[PATCH v3 16/21] objtool/klp: Filter arm64 mapping symbols in find_symbol_by_offset()

ARM64 ELF objects contain $d/$x mapping symbols (STT_NOTYPE) at offset 0
in data/text sections.  These aren't "real" symbols so filter them from
find_symbol_by_offset(), consistent with the existing section symbol
filter.

Signed-off-by: Josh Poimboeuf <[email protected]>
---
 tools/objtool/elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 9d5a926934dc2..a4d9afa3a079c 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -159,7 +159,7 @@ struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset)
 	struct symbol *sym;
 
 	__sym_for_each(sym, tree, offset, offset) {
-		if (sym->offset == offset && !is_sec_sym(sym))
+		if (sym->offset == offset && !is_sec_sym(sym) && !is_mapping_sym(sym))
 			return sym->alias;
 	}
 
-- 
2.53.0