Messages in this thread Patch in this message | | | From | Josh Poimboeuf <> | Subject | [PATCH v2 1/8] objtool: Don't report end of section error after an empty unwind hint | Date | Mon, 18 Sep 2017 21:43:30 -0500 |
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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 <jpoimboe@redhat.com> --- 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
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