diff options
| author | Song Liu <song@kernel.org> | 2026-03-05 15:15:26 -0800 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@kernel.org> | 2026-03-06 08:08:30 -0800 |
| commit | a3f28d2072452edb377eaad01375445dbace6771 (patch) | |
| tree | 1e61c91ef40548c9875b7dce2dd3cf3df60ba7e1 /tools | |
| parent | a1cbaff2ea23645f0a94fdfa721aef202aebdf86 (diff) | |
objtool/klp: Remove trailing '_' in demangle_name()
With CONFIG_LTO_CLANG_THIN, it is possible to have nested __UNIQUE_ID_,
such as:
__UNIQUE_ID_addressable___UNIQUE_ID_pci_invalid_bar_694_695
To remove both trailing numbers, also remove trailing '_'.
Also add comments to demangle_name().
Signed-off-by: Song Liu <song@kernel.org>
Link: https://patch.msgid.link/20260305231531.3847295-3-song@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/objtool/elf.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index a634b227d627..fe6e66dd5422 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -441,6 +441,19 @@ static int read_sections(struct elf *elf) return 0; } +/* + * Remove number suffix of a symbol. + * + * Specifically, remove trailing numbers for "__UNIQUE_ID_" symbols and + * symbols with '.'. + * + * With CONFIG_LTO_CLANG_THIN, it is possible to have nested __UNIQUE_ID_, + * such as + * + * __UNIQUE_ID_addressable___UNIQUE_ID_pci_invalid_bar_694_695 + * + * to remove both trailing numbers, also remove trailing '_'. + */ static const char *demangle_name(struct symbol *sym) { char *str; @@ -463,7 +476,7 @@ static const char *demangle_name(struct symbol *sym) for (int i = strlen(str) - 1; i >= 0; i--) { char c = str[i]; - if (!isdigit(c) && c != '.') { + if (!isdigit(c) && c != '.' && c != '_') { str[i + 1] = '\0'; break; } |