Patch "objtool: Don't report end of section error after an empty unwind hint" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

objtool: Don't report end of section error after an empty unwind hint

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
objtool-don-t-report-end-of-section-error-after-an-empty-unwind-hint.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Josh Poimboeuf <[email protected]>
Date: Mon, 18 Sep 2017 21:43:30 -0500
Subject: objtool: Don't report end of section error after an empty unwind hint

From: Josh Poimboeuf <[email protected]>

commit 00d96180dc38ef872ac471c2d3e14b067cbd895d upstream.

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.

---
 tools/objtool/check.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

@@ -1757,11 +1757,14 @@ static int validate_branch(struct objtoo
 		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;

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/objtool-don-t-report-end-of-section-error-after-an-empty-unwind-hint.patch queue-4.14/x86-cpufeatures-re-tabulate-the-x86_feature-definitions.patch