[PATCH v2 21/62] objtool: Check for missing annotation entries in read_annotate()

[Josh Poimboeuf]

Add a sanity check to make sure none of the relocations for the
.discard.annotate_insn section have gone missing.

Signed-off-by: Josh Poimboeuf <jpoim...@kernel.org>
---
 tools/objtool/check.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 53793b9ea974..0cdc2fc85439 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2314,6 +2314,11 @@ static int read_annotate(struct objtool_file *file,
                sec->sh.sh_entsize = 8;
        }
 
+       if (sec_num_entries(sec) != sec_num_entries(sec->rsec)) {
+               ERROR("bad .discard.annotate_insn section: missing relocs");
+               return -1;
+       }
+
        for_each_reloc(sec->rsec, reloc) {
                type = *(u32 *)(sec->data->d_buf + (reloc_idx(reloc) * 
sec->sh.sh_entsize) + 4);
 
-- 
2.49.0