = 2 * sizeof(void *); +- spec.flags |= SPECIAL | SMALL | ZEROPAD; +- spec.base = 16; ++ 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->module_core, mod->core_size); + +- return number(buf, end, value, spec); ++ return string(buf, end, sym, spec); + #endif + } + diff --git a/target/linux/generic/patches-4.0/205-backtrace_module_info.patch b/target/linux/generic/patches-4.0/205-backtrace_module_info.patch new file mode 100644 index 0000000..8417d60 --- /dev/null +++ b/target/linux/generic/patches-4.0/205-backtrace_module_info.patch @@ -0,0 +1,38 @@ +--- a/lib/vsprintf.c ++++ b/lib/vsprintf.c +@@ -614,10 +614,12 @@ static noinline_for_stack + char *symbol_string(char *buf, char *end, void *ptr, + struct printf_spec spec, const char *fmt) + { ++#ifndef CONFIG_KALLSYMS ++ struct module *mod; ++#endif + unsigned long value; +-#ifdef CONFIG_KALLSYMS + char sym[KSYM_SYMBOL_LEN]; +-#endif ++ int len; + + if (fmt[1] == 'R') + ptr = __builtin_extract_return_addr(ptr); +@@ -631,13 +633,15 @@ char *symbol_string(char *buf, char *end + else + sprint_symbol_no_offset(sym, value); + +- return string(buf, end, sym, spec); + #else +- spec.field_width = 2 * sizeof(void *); +- spec.flags |= SPECIAL | SMALL | ZEROPAD; +- spec.base = 16; ++ 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->module_core, mod->core_size); + +- return number(buf, end, value, spec); ++ return string(buf, end, sym, spec); + #endif + } + |