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Subject[PATCH v2 36/53] objtool/klp: Handle Clang .data..Lanon anonymous data sections
Date
Clang generates anonymous data sections named .data..Lanon.<hash>.
These need section-symbol references in the same way as .data..Lubsan
(GCC) and .data..L__unnamed_ (Clang UBSAN) sections. Without this,
convert_reloc_sym() fails when processing relocations that reference
these sections.

Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
tools/objtool/klp-diff.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c
index 463b6daa5234..7e58ef36f805 100644
--- a/tools/objtool/klp-diff.c
+++ b/tools/objtool/klp-diff.c
@@ -1030,14 +1030,15 @@ static int convert_reloc_secsym_to_sym(struct elf *elf, struct reloc *reloc)
}

/*
- * Sections with anonymous or uncorrelated data (strings, UBSAN data)
- * need section symbol references.
+ * Sections with anonymous or uncorrelated data (strings, UBSAN data, Clang
+ * anonymous constants) need section symbol references.
*/
static bool is_uncorrelated_section(struct section *sec)
{
return is_string_sec(sec) ||
strstarts(sec->name, ".data..Lubsan") || /* GCC */
- strstarts(sec->name, ".data..L__unnamed_"); /* Clang */
+ strstarts(sec->name, ".data..L__unnamed_") || /* Clang */
+ strstarts(sec->name, ".data..Lanon."); /* Clang */
}

/*
--
2.53.0

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