From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57324 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754664AbdLTPOA (ORCPT ); Wed, 20 Dec 2017 10:14:00 -0500 Subject: Patch "objtool: Don't report end of section error after an empty unwind hint" has been added to the 4.14-stable tree To: jpoimboe@redhat.com, boris.ostrovsky@oracle.com, gregkh@linuxfoundation.org, jgross@suse.com, jslaby@suse.cz, luto@kernel.org, mingo@kernel.org, peterz@infradead.org, tglx@linutronix.de, torvalds@linux-foundation.org Cc: , From: Date: Wed, 20 Dec 2017 16:14:02 +0100 Message-ID: <151378284220685@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 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 know about it. >>From 00d96180dc38ef872ac471c2d3e14b067cbd895d Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf 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 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. Signed-off-by: Josh Poimboeuf Cc: Andy Lutomirski Cc: Boris Ostrovsky Cc: Jiri Slaby Cc: Juergen Gross Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/ddafe199dd8797e40e3c2777373347eba1d65572.1505764066.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- tools/objtool/check.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -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 jpoimboe@redhat.com 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