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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A0FA2C07E9D for ; Tue, 27 Sep 2022 22:39:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+3uzZnpD12UbfOJF3J/jftc2v1dg6wbtVLelVoU+eY0=; b=EpOlVkOwkAqTZO LnTn8vwj8p0n/K8gBU8s3dLpPc/xyhfmv2VxYi6dQMqIdPTrZhr4bMoNHidDY1PKERdbcQf+oHtD5 rcNFmYCEsPc90vncbz0h8Gz2Fj7gIWGiMHlDZC0/fZWP4+U1Sm/5jgrrKxW4I4Hw1GKkTwWFF7kNL c/5WyIDUlcOCSV65luXAn78N+YYklGmLv6xVGBbdB0UkOHkrq/uQbMnSozVCNWa42r6+kiwCv3gQ9 S8Z8vj4bzIOS6mqqMi49SM54GieCpCAFdXQF5ygupcpgAX2vWFjJuaHlKQYYqUdfR5xfvjPP/lY/N cisK+8TEuxUrswU6o3Mw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1odJDS-00Cxfa-PR; Tue, 27 Sep 2022 22:38:14 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1odJDO-00Cx4I-Gf for linux-arm-kernel@lists.infradead.org; Tue, 27 Sep 2022 22:38:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Wu+E2LhsDDERWJZNkF58udNtKGBkLwAE+je5LgTqdPs=; b=PK/BYKGI+kq/0L1NDEc/bdr+fN eJH/k+9MCCmeLqU/c2xbDnUJeUafwg57l6xljtfLqXBp4JavmUijspCA7/xxsck04LS/nAuKxNHi0 1uExtJhEhUleW8mlBykQe9AiMLCby62bJjIiDii5+oAHpvv6RmArPNAVoTtwBbl9VNFjejmTrvzqn T82k/BeAUMlLGnMI9bnfFvAywxI6qnRpanBZHzI8CcVeRu129o/KZ4VEMHV9pdl3n8afTklcyk/GR cUCIKLVe6DDH2kvdRrx2hn1wWa7WjgA+6Q6c/kOUL4a5LQ4F9qKzWKyEG7Izz54p0C7LuQL5C2Ut7 BcpLbUYw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:34516) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1odJAq-0002Cc-Ct; Tue, 27 Sep 2022 23:35:32 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1odJAi-0006RI-KM; Tue, 27 Sep 2022 23:35:24 +0100 Date: Tue, 27 Sep 2022 23:35:24 +0100 From: "Russell King (Oracle)" To: Nick Desaulniers Cc: Masami Hiramatsu , "Naveen N . Rao" , Anil S Keshavamurthy , "David S . Miller" , Arnd Bergmann , Nathan Chancellor , Tom Rix , sparkhuang , Ard Biesheuvel , Steven Rostedt , Linus Walleij , Chen Zhongjin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, llvm@lists.linux.dev, Naresh Kamboju , regressions@lists.linux.dev, lkft-triage@lists.linaro.org, Linux Kernel Functional Testing , Logan Chien Subject: Re: [PATCH v2] ARM: kprobes: move __kretprobe_trampoline to out of line assembler Message-ID: References: <20220927222851.37550-1-ndesaulniers@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220927222851.37550-1-ndesaulniers@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220927_153810_570168_DEDE1183 X-CRM114-Status: GOOD ( 10.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 27, 2022 at 03:28:51PM -0700, Nick Desaulniers wrote: > commit 1069c1dd20a3 ("ARM: 9231/1: Recover kretprobes return address for > EABI stack unwinder") > tickled a bug in clang's integrated assembler where the .save and .pad > directives must have corresponding .fnstart directives. The integrated > assembler is unaware that the compiler will be generating the .fnstart > directive. Has it been confirmed that gcc does generate a .fnstart for naked functions? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel