From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB674C433EF for ; Sat, 23 Jul 2022 10:07:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238103AbiGWKHA (ORCPT ); Sat, 23 Jul 2022 06:07:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58046 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238430AbiGWKGg (ORCPT ); Sat, 23 Jul 2022 06:06:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A496BE9CC; Sat, 23 Jul 2022 03:01:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8DCB9611BF; Sat, 23 Jul 2022 10:00:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 982B2C341C0; Sat, 23 Jul 2022 10:00:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1658570459; bh=oAN6Q4dQiIIJu3yvwAyYImnSQUKBxZrz7e4pEBocnjg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1vv5QUkoDaMtURlGC8rSwUr9mlNQd2F4RcpkDJVee6gohyzjZtF4iHg9cmeTASUfH e7N7bUjxQPxp/8wuYXYUf3gRUiEHMnucK4kb9PrZLSTz/msJKaOKazfcDp9rm9DQis F1cRLg9vSMIXPWXxLUMSE13ilCSGH4ps53YOhiHc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Peter Zijlstra (Intel)" , Borislav Petkov , Josh Poimboeuf , Thadeu Lima de Souza Cascardo , Ben Hutchings Subject: [PATCH 5.10 094/148] objtool: Treat .text.__x86.* as noinstr Date: Sat, 23 Jul 2022 11:55:06 +0200 Message-Id: <20220723095250.747563428@linuxfoundation.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220723095224.302504400@linuxfoundation.org> References: <20220723095224.302504400@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peter Zijlstra commit 951ddecf435659553ed15a9214e153a3af43a9a1 upstream. Needed because zen_untrain_ret() will be called from noinstr code. Also makes sense since the thunks MUST NOT contain instrumentation nor be poked with dynamic instrumentation. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Borislav Petkov Reviewed-by: Josh Poimboeuf Signed-off-by: Borislav Petkov Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- tools/objtool/check.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -366,7 +366,8 @@ static int decode_instructions(struct ob sec->text = true; if (!strcmp(sec->name, ".noinstr.text") || - !strcmp(sec->name, ".entry.text")) + !strcmp(sec->name, ".entry.text") || + !strncmp(sec->name, ".text.__x86.", 12)) sec->noinstr = true; for (offset = 0; offset < sec->len; offset += insn->len) {