[PATCH 3/4] objtool: Warn on stripped section symbol

[Josh Poimboeuf]

With the following fix:

  2a0098d70640 ("objtool: Fix seg fault with gold linker")

... a seg fault was avoided, but the original seg fault condition in
objtool wasn't fixed.  Replace the seg fault with an error message.

Suggested-by: Ingo Molnar <mi...@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoim...@redhat.com>
---
 tools/objtool/orc_gen.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index e61fe703197b..18384d9be4e1 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -98,6 +98,11 @@ static int create_orc_entry(struct section *u_sec, struct 
section *ip_relasec,
        struct orc_entry *orc;
        struct rela *rela;
 
+       if (!insn_sec->sym) {
+               WARN("missing symbol for section %s", insn_sec->name);
+               return -1;
+       }
+
        /* populate ORC data */
        orc = (struct orc_entry *)u_sec->data->d_buf + idx;
        memcpy(orc, o, sizeof(*orc));
-- 
2.14.3