If asm code specifies an UNWIND_HINT_EMPTY hint, don't warn if the
section ends unexpectedly.  This can happen with the xen-head.S code
because the hypercall_page is "text" but it's all zeros.

Signed-off-by: Josh Poimboeuf <[email protected]>
---
 tools/objtool/check.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index f744617c9946..d8683f0fe04d 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1737,11 +1737,14 @@ static int validate_branch(struct objtool_file *file, 
struct instruction *first,
                if (insn->dead_end)
                        return 0;
 
-               insn = next_insn;
-               if (!insn) {
+               if (!next_insn) {
+                       if (state.cfa.base == CFI_UNDEFINED)
+                               return 0;
                        WARN("%s: unexpected end of section", sec->name);
                        return 1;
                }
+
+               insn = next_insn;
        }
 
        return 0;
-- 
2.13.5

Reply via email to