diff options
| 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 | df1ab296bc8bc6273597924beca1fe185b80b1e0 (patch) | |
| tree | 48cfcaad9f1c4e547bd418efadd3b32c354b0505 /target/linux/generic/patches-4.0 | |
| parent | 3ce7d548a85967d4b6feeca7e2457c5044afec45 (diff) | |
| download | upstream-df1ab296bc8bc6273597924beca1fe185b80b1e0.tar.gz upstream-df1ab296bc8bc6273597924beca1fe185b80b1e0.tar.bz2 upstream-df1ab296bc8bc6273597924beca1fe185b80b1e0.zip | |
kernel: when KALLSYMS is disabled, print module address + size for matching backtrace entries
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45655 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-4.0')
| -rw-r--r-- | target/linux/generic/patches-4.0/205-backtrace_module_info.patch | 38 |
1 files changed, 38 insertions, 0 deletions
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 0000000000..8417d609d3 --- /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 + } + |